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Discussion Starter · #1 ·
does any one sell a short timing chain for a block that has been line bored?i am looking for a street performance roller chain and gear set that is .005 shorter than stock.i have a new ford racing one but chain is to loose when installed.any help out there?this a 69 429 engine.
 

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Billet Double Roller T-Chain Sets, and a Warning

I carry the .005 under size Rollmaster Billet 9 pisition indexable chains in stock. These are the absolute best timing sets on the market, and cheaper than the equivalent Cloyes by quite a bit. The Rollmasters use the premium German made JWIS chains, and both gears are billet steel. If you still need one, let me know and we'll help you out.


While I'm on the subject.......
One really needs to check their timing chains closely on installation. We just had a customer bring us a Comp Cams billet chain for his 520 build. Real nice looking, made by S-A Gear. But, it comes with a note in the package that mentions that you might have to machine the nose on the cam as they did not make the cam gear with the proper depth to get the correct cam thrust. Sure enough, it was wrong, and the chain had way too much thrust. We then checked for runout, and it was significant. We didn't even have to measure it. As we turned the engine over, the chain went from tight to loose. The cam gear was machined off center and was acting like an eccentric. We've seen this quite often with the S-A Gear sets that everyone is selling, and a number of times with the Cloyes. That chain went back in the box, and we installed a Rollmaster. These examples are all with upper grade .250" roller chain sets. I don't typically work with the budget level chain sets. Also, the cheaper the chain set, the smaller the roller pin used. Double Roller chain sets are available with roller pin sizes of .180", .200" .220" and .250". That's why a Cheby guy can buy a "Double Roller Timing Set" for $15!

The other area to be aware of is that the chain could actually throw the cam timing off. I've had both the S-A and Cloyes come up off when we degree the cam. We put a Rollmaster on for comparison, and the timing comes back to normal. One S-A Gear set put the cam timing 12* off on a 460 build. Good thing we checked it and it wasn't the customer just installing it dot to dot! With all the problems we've had over the years with chains, I try to move our customers into a Rollmaster Timing set on EVERY build. So far, knock on the old wood, with well over 500 Rollmaster Timing sets sold & installed, we have yet to have a problem with one. (Besides being tight on the crank snout-they are all sized small and will be tight on Scat/aftermarket cranks.)

Besides not fitting correctly, excessive stretching in use, and improperly indexed cam timing, we've heard of quite a number of actual timing chain failures on the dyno, when using one aftermarket billet chain in particular. Like every other component you choose, it pays to investigate. And just because it comes from a "name brand" doesn't make it good.

Rob McQuarie
Blue Oval Performance
303-762-8298
 

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And just because it comes from a "name brand" doesn't make it good.
Very true! Maybe 10 or more years ago, it was much better.
 

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to loose?

dont mean to hijack the thread but how loose is to loose? my block has also been line honed once,the chain is not as tight as it should be but i would not call it loose.maybe 1/4" side to side on the chain. about a good 2* crank movement, to much?
 

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Discussion Starter · #6 ·
thanks for the great replys

dont mean to hijack the thread but how loose is to loose? my block has also been line honed once,the chain is not as tight as it should be but i would not call it loose.maybe 1/4" side to side on the chain.
my chain has aat least the 1/4 per side,i measured about 2-3 crank degrees of movement.to much for me.
 

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The S-A gear timing sets SUCK. You call them to make them aware of the problem and it's not their fault. "INSTALLED IN-CORRECTLY" is the answer you always get.
 

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Discussion Starter · #8 ·
thanks for good info

I carry the .005 under size Rollmaster Billet 9 pisition indexable chains in stock. These are the absolute best timing sets on the market, and cheaper than the equivalent Cloyes by quite a bit. The Rollmasters use the premium German made JWIS chains, and both gears are billet steel. If you still need one, let me know and we'll help you out.


While I'm on the subject.......
One really needs to check their timing chains closely on installation. We just had a customer bring us a Comp Cams billet chain for his 520 build. Real nice looking, made by S-A Gear. But, it comes with a note in the package that mentions that you might have to machine the nose on the cam as they did not make the cam gear with the proper depth to get the correct cam thrust. Sure enough, it was wrong, and the chain had way too much thrust. We then checked for runout, and it was significant. We didn't even have to measure it. As we turned the engine over, the chain went from tight to loose. The cam gear was machined off center and was acting like an eccentric. We've seen this quite often with the S-A Gear sets that everyone is selling, and a number of times with the Cloyes. That chain went back in the box, and we installed a Rollmaster. These examples are all with upper grade .250" roller chain sets. I don't typically work with the budget level chain sets. Also, the cheaper the chain set, the smaller the roller pin used. Double Roller chain sets are available with roller pin sizes of .180", .200" .220" and .250". That's why a Cheby guy can buy a "Double Roller Timing Set" for $15!

The other area to be aware of is that the chain could actually throw the cam timing off. I've had both the S-A and Cloyes come up off when we degree the cam. We put a Rollmaster on for comparison, and the timing comes back to normal. One S-A Gear set put the cam timing 12* off on a 460 build. Good thing we checked it and it wasn't the customer just installing it dot to dot! With all the problems we've had over the years with chains, I try to move our customers into a Rollmaster Timing set on EVERY build. So far, knock on the old wood, with well over 500 Rollmaster Timing sets sold & installed, we have yet to have a problem with one. (Besides being tight on the crank snout-they are all sized small and will be tight on Scat/aftermarket cranks.)

Besides not fitting correctly, excessive stretching in use, and improperly indexed cam timing, we've heard of quite a number of actual timing chain failures on the dyno, when using one aftermarket billet chain in particular. Like every other component you choose, it pays to investigate. And just because it comes from a "name brand" doesn't make it good.

Rob McQuarie
Blue Oval Performance
303-762-8298
i will call you monday and see if i can order one of these.the cloyes was $139 any way,and i would rather have the rollmaster any day.dan.
 

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Discussion Starter · #9 ·
short timing chain feedback

thanks rob,that was a perfect fit.not to tight,just a little play to install.fast shipping as well.great guy to deal with.this is the .005 short rollmaster.dan.
 
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