OK - what else could I have broken? - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

Pikey · 17th August 2006, 08:09 AM

Finished putting in the new gearbox and propshaft last night

However, as I drove it out of the workshop there is a clunk as you engage the clutch - sounds like its coming from the back of the car. Im pretty certain its nothing to do with mart's gearbox or jay's prop, or the clutch itself, so maybe the rear diff is broken?

I left it at the garage as a precaution, Steve will have a look again today. Im pretty gutted as I was hoping to drive it home but never mind

lightspeed · 17th August 2006, 11:31 AM

Rear diff could be missing a tooth or more - or more likely just killed the mounting bushes/bolts on the diff or subframe.

By the looks of the damage it seized the whole transmission until the prop shaft sheared off. That's a lot of shock loading to be dealing with.

T.F.S. · 17th August 2006, 11:42 AM

TXB/diff

the calibra TXB makes a sound just as you describe when it dies but im sue the nissan version is much stronger? and less likely to fail like that

Pikey · 17th August 2006, 12:26 PM

What's a TXB?

T.F.S. · 17th August 2006, 12:27 PM

oh lol

transfer box

lightspeed · 17th August 2006, 12:41 PM

I thought you put a replacement transfer box in???

Pikey · 17th August 2006, 12:42 PM

No, its definitely not the transfer box - that's new as is the gearbox - all came as one unit out of Martin's car, which I drove prior to purchasing

gtr mart · 17th August 2006, 12:57 PM

The only transfer box related thing I can think of is that I think it was gear oil came out of my transfer box though which is what I put in my new one which again is fine. maybe its this as you put ATF fluid in your yours - mind you based on what has been said on here, it sounds like ATF is fine

Would it be the rear diff? As someone said, your gearbox was torn in half

so that must have been some force on the rest of the attached parts.

Pikey · 17th August 2006, 01:03 PM

It does it if you load the car up on the handbrake - ie if you sit with the handbrake on and bring the clutch up to biting point quite quickly you get a clunk from the back.

We havent bled the 4WD system yet and Ive turned the system off (fuse out), so there's actually no way it could try and put power to the front at the moment anyway

gtr mart · 17th August 2006, 02:26 PM

Driveshaft?

rear diff?

prop?

what else could it be? might be worth bleeding the 4wd system and running it normally. Whilst it may not be running in 4wd it may still have a connection to the front? might be worth doing just to eliminate it?

Pikey · 18th August 2006, 10:29 AM

Bit of further investigation last night, we think its broken the diff too

Moving one of the rear wheels round (with the car in the air), you can move the wheel round about half an inch, then the diff goes 'donk' then the other wheel + the prop start to move. Is this excessive?

rockabilly · 18th August 2006, 10:34 AM

diff pinion/planet cradle for deffo...sorry mate

Pikey · 18th August 2006, 12:36 PM

bugger

Pikey · 19th August 2006, 12:55 PM

Nope - it was the replacement propshaft that broke! The rear CV-joint-type-thing has broke

So I need another propshaft please anyone

(play in the diff sounds like it may be normal)

Ian C · 22nd August 2006, 10:36 PM

Good luck with the test drive Pikey.........Hope my spare bit puts the smile back on your face!

Ian

17th August 2006, 08:09 AM	#1 (permalink)
Pikey GTR Register Member Join Date: Feb 2004 Location: Cheltenham Posts: 4,151	OK - what else could I have broken? Finished putting in the new gearbox and propshaft last night However, as I drove it out of the workshop there is a clunk as you engage the clutch - sounds like its coming from the back of the car. Im pretty certain its nothing to do with mart's gearbox or jay's prop, or the clutch itself, so maybe the rear diff is broken? I left it at the garage as a precaution, Steve will have a look again today. Im pretty gutted as I was hoping to drive it home but never mind

18th August 2006, 10:34 AM	#12 (permalink)
rockabilly rb30 710bhp Join Date: Oct 2003 Location: lancashire Posts: 1,102	diff pinion/planet cradle for deffo...sorry mate __________________ fancy the south of france. http://st-tropez.mysite.orange.co.uk/

