Or just buy one of the ARE poly trans mounts and forgetaboutit.
Bob Kramer
rkramer3@austin.rr.com
---- malaboge@aol.com wrote:
> 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,
> How are your motor and trans mounts? Â 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. Â 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
> youâ??re sure theyâ??re balanced) there wonâ??t 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.
> Any help would, as always be greatly appreciated.
> Jim g
>
>
> _______________________________________________
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>
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