On Wed, 25 Nov 1998, Egil Kvaleberg wrote:
>
> On 25 Nov 1998, Aaron Johnson wrote:
>
> > since .0475 is the max over bore
>
> FWIW, it seems .060 overbore pistons was available from ST once upon a
> time, making .060 the max allowable overbore in many racing classes. That
> is the reason that forged pistons are usually available in +.060 only.
> Additionally, the standard gasket will fit.
>
> 2.7 litre territory can be reached by boring to 77 or even 78mm, in which
> case you'll need a purpose made copper gasket (no problem). Mazda 1300cc
> pistons is a popular choice here, although you can also have pistons built
> to order.
>
> Further increase is possible by increasing the stroke, but that is a very
> costly exercise since it requires a special crankshaft as well as special
> conrods.
>
> See http://www.kvaleberg.com/t_tune.html for more information.
>
> Egil
>
>
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