off topic slightly but....

my dad uses a yamaha two stroke engine for fishing out at sea and the big-end shell has failed on it..

so he is looking for someone local to him ( Northumberland ) that can split a crank shaft, replace the bearings, then put back together. He would be supplying the parts


U2U me any phone numbers of people that may help.

TIA Alan

[Edited on 6/10/12 by tompat3463]

[Edited on 6/10/12 by tompat3463]

Has it really got shell bearings?

Two strokes normally have roller bearing big ends. It's a fairly precision job as the crank has to be pressed back together absolutely straight which involves much use of V blocks, DTI and a copper hammer.

Stan Stephens is the god of two strokes and offer a crank rebuilding service.

I had 2 cranks rebuilt by stan stepens 10-15 years ago. From memory it was a case of put it the post with 50 quid on monday and it returned by courier on fri.

http://www.sep-kegworth.co.uk/page1.htm

Armstrongs on Westgate hill in Newcastle did a couple of jetski cranks for me about 7-8 years ago . You'll probably need a new crank pin as well as a bearing. Did a few two stroke bike cranks myself years ago when I had access to decent presses.