Transmission problem - with vids (UPDATE)

29th April 2011, 14:29

Guys, since getting the car back on the road I haven't given it anything so didn't notice this before putting the car through the MOT (which it passed anyway). I was going around a roundabout when I felt a slight juddering through the steering wheel (no noise though!). I tried a few more times to get this problem to occur and it seemed speed/loading dependant - basically when turning to the right with sufficient speed (i.e. loading the left wheel) the judder would occur. Not to the right.

Jacked the car up and had a look underneath and here's what I can see. When rotating the left wheel (the right was on the floor to stop any motion on that side)... the whole gearbox/engine assembly has a slight lateral shift to it - only a few mm's but it's enough at high speed and loading to produce a very noticeable judder.

Here's the first vid of the top of the gearbox mount.

and here's the one show more clearly what's going on.

What's going on guys!?!?!?

PLEASE HELP
NB: replaced the driveshafts, droplinks, ARB bushes, brake calipers, disks and pads prior to all this happening... Could the driveshaft(s) be causing this?

Thanks,

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29th April 2011, 14:32

looks like an engine mount problem (ie wear/broken) which means the engine can move?

29th April 2011, 14:37

Did you refit the metal insert which goes inside the rubber gearbox mount?

29th April 2011, 14:52

Looks like you have an un-even wheel?

Is it buckled?

Something's not straight because it's pushing the drive shaft in and out...

29th April 2011, 14:55

Quote:

Originally Posted by raunchz

looks like an engine mount problem (ie wear/broken) which means the engine can move?

I had a look dude but couldn't see anything broken physically, the engine only moves by a few mm

and if it was broken it wouldn't move in the vids I would have thought. Something is causing the engine to move

Quote:

Originally Posted by LeeumH

Did you refit the metal insert which goes inside the rubber gearbox mount?

I never took the metal insert out man

I'm thinking it's the driveshaft... if you look at the second vid... you can see the postion of the shaft remaining constant whilst I rotate it but the inner spline section moves back and forth. Could there bit a machining fault? Or could something in the diff cause the movement?

thanks,

ads

EDIT:

Quote:

Originally Posted by Bikekid450

Looks like you have an un-even wheel?
Is it buckled?

Something's not straight because it's pushing the drive shaft in and out...

I hadn't thought about an uneven wheel! I'm not sure how that would push the driveshaft though since the strut can't move left and right... if I thinking this through properly?!

29th April 2011, 14:56

Ah sorry, so when you turn the n/s wheel, there is some resistance which moves the engine side to side? If so then I'd say it was a driveshaft problem as that's the only thing which connect the rotating of the driving wheel, to the movement of the gearbox.

I thought it was you moving the engine side to side.

29th April 2011, 14:58

the movement looks to be in the inner CV of that passenger driveshaft from watching the second video.

29th April 2011, 14:59

Quote:

Originally Posted by raunchz

Ah sorry, so when you turn the n/s wheel, there is some resistance which moves the engine side to side? If so then I'd say it was a driveshaft problem as that's the only thing which connect the rotating of the driving wheel, to the movement of the gearbox.

I thought it was you moving the engine side to side.

nononononon. whoops this was just me rotating wheel nothing else... I'll update the first post

29th April 2011, 15:08

Your drive shaft might not be in properly?
It might be bent?
The bearing might be bent?

Turn the other wheel, is it the same?

7th June 2011, 00:16

RIGHT GUYS,

Got back to the car for the first time since posting this thread. I did a few checks on the transmission on the front - lobbed the engine on at idle and left it in first. Wish I'd filmed it now but the wobble was very obvious, though I doubt any damage to the mounts has occurred since I'm on the nice thick rubbery originals

Checked which shaft might be causing it by stopping one of the wheels - suspected nearside.

Removed and replaced nearside and the wobble stopped. So now my car has ZERO problems and runs great. yee haa.

Thanks for the help!

7th June 2011, 00:19

Were the shafts those uprated jobbies from TRS?

I take they exchanged the dodgy one no problem?

7th June 2011, 00:25

Yep they were the TRS comp shafts. I spoke to Chris around the time I first found the problem. He was excellent back then so have no doubt he'll be just as helpful now that the driveshaft has been confirmed as suspect. Despite this issue, they are with out doubt high quality bits of gear - the feel of the CV compared to standard ones is way way way smoother. The offside drive shaft was installed at the same time and that is absolutely fine so this one that caused the problem was an anomaly. So when the swap is completed I'll pop the new one straight away.

9th June 2011, 20:33

these driveshafts are crap, i bought sum and put them in just before fast car show (the night before) and they went on the way to the show the long shaft outer joint total exploded did bout 80mile on it straight run down the m1, then the short 1 went bout 2 weeks later, then finally got the replacements 4 weeks later!!!!! then put the replacement 1's on the night before dynodaze and they went on the way again down to that, only 30miles this time, same shaft and same cv joint, the second time the cage blow up and the ball bearings hit a car behind, not clever at all, he say's there must be something wrong with me car lol good customer service ay, had no problem with the standard shafts before the TRS 1's went in and put the standard driveshafts back in for the track at french car show and they were fine, the long 1 has had the bearing welded on as it broke and spat out the shaft that why i got the uprated 1 in the first place, and they have long out lasted the uprated 1's and been on the track, uprated my arse

9th June 2011, 20:50

pop. That does sound like a car specific fault to be fair. very similar shafts (maybe the same as they are from a supplier) are used all over the continent in rally cars, and are respected. especially the f1 set. How low is your car running?

10th June 2011, 19:19

Yep loads of people have them including me and they are excellent. If your car is chewin up shafts that quick that's your issue lol might be showing up an issue as they are uprated with less play in the joints to absorb faults

As for the OP - those vids are weird! Possibly a manufacturing fault, hopefully Chris sorts you out a replacement asap

14th June 2011, 12:01

na it not my car at all, after the first set went me m8 from evolution tuning industries rang him and told him wat happened and guess wat he said........... ya i knew they were not right they never had enough grease and poor quality grease at the time they made that batch lol joke

14th June 2011, 15:31

Well either way, it looks as though it won't be getting replaced after all as TRS have stopped trading

gutted - more for TRS than my driveshaft. Hey ho.

Anyone know who the original supplier of the driveshaft was?

14th June 2011, 16:27

Ive messaged back sayer

I can supply these shafts and MAY be able to help on warranties for trs but im not sure yet

14th June 2011, 16:37

did you manage to compare the dodgy shaft to a good one?
the reason i say that is i had a car come too me doing the same and when i compared it to a replacement the splines where fractionally longer than the replacement, (a genuine one i had.) you dont have an atb do you?? the tip of the shaft wasnt hitting the cross pin of the diff??