my new clutch slips!

[tubman]

"Hoop", I do remember that when I measured the height of the fingers from the surface of the flywheel on the new clutch in my car, it varied by as much as .060" (that may not sound like much, but it's damn near 1/16"). I spent a bunch of time shimming the fingers so they all came out within .007 of each other. Granted, that was on my '51, but it's about the same as the earlier cars, except for the size of the hub on the pressure plate.

I gotta believe it's something like that.

[swanwaco32]

I tried a 9" from Ft Wayne and it slipped as soon as I went into 2nd gear. It was on a 59A with merc crank. Had to go to a 10" and works great. Need to check clearance of
flywheel bolts to the springs on the clutch disc. I have taken the clutch apart after barely worn and they were hitting the bolt heads. Went to ARP Bolts with a lower head.

[cas3]

well thats interesting. if i have to change anything i will go to a 10" as my tired old knees would not like stiffer springs on the 9"

[John R]

Who here knows of a good GM style 10.5" clutch manufacturer that is KNOWN to correctly work with our big, fat and flat throw-out bearings???[/QUOTE]


This is the $64 question. I'm patiently waiting and hoping to see a response.
John

[JSeery]

Originally Posted by cas3

well thats interesting. if i have to change anything i will go to a 10" as my tired old knees would not like stiffer springs on the 9"

Keep in mind that the 10 inch pressure plate spring pressure is greater than the 9 inch pressure plates. Sometimes to stiffen up the 9 inch plates 10 inch springs are used.

[cas3]

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good info Jerry, thanks for that

[David J]

Never looked into it but a slightly longer throwout arm would make a big difference on pedal pressure .

Originally Posted by cas3

well thats interesting. if i have to change anything i will go to a 10" as my tired old knees would not like stiffer springs on the 9"