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Re: Senior max barell
Posted by 'Mark 71' on 25 Oct 2014 @ 10:19


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Mark 71
Joined: July 2007
Total Posts: 43
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Hi Brian,

Yep, I've done the full barrel mapping with gearbox karts - that was more to do with designing the exhaust though. As far as the crankcase, I just made sure it was perfectly aligned with transfer ports of the barrel which usually involved trimming the base gasket.

For Rotax, it's the seal that really restricts you having a look inside so obviously you can only put the piston at BDC and work above it, and then put on a timing wheel and work through the inlet port to map against the bottom of the piston skirt. But that's only on the old seal type and to be honest, I only mapped my two 04 barrels out of interest to see how much casting variation there was - both barrels were within a 1/10 on the track.

Message Thread:

Senior max barell  by 'Drew1960'   (22 Oct 2014 @ 20:35)
Re: Senior max barell  by 'deadfrogracing'   (24 Oct 2014 @ 10:35)
Re: Senior max barell  by 'BrianP'   (24 Oct 2014 @ 14:22)
Re: Senior max barell  by 'Drew1960'   (24 Oct 2014 @ 16:10)
Re: Senior max barell  by 'Mark 71'   (24 Oct 2014 @ 16:32)
Re: Senior max barell  by 'Drew1960'   (24 Oct 2014 @ 16:52)
Re: Senior max barell  by 'Matt97'   (24 Oct 2014 @ 17:34)
Re: Senior max barell  by 'Drew1960'   (24 Oct 2014 @ 18:06)
Re: Senior max barell  by 'Matt97'   (24 Oct 2014 @ 19:19)
Re: Senior max barell  by 'BrianP'   (24 Oct 2014 @ 19:29)
Re: Senior max barell  by 'Drew1960'   (24 Oct 2014 @ 20:05)
Re: Senior max barrel  by 'BrianP'   (25 Oct 2014 @ 8:55)
Re: Senior max barrel  by 'Drew1960'   (25 Oct 2014 @ 9:31)
Re: Senior max barrel  by 'BrianP'   (25 Oct 2014 @ 10:09)
Re: Senior max barrel  by 'Mark 71'   (25 Oct 2014 @ 10:53)
Re: Senior max barell  by 'Mark 71'  << You are here!
Re: Senior max barell  by 'BrianP'   (25 Oct 2014 @ 10:32)
Re: Senior max barell  by 'Mark 71'   (25 Oct 2014 @ 10:56)
Re: Senior max barell  by 'Drew1960'   (25 Oct 2014 @ 11:52)
Re: Senior max barell  by 'BrianP'   (25 Oct 2014 @ 13:31)
Re: Senior max barell  by 'Drew1960'   (25 Oct 2014 @ 14:18)
Re: Senior max barell  by 'Mark 71'   (25 Oct 2014 @ 17:19)

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