Drivetrain slop

petercz · Apr 9th, 2021, 10:23

On my 940, when I get on or off throttle, I feel kick/bang to the body from rear axle or drive shaft. I already replaced the drive shaft center support and torque rods bushings. Can it be the rear subframe bushings or something else?

griston64 · Apr 9th, 2021, 10:39

Quote:

Originally Posted by petercz

On my 940, when I get on or off throttle, I feel kick/bang to the body from rear axle or drive shaft. I already replaced the drive shaft center support and torque rods bushings. Can it be the rear subframe bushings or something else?

I would suggest the torque rod bushes causes that clunk/bang but as you have replaced them I'm at a loss I'm afraid

Rversteeg · Apr 9th, 2021, 11:19

Any rattle when switching off the engine? Could be the DMF on its way out.

Chooch84 · Apr 9th, 2021, 13:06

Quote:

Originally Posted by griston64

I would suggest the torque rod bushes causes that clunk/bang but as you have replaced them I'm at a loss I'm afraid

+1

I would also check the fixing points at the rear subframe where the torque rods bolt up to make sure the holes haven't elongated out.

The above happened to me, I ended up having to weld up some thick washer to the rear subframe as well replacing the bolts as I noticed that the threaded section of the bolt was the culprit. I used bolts that had a longer unthreaded section, so the unthreaded section makes contact with the washer/sub-frame as opposed to the reduced cross-section of the thread.

Laird Scooby · Apr 9th, 2021, 15:03

Given you've lowered it, i would also look at the bushes first but also the UJ on the porpshaft where it connects to the diff as you've permanently altered the diff nose angle by lowering it.

petercz · Apr 9th, 2021, 20:02

Thanks guys, clutch is already swapped for single mass with diesel setup, UJ was also checked not a while ago (without noticeable play). I will check the subframe holes. Also thinking about mounting some camera under the car, so I can see the movements

360beast · Apr 9th, 2021, 20:31

What is the condition of the gearbox mount like?

petercz · Apr 9th, 2021, 21:30

It´s in good shape, was replaced some time ago, same for engine mount...

Apr 9th, 2021, 10:23	#1
petercz Member Last Online: Apr 16th, 2024 16:58 Join Date: Aug 2011 Location: CZ	Drivetrain slop On my 940, when I get on or off throttle, I feel kick/bang to the body from rear axle or drive shaft. I already replaced the drive shaft center support and torque rods bushings. Can it be the rear subframe bushings or something else? __________________ '96 850 R, B5234T5, AW42-50LE \| '89 764 GLE, D24TIC, ZF 4HP22 '97 944 Turbo, B230FK, M90 (145kW/330NM - Vialle LPi, BTI chips, 16T@0.8bar, 3"DP+2,5"cat-back, wasted-spark, DO88 IC, Bilstein B6, lowered, dual-sways...)

Apr 9th, 2021, 11:19	#3
Rversteeg Master Member Last Online: Yesterday 13:57 Join Date: Feb 2006 Location: Amersfoort (NL)	Dual Mass Flywheel Any rattle when switching off the engine? Could be the DMF on its way out.

Apr 9th, 2021, 15:03	#5
Laird Scooby Premier Member Last Online: Yesterday 12:22 Join Date: May 2012 Location: Lakenheath	Given you've lowered it, i would also look at the bushes first but also the UJ on the porpshaft where it connects to the diff as you've permanently altered the diff nose angle by lowering it. __________________ Cheers Dave Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........

Apr 9th, 2021, 20:02	#6
petercz Member Last Online: Apr 16th, 2024 16:58 Join Date: Aug 2011 Location: CZ	Thanks guys, clutch is already swapped for single mass with diesel setup, UJ was also checked not a while ago (without noticeable play). I will check the subframe holes. Also thinking about mounting some camera under the car, so I can see the movements __________________ '96 850 R, B5234T5, AW42-50LE \| '89 764 GLE, D24TIC, ZF 4HP22 '97 944 Turbo, B230FK, M90 (145kW/330NM - Vialle LPi, BTI chips, 16T@0.8bar, 3"DP+2,5"cat-back, wasted-spark, DO88 IC, Bilstein B6, lowered, dual-sways...)

Apr 9th, 2021, 21:30	#8
petercz Member Last Online: Apr 16th, 2024 16:58 Join Date: Aug 2011 Location: CZ	It´s in good shape, was replaced some time ago, same for engine mount... __________________ '96 850 R, B5234T5, AW42-50LE \| '89 764 GLE, D24TIC, ZF 4HP22 '97 944 Turbo, B230FK, M90 (145kW/330NM - Vialle LPi, BTI chips, 16T@0.8bar, 3"DP+2,5"cat-back, wasted-spark, DO88 IC, Bilstein B6, lowered, dual-sways...)

Apr 9th, 2021, 20:31	#7
360beast Go redblock or go home Last Online: Today 07:10 Join Date: Feb 2012 Location: UK	What is the condition of the gearbox mount like?

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