[Fot] CR

[Bob Bownes -Seiri]

I went to 12:1 in the tr6 and can't keep lands in between rings, so I'm
falling back to around 10:1.

Kas ran @ 12:1 with much better success. But my engines need to last longer.
:)



On Jul 20, 2011, at 15:09, Mike Munson <fasttrs at yahoo.com> wrote:

> I had one TR6 engine with .040 over cast pistons that I  ran at 14:1. The
only
> time I had problems was when someone put too lean a main jet in and I burned
a
> whole in number 5. I cut down the mosquito population that day at Road
> Atlanta. I wear glasses now!
>
> Mike
>
> From: marty sukey <trmarty at hotmail.com>
> To: FOT <fot at autox.team.net>
> Sent: Wednesday, July 20, 2011 10:14 AM
> Subject:
> [Fot] CR
>
> What is the collective wisdom of the FOT masses as to how high of a
> CR can be
> run on cast pistons? This would be Spitfire FWIW.  I am at 10.8:1,
> intentionally kept it low because of the cast pistons.  I have had a
> discussion with an engine builder telling me I can go much higher.  I am
> contemplating bumping up to 12:1.  Before I blow something up I thought I
> would toss it out for discussion. What say ye?
>
> Thanks,
> Marty (one race in and
> I already want to go faster) :)
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