Engine mount bush choice

Incastone · 29th June 2017, 10:46

Didn't take long to diagnose this part failure, don't think it had ever been changed, the inner metal cylinder just fell out..

So with the same amount of swearing as prescribed by the other accounts I read, I managed to fit a Powerflex by hand, which has solved all the relevant issues, but now I have this vibration at idle which pretty much exists in every car make that has one of these fitted.

The bolts were tightened to correct torque.

Is there any way to eliminate the vibrations when idling or should I just refit a new OEM one?

HarryM1BYT · 29th June 2017, 10:56

Quote:

Originally Posted by Incastone

Didn't take long to diagnose this part failure, don't think it had ever been changed, the inner metal cylinder just fell out..

So with the same amount of swearing as prescribed by the other accounts I read, I managed to fit a Powerflex by hand, which has solved all the relevant issues, but now I have this vibration at idle which pretty much exists in every car make that has one of these fitted.

The bolts were tightened to correct torque.

Is there any way to eliminate the vibrations when idling or should I just refit a new OEM one?

The extra vibration is part of using the stiffer Powerflex bush. I instead modified a Mondeo (MkII I think, but look it up) bush, which has had no such issues at all and is still fine 5 years on.

My original Rover item was just beginning to split and rather than have it fail I replaced it with the Mondeo item.

EastPete · 29th June 2017, 11:00

Go for an OEM one - the Powerflex is very good at restricting engine movement, and gives crisp gear changes but does transmit more vibration into the cabin, based on my experiences. You should be able to get a genuine OEM for the diesel (with the letter T stamped on it) for 40-50 pounds. Try e-car parts in Sandy (they are on e-bay).

Pete

HarryM1BYT · 29th June 2017, 11:08

Quote:

Originally Posted by EastPete

Go for an OEM one - the Powerflex is very good at restricting engine movement, and gives crisp gear changes but does transmit more vibration into the cabin, based on my experiences. You should be able to get a genuine OEM for the diesel (with the letter T stamped on it) for 40-50 pounds. Try e-car parts in Sandy (they are on e-bay).

Pete

The OEM item is designed to allow some movement initially, but tightens up the more torque is applied to it, the Powerflex it taught all the way thus it transfers more vibration at tickover where there is little engine movement.

chris75 · 29th June 2017, 11:14

The Powerflex is smooth as silk on my v6 , no problems at all , but I have often heard it does transmit vibration on the diesels

I think there are two versions available , one for petrol types and one for diesels .

Heddy · 29th June 2017, 11:38

https://the75andztclub.co.uk/forum/s...d.php?t=269607

mininuts · 29th June 2017, 11:51

Both bushes on my diesel mount are Powerflex.......no vibration issues at all

I bought mine second hand and it came from another diesel. I do believe that the bushes are different for the diesel and I assume that mine are the diesel specific ones.
Vastly improved the gear change feel, although my original big bush was pretty much like yours

Geoff130 · 29th June 2017, 12:03

Caused vibration at idle on my 1.8, wish I had read more about them first. They worked great on the suspension.

Incastone · 29th June 2017, 17:01

I made sure I got the diesel specific one.
I've had a full day with it now and to be honest, it's so much nicer to drive, and the vibration at idle has calmed down, easily liveable with.

Thanks for the input, I will still investigate the Mondeo one for the future, thanks.

Arctic · 29th June 2017, 22:22

Quote:

Originally Posted by Incastone

I made sure I got the diesel specific one.
I've had a full day with it now and to be honest, it's so much nicer to drive, and the vibration at idle has calmed down, easily liveable with.

Thanks for the input, I will still investigate the Mondeo one for the future, thanks.

Hi Matt.
I note you say you got the power flex for the diesel which would be the Yellow one with the three slots yes, a little tip if you still have the old mount use the centre from it to replace the full metal insert that came with the powerflex mount.

The original metal centre as a nylon insert this helps with the vibration, all you need to do is skin it of it's old rubber and it will fit great into the powerflex mount.

The Jag mount also fits with a bit of modification

29th June 2017, 10:46	#1
Incastone Avid contributor MG ZT+ CDTi, 2003, HFF. Join Date: Jun 2017 Location: London Posts: 118 Thanks: 11 Thanked 23 Times in 14 Posts	Engine mount bush choice Didn't take long to diagnose this part failure, don't think it had ever been changed, the inner metal cylinder just fell out.. So with the same amount of swearing as prescribed by the other accounts I read, I managed to fit a Powerflex by hand, which has solved all the relevant issues, but now I have this vibration at idle which pretty much exists in every car make that has one of these fitted. The bolts were tightened to correct torque. Is there any way to eliminate the vibrations when idling or should I just refit a new OEM one?

29th June 2017, 11:14	#5
chris75 same car since 2005 2001 Rover 75 2.0 v6 Connoisseur Saloon Join Date: Nov 2006 Location: Ellesmere Port , Cheshire Posts: 3,811 Thanks: 379 Thanked 549 Times in 466 Posts	The Powerflex is smooth as silk on my v6 , no problems at all , but I have often heard it does transmit vibration on the diesels I think there are two versions available , one for petrol types and one for diesels . __________________ Who said it was simples ? Last edited by chris75; 29th June 2017 at 11:18..

29th June 2017, 11:51	#7
mininuts This is my second home Cooper S 210 Join Date: May 2012 Location: Port William Posts: 5,309 Thanks: 5,098 Thanked 2,406 Times in 1,631 Posts	Both bushes on my diesel mount are Powerflex.......no vibration issues at all I bought mine second hand and it came from another diesel. I do believe that the bushes are different for the diesel and I assume that mine are the diesel specific ones. Vastly improved the gear change feel, although my original big bush was pretty much like yours __________________ *Paul* 2016 MINI Cooper S 210 : 2000 Rover 75 CDT Classic SE : 2009 Freelander 2 GS : 2000 Mini Cooper Sport : 1986 Mini Mayfair : 1980 Mini Pickup : 1971 Mini Cooper S

29th June 2017, 11:00	#3
EastPete Posted a thing or two Rover 75 CDTi Classic saloon, MGB GT, Skoda Yeti Join Date: Aug 2008 Location: Ramsey, Cambs Posts: 1,874 Thanks: 626 Thanked 635 Times in 430 Posts	Go for an OEM one - the Powerflex is very good at restricting engine movement, and gives crisp gear changes but does transmit more vibration into the cabin, based on my experiences. You should be able to get a genuine OEM for the diesel (with the letter T stamped on it) for 40-50 pounds. Try e-car parts in Sandy (they are on e-bay). Pete

29th June 2017, 11:38	#6
Heddy This is my second home None Join Date: Feb 2013 Location: None Posts: 5,556 Thanks: 465 Thanked 1,161 Times in 924 Posts	https://the75andztclub.co.uk/forum/s...d.php?t=269607

29th June 2017, 12:03	#8
Geoff130 Loves to post MG ZT 190, Rover 75 CDTi, Honda VFR 750, Honda CB550F Join Date: Aug 2010 Location: Derby Posts: 393 Thanks: 75 Thanked 36 Times in 28 Posts	Caused vibration at idle on my 1.8, wish I had read more about them first. They worked great on the suspension.

29th June 2017, 17:01	#9
Incastone Avid contributor MG ZT+ CDTi, 2003, HFF. Join Date: Jun 2017 Location: London Posts: 118 Thanks: 11 Thanked 23 Times in 14 Posts	I made sure I got the diesel specific one. I've had a full day with it now and to be honest, it's so much nicer to drive, and the vibration at idle has calmed down, easily liveable with. Thanks for the input, I will still investigate the Mondeo one for the future, thanks.