Hi all,I'm helping a mate out with his RB20 kitted scoot,the problem is,it feels very low on compression.
I can almost spin the flywheel by hand with the plug in!
I can't say how many miles its done,but its been on the road for just over a year.
What I'm after is the maximum piston to bore clerance and the maximum ring gap so I can check the kit for excessive wear.
Thanks in advance...........Kev
RB20 problem
Its showing 6kg/cm on the compression tester,what should it be?
No idea,never done it before,so I've no max/min figure to work on!,I'll just strip it down and measure the clearances if I can get a max/min for them!
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Grumpy225
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- Main scooter: Gori200, rt195, ld150,rb20
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Typically you want to see at least 100psi just to make smoke.
On an RB20 I'd think it should be closer to 135psi or so depending on the head.
I bet a $1 you have a stuck top ring in the piston. :d
On an RB20 I'd think it should be closer to 135psi or so depending on the head.
I bet a $1 you have a stuck top ring in the piston. :d
My thoughts exactly,I'll be in it tomorrow, hopefully a gummed in ring or two!
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sydduckett
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Id be hoping jts an air leak and not a stuck piston.......kevspeed wrote:My thoughts exactly,I'll be in it tomorrow, hopefully a gummed in ring or two!
Either or,as long as the bore isn't damaged 