<html><head></head><body><div style="font-family:times new roman, new york, times, serif;font-size:medium;"><div><div>Hi FOT</div><div><br></div><div>I've been following this string on flywheel bolts, washers and dowels all very interesting and valuable as I still consider myself a novice. I hope to be working on a spare motor over the winter so saving up these points.</div><div><br></div><div>Now the question RE flywheels... I rebuilt a GT6 motor a few years ago and put an aluminum flywheel in. Had the transmission out of the TR two years ago and lightened the steel flywheel, so I have one of both.</div><div><br></div><div>What's this comment about not using an aluminum flywheel based on / about?<br></div><div><br></div><div>Cheers and thanks for all the Kastner Cup stories and the Mosport update friends</div><div>Brian<br></div><div><br></div><div><div>26A GT6+, 28 TR6</div>Brian Schirano<br>585-305-0349 Cell <br>BSchirano@yahoo.com</div><div><br></div></div><div><br></div><div><br></div><hr><div id="ydp12dc43f2yahoo_quoted_8237882835" class="ydp12dc43f2yahoo_quoted"><div style="font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:13px;color:#26282a;"><div>On Thursday, June 22, 2017, 6:47:47 AM EDT, Steve Yott via Fot <fot@autox.team.net> wrote:</div><div><br></div><div><br></div><div><div id="ydp12dc43f2yiv4113756983"><div><div class="ydp12dc43f2yiv4113756983WordSection1"><p class="ydp12dc43f2yiv4113756983MsoNormal">Properly made and installed that would be an good solution. Issue is that if they are not sized properly and they should have a t-shape and be counter sunk they can cause even worse failure.</p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal">The right bolt used with the proper washer has a very large surface area and the bolt itself is shouldered resulting in a pretty strong install.</p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal">The next best thing to do IMHO is to install a second dowel pin. The real purpose of the bolt is to hold the flywheel onto the crank but the main strength is the counter sunk flywheel over the face of the crankshaft and the dowels holding the rotation forces. This way if the bolts should break you have two dowels which will prevent the flywheel from flying in an egg shape and destroying everything in its path.</p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal">Now the absolute best thing is to not use an aluminum flywheel! There is a reason they are not allowed in Europe….. Buy a steel flywheel and use 6 to 8 bolts then most of the issues are gone. </p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal">IMHO</p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal">Steve Yott</p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(225, 225, 225) currentcolor currentcolor; padding: 3pt 0in 0in;"><p class="ydp12dc43f2yiv4113756983MsoNormal"><b>From:</b> Scott Janzen [mailto:sjanzen@me.com] <br><b>Sent:</b> Monday, June 05, 2017 3:28 PM<br><b>To:</b> Barr, Scott <sbarr@McCarty-Law.com><br><b>Cc:</b> timmmurphh@gmail.com; Steve Yott <tr4@wi.rr.com>; STEPHEN BOROWSKI <biznzman@pacbell.net>; FOT <fot@autox.team.net><br><b>Subject:</b> Re: [Fot] TR4 ARP Flywheel Bolts Question</p></div></div><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><div><p class="ydp12dc43f2yiv4113756983MsoNormal">Don't you guys use steel inserts in those flywheel holes?<br><br>Sent from my iPhone<span style="font-size:12.0pt;"></span></p></div><div><p class="ydp12dc43f2yiv4113756983MsoNormal" style="margin-bottom:12.0pt;"><br>On Jun 5, 2017, at 7:55 AM, Barr, Scott via Fot <<a href="mailto:fot@autox.team.net" rel="nofollow" target="_blank">fot@autox.team.net</a>> wrote:</p></div><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt;"><div><p class="ydp12dc43f2yiv4113756983MsoNormal"><span style="color:#1F497D;">This is what it looks like if you forget to chamfer the flywheel holes to clear the radius under the head.