Marks story sounds like a carbon copy of mine.
I picked up the 72 Spit as a basket case in Salt Lake a few years ago.
It came in boxes of parts with little explanation of what origin or
years they were from.
This car has not run or raced since the late 70's so I don't have the
experience if it worked with or without the aluminum bell housing.
As Marks car this is a Mark 4 1300, full synchro 3 rail but with an
aluminum flywheel stock disc and pressure plate.
I too pulled out the slave and I'm getting travel from the piston and
the clutch master has ~ 1 inch of stroke.
I think the aluminum flywheel is the late version but I can't say for
sure since I only have cast iron late and early flywheels to compare it to.
They seem to be similar if not the same.
The aluminum bell housing came with the rest of the parts and was
notched for header clearance so I'm assuming all the parts worked
together at some point in time.
Ted Schumacher mentioned that the aluminum bell housing uses a different
release bearing sleeve. Does anyone know how to tell the difference??
Thanks in advance
Glenn Franco
72 Spit Race Car working out the problems in Michigan
Mark J Bradakis wrote:
> I, too, have been having clutch issues with my clapped out street
> squaretail.
> It has a Mark 4 1300, a full synchro 3 rail, stock flywheel and
> clutch. This
> car is basically cobbled together from who knows what.
>
> After the used clutch disk I put in fell apart ( I know, I know ) I
> put in
> new stuff. I was not getting full release so I pulled off the slave and
> measured a few distances. I came up with figures that showed the
> slave piston had to travel just over an inch before the throw out bearing
> would contact the diaphragm spring on the pressure plate. So I cobbled
> up a distance piece to take up the slack. I'm guessing it took up TOO
> much slack and overextended the diaphragm spring. The car started
> exhibiting clutch problems not many months later. The clutch would
> not fully release, and it wouldn't full grab. When we yanked it apart
> we found the diaphragm spring had broken into several pieces. So
> another set of new bits went in, the spacer came out. You know, the
> slave cylinder piston doesn't have to ALWAYS go all the way to
> the back of the cylinder.
>
> But now the Spit is doing the same no release, no grab stuff. Time to
> yank the tranny again to see what's going on. There may be some
> issues with the parts involved, the flywheel, bellhousing, gearbox
> not wanting to play together. Oh well.
>
> mjb.
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