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haitim01
50cc nipper
Joined: 26 Aug 2008
Posts: 39
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 Posted: Wed Sep 03, 2008 9:30 pm Post subject: Banshee Compression Test |
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Hi Guys,
what would be a good/excellent result from a compression test of a banshee with a healthy engine?
I just want to know, because the bike shop is going to do one, and i want to know what is acceptable before they tell me what the result was incase they try a dodgy.
Cheers |
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Sponsor
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Quad
The Day Starts With OZATV !
Joined: 22 Oct 2006
Posts: 2773
Location: UP FRONT
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| Posted: Wed Sep 03, 2008 9:32 pm Post subject: |
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std bore 135psi new to ex
av, 125 is ok
110 is no good |
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4stroker
Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland
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| Posted: Thu Sep 04, 2008 7:06 am Post subject: |
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depends whats done to it.
you said its got a shaved head, which would bump up the compression.
you also said its ported, this could lower the compression shown on a guage.
but what darren said is a good guide. they should also be within 10% of each other. (left bore vs right bore)
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2002 SE Banshee |
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haitim01
50cc nipper
Joined: 26 Aug 2008
Posts: 39
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| Posted: Thu Sep 04, 2008 8:07 am Post subject: |
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| quad wrote: | std bore 135psi new to ex
av, 125 is ok
110 is no good |
what do you mean by "new to ex av"?
ok so if its below 110 psi, it a very tired engine? and not worth it? |
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4stroker
Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland
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| Posted: Thu Sep 04, 2008 9:04 am Post subject: |
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haha you are going to have to learn the darren language if you wanna hang around here mate!
what i think darrens tryin to say is, 135 psi is what they are new, stock standard.
average bike with 125 psi is still ok.
anything below 110 bad.
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2002 SE Banshee |
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4stroker
Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland
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| Posted: Thu Sep 04, 2008 9:08 am Post subject: |
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| haitim01 wrote: | | quad wrote: | std bore 135psi new to ex
av, 125 is ok
110 is no good |
what do you mean by "new to ex av"?
ok so if its below 110 psi, it a very tired engine? and not worth it? |
what do you mean, not worth it? are you doing this test before you buy it?
if so, if it comes up low on comp, just bargain the price down, buy it, and give it a fresh top end.
at the very least it will need a hone and rings - $150
at the most it will need a bore, pistons and rings - $400
they are rough prices and not including labour.
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2002 SE Banshee |
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