Curtis O: the scenario fo getting a clunk after changing from reverse
strongly suggests that your U-joints are worn. That's the most likely.
It's possible that the diff has a clunk from a worn crown or spider gear,
but less likely.
Also check that the spring mountings and bushing in the rear end are
tight and sound.
See if the clunk has a rythmn and if it varies with road speed or with
engine speed. Or is it a vibrational (after a rough patch or road) thing.
Really, with it happening after going from Reverse to forward (and vice
versa I assume) it's 95% that it's U-joints.
My spitfire eats U-joints for breakfast and trunnions for supper.
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Dirk,
The dist. is held in by being dropped into place and then bolted down
with two bolts as a rule. The pinch clamp is only a timing thing.
Some dizzies bolt to the block and some have an extension that rises them
up (like a 100-6 Healey for eg)
Is there not an "ear" on either side of the dist. base with a hole in each
that matches the receiving area of the block?
As far has the dist. turning after being tightened you could shim it up
with something to make the hole in the pinch clamp smaller so the it will
grab the dist. before the bolt is tightened all the way.
With the dist. bouncing up and down like that you could not olny chew up
the drive you could (if it's not off set) end up with the timing out by
180 degrees. That'll make for a smooth idle!
--------------
Chris Ball
triumph@io.org
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