</span> </p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal"><image001.jpg></p><p class="ydp12dc43f2yiv4113756983MsoNormal"><span style="color:#1F497D;"> </span></p><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(225, 225, 225) currentcolor currentcolor; padding: 3pt 0in 0in;"><p class="ydp12dc43f2yiv4113756983MsoNormal"><b>From:</b> Fot [<a href="mailto:fot-bounces@autox.team.net" rel="nofollow" target="_blank">mailto:fot-bounces@autox.team.net</a>] <b>On Behalf Of </b>timmmurphh--- via Fot<br><b>Sent:</b> Sunday, June 04, 2017 5:53 PM<br><b>To:</b> 'Steve Yott' <<a href="mailto:tr4@wi.rr.com" rel="nofollow" target="_blank">tr4@wi.rr.com</a>>; 'STEPHEN BOROWSKI' <<a href="mailto:biznzman@pacbell.net" rel="nofollow" target="_blank">biznzman@pacbell.net</a>>; <a href="mailto:fot@autox.team.net" rel="nofollow" target="_blank">fot@autox.team.net</a><br><b>Subject:</b> Re: [Fot] TR4 ARP Flywheel Bolts Question</p></div></div><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal">Thanks for the clarification Steve, that makes sense.</p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal">Tim</p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal"><a name="_MailEndCompose"> </a></p><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(225, 225, 225) currentcolor currentcolor; padding: 3pt 0in 0in;"><p class="ydp12dc43f2yiv4113756983MsoNormal"><b>From:</b> Steve Yott [<a href="mailto:tr4@wi.rr.com" rel="nofollow" target="_blank">mailto:tr4@wi.rr.com</a>] <br><b>Sent:</b> Sunday, June 4, 2017 4:56 PM<br><b>To:</b> <a href="mailto:timmmurphh@gmail.com" rel="nofollow" target="_blank">timmmurphh@gmail.com</a>; 'STEPHEN BOROWSKI' <<a href="mailto:biznzman@pacbell.net" rel="nofollow" target="_blank">biznzman@pacbell.net</a>><br><b>Subject:</b> RE: [Fot] TR4 ARP Flywheel Bolts Question</p></div></div><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal">The reason they state to not use washers is they are afraid that the washers used will (1) not be hard enough and will compress under the bolt head and (2) all ARP bolts have very liberal radii between the head and shank. If there is a tight fitting washer this would be strain on this radius and could break the head.</p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal">The 7/16” ARP bolts used on Chevy flywheels is what I fit to TR’6, late Spitfires and modified TR4 cranks. These bolts come with the special washers to use with them. I have used a proper washer under the 3/8” ARP bolts many times with no problems using a correct washer. You can also use an ARP crown wheel bolt for the same purpose and these come with proper washers.</p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal">Steve Yott </p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(225, 225, 225) currentcolor currentcolor; padding: 3pt 0in 0in;"><p class="ydp12dc43f2yiv4113756983MsoNormal"><b>From:</b> Fot [<a href="mailto:fot-bounces@autox.team.net" rel="nofollow" target="_blank">mailto:fot-bounces@autox.team.net</a>] <b>On Behalf Of </b>timmmurphh--- via Fot<br><b>Sent:</b> Sunday, June 04, 2017 1:59 PM<br><b>To:</b> 'STEPHEN BOROWSKI' <<a href="mailto:biznzman@pacbell.net" rel="nofollow" target="_blank">biznzman@pacbell.net</a>>; <a href="mailto:fot@autox.team.net" rel="nofollow" target="_blank">fot@autox.team.net</a><br><b>Subject:</b> Re: [Fot] TR4 ARP Flywheel Bolts Question</p></div></div><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal">FWIW</p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal">I just got a set of ARP 206-2802 flywheel bolts from Pegasus for the TR4. They are for “BMC A series”. The instruction specifically says, “DO NOT USE ANY WAHERS”, yes, all in caps for emphasis! They further state that ARP will not be responsible for failures is washers are used. The instructions also say, “Make sure there is an adequate chamfer under the bolt holes on the flywheel to clear the radius under the head of the bolt.” Torque is 55 Ft-Lb with specified lubricants on the threads.