On Jun 14, 4:44am, Tony Robinson wrote:
> For auto-x, you probably will want higher compression pistons.
SNIP
> By milling the head and block and going to a hi-comp steel head gasket,
> you should be able to run 9.5/1 pistons without any trouble. This kind of
> head work will usually allow you to run as high as 13.1 pistons, if you
> can find them.
SNIP
> Good luck on the beefing up job.
Be very careful about this. Depending on what class you want
to end up in for auto-Xing purposes, some or all of this may
be illegal. In stock class, for example, you can't do any
internal engine work, no high compression pistons, no head
milling, etc. For Street Prepared, there's also little or
no internal engine work allowed, also. So, if you do put
the high compression pistons in, and mill the head, you're
going to end up in either Prepared or Modified, which are
both slick-tired classes and can get expensive very quickly.
Of course, these are SCCA rules that I'm talking about here,
some local clubs may be different, but since the SCCA is the
big guy in town, most clubs, at least model their rules on
the SCCA ones.
cheers,
John Lye
rjl6n@uva.pcmail.Virginia.EDU
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