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<DIV><FONT size=2 face=Arial>Clear as mud. That's basically what I did on my car
when I put the Celica trans in.</FONT></DIV>
<DIV><FONT size=2 face=Arial>Works fine.</FONT></DIV>
<DIV><FONT size=2 face=Arial>Someone mentioned the exhaust system interference.
Last year I did some work on the car and when I put the exhaust pipes back on,
one was very close to the rear trans mount and gave a hellish hi-freq vibration.
Ten minute fix and an oops!</FONT></DIV>
<DIV><FONT size=2 face=Arial>Bill</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=malaboge@aol.com href="mailto:malaboge@aol.com">malaboge@aol.com</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=toodamnfunky@comcast.net
href="mailto:toodamnfunky@comcast.net">toodamnfunky@comcast.net</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Cc:</B> <A title=fot@autox.team.net
href="mailto:fot@autox.team.net">fot@autox.team.net</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Monday, June 15, 2015 10:33
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Fot] TR4 High speed
driveline vibration</DIV>
<DIV><BR></DIV>
<DIV
style="FONT-FAMILY: Comic Sans MS, sans-serif; COLOR: black; FONT-SIZE: 14pt">FOTer's,<BR>I
will assume this car has the stock style trans mount, not the later TR6 style
setup...yeah I know about assuming anything, but here I go.<BR>In order to
keep the rear of the trans where it belongs and yet allow some movement and
inslulation this is the mod I have utilized.<BR>Remove the 2 trans to mount
bolts and drill straight down thru those mounting holes thru the small trans
crossmember. Enlarge those new holes in that crossmember to about 5/8" or so.
Purchase 2 new bolts that are treaded all the way and are long enough to go
thru the trans, the trans mount and the crossmember. Drop the bolt thru the
trans and trans mount and start a nut up the bolt to tighten the trans to the
mount. The bolt will now extend thru the trans, the mount (tighten the nut
securely to hold them together) and the crossmember. Use a large washer and a
nyloc on the bolt where it now extends thru the crossmember. Tighten this
nylock only until it "just" contacts the crossmember. Because the bolt is
smaller than the hole you just drilled it will allow the trans to move a small
distance in any direction, but will stop any excessive movement, including
saving the radiator in event of a serious impact!<BR><BR>Clear as
mud?<BR><BR>A little out of balance in Nor Cal<BR>Nick<BR></DIV>
<DIV><BR></DIV>
<DIV><BR></DIV>-----Original Message-----<BR>From: Duncan Charlton
<duncan.charlton54@gmail.com><BR>To: toodamnfunky
<toodamnfunky@comcast.net><BR>Cc: fot
<fot@autox.team.net><BR>Sent: Mon, Jun 15, 2015 12:23 pm<BR>Subject: Re:
[Fot] TR4 High speed driveline vibration<BR><BR>
<DIV id=AOLMsgPart_2_45cce30f-f9f0-4a0d-b0fd-8426ec08d75f>
<DIV
style="WORD-WRAP: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space"
class=" aolReplacedBody">Jim,
<DIV class=aolmail_><BR class=aolmail_></DIV>
<DIV class=aolmail_>How are your motor and trans mounts? If they allow
the engine/gearbox combo to shift out of line when under high torque, the
u-joints could move out of proper alignment, but then when power is reduced,
things would shift back into position. If you put the car on jackstands
and run it to this rpm in top gear (might not be a bad idea to remove the
drive wheels and tires if you’re sure they’re balanced) there won’t be much
load on the engine, so if the vibration is due to deformation of the mounts,
the vibration should not appear.</DIV>
<DIV class=aolmail_>
<DIV class=aolmail_>
<DIV class=aolmail_><BR class=aolmail_>
<DIV class=aolmail_>
<DIV class=aolmail_>Duncan</DIV>
<DIV class=aolmail_><BR class=aolmail_></DIV>
<DIV class=aolmail_><BR class=aolmail_>
<DIV>
<BLOCKQUOTE class=aolmail_ type="cite">
<DIV class=aolmail_>On Jun 15, 2015, at 10:55 AM, <A class=aolmail_
href="mailto:toodamnfunky@comcast.net">toodamnfunky@comcast.net</A>
wrote:</DIV><BR class=aolmail_Apple-interchange-newline>
<DIV class=aolmail_>
<DIV class=aolmail_>
<DIV style="FONT-FAMILY: Arial; FONT-SIZE: 12pt" class=aolmail_>
<DIV class=aolmail_>FoT,<BR class=aolmail_></DIV>
<DIV class=aolmail_>I have a driveline vibration that doesn't start up until
I get to about 95- 100 MPH. I figured I would start with the
driveshaft</DIV>
<DIV class=aolmail_>before looking into the diff or OD/trans. I have an IRS
car with Richard Good CV axles and hubs so it's very un likely its that
but</DIV>
<DIV class=aolmail_>I will inspect them. I'm wondering if anybody has any
advice on high speed vibration diagnosis or detection.</DIV>
<DIV class=aolmail_>What I'm wondering is even if it is the driveshaft how
would I know with it sitting on my bench. </DIV>
<DIV class=aolmail_>Any help would, as always be greatly appreciated.</DIV>
<DIV class=aolmail_>Jim
g</DIV></DIV></DIV>_______________________________________________<BR
class=aolmail_><BR class=aolmail_><BR class=aolmail_><BR class=aolmail_><BR
class=aolmail_></DIV></BLOCKQUOTE></DIV><BR
class=aolmail_></DIV></DIV></DIV></DIV></DIV></DIV></DIV>
<DIV
style="BACKGROUND-COLOR: #fff; MARGIN: 0px; FONT-FAMILY: Tahoma, Verdana, Arial, Sans-Serif; COLOR: #000; FONT-SIZE: 12px"
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