<html><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>A friend of mine had an odd vib, on a whim he swapped the drums and yeah it went away.</div><div><br></div><div>A.</div><div><br></div><br><div><div>On 15-Sep-08, at 9:20 PM, <a href="mailto:JHOUATHOME@aol.com">JHOUATHOME@aol.com</a> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"> <div id="role_body" style="FONT-SIZE: 10pt; COLOR: #000000; FONT-FAMILY: Arial" bottommargin="7" leftmargin="7" topmargin="7" rightmargin="7"><font id="role_document" face="Arial" color="#000000" size="2"> <div>Greg, </div> <div>My TR4 used to have a similar mystery vibration, which in the end, after much frustrating searching over many events, turned out to be an out of balance rear brake drum. Stupid, I know. I had also been through several attempts to balance wheels, replace wheels, and balance everything else, and simply never thought of those old iron drums. I swapped them out and never had the problem again. The strangest thing about it was that the problem seemed to be intermittent, and would crop-up with no pattern that I could figure out. In the end, that was it though. Upon more careful consideration I realized that it was only happening at Road America, the Glen, and BIR, all pretty fast places. I was delighted to figure it out. Hope this is your problem, and not something more expensive!</div> <div> </div> <div>Good Luck,</div> <div>John Houlton</div> <div> </div> <div> <div>In a message dated 9/15/2008 7:57:35 P.M. Central Daylight Time, <a href="mailto:lunkercars@earthlink.net">lunkercars@earthlink.net</a> writes:</div> <blockquote style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><font style="BACKGROUND-COLOR: transparent" face="Arial" color="#000000" size="2">Hello all,<br>Beaten by equipment...<br>My previous posting from Brainard quoted the common wisdom "you <br>gotta' finish to win". Well, I was reminded that you gotta' start to <br>finish. Sunday at Brainard shaped up to be what I would call "ideal <br>conditions"... cold, wet and basically miserable enough that only <br>fools/idiots/& the die-hards like me [3 in 1] would dare go out - <br>perfect. Not sure if excessive oil pressure from the 40ish temp on my <br>20W50 caused it [doubtful] or if it was just it's time, but upon <br>startup for the sunday race the oil cooler chose to rupture in the <br>pits and that was the end of that. Could have by-passed it for the <br>next race but it was canceled due to conditions too perfect for me to <br>even imagine. Oh well - finding out that the top 4 finishers behind <br>me on saturday are all ice racers boosted my ego enough and knowing <br>that they were all gunning for me might not have made sunday quite as <br>enjoyable as saturday.<br>Interesting to note that that although I do buy better that 50% of my <br>perts from Moss, 100% of my failures have been from parts they have <br>supplied. Once again, my cheepo nature has proven to be false <br>economy and bitten me in the butt.<br>Now on to good vibrations and bad vibrations. The Beach Boys told us <br>about the good ones but some aren't and never will be. First time I <br>ever felt the bad one was at Watkins Glen. It may well have existed <br>before but my car has never been on a track that fast. So far as my <br>butt and brain can tell, it doesn't come on until somewhere beyond <br>100mph. After getting the driveshaft straightened last week I thought <br>I had surely got to the problem. First couple sessions at Brainard <br>felt good but that proved to be a combination of wishful thinking and <br>not going fast enough. It's still there. For a time at The Glen and <br>again at Brainard I almost convinced myself that it was 4th gear only <br>but I am now pretty sure that it is only dependent on road speed - <br>i.e., it's felt near redline in 3rd and only gets worse as 4th <br>progresses. Scared the speed right out of me the first time I felt it <br>come on, but after many teeth grinding laps with nothing coming thru <br>the block [convinced it's not engine related], the trans. case, or <br>thru the floor, I've lived with it thru the last two races. Doesn't <br>mean I like it and that combined with a bum oil cooler, moody starter <br>[thanks again Moss Motors] and exorbitant entry fees, will likely <br>keep me from going to Road America.<br>Any Ideas? The drive-shaft straightening didn't seem to do anything. <br>I've run it on 3 different sets of tires and wheels, so that's not <br>it. U-joints are fine [by all appearances], can't find any slop in <br>the trans. output shaft or the diff, input [pinion] shaft nor any run- <br>out on the input shaft flange or axles. Defiantly not coming from <br>the front as it is not transmitted thru the steering wheel. Rear axle <br>bearings seem to be in fine shape.<br>The engine is fresh and in good balance. The trans. is new to me <br>[close ratio in a TR6 case] but no recognized problems from the <br>previous FoT owner. I have given the original, stock, open. 3.70 <br>differential a hard life since it's early retirement but I still <br>can't see how that would figure in. The only unknown is my frozen <br>axle shafts... As part of my recent "freshening", I sent the crank <br>shaft [more on that later], stub axles, front hubs, rear hubs and <br>half shafts to Controlled Thermal Processing [<a href="http://metal-wear.com">http://metal-wear.com</a>] <br>to be cryogenically frozen [-300f/+300f in a 68 hour process]. Being <br>unknown voodoo, I'm creating a scenario where the axle[s] have a bow <br>in it [them] causing a imbalance, causing the vibration but not <br>detectable from the flange end - not very likely but I'm grasping at <br>straws here [oh yea, I'm still in the mid-west so it must be corn].<br>Please believe me, at this point I am willing to consider any ideas <br>regardless how far fetched. And maybe one [some] of you know what I'm <br>feeling and have the spot-on answer.<br><br>Greg "Lunker" Hilyer<br>TR4 #314<br>Albuquerque NM <br> <br>_______________________________________________<br><a href="http://www.team.net/donate.html">http://www.team.net/donate.html</a><br><br>Fot mailing list<br>Fot@autox.team.net<br>http://autox.team.net/mailman/listinfo/fot<br><br></font></blockquote></div></font><br><br><br><div><font style="color: black; font: normal 10pt ARIAL, SAN-SERIF;"><hr style="MARGIN-TOP: 10px">Psssst...Have you heard the news? <a title="http://www.stylelist.com/trends?ncid=aolsty00050000000014" href="http://www.stylelist.com/trends?ncid=aolsty00050000000014" target="_blank">There's a new fashion blog, plus the latest fall trends and hair styles at StyleList.com</a>.</font></div></div> _______________________________________________<br><a href="http://www.team.net/donate.html">http://www.team.net/donate.html</a><br><br>Fot mailing list<br>Fot@autox.team.net<br>http://autox.team.net/mailman/listinfo/fot<br><br></blockquote></div><br><div apple-content-edited="true"> <span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">--</div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Andre Rousseau - <a href="mailto:andre@gt6.ca">andre@gt6.ca</a></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">'68 Triumph GT6 MK1 - <a href="http://www.gt6.ca/">http://www.gt6.ca/</a></div><div style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; ">Ottawa, ON, Canada</div></div></div></span></div></span> </div><br></body></html>