<html><body><div style="font-family: Arial; font-size: 12pt; color: #000000"><div aria-label="Compose body">The rattling is likely piston slap on cold forged pistons. Did it go away when it warmed up and came back on the next cold start ?</div><div aria-label="Compose body">jim</div><div><br></div><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;" data-mce-style="color: #000; font-weight: normal; font-style: normal; text-decoration: none; font-family: Helvetica,Arial,sans-serif; font-size: 12pt;"><b>From: </b>"Steve Yott" <tr4@wi.rr.com><br><b>To: </b>"Robert Lang" <robertlangtr6@yahoo.com>, "FOT List" <fot@autox.team.net><br><b>Sent: </b>Wednesday, May 25, 2016 11:27:27 AM<br><b>Subject: </b>Re: [Fot] TR6 Piston / Head Clearance<br><div><br></div><style>
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</style><div class="Section1"><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D" data-mce-style="font-size: 11.0pt; font-family: 'Calibri','sans-serif'; color: #1f497d;">I doubt that your .030 squish would cause the rattling as you describe. The deflection caused by the crank, rod and piston in order to hit the head at .030 would be way up in the rpm’s like 8000!</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D" data-mce-style="font-size: 11.0pt; font-family: 'Calibri','sans-serif'; color: #1f497d;"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D" data-mce-style="font-size: 11.0pt; font-family: 'Calibri','sans-serif'; color: #1f497d;">Did the rattling go away after all the parts warmed up and oil was well disbursed or is it still rattling? My first guess would be either the engine was not pre-oiled or you have loose piston pin bushings…. Were the rods rebuilt with new bushings fitted to about .0003? </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D" data-mce-style="font-size: 11.0pt; font-family: 'Calibri','sans-serif'; color: #1f497d;"> </span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D" data-mce-style="font-size: 11.0pt; font-family: 'Calibri','sans-serif'; color: #1f497d;">Steve Yott</span></p><p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D" data-mce-style="font-size: 11.0pt; font-family: 'Calibri','sans-serif'; color: #1f497d;"> </span></p><div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in" data-mce-style="border: none; border-top: solid #B5C4DF 1.0pt; padding: 3.0pt 0in 0in 0in;"><p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" data-mce-style="font-size: 10.0pt; font-family: 'Tahoma','sans-serif';">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" data-mce-style="font-size: 10.0pt; font-family: 'Tahoma','sans-serif';"> Fot [mailto:fot-bounces@autox.team.net] <b>On Behalf Of </b>Robert Lang<br> <b>Sent:</b> Wednesday, May 25, 2016 11:29 AM<br> <b>To:</b> FOT List<br> <b>Subject:</b> Re: [Fot] TR6 Piston / Head Clearance</span></p></div></div><p class="MsoNormal"> </p><div><div><p class="MsoNormal" style="background:white" data-mce-style="background: white;"><span style="font-family:"Helvetica","sans-serif";
color:black" data-mce-style="font-family: 'Helvetica','sans-serif'; color: black;">Hi,</span></p></div><div id="yui_3_16_0_ym19_1_1464192999183_4039"><p class="MsoNormal" style="background:white" data-mce-style="background: white;"><span style="font-family:"Helvetica","sans-serif";
color:black" data-mce-style="font-family: 'Helvetica','sans-serif'; color: black;"> </span></p></div><div id="yui_3_16_0_ym19_1_1464192999183_4040"><p class="MsoNormal" style="background:white" data-mce-style="background: white;"><span style="font-family:"Helvetica","sans-serif";
color:black" data-mce-style="font-family: 'Helvetica','sans-serif'; color: black;">Where I was going with the query was this: I had a late block "decked" with the intent of making the deck flat. The machinist took of .032 to accomplish the goal. With a head gasket installed and the head torqued, the clearance in the squish area is .030.</span></p></div><div id="yui_3_16_0_ym19_1_1464192999183_4041"><p class="MsoNormal" style="background:white" data-mce-style="background: white;"><span style="font-family:"Helvetica","sans-serif";
color:black" data-mce-style="font-family: 'Helvetica','sans-serif'; color: black;">I had initially wanted only about .025 removed, but we had to shave an extra .007 to get rid of the fire ring cuts.</span></p></div><div id="yui_3_16_0_ym19_1_1464192999183_4042"><p class="MsoNormal" style="background:white" data-mce-style="background: white;"><span style="font-family:"Helvetica","sans-serif";
color:black" data-mce-style="font-family: 'Helvetica','sans-serif'; color: black;">On initial startup, the motor sounded like it might be "rattling" and I'm trying to figure out why.</span></p></div><div id="yui_3_16_0_ym19_1_1464192999183_4043"><p class="MsoNormal" style="background:white" data-mce-style="background: white;"><span style="font-family:"Helvetica","sans-serif";
color:black" data-mce-style="font-family: 'Helvetica','sans-serif'; color: black;">When I used a stethescope on the block, everything sounds okay - no rapping and the valve train sounds "normal" and there were no weird sounds coming from the crank.</span></p></div><div id="yui_3_16_0_ym19_1_1464192999183_4055"><p class="MsoNormal" style="background:white" data-mce-style="background: white;"><span style="font-family:"Helvetica","sans-serif";
color:black" data-mce-style="font-family: 'Helvetica','sans-serif'; color: black;">I guess where I'm going with this is: if piston / head clearance is too tight, I'll see some sort of indication on the piston, right?</span></p></div><div id="yui_3_16_0_ym19_1_1464192999183_4056"><p class="MsoNormal" style="background:white" data-mce-style="background: white;"><span style="font-family:"Helvetica","sans-serif";
color:black" data-mce-style="font-family: 'Helvetica','sans-serif'; color: black;">TIA for any sage advice.</span></p></div><div><p class="MsoNormal" style="background:white" data-mce-style="background: white;"><span style="font-family:"Helvetica","sans-serif";
color:black" data-mce-style="font-family: 'Helvetica','sans-serif'; color: black;">This is my first experience "decking" a block. I'd like to get it right, I don't have the resources to start a new block from scratch.</span></p></div><div><p class="MsoNormal" style="background:white" data-mce-style="background: white;"><span style="font-family:"Helvetica","sans-serif";
color:black" data-mce-style="font-family: 'Helvetica','sans-serif'; color: black;">Regards,</span></p></div><div><p class="MsoNormal" style="background:white" data-mce-style="background: white;"><span style="font-family:"Helvetica","sans-serif";
color:black" data-mce-style="font-family: 'Helvetica','sans-serif'; color: black;">Bob Lang</span></p></div><div id="yui_3_16_0_ym19_1_1464192999183_3788"><p class="MsoNormal" style="background:white" data-mce-style="background: white;"><span style="font-family:"Helvetica","sans-serif";
color:black" data-mce-style="font-family: 'Helvetica','sans-serif'; color: black;"> </span></p></div></div></div><br>_______________________________________________<br>fot@autox.team.net<br><div><br></div>http://www.fot-racing.com<br><div><br></div>Donate: http://www.team.net/donate.html<br>Archive: http://www.team.net/archive<br>Forums: http://www.team.net/forums<br>Unsubscribe/Manage: http://autox.team.net/mailman/options/fot/toodamnfunky@comcast.net<br><div><br></div><br></div><div><br></div></div></body></html>