Lot's of things can ruin the front thrust washer, but one thing to
check for sure is residual pressure in the clutch hydraulics. a lot of
master cylinders are provided with a residual pressure valve in place--
you have to take them out if you're going to use them for the clutch.
easy to determine if you have one--pump the clutch a few times,
release and then open the bleeder. if it squirts, that's your culprit.
Not only can it toast your thrust bearings, it's also very hard on the
clutch and throughout bearing.
On Mar 9, 2008, at 10:45 PM, Randall wrote:
>> also...hard braking in a race moves the crank forward
>
> I agree.
>
> But unless I'm being stupider than usual, that would bring the rear
> flank of
> the center main journal up against the _rear_ thrust washer(s);
> transferring
> all the clearance to the front thrust washers. Right ?
>
> However it's hard to say what a clutch explosion might do ...
> certainly if
> something got wedged between the flywheel and block, it would force
> the
> crank to the rear, possibly hard enough to ruin the front thrust
> washer.
>
> Randall
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Bill Babcock
Babcock & Jenkins
Billb@bnj.com
503.936.7660
www.bnj.com
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