'84 K5 Build (Midlife Crisis)

[Fastereddie]

That’s the same one. 265B
The only conclusion I can come to is my flywheel is too thick???
It is an older 2pc. rear main engine. The google foo I did said a 1 and 2 pc flywheel were the same height. Maybe they are not

 

[1-ton]

What size clutch do you have...is it 12", 11", or 10"? Maybe the clutch you have is too big for the input shaft to fit the throw out bearing and clutch fingers.

 

[ZooMad75]

That’s the same one. 265B
The only conclusion I can come to is my flywheel is too thick???
It is an older 2pc. rear main engine. The google foo I did said a 1 and 2 pc flywheel were the same height. Maybe they are not

That’s bazaar. I thought they were. It’s the opposite of what Larry ran into on his when the machine shop hogged too much off the last time they resurfaced the flywheel.

 

[1-ton]

That’s the same one. 265B
The only conclusion I can come to is my flywheel is too thick???
It is an older 2pc. rear main engine. The google foo I did said a 1 and 2 pc flywheel were the same height. Maybe they are not

Over on Sandhill and Sunset Road there is a place called P&O Brake owned by a guy named John that can deal with flywheel issues.

 

[Fastereddie]

That’s bazaar. I thought they were. It’s the opposite of what Larry ran into on his when the machine shop hogged too much off the last time they resurfaced the flywheel.

Yeah I remember reading about that.

 

[ZooMad75]

Just doing some googling, nobody shows a listing of the thickness of the flywheels. Only major difference is the diameter of the bolt circle besides the tooth count and clutch surface diameter.

 

[Fastereddie]

Just doing some googling, nobody shows a listing of the thickness of the flywheels. Only major difference is the diameter of the bolt circle besides the tooth count and clutch surface diameter.

Yeah from what I found online and also what centerforce said the only difference is the crank mount/pattern. The face depth in relation to bellhousing/block is the same.
He said to pull the flywheel and measure from crank flange surface to disc surface. Should be .970 or real close.
My crankshaft is also aftermarket Eagle internal balance stroker. Obviously the flange dimension shouldn’t change from stock but I guess we could have a tolerance stack up going on.

 

[Fastereddie]

I also measured all the stuff from my 465 setup. The clutch disc center hub is 1/16”
thinner. The input shaft/t.o. bearing snout
Is 1/2” shorter than the 4500. Plenty of clearance on that setup.

 

[Fastereddie]

What size clutch do you have...is it 12", 11", or 10"? Maybe the clutch you have is too big for the input shaft to fit the throw out bearing and clutch fingers.

That’s all good.

 

[imiceman44]

Yeah from what I found online and also what centerforce said the only difference is the crank mount/pattern. The face depth in relation to bellhousing/block is the same.
He said to pull the flywheel and measure from crank flange surface to disc surface. Should be .970 or real close.
My crankshaft is also aftermarket Eagle internal balance stroker. Obviously the flange dimension shouldn’t change from stock but I guess we could have a tolerance stack up going on.

The stroker crank must be one of the bigger variables everything else seems to be within the tolerance

 

[Fastereddie]

The stroker crank must be one of the bigger variables everything else seems to be within the tolerance

What gets me though, is it all worked fine with the 700r4 and the sm465. I think this clutch disc hub is bullshit

 

[Fastereddie]

I don’t like this plastic crap either.
Look at this shoulder - .125



This side is flat. I wonder if hub was built wrong?

 

[Fastereddie]

Alright, here’s the difference. Setting the flywheel side of the disc at 4-5/8”. That’s my dimension from flywheel face to transmission face. The first two pics is the new disc and you can see it’s right against the t.o. sleeve.
The second pics are my old disc. Looks like I’m gonna run my 465 disc. Worth a try right?

 

[ZooMad75]

You don’t have anything to loose other than having to pull it apart if it didn’t work. But I don’t know why it wouldn’t work. It’s a centerforce disc right?

 

[Truckman4life]

Could you trim the throw out bearing or would that cause other issues?

 

[imiceman44]

Alright, here’s the difference. Setting the flywheel side of the disc at 4-5/8”. That’s my dimension from flywheel face to transmission face. The first two pics is the new disc and you can see it’s right against the t.o. sleeve.
The second pics are my old disc. Looks like I’m gonna run my 465 disc. Worth a try right?
View attachment 440909View attachment 440910View attachment 440911View attachment 440912

So you did change that disc when you put the nv4500.
Is that old disc still in good shape?
I would run it.

 

[Fastereddie]

You don’t have anything to loose other than having to pull it apart if it didn’t work. But I don’t know why it wouldn’t work. It’s a centerforce disc right?

Yep centerforce dual friction just like the new one.

Could you trim the throw out bearing or would that cause other issues?

I looked at that as an option. I can take a 1/16” off it.

So you did change that disc when you put the nv4500.
Is that old disc still in good shape?
I would run it.

Yeah, this year of nv4500 has the internal slave/throw out combo that requires a different clutch than the older fork style.

 

[Fastereddie]

I took the new disc across the street and milled off the 1/8” ridge. Was going to clamp it in the pressure plate to measure the stack up and one of the damn bolts seized up and end up having to break it off in the flywheel. So now the flywheel is off on the bench so I can drill that out.

 

[Truckman4life]

Sucks about the bolt.

 

[Fastereddie]

Sucks about the bolt.

Yeah right? If it ain’t one thing it’s another.