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Author Subject: Drive shafts getting f**ked
niw

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Location: Frederiksberg

Registered: 30 Jan 2012

Posts: 73

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Post #1
Anyone have any experience about how much you can lower your 306 gti with KW v2 suspension without messing up the driveshafts?

I tried to lower it like 60mm with about 15 mm left on the coilover but that broke my driveshafts and made the car shake.

I tried to lift the car 10mm but it still seems to shake once in a while, when not giving full gas under 2000 rpm.

It may be something else, but I think it might still be the same issue?

The thing is that I got my driveshafts changed to brand new ones because the car was shaking when giving gas, so I thought that would help, but after I had the new ones installed, the car was still shaking and on my way to the ring on the autobahn, both driveshafts died and the grease from them were all over the place Sad
Posted 14th Sep 2012 at 11:05
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

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Post #2
were they cheap remanufactured items?

tbh even stupid lowering should work fine in theory with standard shafts, after all they are designed to work when the suspension compresses over bumps, though obviously if you run them at extreme angles constantly they will wear out quicker than standard height.

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Posted 14th Sep 2012 at 11:53
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niw

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Location: Frederiksberg

Registered: 30 Jan 2012

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Post #3
No they were brand new original ones ... have brand new ones on again now, but might be something else?

Yeah I never had trouble with lowering any of my cars like hell, but just heard someone tell me you could maybe lower it too much ?
Posted 14th Sep 2012 at 12:00
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jonnie205

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Location: Bicester

Registered: 10 Apr 2005

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Post #4
lowering wont make any differnece to shafts, if anything it makes them run straighter. You must have a problem elsewhere
Posted 14th Sep 2012 at 12:19
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niw

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Location: Frederiksberg

Registered: 30 Jan 2012

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Post #5
Yeah, but what could it be? Sad everything in the front is new Sad
Posted 14th Sep 2012 at 12:30
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phillipm

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Location: Rotherham

Registered: 15 Oct 2006

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Post #6
You have left the bumpstops on the coilovers, yes?

If not it's pretty easy to run out of plunge travel....

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Posted 14th Sep 2012 at 12:35
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jonnie205

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Post #7
the shaft should have plenty of plunge surely? its only lowered likewise if the std strut was at full bump
Posted 14th Sep 2012 at 12:38
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phillipm

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Post #8
Well, not if the bumpstops aren't there!

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Posted 14th Sep 2012 at 12:41
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niw

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Post #9
I will check it out, im no mechanic myself Sad
Posted 14th Sep 2012 at 12:45
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

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Post #10
I have the KW V2 kit on my car and run it at 40mm lower than standard height with no issues at all. Yes

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Posted 14th Sep 2012 at 13:03
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phillipm

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Location: Rotherham

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Post #11
What condition are the engine mounts in?

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Posted 14th Sep 2012 at 13:09
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niw

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Location: Frederiksberg

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Post #12
Stan: I could try to raise it more, running 50mm lower atm, 60mm before.

They seem fine the engine mounts, its powerflex the bottom one and the others are spoox.
Posted 14th Sep 2012 at 13:13
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welshpug!

Capt Pedantic

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Post #13
I see what Phill is thinking, excessive lateral movement on the mounts when the shafts are at full plunger will wear them out.

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Bring on the Trumpets.

Posted 14th Sep 2012 at 13:14
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niw

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Post #14
Ok guys, I will get the engine mounts and bumpstops checked, thanks.
Posted 14th Sep 2012 at 13:16
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coskev

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Location: Oswestry

Registered: 01 Nov 2009

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Post #15
jonnie205 wrote:
lowering wont make any differnece to shafts, if anything it makes them run straighter. You must have a problem elsewhere


Makes a difference for sure when too low.

The shafts run up hill from gearbox to hubs when the car is sat stationary,so when the car dips the shafts do pass there max plunge point and eat the jointsYes

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Posted 14th Sep 2012 at 22:36
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mattgti6phase2

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Location: inside my 6 abusing the tarmac!!