</p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal">I’ve never had that much good luck grinding the ends of bolts and still having it square so as not to start it cocked and runing the female threads. Maybe it’s just me<span style="font-family:"Segoe UI Emoji", sans-serif;">😊</span></p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal">Tim</p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(225, 225, 225) currentcolor currentcolor; padding: 3pt 0in 0in;"><p class="ydp12dc43f2yiv4113756983MsoNormal"><b>From:</b> Fot [<a href="mailto:fot-bounces@autox.team.net" rel="nofollow" target="_blank">mailto:fot-bounces@autox.team.net</a>] <b>On Behalf Of </b>STEPHEN BOROWSKI via Fot<br><b>Sent:</b> Friday, June 2, 2017 3:28 PM<br><b>To:</b> FOT List <<a href="mailto:fot@autox.team.net" rel="nofollow" target="_blank">fot@autox.team.net</a>><br><b>Subject:</b> [Fot] TR4 ARP Flywheel Bolts Question</p></div></div><p class="ydp12dc43f2yiv4113756983MsoNormal"> </p><div><div id="ydp12dc43f2yiv4113756983yui_3_16_0_ym19_1_1496435068370_3242"><p class="ydp12dc43f2yiv4113756983MsoNormal" style="background-color: white; background-image: none; background-repeat: repeat; background-attachment: scroll; background-size: auto auto;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">Does anyone have experience using the ARP flywheel bolts sold by Moss and others?</span></p></div><div id="ydp12dc43f2yiv4113756983yui_3_16_0_ym19_1_1496435068370_3241"><p class="ydp12dc43f2yiv4113756983MsoNormal" style="background-color: white; background-image: none; background-repeat: repeat; background-attachment: scroll; background-size: auto auto;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">I understand that you may have to shorten the bolt or it breaks the rear seal???</span></p></div><div id="ydp12dc43f2yiv4113756983yui_3_16_0_ym19_1_1496435068370_3257"><p class="ydp12dc43f2yiv4113756983MsoNormal" style="background-color: white; background-image: none; background-repeat: repeat; background-attachment: scroll; background-size: auto auto;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">Are they supposed to have a washer or not?</span></p></div><div id="ydp12dc43f2yiv4113756983yui_3_16_0_ym19_1_1496435068370_3239"><p class="ydp12dc43f2yiv4113756983MsoNormal" style="background-color: white; background-image: none; background-repeat: repeat; background-attachment: scroll; background-size: auto auto;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;"> </span></p></div><div id="ydp12dc43f2yiv4113756983yui_3_16_0_ym19_1_1496435068370_3240"><p class="ydp12dc43f2yiv4113756983MsoNormal" style="background-color: white; background-image: none; background-repeat: repeat; background-attachment: scroll; background-size: auto auto;"><span style="font-size:10.0pt;font-family:"Helvetica", sans-serif;color:black;">Thxs. Steve</span></p></div></div></div></blockquote><blockquote style="margin-top:5.0pt;margin-bottom:5.0pt;"><div><p class="ydp12dc43f2yiv4113756983MsoNormal" style="margin-bottom:12.0pt;"><span style="font-size:12.0pt;font-family:"Times New Roman", serif;">_______________________________________________<br><a href="mailto:fot@autox.team.net" rel="nofollow" target="_blank">fot@autox.team.net</a><br><br><a href="http://www.fot-racing.com" rel="nofollow" target="_blank">http://www.fot-racing.com</a><br><br>Donate: <a href="http://www.team.net/donate.html" rel="nofollow" target="_blank">http://www.team.net/donate.html</a><br>Archive: <a href="http://www.team.net/archive" rel="nofollow" target="_blank">http://www.team.net/archive</a><br>Forums: <a href="http://www.team.net/forums" rel="nofollow" target="_blank">http://www.team.net/forums</a><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/fot/sjanzen@me.com" rel="nofollow" target="_blank">http://autox.team.net/mailman/options/fot/sjanzen@me.com</a><br><br></span></p></div></blockquote></div></div></div>_______________________________________________<br><a href="mailto:fot@autox.team.net" rel="nofollow" target="_blank">fot@autox.team.net</a><br><br><a href="http://www.fot-racing.com" rel="nofollow" target="_blank">http://www.fot-racing.com</a><br><br>Donate: <a href="http://www.team.net/donate.html" rel="nofollow" target="_blank">http://www.team.net/donate.html</a><br>Archive: <a href="http://www.team.net/archive" rel="nofollow" target="_blank">http://www.team.net/archive</a><br>Forums: <a href="http://www.team.net/forums" rel="nofollow" target="_blank">http://www.team.net/forums</a><br>Unsubscribe/Manage: <a href="http://autox.team.net/mailman/options/fot/bschirano@yahoo.com" rel="nofollow" target="_blank">http://autox.team.net/mailman/options/fot/bschirano@yahoo.com</a><br><br><br></div></div></div></div></body></html>