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Thread Like Summary
gavin eisler, Hillbilly bike, mdodds, Mitch
Total Likes: 4
Original Post (Thread Starter)
#855087 07/31/2021 11:57 PM
by mdodds
mdodds
Hello people. I recently purchased a left/hand crankcase for my 71 lightning. Sight unseen off a longtime dealer. I got it vapour blasted and did a crankshaft -bearings, seals, timing bush ,due to a lobe on the camshaft grind the bearings. -Total rebuild . Anyway i fitted it into the frame and then noticed the part of the casting that covers the front final drive sprocket was gone! Very neatly done ,Looks like the rear chain must have smashed it in the past. BUM! I have the old case so i shall attempt to cut and epoxy the missing piece on. I really am not interested in finding a replacement and starting again.
Liked Replies
#855095 Aug 1st a 05:11 AM
by NickL
NickL
Use JB Weld, should be ok.
1 member likes this
#855214 Aug 2nd a 10:54 PM
by mdodds
mdodds
I tell you,it certainly made bolting up the rear engine plates and my 3 inch ally angle oil filter mount a lot easier.
1 member likes this
#855517 Aug 5th a 11:54 PM
by NickL
NickL
Originally Posted by Andy Higham
Am I reading this right, you bought a left crankcase and mated it to an un related right crankcase?
Un matched crankcases are not a good idea as you cannot guarantee the barrel flange, crank centre line and cam centre line will align perfectly


You couldn't be sure a matching pair were any better!
1 member likes this
#855388 Aug 4th a 02:49 PM
by Andy Higham
Andy Higham
Am I reading this right, you bought a left crankcase and mated it to an un related right crankcase?
Un matched crankcases are not a good idea as you cannot guarantee the barrel flange, crank centre line and cam centre line will align perfectly
1 member likes this
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