454 Timing Chain Slack

Keep in mind the engine was cold and the revs were up some but you'll see the timing pointer is to the right of the line on the dampner. changed the cam sensor and if was the crank sensor the truck probably wouldn't start. You need to remove the timing chain cover and check the movement is below the 0. 8 Duratorq TDCI Diesel engine can have both a timing chain combined with a timing belt or a wetbelt combined with a timing belt. I would suspect a sloppy timing chain. We have the same engine so I shot a little video for ya. Is 1/2" OK?. Big Block BBC Chevy Polish Aluminum Timing Chain Cover Generation 5 Mark V 454 | eBay. Cloyes, based in Fort Smith, Ark. 7L 2017, Timing Chain Kit without Variable Valve Timing Sprocket by Cloyes®. 4L) - HAVING A PROBLEM WITH TIMING CHAIN SLACK? - I BEEN HAVING PROBLEM WITH TIMING CHAIN SLACK. There are too many parts between the crank and the rotor and there for the slack is going to be exponentially more than what is going on between the crank and cam. The tensioner needs oil pressure to push its plunger into the timing chain guide to remove the slack in the timing chain. Consequently, care must be used to make sure the tensioner is adjusted to specifications when the timing chain is replaced. Timing Chain Tensioner Related Repair Advice. A brand new perfect fit chain will have 1/8 inch wiggle or slack. Buy online - ROLLMASTER Timing Chain Chevy Big Block 396/454 PRE/EFI Gold Series with torrington bearing & nitrided sprockets, 9 keyway crank sprocket CS2040. When a timing chain elongates it may not do so in a uniform way and parts of the chain may be tighter or looser than others. Since then the service light has come on for a few days at a time then goes off. Cab Automatic with a 4. 4L 454 427 396. I mean the tensioner will do its job and will accomodate for any slack. Belt Camshaft Crankshaft Mount Oil Pump Vacuum Pump Block. I have had it in the shop and every thing is in specs. Choose from double roller, adjustable timing and economy timing chain sets from JEGS, Cloyes, Comp Cams, Crane Cams, Edelbrock, GM Performance, Milodon, Speed Pro and more! Timing Chains are available ready to ship for most engine applications. 4 will not need service unless it presents a problem (as mentioned above, trouble codes or poor running that can be narrowed down to the chain) or the engine is disassembled for another reason and the chain is found to have too much slack. If you have some strange performance problems like hesitation, misfires, or perhaps even a check engine light for a cam or crank sensor, you might want to check for timing chain slack. *Make sure tensioner spring is still applying force to chain. How much "Slack" should a timing chain have? When I pulled my 400 and put in the 455 my 400 ran perfect, but the other day I looked through the Fuel pump Boss and I turned the crank and I saw it had probably a half inch of slack in the chain. We wouldn't even dream of using the low cost timing chain and gears on a high performance engine. *Turn the crankshaft clockwise 2 full revolutions by hand, and recheck all timing marks to be sure they still line up. View Details. Ford Fusion 2. Compatibility. Lock timing chain tensioner in retracted position [4] : Push tensioner rail against chain tensioner [5]. I can't see how the balancer chain could interfere with the timing chain. You may find your 3/4" of slack is a combination of stretched chain but more likely worn cam and crank shaft sprockets. Checking 22R Timing Chain, Timing Sprocket and Overall Engine Condition With Engine Out of the Toyota Truck. Now have a buddy standing buy to watch the distributor rotor. *Make sure tensioner spring is still applying force to chain. These chain links are tighter and more durable for use in high performance applications. 8-cylinder engines Position a scale next to the timing chain to detect any movement in the chain. Our trucks have hydraulic timing chain tensioners, so if one of the timing chain tensioners is, for whatever reason, not building up pressure like it should be, that COULD explain why the noise goes away when it warms up. A timing tab with an adjustable pointer is a great way to keep your engine timed correctly. I bought a now sprocket set but it does not match the chain pitch of the crank sprocket and I do not have a puller to replace it. The link and mark are on the left in the photo but end up on the right when I put the chain back on the sprocket. 