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Post #16
been -60mm for 2 years now and no driveshaft problems. As said above get everything checked. Is the drivers side driveshaft secured in the bottom engine mount housing properly??? This would cause massive movement for sure Yes

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5 x a 306 owner!
currently abusing type r's in a town near you ™ Wink
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midweek madness Tee hee
Posted 14th Sep 2012 at 23:02
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jonnie205

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Post #17
the shaft should have plunge at full droop and full bump, i cant see how it makes any difference what the rideheight is set at. The shaft deflects both ways. I have seen on the fiesta challenge cars when on downhill tarmac stages, the engine will move about an inch laterally and this can bottom out a shaft
Posted 14th Sep 2012 at 23:19
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buzzbrightyear

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Post #18
stan_306gti6 wrote:
I have the KW V2 kit on my car and run it at 40mm lower than standard height with no issues at all. Yes


i bet the only issue with your driveshfts is dust settling on them Smile

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Posted 15th Sep 2012 at 00:21
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phillipm

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Post #19
They're probably slowly sagging into a banana shape from metal creep.

________________________________________

- Bespoke rollcages/additions/adjustments. Half cages right up to complete custom spaceframes - MSA/FIA spec, CDS, ROPT, T45, etc - PM me
Email me!
Custom-made polybushes available - need an odd size or fitment? - anything from batch work to one-off pieces.
Posted 15th Sep 2012 at 00:29
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buzzbrightyear

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Post #20
i heard that the windscreen was thicker at the bottom than the top due to the sand settling over time

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andrew315rawson@live.co.uk
Moonstone phase 7 gti6
My Project thread: http://www.306gti6.com/forum/showthread.php?id=119992&page=1
Posted 15th Sep 2012 at 01:09
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coskev

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Location: Oswestry

Registered: 01 Nov 2009

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Post #21
mattgti6phase2 wrote:
been -60mm for 2 years now and no driveshaft problems. As said above get everything checked. Is the drivers side driveshaft secured in the bottom engine mount housing properly??? This would cause massive movement for sure Yes


-60mm on standard design dampers?

Perhaps its the lack of bumpstops on some coilovers.Dunno

The Hdi I've seen eat the pass side shaft twice now is on cheap looking coilovers,and lower than -60mm looking at itRoll eyes

________________________________________

Red GTB1756 powered Fabia VRS daily driver,LBSC Gti6 eater........

Mac1 ZR R1 kit car build in progress.
Posted 15th Sep 2012 at 08:26
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welshpug!

Capt Pedantic

Location: Bigend, Wales.

Registered: 27 Mar 2007

Posts: 25,817

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Post #22
Wrong balljoints? Hmm

________________________________________

need a part number? get on here - http://public.servicebox.peugeot.com

Bring on the Trumpets.

Posted 15th Sep 2012 at 08:47
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ian7675

Techno Viking

Location: Gloucestershire

Registered: 12 Oct 2007

Posts: 6,068

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Post #23
buzzbrightyear wrote:
i heard that the windscreen was thicker at the bottom than the top due to the sand settling over time


Laugh my ass off

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Less than 24 hours to go!
Posted 15th Sep 2012 at 09:12
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stan_306gti6 Forum Admin

Location: Kent

Registered: 18 Jan 2004

Posts: 21,768

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Post #24
buzzbrightyear wrote:
stan_306gti6 wrote:
I have the KW V2 kit on my car and run it at 40mm lower than standard height with no issues at all. Yes


i bet the only issue with your driveshfts is dust settling on them Smile


Nope, no dust on them. LOL

I roll the car forward and back in the garage once a week so everything gets moved and I also turn the engine over by hand every fortnight so it sits in a different place. I do look after it whilst it's sat there in storage. Smile

________________________________________

"Supercharged - 454.1bhp/317.5lb/ft"
Peugeot 306 GTi-6
2000 (X), Moonstone Love
Posted 15th Sep 2012 at 09:49
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mattgti6phase2

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Location: inside my 6 abusing the tarmac!!

Registered: 16 Jul 2010

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Post #25
coskev wrote:
-60mm on standard design dampers?


AP racing coilovers on mine with rear shocks to match. I had a shake once with a driveshaft but that was only due to a split inner CV boot.

________________________________________

Team Nile 6 Superman
Team: 40.2 MPG Smile
5 x a 306 owner!
currently abusing type r's in a town near you ™ Wink
I truely live for the 306 ®
Build date: 29th October 1997 Wednesday's car
midweek madness Tee hee
Posted 16th Sep 2012 at 13:38
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