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Clear as mud. That's basically what I did on my car when I put the =
Celica trans in.
Works fine.
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!
Bill
----- Original Message -----=20
From: malaboge@aol.com=20
To: toodamnfunky@comcast.net=20
Cc: fot@autox.team.net=20
Sent: Monday, June 15, 2015 10:33 PM
Subject: Re: [Fot] TR4 High speed driveline vibration
FOTer's,
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.
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.
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!
Clear as mud?
A little out of balance in Nor Cal
Nick
-----Original Message-----
From: Duncan Charlton <duncan.charlton54@gmail.com>
To: toodamnfunky <toodamnfunky@comcast.net>
Cc: fot <fot@autox.team.net>
Sent: Mon, Jun 15, 2015 12:23 pm
Subject: Re: [Fot] TR4 High speed driveline vibration
Jim,=20
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=E2=80=99re sure they=E2=80=99re balanced) =
there won=E2=80=99t be much load on the engine, so if the vibration is =
due to deformation of the mounts, the vibration should not appear.
Duncan
On Jun 15, 2015, at 10:55 AM, toodamnfunky@comcast.net wrote:
FoT,
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
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
I will inspect them. I'm wondering if anybody has any advice on high =
speed vibration diagnosis or detection.
What I'm wondering is even if it is the driveshaft how would I know =
with it sitting on my bench.=20
Any help would, as always be greatly appreciated.
Jim g
_______________________________________________
_______________________________________________ fot@autox.team.net =
http://www.fot-racing.com Donate: http://www.team.net/donate.html =
Archive: http://www.team.net/archive Forums: http://www.team.net/forums =
http://autox.team.net/mailman/options/fot/malaboge@aol.com =20
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<BODY bgColor=3D#ffffff>
<DIV><FONT size=3D2 face=3DArial>Clear as mud. That's basically what I =
did on my car=20
when I put the Celica trans in.</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial>Works fine.</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial>Someone mentioned the exhaust system =
interference.=20
Last year I did some work on the car and when I put the exhaust pipes =
back on,=20
one was very close to the rear trans mount and gave a hellish hi-freq =
vibration.=20
Ten minute fix and an oops!</FONT></DIV>
<DIV><FONT size=3D2 face=3DArial>Bill</FONT></DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; =
PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: =
black"><B>From:</B>=20
<A title=3Dmalaboge@aol.com =
href=3D"mailto:malaboge@aol.com";>malaboge@aol.com</A>=20
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
title=3Dtoodamnfunky@comcast.net=20
href=3D"mailto:toodamnfunky@comcast.net";>toodamnfunky@comcast.net</A> =
</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Cc:</B> <A =
title=3Dfot@autox.team.net=20
href=3D"mailto:fot@autox.team.net";>fot@autox.team.net</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Monday, June 15, 2015 =
10:33=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> Re: [Fot] TR4 High =
speed=20
driveline vibration</DIV>
<DIV><BR></DIV>
<DIV=20
style=3D"FONT-FAMILY: Comic Sans MS, sans-serif; COLOR: black; =
FONT-SIZE: 14pt">FOTer's,<BR>I=20
will assume this car has the stock style trans mount, not the later =
TR6 style=20
setup...yeah I know about assuming anything, but here I go.<BR>In =
order to=20
keep the rear of the trans where it belongs and yet allow some =
movement and=20
inslulation this is the mod I have utilized.<BR>Remove the 2 trans to =
mount=20
bolts and drill straight down thru those mounting holes thru the small =
trans=20
crossmember. Enlarge those new holes in that crossmember to about 5/8" =
or so.=20