0L engine timing chain replacement is provided courtesy of Mike Forbes. *Reinstall timing cover, drive belts, motor mount, etc. The timing set in my 68 has 8 degrees slack measured on the crank pulley. The first thing anybody asks you when you say you have a 380SL for sale is: "Does it have the double-row timing chain?" The timing chain issue is a well-known problem with the early eighties' US-version 380 V8 engines. SA GEAR 73036-3 DOUBLE ROLLER TIMING CHAIN SET BBC BB CHEVY 396 427 454. Timing Chain Diagnosis for V8 How To Episode How to Diagnose & Replace Any Chevy 350 / 5. 005-inch shorter distance, which would create slack in the chain. Timing Chain Kit Febi For Audi A8 Q7 4e 4l 05-10 079109229j $542. Keep in mind, the engine, when running, only turns in one direction, not both. Previous research has mainly focused on the strategic aspects of the entry-time decision. If the chain fails, the vehicle will not run at all. This timing chain cover may require extra gasket thickness or shim under short pumps to clear the cover. Harmonic balancer on 454 has 4 timing marks Recently I was forced to replaced a blown 454 in my boat. Ford issued a TSB for the timing rattle problem and released a redesigned “‘cassette”‘ (the timing chain, gears, guide and tensioner assembly) for the left front timing chain. The bad news is that labor at a shop isn't. when i put my timing chain on, i noticed there is a pretty good amount of slack in it. Find CHEVROLET 7. I have had it in the shop and every thing is in specs. NOTE: Ensure timing chain is taut between sprockets on non-tensioned side. I usually change my chain after 100,000 miles on my chevy 6 cyl trucks. TCD on the correct stroke. A loose timing chain can throw the engine's timing off, which can lead to poor performance. Dodge Ram 2018, Timing Chain Tensioner by Cloyes®. I guess most 460 guys know that the timing was retarded around '72. Also re-read your earlier post. THS = Total Hold Slack = sum of the negative hold slack paths. I've recently read about the guy. Shop in Timing-Chain-Cover- from Autonets. It must be brought there in the direction of normal engine rotation (clockwise on the overwhelming majority of cars, but observe it to be certain). Hedman Hedders & Trans-Dapt Performance Products are two of the hot rod industries original manufacturers, dating way back to 1954. The timing chain isn't that big a job, it takes about a day. This isn't absolutely necessary but I find it makes it much easier to get the initial timing very close to 8 to 10 deg BTDC when installing the new distributor. don't seem to worn. If the wear limit has been exceeded, the timing chain must be renewed. Then loosen the pinch bolt on the adjuster. Two days before we took it in with the light on, we noticed again, that its performance had degraded considerably. It's a double roller melling chain and sprokets. A timing chain/ belt in an engine should necessarily connect the crankshaft and the camshaft. When Replacing A Timing Chain On A Small Block 350 Chevy Original Motor? At first, the car backfired badly through the carb (flames) which made me feel that it jumped timing. It really quieted it down. bb chevy black timing tab. I am putting a cam in a 4. This moves all the Cam Chain slack to where the adjuster is. JE Pistons shares their years of four-stroke piston and engine experience to go through the critical steps of correctly setting cam timing. MCC317322 Chrome Big Block Chevy Timing Chain Cover And Timing Tab 396 427 454 502 (gen 4). I left the black-tan wire plugged in and noticed that my timing was way advanced (probably around sixteen degrees) and fluctuating slightly as the rpm's went up and down while idling (this is one of the annoying things I have been trying to fix). Pace Performance offers the best pricing on products offered by GM (General Motors). A Volkswagen timing chain warranty extension is included in a settlement agreement between Audi and VW owners who filed class-action lawsuits over the timing chains and tensioners. the left side stays tight but the right side becomes slack when i. Degreeing the Camshaft What is Meant by Degreeing the Camshaft, and Why is it Necessary? The term "Degreeing In Your Camshaft" means you are making sure the camshaft's position in the engine coincides with that of the crankshaft, so that their rotation is synchronized. After that, it has done it a couple more times. If you need to access cam timing without taking the front of your engine apart, try