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stepped flywheel on an 80 hp engine, is this OK to do?
Posted by: studevair ()
Date: July 07, 2019 08:04PM

I have the power pack out of my 62 Greenbrier replacing the crank seal and I noticed my engine has a stepped flywheel and HD pressure plate (part number 3824047) , the engine is a 80 hp car engine and the differential and transmission are a 64 4 speed. The van has been off the road since 1976,I did drive it a little just to make sure the engine was OK before I pulled the power pack and know that the clutch works OK but I just wanted to make sure there wasn't a problem using a stepped flywheel on an early engine.

,
Patrick P.
Niagara Falls NY

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Re: stepped flywheel on an 80 hp engine, is this OK to do?
Posted by: 63turbo ()
Date: July 07, 2019 08:54PM

Theres's no problem, provided you use all the correct matching parts. Theres a section in Clarks catalogue that shows whats needed when changing over. I cant remember the pieces that are affected, but I use the later flywheel and pressure plate on my car.

------------------------------------

Kevin Nash
Friday Harbor Washington
63 Spyder, Daily driver, EFI read about my project here: [corvaircenter.com]
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Re: stepped flywheel on an 80 hp engine, is this OK to do?
Posted by: Frank DuVal ()
Date: July 08, 2019 07:05AM

Clutch disc is same for both flywheels.

Things that have to be in the same set:

Throw out bearing
Clutch fork pivot stud
Pressure plate
Flywheel

Frank DuVal

Fredericksburg, VA

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Re: stepped flywheel on an 80 hp engine, is this OK to do?
Posted by: studevair ()
Date: July 08, 2019 08:01AM

Thanks guys, just wanted to confirm this was OK, I have found a lot of stuff on the van that was screwed up from when it was put together years ago , the one thing I did find when I pulled the tranny was the throw out bearing anti rattle clips were behind the end of the bearing instead of in the groove.

,
Patrick P.
Niagara Falls NY

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Re: stepped flywheel on an 80 hp engine, is this OK to do?
Posted by: Spectre ()
Date: July 08, 2019 08:03AM

Clark's catalog says that the late flywheel/pressure plate is fine for the EM if you use the late throwout bearing and the late clutch fork pivot stud.

David Clamp


1965 Corsa convertible - 140 4spd/3.55/AM-FM

2013 Mustang GT convertible - 5.0, 6spd auto, Procharger i-1

2003 Miata SE - 6spd manual (wife's toy)

"Victory is mine!" - SG

Norman, OK

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Re: stepped flywheel on an 80 hp engine, is this OK to do?
Posted by: Frank DuVal ()
Date: July 08, 2019 10:33AM

Quote
Patrick
throw out bearing anti rattle clips were behind the end of the bearing instead of in the groove.

So, you took apart something I put together 40+ years ago?confused smiley

I used to do it that way, as the first clutch I took apart seemed to be assembled that way. So, for the next several years all of them got assembled that way. Never an issue that I knew of. Not just Corvairs, full sized GM, etc.eye rolling smiley embarrassed emoji.

Frank DuVal

Fredericksburg, VA

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Re: stepped flywheel on an 80 hp engine, is this OK to do?
Posted by: studevair ()
Date: July 08, 2019 10:55AM

smiling smiley

,
Patrick P.
Niagara Falls NY

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Re: stepped flywheel on an 80 hp engine, is this OK to do?
Posted by: joelsplace ()
Date: July 10, 2019 12:31PM

You must have all the right parts if the clutch worked ok.
The wrong pressure plate would make it slip and the other parts would keep you from adjusting it to where it would work.

Joel
Northlake, TX
5 Ultravans, Lost count at 100 Corvairs...

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