Hi, I have to change my original timing gear. I read last couple posts published in 2011 and 2013 about that topic but couple years past and maybe some interesting information’s could be share here about experienced. I would like to have opinion, experiences and expertise about which timing gear I’m better to use in 2016. I have a generator on my T’s. I heard the nylon is quieter running gear with excellent vibration resistance but I’m aware to use it with my generator… The Aluminum gears were strong but some folks said they are noisy. The Bronze gear supposed to runs quitter than aluminum but also very expensive $150 than others timing gears ($53-$63).

It is in the cut of the gear, some gears are made from different machines, the best gears out there are DMC gears, you may pay more for them but they are the best. I have built enough engines and played with different gears to find out this the hard way. just my thoughts!

Here's a recent timing gear discussion:
http://www.mtfca.com/discus/messages/599638/603624.html?1452556307

You won't be sorry with a good used steel, a new alu or a new bronze large timing gear. There are other alternatives that works for some guys but not for others. Your choice

(Message edited by Roger K on March 31, 2016)

I don't notice any noise from either the aluminum gear or the bronze gear. Steel gears are also quiet if in good condition.

A Model T isn't supposed to be quiet

(with a stripped nylon/fiber gear it'll be very quiet but no fun at all )

If you're replacing the large timing gear w/a new one, you should also replace the small timing gear at the same time, unless it's in like new condition.
It's poor economy to run a new gear against a used gear.

Replace the generator gear too if you are running a generator.
Norm

IMHO just replacing the large time gear will get the job done. If the engine is out of the car for a complete overhaul then replacing all 3 gears is the way to go.

At least replace the generator gear too. That's not hard to do and will reduce lots of noise. I've been replacing timing gears for the past several years now because when I had my engine apart years ago, when it would have been easy, I took the shortcut of not replacing the crankshaft gear. True, just putting a new timing gear on will "get the job done", but a worn gear, running against a new gear, in a short time, makes two worn gears.

Thank you all for the great comments and advice. I will change the all 3 gears and will order them from Dan at DMC gears.

Just bite the bullet and get the bronze one. That's my vote. Mainly because that's what I ended up doing.

Hi gentlemen, Both gears changed. Dan at DMC gears made nice quality gears. Mario

Not Nylon!

Aluminum !!!

Here pictures of the old Timing gear... You know why I changed... Mario

Suggest that you check the gear on the generator, if it's bad it could chew up the new camshaft gear.
For the price of a new one it might not hurt to replace it to be on the safe side, you wouldn't want to chew up that nice new aluminum gear.

Find a NOS original fiber timing gear (Sears, Montgomery Ward etc). Best replacement in its day. I have run these old ones many, many years with no problem. Don't confuse my remarks as referring to New fiber gears. These seem to fail all the the time. These old gears are out there.

I have both: quality aluminum and bronze timing gears in differing engines. Both run well. If you run a generator, either choice will work well. One of my engines I pulled down had a fiber timing gear in it that was chewed up and missing teeth. Replaced that with the aluminum gear. No regrets there, works great. If I want to drive a quiet vehicle I just take the new truck.

I also change my generator gear. I'm probably good for another 100 years.

Mario
Be sure to use a gasket between the generator side mount and the engine block i.e. NOT just silicone!. After installing the generator check to see if you have some gear lash between the cam and generator drive gears. You can usually simply use your fingers down the oil filler hole and feel if the gears have some clearance. If you need additional clearance use one additional side mount gasket.
Ron Patterson

I would not run a fiber gear with a generator. Also, the way your cam gear is pitted, if the crankshaft gear is likewise pitted, it will make quick destruction of a fiber gear. A metal gear is the best way to go. Very best way would be to replace all 3 gears. However it would be hard to replace the crankshaft gear without pulling the engine. It could be done but you would need to remove the crankcase bolts and jack up the front of the engine. Then it would be hard to seal the crankcase again.
Norm

Thank you for the great advice Ron. I will install a nice rebuild generator you sold me couple years a go with a new gear... And your advice just arrive in good time Before I made mistake. I love this forum, people are so nice!