Low compression on No2 - Suzuki GSX-R Motorcycle Forums Gixxer.com
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post #1 of 2 (permalink) Old 07-05-2016, 07:48 PM Thread Starter
Track Day Winner
Join Date: Nov 2015
Location: Queensland, Australia
Motorcycle: 1990 Gsxr750 , 1989 gsxr750, XV750 cafe racer
Posts: 66
Low compression on No2

Hi everyone. Normally on the oiler section but picked up a 92 model on the weekend. Got it cheap. Got it going and starting well. Blowing clouds of White smoke which I am pretty sure is vapour from sitting in the open for 6 months. Pipe baffle material is damp I think. It is getting better after lots of start ups and idling.
Finally moved onto compression today and 1, 3 and 4 are holding 130-135 PSI but no2 is down to 110. Put a teaspoon of oil in and she goes straight up to 130.
Indicating Rings. It has done 90KM's so pretty high.
My question is whether she is worth a rebuild or should I just part the old Girl out. In Australia the water cooled models are not pulling great money.
I have my 89 and 90 model done so I don't need a rider but was after a small project and a quick turnaround.
Thoughts would be appreciated!
Gsxrpig is offline  
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post #2 of 2 (permalink) Old 07-06-2016, 06:21 AM
Provisional Novice
Join Date: Feb 2016
Location: Southern Maryland
Motorcycle: 96 1100
Posts: 217
Re: Low compression on No2

Well I guess that depends on how much you paid for it and if you need to get out from under it. Is it a 600 or 750? If its been sitting a long time it might just need some running an lubrication to allow the rings to re-seat. Could just be some out of spec valves too. All depends on how much time your willing to invest.
RaiderGT is offline  
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