.035 is fine with the stock gasket.
On Monday, July 30, 2018 6:08 PM, John H. Hasty via Fot <fot at
autox.team.net> wrote:
Not apples to apples, but just for info. We used a squash of .020, no gasket,
O ring, & turned 13 to 14 rpm with our 2 stroke 250cc motors. Cannot remember
the cc?s for the heads. But it took many, many hours with 400 wet paper, WD40 &
a surface plate to achieve the desired combo.
Sent from my iPhone
On Jul 30, 2018, at 4:56 PM, fubog1 via Fot <fot at autox.team.net> wrote:
If you have good race rods and all of the clearances are to spec, you could pop
it up a few thou but I wouldn't go any less than .030.Yes you can run it a
little tighter but that's the point where there won't be any carbon buildup on
top of the piston, and all it takes is a missed-shift to turn it into junk.
Considering that the gasket may compress a few thou, depending on what gasket
you're using, you'll likely be fine with 0-deck, as you're planning.Glen
-----Original Message-----
From: don--- via Fot <fot at autox.team.net>
To: fot <fot at autox.team.net>
Sent: Sun, Jul 29, 2018 7:27 pm
Subject: [Fot] quench clearance
Amici,?
Building a small journal 1296cc Spitfire.Running Venolia?s over Carrillosbeen
know to go to 8500K rpm (occasionally).
Going to have the block/pistons decked to zero. (can someone tell me a better
way to say this?)Anyway, I realized that my quench clearance would be the crush
thickness of the head gasket..035 ~.0385In the Comp Prep manual it states .025
as plenty of gap.?
Just want to see what y?all say.Thanks,?Don
DON COUCH PHOTOGRAPHY
www.dcphotos.com
(512)-680-3540
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