a 2 or 3 piece timing chain cover. Is it OK to replace JUST the timing chain on a 454 BBC? Source(s): as soon as the rollers start to break in,that chain will have atleast half the slack it has now. The problem of broken guides on the timing-chain. Some have suggested that a manufacturing defect created timing chains with sharper edges that rapidly saw through their guides. The timing chain is a major component in your engine. Rollmaster timing chain issue bbc gen6 fix "quickchange" Removing Slack In A-Series Engine Timing Chains 750HP 454 CHEVY ENGINE START UP ON GROUND*HOT RAT ROD ENGINE*CRAZY INSANE CAM. A stretched/worn timing chain will eventually result in the engine’s timing becoming inaccurate. The average cost for a Porsche Cayman timing chain tensioner replacement is between $406 and $454. It must be brought there in the direction of normal engine rotation (clockwise on the overwhelming majority of cars, but observe it to be certain). when i put my timing chain on, i noticed there is a pretty good amount of slack in it. 890 inch and our number of 4. 0L Timing Chain Replacement By Mike Forbes. 0 sohc timing chain rattle, so here is literally everything you need to know about it. I'm not sure if those numbers are normal. Lack of tension prevents slack in the timing chain from being taken up. If it's well worn you will hear a muffled bang or pop as the adjuster takes up the slack in the Cam Chain. In the process of putting my hyd roller in an was wondering how much slack should there be in the timing chain? I can move it quite a bit on either side. V for Single Row Timing Chain Only [QSTTC454G5] - Cast Aluminum Timing Cover for GM 454 Big Block V8 Gen. Except European countries. But eventually pistons start misfiring, valve timing is thrown off, a trumpet player goes off key. 9 miles from the dealership. Features Include: - Induction hardened cast iron camshaft gear and billet steel crank sprocket. Labor costs are estimated between $177 and $225 while parts are priced at $229. Once the tensioners start to slack, you could end up with a. It does not matter if the engine has a timing chain or a wetbelt. This causes the valves to open and close later than normal, resulting in reduced cylinder pressures and uneven firing of the fuel mixture. Fit Big Block Chevy 1991-1995 454-502 " Generation 5 " ( Gasket Style ). Find many great new & used options and get the best deals for Big Block Chevy Polished Aluminum Timing Chain Cover Kit BBC 396 454 427 402 BBC at the best online prices at eBay!. The timing of Slack's S-1 was first reported by the Wall Street Journal. You dont have much to worry about in the chain. how to adjust timing on a 1985 kawasaki 454 ltd. I did have allot of top end noise so i loosened the tensioner and let it take up some slack in the cam chain, of which there was a bit. SOHC Timing Chain Rattle -> Catastrophic Failure? I believe my '03 Edge with all of 49,500 miles has the SOHC Timing Chain Rattle Heard during freeway acceleration 2600-3000+ rpm run to 60 when the engine is still on the cool end of the scale. 4 liters on a 1997 Chevy G3500. If your cam phasers are making noise more than likely the lifters will be to. 7L Timing Chain Pt2 Timing Chain Inspection and How To Check Timing Chain Slack -EricTheCarGuy. The Timing Chain Conversion Kit (Part# 1015012) adds a dual row timing chain to replace the single timing chain that is standard in the late 85-95 22R & 22RE engines. But eventually pistons start misfiring, valve timing is thrown off, a trumpet player goes off key. 4L 454 V8 Gen. The intake camshaft has an adjustable timing gear that operates electro-hydraulically. Does anyone know if your actually supposed to do this? On my last valve adjustment i looked at the chain and it seemed loose. Mike was doing some work on his 2005 TJ and asked if I wanted to put the info on the site. 0T CHAIN DRIVEN Timing Chain Tensioner Failure (C***). We have 2 Kawasaki Ninja ZX-6R 2005 manuals available for free PDF download: Drive Chain Slack Inspection 368. One great thing is that a Timing Set. Timing Chain Cover; Speedmaster Polished Aluminum 2-Piece Timing Chain Cover Big Block Chevy 454 Gen 1-4 Speedmaster PCE265. one chain for the left cam that connects to the idler and one chain for the right cam that connects to the idles. Melling timing chain kits provide an efficient and economical way to provide the timing components needed for a quality engine rebuild. This time, idk. I usually change my chain after 100,000 miles on my chevy 6 cyl trucks. 