What would be better for timing,timing gears or chain

 

Either will work fine. You don't get the accumulated wear and slop of a chain if you use a gear drive, but you also get the extra noise. I'd say a good quality sprocket and chain timing set will be adequate for all but extreme performance applications.

Just be aware that some of them do come retarded from the factory. Others will have provision to install cam straight up, a few degrees advanced, or a few degrees retarded.

 

From what I have heard:

Gears are more reliable, keeps timing a bit more accurate, but can be noiser than chains. (?)
Chains are said to be quieter but can stretch as they wear.

I would almost side with the gears.....

 

A chain will absorb harmonics where gears will transfer them. Every motor has harmonics which can be a silent killer.

 

Absolutely Nick and with a good quality chain stretch will be at a minimum. The Chinese stuff is what stretches quickly.

 

I went with a Cloyes Tru roller. Suppost to be made in the U.S.(?)

 

Do you have the adjustable version (Hex-adjust, i think)? Would you happen to know the advantages/disadvantages of the original true roller vs. the adjustable?

d1

 

I have been using the Cloyes True Roller Chain for 40 years. Minimal stretch, moderate cost, very reliable. For example, I have re-checked cam timing on one I installed in the 70s and it still has the cam straight up when I use the zero notch on the crank gear. Sure, it doesn't have tens of thousands of miles on it, but it does have probably a thousand miles on it and a lot of racing.

 

Mine is not the adjustable one. Don't know about the other. My engine builder set mine straight up.

 

Cloyes street roller. Seems to be one of the few timing sets that are accurate as far as their markings go.