<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:13px"><div id="yui_3_16_0_ym19_1_1533073388938_24345" dir="ltr">.035 is fine with the stock gasket.</div> <div class="qtdSeparateBR"><br><br></div><div class="yahoo_quoted" style="display: block;"> <div style="font-family: Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 13px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"><font size="2" face="Arial"> On Monday, July 30, 2018 6:08 PM, John H. Hasty via Fot <fot@autox.team.net> wrote:<br></font></div> <br><br> <div class="y_msg_container"><div id="yiv9677090063"><div>
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
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<div id="yiv9677090063AppleMailSignature">Sent from my iPhone</div>
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On Jul 30, 2018, at 4:56 PM, fubog1 via Fot <<a rel="nofollow" shape="rect" ymailto="mailto:fot@autox.team.net" target="_blank" href="mailto:fot@autox.team.net">fot@autox.team.net</a>> wrote:<br clear="none">
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</font><div><font size="2">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.</font></div>
<div><font size="2">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.<br clear="none">
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<div><font size="2">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.</font></div>
<div><font size="2">Glen</font><br clear="none">
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<div style="font-family:arial, helvetica;font-size:10pt;color:black;">-----Original Message-----<br clear="none">
From: don--- via Fot <<a rel="nofollow" shape="rect" ymailto="mailto:fot@autox.team.net" target="_blank" href="mailto:fot@autox.team.net">fot@autox.team.net</a>><br clear="none">
To: fot <<a rel="nofollow" shape="rect" ymailto="mailto:fot@autox.team.net" target="_blank" href="mailto:fot@autox.team.net">fot@autox.team.net</a>><br clear="none">
Sent: Sun, Jul 29, 2018 7:27 pm<br clear="none">
Subject: [Fot] quench clearance<br clear="none">
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Amici,
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<div>Building a small journal 1296cc Spitfire.</div>
<div>Running Venolia’s over Carrillos</div>
<div>been know to go to 8500K rpm (occasionally).</div>
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<div>Going to have the block/pistons decked to zero. (can someone tell me a better way to say this?)</div>
<div>Anyway, I realized that my quench clearance would be the crush thickness of the head gasket.</div>
<div>.035 ~.0385</div>
<div>In the Comp Prep manual it states .025 as plenty of gap. </div>
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<div>Just want to see what y’all say.</div>
<div>Thanks, </div>
<div>Don</div>
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DON COUCH PHOTOGRAPHY<br clear="none">
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(512)-680-3540</div>
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