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gs550 leaking oring base gasket

Thread starter cornishgs
Start date Aug 17, 2016

cornishgs

Forum Apprentice

Aug 17, 2016

Hi all,have got major oil leak on gs550 coming from base gasket oring area on lh side just above starter motor so will have to pull cylinders and head to replace.

tried re torqing head bolts didn't help matters .

rebuilt engine 2000 miles ago rebore 1mm oversize pistons,compression tested and compression hot throttle wide open has always been

1 130
2 125
3 130
4 135

bike goes well but have not got more than 95mph out of it. all valves are good and adjusted. no brakes aren't sticking!

so whilst I,m in there any suggestions for checking bores pistons rings ?? ps I did fit new non Suzuki piston rings also wondering if cylinders were bored to big cant find what max cylinder to piston clearance should be .

Last edited: Aug 17, 2016

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