The workshop manual for the 29D, 29E, 29F & 29K engines indicate a maximum
4th oversize piston of 0.040" (1.016 mm).
Based on a standard bore of 83.34 mm and a stroke of 88.90 mm, the plus
1.016 mm oversize piston will give a total engine displacement of 2982.75
cc.
Errors & Omissions excluded.
Peter Hunt
----- Original Message -----
From: "PG" <britishcars@shaw.ca>
To: <healeys@autox.team.net>
Sent: Thursday, November 09, 2006 5:05 AM
Subject: Cylinder Bore
> I reviewed the archives for this question but could not find a definitive
> answer.
>
> Does anybody know the maximum over-bore that a 2.9 litre Healey engine can
> take.
>
> A thread in the archives alluded to +60 thousandths but there was no
> definitive conclusion.
>
> Also, Does anybody know the related displacement change by the resulting
> increase in the bore?
>
> Thanks
>
> Paul
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