Seems to me that clutch loading pushes the crank forward and therefor
the front washer[s] take the force. If the main cap were misaligned
rearward, the block journal half of the thrust washer would take all
the load. If the misalignment was slight, with clutch in, the rear
washer would still have clearance - not load... Or what am I missing?
Just went and re-inspected and mic'd it. Wear is actually minimal - .
001"-.002" depending where I measure as compared with the other 3
halves. The failure area is not consistent around the radius but
rather "pock marks" in 3 distinct areas there the next layer of
material is exposed. Going back to my theory above, if the crank had .
004" thrust clearance and the main cap was .002" out of alignment,
the rear would not come into contact until that .002" was worn off.
I'm now starting to put 2+2+2 together and including my pressure
plate failure [explosion?] into the equation. That incident [race
before last] is why, in addition to general freshening, I've got the
crank out to be crack checked. Now seems likely that the violence
from the clutch cover coming apart [it destroyed the bellhousing]
perhaps combined with the misalignment of a less than robust part
added up to what I found.
Thoughts? Comments? Please?
Greg "Lunker" Hilyer
TR4 #314
Albuquerque NM
On Mar 9, 2008, at 5:17 PM, Randall wrote:
>> Makes perfect sense.
>
> Not to me ... can someone explain what I'm obviously not seeing :
> how the
> load on the front washer can be more than the load on the rear
> washer ? Cap
> misaligned means not enough clearance, that's obvious. But the
> lower rear
> washer would be just as tight as the upper front washer, plus it
> would carry
> the load from the clutch.
>
> Randall
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