[Fot] TR4 High speed driveline vibration

[tony at tonydrews.com]

In my case, the bolts at the transmission / driveshaft flange had  
started to come loose.  Only felt it in top gear at high rpm.  Really  
obvious when I started to dig into it.

Tony Drews

Quoting toodamnfunky at comcast.net:

> 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