R32 Gtr Long Term Love, Now Project

[r32-25t]

The sensor grounds all go back to the ecu and none of them are on the battery ground, Adam suggest putting the flex sensor straight to earth because of it being a frequency signal can play with the others 

it does it on the road now that I’ve driven it and paid attention, not sure if it’s rpm or load making it happen though 

[r32-25t]

One of the issues Adam mentioned was the tail shaft center bearing being flogged out, I took the shaft down to be rebuilt after a conversation with the owner of the shop it was decided a whole new shaft was the best way to go. 
 

so after taking measurements and waiting a week my new shaft was ready to pick up

 

new and old shafts next to each other, yes the new one piece shaft and was worried about vibration, after driving the car turns out that there is nothing to worry about 

[The Bogan]

1 hour ago, r32-25t said:

One of the issues Adam mentioned was the tail shaft center bearing being flogged out, I took the shaft down to be rebuilt after a conversation with the owner of the shop it was decided a whole new shaft was the best way to go. 
 

so after taking measurements and waiting a week my new shaft was ready to pick up

 

new and old shafts next to each other, yes the new one piece shaft and was worried about vibration, after driving the car turns out that there is nothing to worry about 

The only requirements/issue with one piece tail shafts is tail shaft RPM, the length of it, the diameter of it,  the pinion angle, and material used

Daily driving at 110 kph it top gear with a one piece will probably never see any harmonic issues at ???? tail shaft RPM, but, at 200kph you might see some harmonic issues if your tail shaft isn't spec'd right

I looked into this alot when I was looking at a new tail shaft for my VX SS after it constantly flogged out centre bearings and getting vibration over 160kph, in saying this my "pinion" angle from the gearbox to the centre bearing was the issue, slightly to much angle caused the centre bearing to flog out from harmonic vibration at high tail shaft RPM, but for me the issue was the 12mm lower engine mounts, after getting the angle of the dangle from the transmission to the centre bearing lined up correctly, and to within spec (OEM height poly mounts), the car is happy at 200 kph (125mph at the drags) now even with the OEM spec centre bearing and rebuilt OEM 2 piece tail shaft

What's your tail shaft specs?

[r32-25t]

Approx 1m long, chrome moly, hardy splicer unis. Didn’t measure the diameter. The shop that built it also builds the shafts for b2r, jem, maatouks, etc and built the shaft to the same specs as their cars that’s are running 7 and 8 second passes!! Which say to me that it can handle some big mph