Posted By: GLR
Timing Chain too loose on new-rebuild stroker ..HELP - 06/21/09 05:46 PM
I had a stroker engine 400/452 rebuilt again because the thrust bearing went bad. It was allign bored again and when I brought it back from the engine shop I started to assemble the engine and the timing chain is way too loose on this engine. If you make one side of the chain tight and put a straight edge on the opposet side and measure the amount of slop at the highest point is a little over a 1/4 inch!
Do one of the timing chain companies have a shorter chain or larger gears to fix this problem?
Please reply if you know how to fix this problem.
Thank you!
glr7069@ptd.net
Posted By: 1_WILD_RT
Re: Timing Chain too loose on new-rebuild stroker ..HELP - 06/21/09 05:52 PM
Undersized chains are avalible from most chain suppliers
Posted By: ph23vo
Re: Timing Chain too loose on new-rebuild stroker ..HEL - 06/21/09 05:53 PM
you can buy a tensioner for it IIRC from one of the racing companies dan
Posted By: dodgefarmer
Re: Timing Chain too loose on new-rebuild stroker ..HELP - 06/21/09 06:04 PM
Cloyes 9-3104 (std.) 9-3104-005 (5 under) or 9-3104-010 (10 under) single bolt. I don't have my 3 bolt set at home so I'm unable to give you that pn., but if you use the appropriate 3 digit suffix on it you will get the same results.
HTH
Randy
Posted By: DAYCLONA
Re: Timing Chain too loose on new-rebuild stroker ..HELP - 06/21/09 06:19 PM
You could use an undersized chain, and hope that solves your problen,...if you have a 3 bolt cam, you could run a dual idler gear drive, bolt in, the gear lash/gap is determined by offset bushings,....Jegs has them for a $275-$300 .....BB Mopar PN# 20360 or 20361, quiet/noisey......Jegs 1 800 345 4545 or Jegs.com
Posted By: solidcam
Re: Timing Chain too loose on new-rebuild stroker ..HELP - 06/21/09 07:24 PM
Use a chain set of the correct undersize.The dual idler gear drives have a reputation for poor reliability.
Posted By: GLR
Re: Timing Chain too loose on new-rebuild stroker ..HELP - 06/21/09 08:12 PM
Thanks everyone for all of your suguestions. I think I will see about a smaller chain, sounds like a good idea and I am sure is cheeper than getting another type of timing set.
What is the best way to figure out what size chain I will need?
Posted By: Supercuda
Re: Timing Chain too loose on new-rebuild stroker ..HELP - 06/21/09 08:54 PM
Bought a cheapo Cloyes (stock replacement) that was too loose on a stock unrebuilt engine, just preventative maintenance in replacing the chain at 100k miles on a 318. Sent it back and got a quality set, Edelbrock in this case, fit nicely.
Might be the kit is loose, but since you've had a line bore or two done, might need a undersized chain. Anyone know how to measure and tell for sure?
Posted By: GLR
Re: Timing Chain too loose on new-rebuild stroker ..HELP - 06/21/09 09:10 PM
Yea...that is my question now...how to measure so i can ask for the right size chain.
Posted By: GLR
Re: Timing Chain too loose on new-rebuild stroker ..HEL - 06/22/09 12:38 AM
Well, I hope I can get a chain that will fit and take care of this problem.
Posted By: Kelob_pie
Re: Timing Chain too loose on new-rebuild stroker ..HEL - 06/22/09 05:09 PM
Before I used the Rottler, I stacked up Jo blocks between cam and crank and just did the math to find out what size chain to get. Now with the Rottler, I measure what size chain is needed before the block gets pulled off the machine. Super quick and easy.
Posted By: Supercuda
Re: Timing Chain too loose on new-rebuild stroker ..HEL - 06/23/09 12:28 AM
Wait, let me pull the Rottler out of my pocket... oh wait.
Jo Blocks are a good idea, much cheaper than a Rottler, but not cheap. Maybe a center to center measurement with a dial caliper?