[Fot] 89MM piston question

[Bob Kramer]

I've always used 87 MM due to the rules but everybody else seems to be
using 89. The procedures are the same so It'll be the same. I blew a head
gasket last time out, compression into the cooling system and blew off the
bottom hose. I guess it wasn't tight enough, and scuffed two pistons
before I could shut it down.

Bob Kramer

On Fri, Aug 31, 2018 at 12:43 PM, <van.mulders.marcel at telenet.be> wrote:

> Bob,
> It is definitely necessary to make that modification to the liners. The
> relieve should correspond to the shape of the combustion chambers : about 4
> mm wide on a 89mm engine.
> Marcel
>
> ------------------------------
> *Van: *"fot" <fot at autox.team.net>
> *Cc: *"fot" <fot at autox.team.net>
> *Verzonden: *Donderdag 30 augustus 2018 00:05:43
> *Onderwerp: *[Fot] 89MM piston question
>
> Do the guys running the 89MM pistons and liners need to relieve the liners
> to clear the intake valve, or does the extra MM make the difference?
>
> Bob Kramer
>
> On Tue,
>
> _______________________________________________
> fot at autox.team.net
>
> http://www.fot-racing.com
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/pipermail/fot
> Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/van.mulders.
> marcel at telenet.be
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/fot/attachments/20180831/fb19eccd/attachment-0001.htm>