HELP! Timing Chain Sprocket Problems

[4X4HIGH]

Guess my information was wrong

Well just because you found that info on the internet somewhere doesn't make it right. Keep in mind that I was an automotive machinist for 22 years and have probably built more engines than most everybody on this forum. There is NO WAY in hell I would EVER have a thrust set-up anywhere below .005" and NEVER at .002"

 

[kauzenkaos]

I wasn't doubting you. This wouldn't be the first time snapon shopkey (Mitchell) has had the wrong information. You would think for 100 something dollars a month I could get the right info.
The Internet somewhere

 

[Cili]

The motor is a 1980, should be all stock bottom end. The torque converter is stock i believe too. The distributer and the fuel pump are off so that cant be causing it. And the cam is sticking out of the block a little but not enough to let the sprocket go on all the way. What exactly do you mean by roller block? and bad ground on the motor? Sorry this is the first time iv really been inside a motor. Thanks for all the help though.

Also, by chance does the cam just need to come out a little? Like if I put the sprocket on and tighten the bolts to pull the cam out? I thought about this but it doesnt seem like a good idea because then the lobes of the cam wouldnt be centered with the lifters.

 

[kauzenkaos]

How does the cam gear fit the cam gear fit on the cam without the chain installed? And your right never pull anything down with the bolts except maybe a clutch pressure plate. When you put the cam gear on is it easy to start the 2 bolts by the pin and hard to get the last bolt in? Still sounds like maybe the crank gear isn't installed all the way.

 

[kauzenkaos]

Well just because you found that info on the internet somewhere doesn't make it right. Keep in mind that I was an automotive machinist for 22 years and have probably built more engines than most everybody on this forum. There is NO WAY in hell I would EVER have a thrust set-up anywhere below .005" and NEVER at .002"

4X4High
I apoligize for taking offence last night to your "internet somewhere and no way in hell comment". I also take pride in the fact that i make sure my info is correct or correct to the best of my knowledge prior to posting. That being said the spec in both chilton and motor books from the 80'S is .002 to .006. Trust me i also understand that after being a tech for 10 plus years theres always a preferred way of doing things.

 

[Cili]

Let me go out there and check. But someone else just told me that there is such thing as a spacer. He races cars and builds all is own motors so I think hes pretty reliable.

 

[kauzenkaos]

looks like theres a crane kit that uses a thrust washer or needle bearing but they are only used with those specific kits. What kit you using?

 

[Cili]

Both the cam and timing set are summit brand. The timing set is a double roller.

 

[Cili]

I pressed the crank sprocket on all the way and that got me closer but it still sticks out a hair farther than the top. Supposedly the local auto parts store that carries a bunch of racing stuff has the shim so im gonna stop in the morning and ask, if so then everything should be perfect

 

[496truck]

Let's not forget the parts could be packaged wrong, mislabeled, or pulled wrong. In that case it is very possible that you could be installing the timing set for the newer block on your old block.

Not saying this is definitely the problem but it is one possibilty. Pick up another new timing set at the parts store for your block and try that one.

 

[4X4HIGH]

Let's not forget the parts could be packaged wrong, mislabeled, or pulled wrong. In that case it is very possible that you could be installing the timing set for the newer block on your old block.

Not saying this is definitely the problem but it is one possibilty. Pick up another new timing set at the parts store for your block and try that one.

If you mean newer as in roller block the timing gear bolt pattern is different and you physically could not even bolt the gear to the cam. The roller cam uses a smaller bolt circle because of the use of the thrust plate that is used on those engines.

 

[496truck]

See, ya learn something new every day. I've never torn down a roller block. But I am in the parts business and have seen wrong parts in the right packages many times over. Scott, would you say wrong parts is ruled out then?