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Re: Large Overbors (was: re: Piston Set)

To: Bob Spidell <bspidell@comcast.net>
Subject: Re: Large Overbors (was: re: Piston Set)
From: Blue One Hundred <healey.nut@gmail.com>
Date: Tue, 8 Mar 2005 11:57:37 +0800
Bob -

I have 0.40 over and never have had a problem, even in overheating
situations.  Not 0.60 over... but not too far off.  FYI.... the 0.40
over was a standard works modification to take the car to just under
three liters for racing in class....

Cheers,

Alan

'53 BN1 '64 BJ8


On Mon, 7 Mar 2005 09:29:02 -0800, Bob Spidell <bspidell@comcast.net> wrote:
> re:
> 
> "Wall thickness at 0.060 and it was a little too thin for my comfort zone as
> I was a bit scared of overheating and of the cyls becoming barrel shape from 
>being
> so thin. "
> 
> I'd like to hear from anybody running 0.060 over pistons regarding any 
>problems
> (I'm considering them myself).  And, from the pros on the List, do you 
>recommend
> for or against running 0.060 over.
> 
> TIA,
> 
> bs
> ********************************************
> Bob Spidell         San Jose, CA        bspidell@comcast.net
> '67 Austin-Healey 3000             '56 Austin-Healey 100M
> ********************************************
> 
> Subject: RE: Piston Set
> 
> > Carlos, I bought a set (for my 3000 engine) as you described from
> > British Parts Northwest in Salem, Oregon a few years back.  Try them at
> > www.bpnorthwest.com.  However, I opted to sleeve the engine back to std.
> > bore.  I sent the 0.060 set back to them and they were happy to swap for
> > a std. bore set.  Nice guys here....  I checked the cyl. Wall thickness
> > at 0.060 and it was a little too thin for my comfort zone as I was a bit
> > scared of overheating and of the cyls becoming barrel shape from being
> > so thin.  Anyway, I am very happy with the sleeve job back to std. bore.
> > Lotsa Luck,
> > Jack




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