<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">I’ve been waiting to thank all those that responded to my initial question until the topic died down but in the interim I’ve bought a set of 89’s from BPNW and I will set them up the same way I’ve always done it with 87’s, which is the way Kas lined out in the comp manual. I was hoping to hear that the silly MM was enough to avoid the need and gain a little more gasket surface on the liner, but what worked on The 87’s will work on the 89’s. I don’t expect to gain much as I expect they will be heavier than what I’ve been using, but they cost a bunch less. In time I’ll know. So thanks for the answers and lively discussion!<div>Bob <br><br><div id="AppleMailSignature">Sent from my iPhone</div><div><br>On Sep 2, 2018, at 10:46 PM, Bill via Fot <<a href="mailto:fot@autox.team.net">fot@autox.team.net</a>> wrote:<br><br></div><blockquote type="cite"><div><meta http-equiv="Content-Type" content="text/html; charset=us-ascii">It always puzzles me when people say that. Horsepower is torque times RPM (and a conversion factor). Torque is horsepower/RPM. So how can one count more than the other? <br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Sep 2, 2018, at 4:13 PM, Mordy Dunst via Fot <<a href="mailto:fot@autox.team.net" class="">fot@autox.team.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">Its the torque that counts. So, I suspect the motor enhancements took the benefit of the tractor stroke. If the motor is able to produce that power at 6k rpm with shift at 6500. <div class="">I shift at @ 6200 - my motor produces max power @5800 on the dyno. I use a kastner designed cam for which I have the masters. </div><div class=""><br class=""></div><div class=""> <br class=""><div class=""><br class=""><div id="__aol_mail_signature__" class="">MDunst
<a dir="ltr" href="http://headgasket.com/" x-apple-data-detectors="true" x-apple-data-detectors-type="link" x-apple-data-detectors-result="0" class="">Headgasket.com</a>
<a dir="ltr" href="tel:626.358.1616" x-apple-data-detectors="true" x-apple-data-detectors-type="telephone" x-apple-data-detectors-result="1" class="">626.358.1616</a> <div class="">Fax <a dir="ltr" href="tel:626.628.3777" x-apple-data-detectors="true" x-apple-data-detectors-type="telephone" x-apple-data-detectors-result="2" class="">626.628.3777</a> </div><div class="">Triple R Munitions, Inc
<a dir="ltr" href="tel:626.201.9471" x-apple-data-detectors="true" x-apple-data-detectors-type="telephone" x-apple-data-detectors-result="3" class="">626.201.9471</a> </div><div class="">T
FFL 6,7 SOT 2</div></div>
<br class=""><div class="aolmail_replyHeader">
On Sunday, September 2, 2018, John Styduhar via Fot <<a dir="ltr" href="mailto:fot@autox.team.net" x-apple-data-detectors="true" x-apple-data-detectors-type="link" x-apple-data-detectors-result="4" class="">fot@autox.team.net</a>> wrote:
</div><br class="">
<blockquote style="margin:0 0 0 9px;padding:0 0 0 9px;" class="">
<div id="AOLMsgPart_1.2_6f74e8be-4e7c-4103-89ed-2529f44cfade" class="">
<div class="aolReplacedBody"><div dir="ltr" class=""><div class="gmail_default" style="font-size:small">What kind of modifications were done to the engine to extract over 200 HP from a tractor engine? Nitrous shot.</div><div class="gmail_default" style="font-size:small"><br class=""></div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="">On Sat, Sep 1, 2018 at 3:05 PM Thomas Boyd <<a href="mailto:tom@trenterprises.com" target="_blank" class="">tom@trenterprises.com</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto" class=""><div class="">All of our FIA race cars are running legal 87mm engines.</div><div id="m_8321584711312764493AppleMailSignature" class="">Just rolling roaded the latest SLR build at well north of 200bhp<br class=""><br class="">Thomas Boyd<div class="">Director</div><div class="">TR Enterprises</div><div class=""><a dir="ltr" href="tel:01623%20793807;302" x-apple-data-detectors="true" x-apple-data-detectors-type="telephone" x-apple-data-detectors-result="6" class="">01623 793807 (ext 302)</a></div><div class=""><a href="http://www.trenterprises.com/" target="_blank" class="">www.trenterprises.com</a></div><div class=""><br class=""></div></div><div class=""><br class="">On 1 Sep 2018, at 17:02, John Styduhar via Fot <<a href="mailto:fot@autox.team.net" target="_blank" class="">fot@autox.team.net</a>> wrote:<br class=""><br class=""></div><blockquote class=""><div class=""><div dir="ltr" class=""><div class="gmail_default" style="font-size:small">If you really had serious compliance with most group's rules, I would guess half the TR cars would not pass muster. Let's have fun together. </div><div class="gmail_default" style="font-size:small"><br class=""></div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="">On Sat, Sep 1, 2018 at 9:40 AM Terry Stetler via Fot <<a href="mailto:fot@autox.team.net" target="_blank" class="">fot@autox.team.net</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="">
