R33 Clunking While Driving Straight

[r33guy21]

Hey guys I've got a couple little (I hope) problems with my 1995 R33 GTS25T

First of all I have a Nismo 1.5 way (according to previous owner) diff and it does shudder at low speed turns (carparks etc). I'm not really a fan of it as this is my daily driver but now I've gotten used to it, it doesn't really bother me. What is bothering me is as of about a week ago it (or something) has started to shudder/clunk while I'm driving in a straight line, on flat road going about 20-30 km's and stops about 40-50 km's. It never used to do this. As soon as the car was straight at low speeds it was smooth, only on turns it would shudder. If I'm cruising in 2nd gear at a steady speed I can hear and feel it shuddering/clunking (not as bad as the turning shuddering but it's still very noticable). The best example I can give is it sounds exactly the same as the diff shuddering at low speed turns but the shuddering is more slow (longer interval between each shudder/clunk). I think the diff oil is the culprit as I had it changed around the time the problem came about (not sure what they put in it, but the shop I took it too had a few GTR's out the front and I told them it had a Nismo 1.5 way in it, so I let them decide). I think the oil is either the problem or I just need to drive it a bit more to wear the oil in or whatever. I have done about ~200 km's since I got it back. Also the noise does go away once I press the clutch in.

The other problem I have is when I accelerate hard in any gear the car veers off to the left, I don't feel the steering wheel move but I have to steer right to compensate for it. Once I'm driving straight at a steady speed the steering wheel is straight and if I let go of the wheel, the car drives perfectly straight. Even when braking and letting the wheel go the car still stays straight, It's only when accelerating. I have checked the tyre pressures and they are fine.

Both of these problems arose at around the same time.

Anyway I will be taking it to a mechanic as soon as I have the time (it's my daily driver so I need it for work...) was just wondering what you guys think, I have had a good search and I have been a lurker of this site for quite a while and all I could find was stuff about the Nismo/KAAZ shuddering on turning but I couldn't find anything about the shuddering while driving straight.

Thanks.

[niZmO_Man]

Checked suspension mounts? Tailshaft?

[GTSBoy]

Broken axle. Held together by CV boot.

[r33guy21]

Thanks guys had someone have a look at it today and he reckons it is the axle. Taking it to a mechanic tomorrow.