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Discussion Starter · #1 ·
So I was doing a search to get clarification on an issue I was having with my 58' pre unit triumph. Since I needed to pull off the belt drive(dry clutch) to replace the transmission seal, I wanted to replace the engine drive side as well and I found something I have never seen before. I cannot find any info whatsoever. Looked up all the available part numbers and there is no such part or number for what I found. I also found the the belt pulley on the crank was not fitting tight and was loose. I bought this off a guy who said he was a mechanic but... the belt drive was so tight, it caused a seal leak. Check out the pics. Have you seen this part before? Its splined/tapered and has an o ring. Automotive tire Automotive lighting Motor vehicle Finger Rim
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Discussion Starter · #6 ·
It was I think a crank seal from later unit engine (but had a metal outer) View attachment 274496
View attachment 274495
There’s a thread here somewhere I machined pulley to go inside
Interesting. Ill have to do more digging and post a better pic. The spacer in question is clever in design. tapered for a seal, splined to fit on the shaft and flat on the outside to keep that area dry. I am still curious as to what is it off off. Assuming its from another British bike. BSA?
 
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