stripped dizzy gear

[VRSS]

hey everyone need a little help i've stripped my distributor gear.. i have another in the shed in my old VK thats off the road, are they hard to replace or would i be able to do this easily on my own? because i dont have the money to get it done by a mechanic and i cant afford to have my car off the road as i dont have access to another.
thanks for any help

[Pub247]

As far as i know its easy some people recommend using the metal ones from oil pumps hope it goes ok

[vkberlina]

If its a 202 definitely use a oil pump gear or a brass gear instead of the original nylon gear. Its just a matter of using a centre punch to press out the roll pin out of the dizzy & oil pump, fitting the metal gear to the dizzy.

You will most likely need to set the end float in the dizzy shaft, it should have a little float. Test fit the gear and use a jewlers screw driver as a tempory pin on the dizzy gear while you test end float.
When setting the end float make sure the hall effect lines up at the top of the dizzy.

cheers
scott

[DANNY8]

I was gonna go a brass gear for mine when it broke, but a mate at Repco said if something goes wrong and it's bad enuf to break the nylon gear, wouldn't u rather break the nylon gear then have a brass gear and possibly do further damage. Eg: Maybe you could stuff the gear on the cam up then u need to replace the cam, but if u use a nylon gear and it breaks all u have to replace is the nylon gear.

I haven't been playing with motors long enuf to know wat would go wrong bad enuf to stuff the gears up, but I don't really wanna take the risk.

But as we know a lot of people put the metal and brass ones on, so maybe it could be ok?

[vkberlina]

I was gonna go a brass gear for mine when it broke, but a mate at Repco said if something goes wrong and it's bad enuf to break the nylon gear, wouldn't u rather break the nylon gear then have a brass gear and possibly do further damage. Eg: Maybe you could stuff the gear on the cam up then u need to replace the cam, but if u use a nylon gear and it breaks all u have to replace is the nylon gear.

I haven't been playing with motors long enuf to know wat would go wrong bad enuf to stuff the gears up, but I don't really wanna take the risk.

But as we know a lot of people put the metal and brass ones on, so maybe it could be ok?

The reason most dizzy gears in the early commodores strip is due to the nylon becoming brittle from the heat of the engine over an extended period of time.
Other causes for a dizzy to strip could be for the dizzy to lock up at the rotor button end. For this to happen something needs to get inside the dizzy cap... pretty unlikely.

Another reason could be excessive cam shaft movement in the engine (dizzy is driven off the cam) causing the gears not to mesh correctly. It is possible for some mechanical interference of some form of debris inside the engine to work its way between the dizzy gear and the cam shaft.

I ran metal dizzy gears on my 202s for about 7 years without problems the current owners of 2 of the engines havent had problems either.

cheers
scott

[NOT.BT1]

i use a metal or brass oil pump gear cause i changed about 4 nylon gears in as many months as soon as i put the brass gear on i have had no problems and that was 3 years ago now mate as i said on msn last night just get your self a timing light so you can reset your timing that is the hardest part good luck

[VRSS]

i replaced the dizzy gear, but the car still wont start. it keeps backfiring through the carby when i try and crank over

and it broke the main thing in the center of the dizzy cap the bit that pushes in dont know what its called sorry but it snapped that clean off.

i have another distributor cap but im not game ernough to put it on and try to start again incase it snaps the little thing off and then i wont have another one..

could it be my broken dizzy cap causing it? thanks

[vkberlina]

That "little springy thing" is what sends the spark to the rotor button, you may get some arcing out causing it to miss fart & backfire. replace the dizzy cap.
You could also have the dizzy 180deg out as well.

cheers
Scott

[VRSS]

That "little springy thing" is what sends the spark to the rotor button, you may get some arcing out causing it to miss fart & backfire. replace the dizzy cap.
You could also have the dizzy 180deg out as well.

cheers
Scott

sorry i didnt know what it was called. im pretty sure the dizzy is in the right position i marked it before i took it off. i will try replacing the dizzy cap and see what happens thanks!

[VRSS]

thanks everyone its fixed was my dizzy cap and i had to roughly redo the timing

[DANNY8]

I ran metal dizzy gears on my 202s for about 7 years without problems the current owners of 2 of the engines havent had problems either.

Well that's good enuf for me.....I might chuck a metal one on then

[Bilbs]

I personaly advise against the metal gear, i had to do an engine swap on my old vk due to metal dizzy and a stripped cam gear, i could have just changed the cam, but a m8 offered to swap the 16"s i wasnt using, so, but i changed it to a nylon gear, never had a problem with it, if you snapped 4 in 4 months, then there must have been something wrong, i onli ever changed 1 nylon gear on a 202, so i would prefer to do the nylon and avoid costly engine damage

[robbo10]

Just red this today.
If your set on using a metal gear, go the brass one. The brass ones are softer than the steel and will wear without harming the camshaft. Just like the nylon ones. If the distributor is set properly no-one should have a problem. If you overheated the motor that may have contributed to the nylon gears getting destroyed.
Like boiling it dry, running low on oil in the sump, oil in the sump not up to the job or old or (like some people do) using s/hand oil or doing burnouts with the vehicle sitting in the one spot for a long time.
The radiator cooling fan does work but it's not that good.