22nd August 2006, 10:36 PM	#15 (permalink)
Ian C Elitetech Automotive Join Date: Jun 2003 Location: Buckingham Posts: 1,293	Good luck with the test drive Pikey.........Hope my spare bit puts the smile back on your face! Ian __________________ +10 extra bhp for £55.... Get your baffled TWIN TURBO pipe now from GTR.co.uk Shop My project

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17th August 2006, 11:31 AM	#2 (permalink)
lightspeed GTROC Member Join Date: Jul 2002 Location: South-west Posts: 1,812	Rear diff could be missing a tooth or more - or more likely just killed the mounting bushes/bolts on the diff or subframe. By the looks of the damage it seized the whole transmission until the prop shaft sheared off. That's a lot of shock loading to be dealing with.

17th August 2006, 11:42 AM	#3 (permalink)
T.F.S. GTR Register Member Join Date: Feb 2004 Location: londonish Posts: 1,539	TXB/diff the calibra TXB makes a sound just as you describe when it dies but im sue the nissan version is much stronger? and less likely to fail like that

17th August 2006, 12:26 PM	#4 (permalink)
Pikey GTR Register Member Join Date: Feb 2004 Location: Cheltenham Posts: 4,151	What's a TXB?

17th August 2006, 12:27 PM	#5 (permalink)
T.F.S. GTR Register Member Join Date: Feb 2004 Location: londonish Posts: 1,539	oh lol transfer box

17th August 2006, 12:41 PM	#6 (permalink)
lightspeed GTROC Member Join Date: Jul 2002 Location: South-west Posts: 1,812	I thought you put a replacement transfer box in???

17th August 2006, 12:42 PM	#7 (permalink)
Pikey GTR Register Member Join Date: Feb 2004 Location: Cheltenham Posts: 4,151	No, its definitely not the transfer box - that's new as is the gearbox - all came as one unit out of Martin's car, which I drove prior to purchasing

17th August 2006, 12:57 PM	#8 (permalink)
gtr mart GTR Register Member Join Date: Mar 2004 Posts: 1,637	The only transfer box related thing I can think of is that I think it was gear oil came out of my transfer box though which is what I put in my new one which again is fine. maybe its this as you put ATF fluid in your yours - mind you based on what has been said on here, it sounds like ATF is fine Would it be the rear diff? As someone said, your gearbox was torn in half so that must have been some force on the rest of the attached parts.

17th August 2006, 01:03 PM	#9 (permalink)
Pikey GTR Register Member Join Date: Feb 2004 Location: Cheltenham Posts: 4,151	It does it if you load the car up on the handbrake - ie if you sit with the handbrake on and bring the clutch up to biting point quite quickly you get a clunk from the back. We havent bled the 4WD system yet and Ive turned the system off (fuse out), so there's actually no way it could try and put power to the front at the moment anyway

17th August 2006, 02:26 PM	#10 (permalink)
gtr mart GTR Register Member Join Date: Mar 2004 Posts: 1,637	Driveshaft? rear diff? prop? what else could it be? might be worth bleeding the 4wd system and running it normally. Whilst it may not be running in 4wd it may still have a connection to the front? might be worth doing just to eliminate it?

18th August 2006, 10:29 AM	#11 (permalink)
Pikey GTR Register Member Join Date: Feb 2004 Location: Cheltenham Posts: 4,151	Bit of further investigation last night, we think its broken the diff too Moving one of the rear wheels round (with the car in the air), you can move the wheel round about half an inch, then the diff goes 'donk' then the other wheel + the prop start to move. Is this excessive?

18th August 2006, 12:36 PM	#13 (permalink)
Pikey GTR Register Member Join Date: Feb 2004 Location: Cheltenham Posts: 4,151	bugger

19th August 2006, 12:55 PM	#14 (permalink)
Pikey GTR Register Member Join Date: Feb 2004 Location: Cheltenham Posts: 4,151	Nope - it was the replacement propshaft that broke! The rear CV-joint-type-thing has broke So I need another propshaft please anyone (play in the diff sounds like it may be normal)