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Author Topic: any way to test for big bore  (Read 1044 times)

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Offline Milunchbox12

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any way to test for big bore
« on: January 19, 2015, 08:35:46 PM »
Owner says its got a big bore, is there any way to know with out pulling head?
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Offline Don R

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Re: any way to test for big bore
« Reply #1 on: January 19, 2015, 09:01:33 PM »
Been there, At one time I think they all were 836. If you know the piston tops apart you can peek into the plug hole with a borescope or a tiny light. I had one that was an 836, 900 or 936 depending on how many beers the guy had. After I got it I took it apart for gaskets and it was stone stock. It's an 836 now. really. no kidding.
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Offline 754

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Re: any way to test for big bore
« Reply #2 on: January 19, 2015, 10:57:09 PM »
I bought a 900 that was really an 836...
 Stick a small light in the plug hole or a borescope.  You can usually see if it has a high dome, big valve cutouts, or bigger squishband. ...plus you could cc it..
 Its a used motor, pay accordingly.
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Offline Medyo Bastos

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Re: any way to test for big bore
« Reply #3 on: January 20, 2015, 04:10:28 PM »
most all i see listed for sale have an 836  :D
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