<div class="m_8321584711312764493m_8355303263618601104WordSection1"><p class="MsoNormal">Indeed there are Glen.</p><p class="MsoNormal"><u class=""></u> <u class=""></u></p><p class="MsoNormal">Sent from <a href="https://go.microsoft.com/fwlink/?LinkId=550986" target="_blank" class="">
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<div id="m_8321584711312764493m_8355303263618601104divRplyFwdMsg" dir="ltr" class=""><font face="Calibri, sans-serif" style="font-size:11pt" class=""><b class="">
<div class="begin_alto_quote"></div>From:</b> Fot <<a href="mailto:fot-bounces@autox.team.net" target="_blank" class="">fot-bounces@autox.team.net</a>> on behalf of fubog1 via Fot <<a href="mailto:fot@autox.team.net" target="_blank" class="">fot@autox.team.net</a>><br class="">
<b class="">Sent:</b> Saturday, September 1, 2018 7:34:26 AM<br class="">
<b class="">To:</b> <a href="mailto:rkramer56@gmail.com" target="_blank" class="">rkramer56@gmail.com</a><br class="">
<b class="">Cc:</b> <a href="mailto:fot@autox.team.net" target="_blank" class="">fot@autox.team.net</a><br class="">
<b class="">Subject:</b> Re: [Fot] 89MM piston question</font>
<div class=""> </div>
</div>
<div class=""><font size="2" face="Arial, Helvetica, sans-serif" class="">
<div style="font-family: arial, helvetica; font-size: 10pt;" class="">
<div id="m_8321584711312764493m_8355303263618601104AOLMsgPart_2_9833cc70-880c-4ad8-a3c6-7dd354e849c9" class=""><font size="2" face="Arial, Helvetica, sans-serif" class="">
<blockquote style="border-left:2px solid blue;padding-left:3px" class="">everybody else seems to be using 89.<br class="">
</blockquote>
<div class="">
<div class=""><font size="2" class="">HaHa not everybody, rules say 87mm, there are still a few guys running them (and winning)...<br class="">
</font></div>
<div class=""><font size="2" class="">Glen <br class="">
</font></div>
<br class="">
</div>
<div class=""><br class="">
</div>
<div class=""><br class="">
</div>
<div style="font-family: arial, helvetica; font-size: 10pt;" class="">-----Original Message-----<br class="">
From: Bob Kramer via Fot <<a href="mailto:fot@autox.team.net" target="_blank" class="">fot@autox.team.net</a>><br class="">
To: van.mulders.marcel <<a href="mailto:van.mulders.marcel@telenet.be" target="_blank" class="">van.mulders.marcel@telenet.be</a>><br class="">
Cc: fot <<a href="mailto:fot@autox.team.net" target="_blank" class="">fot@autox.team.net</a>><br class="">
Sent: Fri, Aug 31, 2018 11:26 pm<br class="">
Subject: Re: [Fot] 89MM piston question<br class="">
<br class="">
<div id="m_8321584711312764493m_8355303263618601104AOLMsgPart_1.2_a86129b9-5eb9-4e6e-bc70-68cf0b670447" class="">
<div class="m_8321584711312764493m_8355303263618601104aolReplacedBody">
<div dir="ltr" class="">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. </div>
<div class="m_8321584711312764493m_8355303263618601104aolmail_gmail_extra"><br clear="all" class="">
<div class="">
<div class="m_8321584711312764493m_8355303263618601104aolmail_gmail_signature">
<div dir="ltr" class="">Bob Kramer</div>
</div>
</div>
<br class="">
<div class="m_8321584711312764493m_8355303263618601104aolmail_gmail_quote">On Fri, Aug 31, 2018 at 12:43 PM, <span dir="ltr" class="">
<<a rel="noopener noreferrer" href="mailto:van.mulders.marcel@telenet.be" target="_blank" class="">van.mulders.marcel@telenet.be</a>></span> wrote:<br class="">
<blockquote class="m_8321584711312764493m_8355303263618601104aolmail_gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div class="">
<div style="font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 10pt;" class="">
<div class="">Bob,</div>
<div class="">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.</div>
<div class="">Marcel</div>
<div class=""><br class="">
</div>
<hr id="m_8321584711312764493m_8355303263618601104aolmail_m_-391070137228553199zwchr" class="">
<div class=""><b class="">Van: </b>"fot" <<a rel="noopener noreferrer" href="mailto:fot@autox.team.net" target="_blank" class="">fot@autox.team.net</a>><br class="">
<b class="">Cc: </b>"fot" <<a rel="noopener noreferrer" href="mailto:fot@autox.team.net" target="_blank" class="">fot@autox.team.net</a>><br class="">
<b class="">Verzonden: </b>Donderdag 30 augustus 2018 00:05:43<br class="">
<b class="">Onderwerp: </b>[Fot] 89MM piston question<br class="">
</div>
<br class="">
<div class="">
<div dir="ltr" class="">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?<br class="">
<div class="m_8321584711312764493m_8355303263618601104aolmail_gmail_extra"><br clear="all" class="">
<div class="">
<div class="m_8321584711312764493m_8355303263618601104aolmail_m_-391070137228553199gmail_signature">
<div dir="ltr" class="">Bob Kramer</div>
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<div class="m_8321584711312764493m_8355303263618601104aolmail_gmail_quote">On Tue, </div>
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