4 L engine timing chain noise. If the gasket on the chain tensioner has failed and the chain tensioner is also going bad, would that account for both oil all over the right side of the engine and a little bit of slack up at the top of the timing chain? Details… My 2003 Corolla CE just turned 170k miles. There is no specific time to replace it, as there is with timing belts. The diagnosis from the mechanic was that the timing chain, due to wear and tear, has acted like a chainsaw and cut a hole in the timing chain cover and allowed oil to leak out. When I've done timing chains or cams on an SBC, there is a little slop in the chain, but not a whole bunch. Nissan Navara D22 D40 Duplex timing chain kit upgrade. It happens when the oil feed to the chain tensioner becomes clogged and the tensioner ceases to work allowing the timing chain to become slack, although the chain is likely to snap when it happens, they do jump time. when i put my timing chain on, i noticed there is a pretty good amount of slack in it. enginetech chevy bbc 454 7. During a cold start, the hydraulic chain tensioner does not apply as much tension as when the car engine is running. We have the same engine so I shot a little video for ya. Thanks to everyone who came to visit us to view SA Gear 78110. I realized I had not removed the key in the crankshaft. Now is also a good opportunity to check your engine's timing chain for slack. Tighten to 12 Nm. Should I replace it with a better double roller chain to be safe?. Proven LS Horsepower. It really quieted it down. 0L Timing Chain Replacement By Mike Forbes. to check timing chain slac,remove the distributor cap,put a socket on the bolt in the crankshaft and turn it until the rotor button moves. The 2002 Saturn L200 has 2 problems reported for told timing-chain issue. If valve timing and ignition timing are not accurate, noises from the engine compartment may be noticeable. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Timing chain is a ROMAC billet gear double roller type. Timing chain slack - Ford Modifications Website. I usually change my chain after 100,000 miles on my chevy 6 cyl trucks. Just one in the stack of links 5 or 6 deep. 8 and the timing chain has some slop in it. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. I know this is bad, but is it worth the expence on a tired engine? i mean when i do it, will the engine run any better? or won't i notice anything. Join to discuss rebuilds, modifications, tech articles and more!. You can book online and our mobile mechanics will come and do the work on your doorstep, one way to make your life a little easier!. This timing chain cover may require extra gasket thickness or shim under short pumps to clear the cover. When this occurs, slack in the chain tends to jerk and the plastic timing chain guides can break. Showing 1-5 of 5 results BB Chevy 396-454 Timing cover gaskets (without seal) USD$ 6. This is a discussion for the topic timing chain slack how much? on the board Engine Mechanical / Electrical. When this nylon cover flakes off the gear, the chain will slip and the engine will “jump time”. Bracket engine running 10. Corolla and Matrix Timing Chain Tensioner Oil Leak – 1ZZ-FE/2ZZ-GE If you own a Toyota Corolla or Matrix with the 1ZZ-FE or 2ZZ-GE you may be familiar with an oil leak from the timing chain tensioner out the back of the engine. Symptoms of a stretched/damaged timing chain:. Install the timing chain. Because the timing chains are so long, they are supported by plastic guides. Choose Options. SA Gear 78110. Since then the service light has come on for a few days at a time then goes off. Timing Chain Cover Gaskets. Has maybe 5000 miles on it. my only concern is when i turned the motor over with the 17mm the cams would kind of jump into place and i really felt like the chain was loose even tho. For some reason any 454 I've. These double roller chain sets are manufactured to meet or exceed OEM specifications. i really dont know what to look for anymore and its driving me insane. Note the engine in bay- but plenty of room. I would check you're oil right away and see if there's any water in it,if there is it's probably a head gasket. Complete RWD/FWD OEM SR20 Timing chain kit, this kit includes everything necessary to change the timing chain and upgrade to S15 components for your B13, B14, B15, P11, S13, S14 and S15 SR20 and VVL motor. A Volkswagen timing chain warranty