alrosenzweig

All new engine put in a 1990 ... removed the block 2 bolt main now 4 bolt main...all new everything except crank, .... 6000 miles on the new engine...and brass gear base of distributor shaft.... this is a garage queen.... that I step on occasionally..... the wear is centered and 4 teeth have rolled over/off.... so why did this happen?
and I have a 7 pin electronic ignition module..... hard to find the dist gear... 5 pin are easy ? to find.... I have experts helping me.... but I like my corvette forum experts A LOT !
thanks in advance.

al

JackDidley

Im guessing its actually a bronze gear. Common when using aftermarket roller cams. They are a maintenance item. 6000 miles is too long to run one, based on what my drag racer buddies say. They replace them yearly on drag cars that dont run near that much.

MrWillys

Here's the answer:
http://www.summitracing.com/parts/ACF-10456413/

I would also drain oil now, and run 25 miles and change again to remove yellow metals.

Then there's the whole **** argument of using GL5 or GL4 oil standard with yellow metals I'll let other **** and moan about.

alrosenzweig

thanks jack and mr ******.... yes of course bronze my bad.... I'm a car/engine enthusiast sp? but need to learn more..... I don't want this to happen every 2 years..... I mean if I was drag racing I would understand..... seems odd .... 2 yrs? less than 6 yrs

alrosenzweig

yep plan to change oil and run 25 miles....that should have said less than 6000 miles on new engine the bronze seems really soft....

cv67

Only reason to run a bronze gear is if you have a billet cam gear

WHat material is your cam gear? Have grind #?

I run a Lunati everwear gear on a billet cma gear ok so far (200 mi)

Leave the billet/bronze stuff for the track only. All it does is wear stuff out. HV pump makes it even worse


Took me 5 oil changes to get all the bronze out. It is soft and probably wont hurt anything;very fine, goes right through the oil filter

MrWillys

The gear I posted can be run in lieu of a bronze gear and not experience the short lifespan.

alrosenzweig

thank you guys.... I will get back to on info re cam gear and no.. it's a comp cam .... I will need to find my paperwork

cv67

Make sure its not shimmed too tight and your cam enplay isnt out of whack.

****** didnt see your link.

383vett

[QUOTE=cuisinartvette;1584394443]Only reason to run a bronze gear is if you have a billet cam gear

WHat material is your cam gear? Have grind #?

/QUOTE]

If your cam is not billet, run an iron gear and you will be fine. If you run a bronze gear on a non billet cam, your gear will last about 6000 miles.

alrosenzweig

***** what do you think of the composite gear comp cams offer? again this is a garage queen I step on occasionally. thx al

alrosenzweig

[QUOTE=383vett;1584394968]I am researching the billet question the cam we installed is comp cam 08-304-8 grind number 266HR-14..... thanks all

MrWillys

With a Comp cam a stock distributor gear can be used. The melonized gear I posted was factory on GM billet cars. Comp made it even easier, but if you want theirs it should be good.

cv67

pretty sure -8 indicates cast core doubt hes got a billet gear
Doesnt hurt to double check on that though.

Just dont use that plastic (imo pos) gear they sell.

alrosenzweig

that should have said less than 6,000 miles

alrosenzweig

you mean that carbon ultra poly composite gear ? part no 12200 at com cams?

alrosenzweig

now I'm hearin things like ...."you have a 7 pin electronic ignition module so finding the "right" gear is difficult" ?? where's Tom W !!!!! LOL..... I have a ton of money in this engine..... from a guy that allegedly knows what he is doing.... builds racing engines for a LOT of people..... and has for 30 years....so I'm a bit perturbed

alrosenzweig

that should have said less than 6,000 miles

looks like I'm not billet

mtwoolford

First, I'd ask my builder WHY a brass or bronze distributor gear was installed in the first place; he should know.

383vett

The 7 pin module has nothing to do with the type of gear on the cam. That only means that your distributor is computer controlled. The cam doesn't know whether the motor is carbureted or computer controlled.