[Healeys] clutch - Need Help please

[warthodson at aol.com]

Paul,
The dowel bolts I am referring to are bolts, not pins. There are two of them &
they go in the bell housing to engine back plate joint. If memory serves, they
go in the 5:00 & 11:00 positions when looking at the bell housing from the
rear looking forward. They precisely position the bell housing, thus the
transmission input shaft, into the rear of the crank shaft.
These bolts are special bolts will very tight clearances for the holes they go
into.
The pilot bushing compresses when it is installed. Therefore, the hole in the
pilot bushing must be specifically designed to take this compression into
account. If you eventually have to remove the transmission/housing (I hope you
don't have to do this again) carefully check the inside diameter of the pilot
bushing & the diameter of the input shaft. Obviously, you don't want an
interference fit. I don't know what the recommended clearance should be, but
someone on the list will! Don't just arbitrarily enlarge it.
A friend had this exact same problem. Everything checked out. We could not
find any explanation. For unrelated reasons, we had to remove the engine &
transmission. We never found the cause, but after engine repairs the problem
was gone. I wish I could be of more help.
Gary Hodson




-----Original Message-----
From: PG <britishcars at shaw.ca>
To: warthodson at aol.com; healeys at autox.team.net
Sent: Sun, Jul 18, 2010 10:49 am
Subject: RE: [Healeys] clutch - Need Help please!!



Hi Gary,

Thanks for the feedback.

1)       Donbt have any dowels on the bellhousingb&are you thinking about
the rear engine plate to the block?  If so, yes.   Also, the clutch worked
fine until the new spigot bearing and new throw out bearing;
2)      Spigot bearing came from Autofarm and looked fine.
3)      There were no other modifications with the exception of the new DW
competition throw out bearingb&.however, that is working fine.
4)      Yes, the spigot is recessed into the crankb&b&the same as the old
one.   It is flush with the flange on the crank.

I hear you about extra wear not making the problem go awayb&.it was a bit of
a bHail Maryb on my part.

Thanksb&.keep your comments coming.

Paul