extension is included in a settlement agreement between Audi and VW owners who filed class-action lawsuits over the timing chains and tensioners. Lift the camshaft gear into place on the camshaft. In years past, manufacturers have used plastic covered cam gears in an attempt to make the chain and gears run quieter. Timing chains will rarely ever break however what often happens is the guides and the tensioners will wear out and the chain will slip. The timing chain is an alternative to the timing (or cam) belt. TIMING CHAINS Mazda Timing Chain. Buy SA Gear 73036-3 BBC Chevy HD Double Row Timing Chain 396 402 427 454 3 Keyway: Sets & Kits - Amazon. I chose to back the bolt out and replace the o-ring using some leak sealant to hopefully prevent this further. Or say the opposite zero degrees. Engine is 454 7. The life expectancy of a timing chain on a 1999 454 Vortec engine is 5 to 10 years. This will normally be either 3 or 4 turns longer from the point where all of the slack is taken up, depending on the thread pitch of the pushrod adjusters (3 turns for Sledge Hammer adjustable pushrods). The 350 Chevy does not have a belt, it has a chain. When people refer to a timing chain being stretched, this is not the case. The roller timing chain setup remained in 5-liter V8 production through 1994. the odometer reads 248-ishbut i don't really see any evidence of a complete engine rebuildbut it may be a newer than stock t-chain. Fits Big Block Chevrolet Engines 396,402,427,454,502,572. When does the timing chain need to be replaced? We all know that a timing belt in a car engine needs to be replaced at recommended service intervals, but what about the timing chain? What is the difference between a timing belt and a chain?. A good double row timing chain will have a "bearing" surface on the back of it to rest against the block. 454 LS7 618rwhp/569rwtq. The rear one has been slighting seeping oil since I got her a couple months ago. If the timing chain jumped prior to replacing the distributor, the #1 cylinder and distibutor could be timed correctly, but the cam is not. Includes Cover, Seal, Gaskets & Bolts. i bought a nissan micra a few weeks ago for £800, its a nice little car and has only done 57000 miles, its an N reg. You should be OK. Save 454 timing chain cover to get e-mail alerts and updates on your eBay Feed. The intake camshaft has an adjustable timing gear that operates electro-hydraulically. I believe regular timing set can be used in either application (V8 or V6). Timing chains can jump timing. Except European countries. Then we empirically test the relationship between the market-entry time and the likelihood of success for new industrial products. Corolla and Matrix Timing Chain Tensioner Oil Leak – 1ZZ-FE/2ZZ-GE If you own a Toyota Corolla or Matrix with the 1ZZ-FE or 2ZZ-GE you may be familiar with an oil leak from the timing chain tensioner out the back of the engine. I bought a now sprocket set but it does not match the chain pitch of the crank sprocket and I do not have a puller to replace it. If the timing gears are going bad or failing and the timing chains are unable to be turned by the camshaft and crankshaft, valve timing and ignition timing will be off. Mercedes-Benz is currently trying to recapture the number one position in global luxury sales, but a quality problem on its home turf in Germany seems to be undermining confidence in the brand. This timing set is a Crane Cams Pro Series single roller. com: Car complaints, car problems and defect information. There are too many parts between the crank and the rotor and there for the slack is going to be exponentially more than what is going on between the crank and cam. A timing chain that is not addressed in a timely fashion can create additional problems that will incur extra costs if a breakdown occurs. one chain for the left cam that connects to the idler and one chain for the right cam that connects to the idles. Converts your standard timing chain kit into a Duplex double row timing setup. The timing marks consist of a notch on the rim of the crankshaft pulley or vibration damper and a graduated scale attached to the engine front (timing) cover. Here's were I am. I want to replace my timing chain tensioner as PM - I think I'm still on the original, with 130k pretty tough miles on it I've had a bit of the. I have recently rebuilt the top end of my 4. It's a double roller melling chain and sprokets. As the Cam Chain wears (Stretches) it makes more noise. Buy CFR HZ-4935-PBK-SET 1966-90 Chevy Big Block 396-402-427-454 Steel Timing Chain Cover Set with Timing Tab - Black at Walmart. 