Purchase 2 new bolts that are treaded all the way and are long enough =
to go=20
thru the trans, the trans mount and the crossmember. Drop the bolt =
thru the=20
trans and trans mount and start a nut up the bolt to tighten the trans =
to the=20
mount. The bolt will now extend thru the trans, the mount (tighten the =
nut=20
securely to hold them together) and the crossmember. Use a large =
washer and a=20
nyloc on the bolt where it now extends thru the crossmember. Tighten =
this=20
nylock only until it "just" contacts the crossmember. Because the bolt =
is=20
smaller than the hole you just drilled it will allow the trans to move =
a small=20
distance in any direction, but will stop any excessive movement, =
including=20
saving the radiator in event of a serious impact!<BR><BR>Clear as=20
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=20
<duncan.charlton54@gmail.com><BR>To: toodamnfunky=20
<toodamnfunky@comcast.net><BR>Cc: fot=20
<fot@autox.team.net><BR>Sent: Mon, Jun 15, 2015 12:23 =
pm<BR>Subject: Re:=20
[Fot] TR4 High speed driveline vibration<BR><BR>
<DIV id=3DAOLMsgPart_2_45cce30f-f9f0-4a0d-b0fd-8426ec08d75f>
<DIV=20
style=3D"WORD-WRAP: break-word; -webkit-nbsp-mode: space; =
-webkit-line-break: after-white-space"=20
class=3D" aolReplacedBody">Jim,=20
<DIV class=3Daolmail_><BR class=3Daolmail_></DIV>
<DIV class=3Daolmail_>How are your motor and trans mounts? If =
they allow=20
the engine/gearbox combo to shift out of line when under high torque, =
the=20
u-joints could move out of proper alignment, but then when power is =
reduced,=20
things would shift back into position. If you put the car on =
jackstands=20
and run it to this rpm in top gear (might not be a bad idea to remove =
the=20
drive wheels and tires if you=E2=80=99re sure they=E2=80=99re =
balanced) there won=E2=80=99t be much=20
load on the engine, so if the vibration is due to deformation of the =
mounts,=20
the vibration should not appear.</DIV>
<DIV class=3Daolmail_>
<DIV class=3Daolmail_>
<DIV class=3Daolmail_><BR class=3Daolmail_>
<DIV class=3Daolmail_>
<DIV class=3Daolmail_>Duncan</DIV>
<DIV class=3Daolmail_><BR class=3Daolmail_></DIV>
<DIV class=3Daolmail_><BR class=3Daolmail_>
<DIV>
<BLOCKQUOTE class=3Daolmail_ type=3D"cite">
<DIV class=3Daolmail_>On Jun 15, 2015, at 10:55 AM, <A =
class=3Daolmail_=20
=
href=3D"mailto:toodamnfunky@comcast.net";>toodamnfunky@comcast.net</A>=20
wrote:</DIV><BR class=3Daolmail_Apple-interchange-newline>
<DIV class=3Daolmail_>
<DIV class=3Daolmail_>
<DIV style=3D"FONT-FAMILY: Arial; FONT-SIZE: 12pt" class=3Daolmail_>
<DIV class=3Daolmail_>FoT,<BR class=3Daolmail_></DIV>
<DIV class=3Daolmail_>I have a driveline vibration that doesn't =
start up until=20
I get to about 95- 100 MPH. I figured I would start with the=20
driveshaft</DIV>
<DIV class=3Daolmail_>before looking into the diff or OD/trans. I =
have an IRS=20
car with Richard Good CV axles and hubs so it's very un likely its =
that=20
but</DIV>
<DIV class=3Daolmail_>I will inspect them. I'm wondering if anybody =
has any=20
advice on high speed vibration diagnosis or detection.</DIV>
<DIV class=3Daolmail_>What I'm wondering is even if it is the =
driveshaft how=20
would I know with it sitting on my bench. </DIV>
<DIV class=3Daolmail_>Any help would, as always be greatly =
appreciated.</DIV>
<DIV class=3Daolmail_>Jim=20
=
g</DIV></DIV></DIV>_______________________________________________<BR=20
class=3Daolmail_><BR class=3Daolmail_><BR class=3Daolmail_><BR =
class=3Daolmail_><BR=20
class=3Daolmail_></DIV></BLOCKQUOTE></DIV><BR=20
class=3Daolmail_></DIV></DIV></DIV></DIV></DIV></DIV></DIV>
<DIV=20
style=3D"BACKGROUND-COLOR: #fff; MARGIN: 0px; FONT-FAMILY: Tahoma, =
Verdana, Arial, Sans-Serif; COLOR: #000; FONT-SIZE: 12px"=20
id=3DAOLMsgPart_3_45cce30f-f9f0-4a0d-b0fd-8426ec08d75f><PRE =
style=3D"FONT-SIZE: =
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