On Thu, 26 Oct 1995 lesnyd@bb1t.monsanto.com wrote:
> I confess, I'm new at this stuff. I believe the ring on piston #3 on my
> Spit Mk3 broke, since compression is good on the other cylinders, and all
> of a sudden I started getting lots of blowby. I redid the head, but
> it didn't help (try easy stuff first - rarely works, though)....
>
> My question is this - how do I know if the pistons are STD or not, and
> how do I determine of the big end bearings are STD or not? I DO have the
> bore dimensions from the VB catalog, but they don't list the crank
> diameters. Would that by in my Haynes manual?
>
> So, do I mic the crank and get its diameter and compare that to the book?
> Same for the bore?
Yeah, that would work. And yes, the various manuals should give
diameters and other spec's. Note, too, that the bearing shells and (in
some, but not all, cases) pistons should be marked with both part number
and size.
BTW, sounds like your diagnosis is correct. That's exactly what happened
to Rik's and my Spitfire 4 racecar motor, and that engine is in the
process of getting the exact treatment you outlined.
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Andrew Mace e-mail: amace@unix2.nysed.gov *
* NYS Library phone: (518) 474-8541 (voice) *
* 10D36 CEC, Albany, NY 12230 (518) 486-2152 (fax) *
* *
* *
* "I was wonderin' why we live so much longer'n our imaginations!" *
* -- Broom Hilda *
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
|