0 TSI timing chain tensioner recall, then the eEuro team is here for you!. (Some machining require to clear the double Roller Timing Chain. Chevy 454 Timing Instructions Look at the timing plate on the driver's side of the timing chain cover. Buy Chevy Big Block 396-402-427-454 Aluminum Timing Chain Cover Set - Polished: Sets & Kits - Amazon. You said idler gear - I did not remove any gears/chain. The result is sluggish performance and frequent backfire through the intake manifold caused by the uncontrolled changes in timing. 4 in, if outside it, you will need to fit new chain and spring tension. Then place it on the camshaft. May require extra thickness gasket or pump shims with short pumps. We use a custom configured Generation 4 aftermarket front cover for better oil pan sealing and authentic GM generation 5 and 6 covers. I have a 72 gmc trunk with a 350 small block. All guides were still intact, but very worn at 196k. Please check out 1979-1993 Foxbody Mustang Cylinder Heads & Valvetrain Components for an updated selection. Question about diagnosing a worn cam. I've done a simple test- turned the motor till it's on TDC then turned it the other way and observed the rotor arm. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. Can the cam chain skip a tooth if there is too much slack? This is unlikely on an F650. Al talks about installing a timing chain and gear set into this small block Chevy. Because the timing chains are so long, they are supported by plastic guides. I've since not been able to get it to start up. Buy online - ROLLMASTER Timing Chain Chevy Big Block 396/454 PRE/EFI Gold Series with torrington bearing & nitrided sprockets, 9 keyway crank sprocket CS2040. It has a 2. maintain consistent control while the elimination of a chain or belt removes all possibilities of excessive play. From timing belt kits to hoses, Dayco has you covered. JE Pistons shares their years of four-stroke piston and engine experience to go through the critical steps of correctly setting cam timing. Allowing a timing chain to jerk on startup, increases wear and may break the chain guides. 4 in, if outside it, you will need to fit new chain and spring tension. I have a 72 gmc trunk with a 350 small block. Since then the service light has come on for a few days at a time then goes off. The diagnosis from the mechanic was that the timing chain, due to wear and tear, has acted like a chainsaw and cut a hole in the timing chain cover and allowed oil to leak out. In this paper we review the literature and develop a set of propositions about the timing of new product entry. Timing Chain = run it until the engine blows up and use the same one in a rebuild because its finally gotten broken in. If you have experience as a home mechanic, you can check the timing chain in a series of steps. We have the same engine so I shot a little video for ya. Dodge Ram 2018, Timing Chain Tensioner by Cloyes®. Timing chain slack - Ford Modifications Website. The chain is the most critical component in the whole kit because it is responsible for making sure that camshaft and the crankshaft moves in perfect tandem-that, in turn, keeps your engine running efficiently. 27, buy best front gear timing chain cover gasket for bb chevy 396 402 427 454 472 502 sale online store at wholesale price. Put the sprocket on the right cam, no need to bolt it yet. Since then the service light has come on for a few days at a time then goes off. For Gen 3/4/5 V8 List. My wife has a BMW 1-Series 61 plate, diesel, 80K mileage. We are one of the Biggest dealers in the country with most items in stock. My question is why the bent pushrod valve free timing marks all good chain good no slack any ideas? Also what part number camshaft can i use and where is a good place to get the parts? Thanks. Engine is 454 7. After I replaced chains,guide, tensioners the chain noise came back within 100 miles. Subject: Timing Chain Slack on 350??? Reply: Hey bud--no slack in a chain is what you want. Find CHEVROLET Chevy big block Gen VI Timing Chain and Gear Sets and get Free Shipping on Orders Over $99 at Summit Racing!. Insert timing chain tensioner locking pin [6]. PERIODIC MAINTENANCE 2-35 Periodic Maintenance Procedures Drive Chain Slack Adjustment • Loosen the left and right chain adjuster locknuts [A]. This time, idk. Or, you find a spare (hopefully beat up) timing cover and alter it thusly. but imagine trying to take off the timing cover on the Lambda 3. From F-body to Corvette, Sierra to Silverado, G8 to GTO, we carry everything for making power with your LS or Gen V Ride!. It takes about 10 minutes every 400-500 miles (that is, every time you lubricate the chain), and is an excellent investment in keeping your drivechain healthy. 