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I have an 82 that i converted to carb. When converting to carb i went ahead and replaced all the gaskets. Also replaced the timing chain with a cloyes double chain. Literally drove it on a Saturday, drove fine. Then drove it on a sunday and it was acting like a vacuum leak. Already knew what was going on cause i had the same issue on another sbc. The timing chain prematurely stretched. So i took it all apart and decided to go back to the original style silent chains which was the cloyes brand also. So went to put it on and and it was really loose. Whats going with cloyes now a days, ive always used cloyes and never had issues. Now they seem to be of poor quality. With all that being said what brand timing chains are yall using? Im wanting the single link type silent chains. Dont feel like donjg this again.
I have an 82 that i converted to carb. When converting to carb i went ahead and replaced all the gaskets. Also replaced the timing chain with a cloyes double chain. Literally drove it on a Saturday, drove fine. Then drove it on a sunday and it was acting like a vacuum leak. Already knew what was going on cause i had the same issue on another sbc. The timing chain prematurely stretched. So i took it all apart and decided to go back to the original style silent chains which was the cloyes brand also. So went to put it on and and it was really loose. Whats going with cloyes now a days, ive always used cloyes and never had issues. Now they seem to be of poor quality. With all that being said what brand timing chains are yall using? Im wanting the single link type silent chains. Dont feel like donjg this again.
Are you installing new cam and crankshaft gears along with the chains?
For its timing chain lubrication, sbc relies primarily upon the "Leaks" from front of its pressurized #1 cam bearing insert; there are two large openings in china wall from where some oil flows via gravity.
were there then, and are there now, any indication the timing set suffers from lack of lube ?
have you replaced heads' valve springs with particularly stronger springs ?
has the OE "standard-volume" oil pump been replaced with a high-volume "race" pump ?
Is it possible the camshaft's five bearing journals are binding-up within its five cam bearing inserts ?
have the OE cam bearing inserts been replaced ? if yes, were each of them "clocked" correctly ?
For its timing chain lubrication, sbc relies primarily upon the "Leaks" from front of its pressurized #1 cam bearing insert; there are two large openings in china wall from where some oil flows via gravity.
were there then, and are there now, any indication the timing set suffers from lack of lube ?
have you replaced heads' valve springs with particularly stronger springs ?
has the OE "standard-volume" oil pump been replaced with a high-volume "race" pump ?
Is it possible the camshaft's five bearing journals are binding-up within its five cam bearing inserts ?
have the OE cam bearing inserts been replaced ? if yes, were each of them "clocked" correctly ?
Its a stock motor. Never been touched. Had the same issue with the sbc i have in my 61 impala using the same double chain. Replaced with original type silent chain and solved my problems on my 61. Figured id do the same on my 82 except
the chain was loose out of the box. Any suggestions on a timing chain set and brand?
I have an 82 that i converted to carb. When converting to carb i went ahead and replaced all the gaskets. Also replaced the timing chain with a cloyes double chain. Literally drove it on a Saturday, drove fine. Then drove it on a sunday and it was acting like a vacuum leak. Already knew what was going on cause i had the same issue on another sbc. The timing chain prematurely stretched. So i took it all apart and decided to go back to the original style silent chains which was the cloyes brand also. So went to put it on and and it was really loose. Whats going with cloyes now a days, ive always used cloyes and never had issues. Now they seem to be of poor quality. With all that being said what brand timing chains are yall using? Im wanting the single link type silent chains. Dont feel like donjg this again.
Originally Posted by Brown Bandit
Its a stock motor. Never been touched. Had the same issue with the sbc i have in my 61 impala using the same double chain. Replaced with original type silent chain and solved my problems on my 61. Figured id do the same on my 82 except
the chain was loose out of the box. Any suggestions on a timing chain set and brand?
Never seen a chain stretch far enough you'd notice it with the issues you described. Got pics or measurements? Cam degreed before and after? That would be a LOT of cam retard.
It's been a while...but I've used $30 Cloyes chains sets on my BBC's with insane solid roller valve springs, .750"+ lift and 8000 RPM for years on street and track with no issues.
Maybe something is up but that sounds real strange.
Never seen a chain stretch far enough you'd notice it with the issues you described. Got pics or measurements? Cam degreed before and after? That would be a LOT of cam retard.
It's been a while...but I've used $30 Cloyes chains sets on my BBC's with insane solid roller valve springs, .750"+ lift and 8000 RPM for years on street and track with no issues.
Maybe something is up but that sounds real strange.
JIM
No it is definitely the brand, just seen a few videos about the quality going to the sh**s. Or maybe just the ones being sent to the local auto parts stores. Who knows?
I looked this one up, it doesnt have a warranty. All timing chains in the past ive had have warranties. Should i be worried that a company wont warranty their product? Ive bought Melling parts in the past, but never a timing chain.
Is this the Cloyes part number you used? Timing Chain
The first picture is of the timing chain that i had on that didnt last too long. The second picture is of the one that was loose from the start, when it was just put on.
I looked this one up, it doesnt have a warranty. All timing chains in the past ive had have warranties. Should i be worried that a company wont warranty their product? Ive bought Melling parts in the past, but never a timing chain.
Most Melling hard parts have a limited warranty.
However, Most manufacturers don't warranty Performance or Competition parts.
The timing set I recommend IS a Performance part; Melling chooses not to warranty Performance or Competition parts.
Regardless, I chose it because it has a particularly robust design; .334" OD rollers are BIG. All that w/ only 46 links.
You can also find a similar set with only ONE keyway, but still similar 46-link robust design; while with Limited Warranty.
It would seem the sets that have failed you did have a Limited Warranty. Did you attempt to apply that as a remedy ?
Perhaps there's more to this, that's not apparent to the bystander; nor due bad timing set piece(s) ?
I looked this one up, it doesnt have a warranty. All timing chains in the past ive had have warranties. Should i be worried that a company wont warranty their product? Ive bought Melling parts in the past, but never a timing chain.
Most Melling hard parts have a limited warranty.
However, Most manufacturers don't warranty Performance or Competition parts.
The timing set I recommend IS a Performance part; Melling chooses not to warranty Performance or Competition parts.
Regardless, I chose it because it has a particularly robust design; .334" OD rollers are BIG. All that w/ only 46 links.
You can also find a similar set with only ONE keyway, but still similar 46-link robust design; while with Limited Warranty.
It would seem the sets that have failed you did have a Limited Warranty. Did you attempt to apply that as a remedy ?
Perhaps there's more to this, that's not apparent to the bystander; nor due timing set piece(s) ?
The first picture is of the timing chain that i had on that didnt last too long. The second picture is of the one that was loose from the start, when it was just put on.
Neither one is the top quality chain in the link I provided. Timing Chain
So ordered the Melling 40500 timing chain. Seems like a robust timing chain which is always good, but my concern is there is very minimal and i mean every minimal space between the camshaft gear
and crankshaft gear. Look at the pictures. Not even a 1/16" . You can barely see daylight between the 2 gears. Im thinking they are going to hit eachother when in the engine and rotating. Whats yalls opinion on this?
So ordered the Melling 40500 timing chain. Seems like a robust timing chain which is always good, but my concern is there is very minimal and i mean every minimal space between the camshaft gear
and crankshaft gear. Look at the pictures. Not even a 1/16" . You can barely see daylight between the 2 gears. Im thinking they are going to hit eachother when in the engine and rotating. Whats yalls opinion on this?
Did you check that with both gears bolted up to crank and cam?
Timing Chain
