[Roadsters] Vibration

[Mark]

  The mount is close to that dimension - I am going to pull it and 
verify just in case...
But in a quick look a few minutes ago, phasing may be out - while not at 
90 degrees out, I wonder if something less will cause it - ?  I guess 
the splines on the front of the shaft will allow it to go together in a 
multitude of positions?

Mark


On 9/1/2010 2:15 PM, Gordon Glasgow wrote:
> 5-speed trans mount is about 1.95" or 50 mm top to bottom.
>
> When you put the driveshaft back in, did you make sure to get the phasing
> right on the u-joints? That can cause vibrations.
> http://www.bmwmotorcycletech.info/phasing.htm
>
>
> Gordon Glasgow
>
> -----Original Message-----
> From: datsun-roadsters-bounces at autox.team.net
> [mailto:datsun-roadsters-bounces at autox.team.net] On Behalf Of Mark
> Sent: Wednesday, September 01, 2010 8:41 AM
> To: datsun-roadsters at autox.team.net
> Subject: [Roadsters] Vibration
>
>    I had the engine trans out of my 70 SRL and noticed the trans mount
> was in dire need of replacement.  I used the Prothane mount as it seemed
> the closest to the stock thickness.  It was a fairly painless
> swap....but now I have this vibration that starts to be noticeable at
> about 40 MPH - it gets smoother as speed goes up but it is still
> noticeable....does not change with the clutch in or the trans out of
> gear and coasting.  It is very apparent for in the 40-55 MPH range.  My
> first reaction was to replace the u-joints, absolutely no change.  So I
> am now wondering if anyone has a stock 5-speed trans mount they could
> measure for thickness?   Mine was so far gone I could not salvage the
> pieces.....!  Or could this be a drive shaft balance problem?
>
> Mark
> -Ohio
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