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Scooters - 50cc
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Super 9
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Low compresion Super9s
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Topic: Low compresion Super9s (Read 1538 times)
yogi
Newbie
Posts: 25
Low compresion Super9s
«
on:
September 21, 2009, 06:48:36 PM »
Hi guys just wondering what the compression should be on the Aircooled super 9, Ive carried out a compresion test and it's only reading about 80 psi at WOT spun over about 10 times......Any help appreciated
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OldGuy
Full Member
Posts: 188
Re: Low compresion Super9s
«
Reply #1 on:
September 21, 2009, 11:44:12 PM »
To take an accurate compression test the motor needs to be fully warm and the throttle fully open. Cold and/or the throttle closed will cause low readings.
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OldGuy
Wanna be GrandVista rider
Inside every old person is a young person wondering,
"What the heck happened?"
zombie
You never know do ya!
Hero Member
Posts: 13870
Close enough to get the idea!
Re: Low compresion Super9s
«
Reply #2 on:
September 23, 2009, 12:06:38 AM »
Should be right at 100. You may want to put in a set of rings. You can take the glaze off the cylinder w/ 600 grit emory paper, and a good oil. ONLY CUT in a circular motion around the inside. Never from top to bottom
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"They have nothing in their whole imperial arsenal that can break the spirit of one Irishman who doesn't want to be broken." Bobby Sands...
yogi
Newbie
Posts: 25
Re: Low compresion Super9s
«
Reply #3 on:
September 23, 2009, 06:06:10 PM »
Thanks for the replys guys, i'll check it again tomorow when it's warm .
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