03-30-2004, 04:09 PM. Labor costs are estimated between $177 and $225 while parts are priced at $229. Timing belt or timing chain,what is a timing belt or timing chain, what is valve timing, timing belt and timing chain repair,change timing belt,timing chain replacement,water pump timing belt,diagnosis,Symptoms of a bad timing chain or timing belt,don't bend valves!. I don't have any slack in the chain and am not sure if the book is wrong or if I have missed something somewhere, but I just can't get it to go any other way. timing for the 454 engine is 10 degree's at TDC at 700 rpm in neutral or park. Dayco® No Slack™ Idler/Tensioner Pulleys Designed to replace serpentine and V-belt drive idler and tensioner pulleys. When the timing chain has slack it can throw the pistons and valves into more of an interpretive jazz dance. And petrol engines do not necessarily have one timing chain. CarComplaints. While anything can happen I think that 70,000 miles is way too early for a 454 to lose a timing chain. Find CHEVROLET 7. they are specifically written for the do-it-yourself-er as well as the experienced mechanic. The Timing Chain Conversion Kit (Part# 1015012) adds a dual row timing chain to replace the single timing chain that is standard in the late 85-95 22R & 22RE engines. Turn the engine to take up slack and then check the slack side of the chain. 4L Triton 3 valve. Timing chain guide bolts 21 Ft-lbs Timing chain tensioner arm pivot bolt 150 in-lbs Timing chain tensioners ( primary and secondary ) 21 ft-lbs. This is a stock 77 motor home engine so I'm thinking maybe the camshaft is different. Engine guy said they stretch like that after a few miles/ dyno pulls and then they're fine. But looks. The motor is early 80's vintage, true mileage unknown and also unknown if timing chain has been replaced in earlier years. We wouldn't even dream of using the low cost timing chain and gears on a high performance engine. i just rebuilt the engine an i replaced everything from the crank, crank sprocket, heads, cam gears, timing chains, and now tensioners. I reciently bought a truck that has a 454 chev. The excess slack can cause a rattling sound or even a clanking sound if the slack is severe enough to cause the chain to slap against the timing chain cover. A good double row timing chain will have a "bearing" surface on the back of it to rest against the block. 57: clevite durabond chevy bbc 396 402 427 454 rod main cam bearing set 1965. Not likely as the engine is hard to turn. TNS = Total Negative Slack = sum of the negative slack paths. Under normal conditions, chain slack shouldn't exceed 4% of the span. Yes, was planning to throw the chain and the sprockets away, but wanted to learn how to measure a timing chain on the old chain, and, like you suggested, try to see the difference. Timing chain guide bolts 21 Ft-lbs Timing chain tensioner arm pivot bolt 150 in-lbs Timing chain tensioners ( primary and secondary ) 21 ft-lbs. 4L-454ci-V8 Engine Torque Specs. Usually, neither of these symptoms occur on a car with those miles. I left the black-tan wire plugged in and noticed that my timing was way advanced (probably around sixteen degrees) and fluctuating slightly as the rpm's went up and down while idling (this is one of the annoying things I have been trying to fix). 0L Timing Chain Replacement. So the timing set in my '68 is not as good as I hoped To make sure I used a endoscoop (snake-cam) to check the chain and sprocket. There are three basic types of timing light available. Random - Timing chain slack. com FREE DELIVERY possible on eligible purchases. On way to measure slack in the timing set is to move the engine timing marks to 10*BTDC by putting a ratchet on the crankshaft pulley bolt and turning the engine till the timing mark is reached. Lack of tension prevents slack in the timing chain from being taken up. When I've done timing chains or cams on an SBC, there is a little slop in the chain, but not a whole bunch. How To Check Timing Chain Slack - EricTheCarGuy- Stay Dirty!. Then pop the distributor cap off the distributor.