Replacing the timing chain with a timing gear?

[keitheturner]

What is the procedure for replacing the timing chain with a timing gear?

How do you adjust the gear to set the timing?

Answer here or send a note to KEITHETURNER@HOTMAIL.COM

Thanks!

 

[Hijinx]

Keith,
Are you racing it only? Gears are primarily for race only cars. They do not do well on street drivers. At least that is what I have heard. No actual experience.

 

[Robin7TFour]

the crankshaft gear will have offset keyways just like a chain system. so you can set your timing to match your cam specs. the cam and crank gears are lined up just like a chain set-up. there are two idler gears(on on each side) that hold the sprockets in time.
i would recommend the silent gear type. unless you like the whiney sound of a blower.

 

[JohnZ]

Complete waste of money for a street-driven car; after a month, you'll hate it (maybe sooner) :eyerole

 

[keitheturner]

After getting input from a lot of folk, most of whom think the gear is overrated and that the noise will get tiresome and annoying after a while and considering the expense and effort to put the stupid thing in, I've decided to for goe this portion of my project.

Soooooo....how do I add dual carbs with that blower looking thingy on top?

<Big SMILE>

 

[Robin7TFour]

keith, get out your checkbook and a pen with lots of ink..


robin

 

[Jack]

Along with the other reasons to avoid a gear drive ... all good ones ... here's another:

Chains tend to pull the front of crank upwards ... into the main webbing ... where block is strong ... not a problem.

On the contrary ... most gear drives tend to push the front of crank downward ... into the front main cap ... which is not nearly so strong as the blocks webbing ... potentially a problem.

I spend a bit of time around circle track cars, Busch cars & Craftsman trucks. I've yet to see any of those race motors based on american V8 use gear drive. Good quality true roller set w/ double, seamless .250" rollers is all you'll ever need for a street car ... quiet, accurate, long-lived & nearly bulletproof. Maybe gear drive is good for dragster ... I dunno?
JACK:gap

 

[JHL]

I will chip in here, I have posted comments on this before so you could do a search and find them. I put a geardrive in my engine and have had no problems. After a short while with an Edelbrock RPM cam I changed to a more streetable Comp Cam. When I took it apart to change over there was no noticble wear on the gears or block.

I spoke to a couple of people that had ran with geardrives for a considerable amount of miles and they reported no problems. As for the noise, maybe in hindsight a quiet set would have been better but I don`t drive it so often so it`s ok. Fitting it was simple and there is a good amount of ajustment by way of a set of ecentric bushes for cam timing and it looked to be of good quality but time will tell. For me it is simply the most accurate set up as no mater how good a chain is it will eventually stretch.

Edelbroke do a nice low rise 2x4 bbl set up for small blocks which is not outragously expensive them you can top it off with a Hillborn scoop, not a blower but looks ok.

J.