Porsche 911UK Forum

Welcome to the @Porsche911UK website. Register a free account today to become a member! Sign up is quick and easy, then you can view, participate in topics and posts across the site that covers all things Porsche.

Already registered and looking to recovery your account, select 'login in' and then the 'forget your password' option.

Just replaced my engine mounts- WOW!

That was the original ones Mark. Both infrasilver & I trimmed ours down and there's no different NVH than the saggy bush I originally had. Powerflex have since redesigned there's after they read us two had an issue with the vibration.
 
Evenin' Alex,

Yeah I know they're better now but I just can't get away with them.
I've driven two cars with them. One of the cars is Craig's which went -

Standard - fine
to
Powerflex original - Hilariously bad
to
Powerflex revised (sent out for free thanks to you consulting with P-flex).

The later ones are better but his car is still awful on the overrun. The whole thing buzzes like crazy. He's getting them removed during the cars service in the spring.

Don't get me wrong I've run track cars with semi-solid and solid engine and box mounts but I just don't want that on a road car. The pros don't outweigh the cons for me.

But like I say one man's buzzy horror story is another man's "just right". No right or wrong. I just always post a bit of balance. :thumb:
 
I must admit - Chris & I cut a lot more away on ours than the new design powerflex, to the point we left an air gap at the top. Maybe what we have is more in line with a new bush rather than powerflex's new design. I did try and tell them that at the time but it fell on deaf ears. :dont know:

ps. Evening Mark :thumb:
 
infrasilver's bush shaving tactics:

(of which I copied)

36297047886_50d918e971.jpg
 
Yes there must definitely still be a difference even between the revised ones and yours then.
Craig's revised one is better than the first, but as I say, it's just a step too far for a car that will never see any track time. :thumb:
 
What annoyed me was the HUGE buzz between 4k-3k rpm when engine breaking. Was more loke sound barrier braking. Don't have any of that now with it all trimmed back but car does feel as solid as when the inserts were full fat stock.
 
That's exactly the main issue still. Back off the throttle at high revs and the whole shell and interior go beserk. :grin:
 
I'll fit the mounts first and see if that solves my problems. If things are still a bit sloppy i'll fit the Proflex insert. Having only had the clutch replaced 6 months ago though I'd have thought the garage would have flagged if the gearbox mount was shot but you dont know.
 
Would expect a good Porsche specialist to point it out and possibly OPC but doubt many others would.
 
Or does Demort already have one... and if not, why not
 
Ghianightmare said:
You don't need to drop the box to replace the original bush. AGA tools in the USA have a tool that does it in situ. Costs $300...

Group buy anyone?

http://www.agatools.com/part/porsche-transmission-parts/porsche-transmission-mount-tool

:floor:

Good luck with that, first taking the old one out with the corrosion going on between the two metals, and then putting the new one in. I was smacking it with a big hammer after grinding a bevel on the leading edge of the bush.

Much much easier to cut the old bush out and fit the new with the box on the floor.
 
:grin: :yeah:
 
Mine have just arrived and there is a wider flange than I'd thought (been there before!) should I trim it down a bit more?

Also what is NVH 😊
 

New Threads

Forum statistics

Threads
124,351
Messages
1,439,435
Members
48,707
Latest member
race911turbo
Back
Top