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Want to improve your handling, read this!
- Thread starter chowgar
- Start date
keendean said:NLW73 said:
Do you need a fitting kit too? New bolts and washers?
To answer my own question, the kit includes the lot and is 125+ VAT and delivery.
it comes as a kit with the extended bolts etc.
I paid £125 cash as went to collect so no vat and postage.
scarletboarder
Monza
- Joined
- 4 Aug 2016
- Messages
- 210
scarletboarder
Monza
- Joined
- 4 Aug 2016
- Messages
- 210
I finally fitted the £125 design 911 ones. Nice easy job. While both the exhausts are the same height now they seem lower overall. The old mount were in a right state!!
scarletboarder
Monza
- Joined
- 4 Aug 2016
- Messages
- 210
Hi
I know these are not 997's but I have RS mounts in my 993 and they are great. No real NVH to speak of, and I have modified standard mounts (bottom void filled with 65 hardness polyurethane) in my 986 and the NVH is actually unacceptable at idle. The vibrations permeate right through the car even to the steering. And that is with a standard front mount.
Going too hard, especially if you do all 3 mounts in a road car is a bad idea. Apparently it can activate the knock sensors on the engine also.
Berni
I know these are not 997's but I have RS mounts in my 993 and they are great. No real NVH to speak of, and I have modified standard mounts (bottom void filled with 65 hardness polyurethane) in my 986 and the NVH is actually unacceptable at idle. The vibrations permeate right through the car even to the steering. And that is with a standard front mount.
Going too hard, especially if you do all 3 mounts in a road car is a bad idea. Apparently it can activate the knock sensors on the engine also.
Berni
IMI A
Paul Ricard
- Joined
- 2 Aug 2014
- Messages
- 3,371
Thefinn said:
I can see copies of 993/964 RS engine mounts for £125 + VAT
The genuine 993/964 RS engine mounts are £500 + VAT on the same website?
https://type911shop.co.uk/epages/de...ca1-377e-432e-84fd-bdccf2206766/Products/2400
Anyone know where to find genuine Porsche ones for less than £600?
Also to the more mechanically minded is a geo not recommended straight after replacing engine mounts?
Like many on this thread I fitted the RSS semi solid mounts, initially there was some extra noise and vibration, can't say that I noticed any harshness.
As others have stated the RSS mounts settle down and all N+V all but disappeared, everything felt tighter - the feel of the engine - the way the power was put down, it gives the car, imo, the GT feel which is what I wanted.
Today I picked up mine from my OPC after having belt and tensioners replaced and fitting the orange function first transmission mounts. The technician initially recommend that as I was replacing the engine mounts with semi solid ones then I should replace the OEM transmission mount with a new mount as this was now the weakest link in the setup, engine nice and tight on its mounts but the gearbox mount will take all the extra strain and after so many years of use it won't last too long.
First day of driving and my take on the NVH after RSS semi solid engine and FF transmission mounts:
Noise: No real noticeable increase in noise, I have Gundo hacked mufflers so it's not quiet.
At idle, windows closed, ac & stereo off; measured dB was at 66.4, which equates to a quiet street noise;
At a steady 70ish mph, 5th gear 3000 rpm, dB was at 74.7, which equates to a normal conversation level, I've attached the dB meter snap shot. Can't say that it would be difficult to hold a normal conversation and the music wasn't really drowned out by any noise increase.
Vibration: A definite increase.
At idle you can feel the rumble in the seat, there was no rattling inside of the car, but I can say that the rattling noise that I used to get from the passenger seat has disappeared, go figure :?
At 70 mph there is also an increase, this is due to the rpm, from 2800-3200rpm is where you can feel it most, is it too much? - not for me, it makes the car feel like a sports car, I know Porsche tried to reduce extra NVH but I like it, as I said, it is akin to a GT, it's how you would expect a GT car to feel. The noise would probably bother me if I had to do a long run of say 500 miles plus - but I think that is true of any performance car to be honest,
Harshness:
Well, for me it's not harsh, I've driven much harsher cars, but the car now feels more visceral, raw and the way it accelerates is day and night.
With the tip box there was always a lag in the way it would change up, even while driving it in manual mode and using the flappy paddles, this is all but eliminated. The clunk I used to get sometimes changing down has also gone.
Now if you bought your P car to be a sports cruiser then I would stay away from doing the semi solid engine mounts and the transmission mount inserts. With semi solid engine mounts and a new OEM transmission mount my car would have had no induced NVH.
I will update to see if the transmission mount settles at all, as I got the softest mount.
As others have stated the RSS mounts settle down and all N+V all but disappeared, everything felt tighter - the feel of the engine - the way the power was put down, it gives the car, imo, the GT feel which is what I wanted.
Today I picked up mine from my OPC after having belt and tensioners replaced and fitting the orange function first transmission mounts. The technician initially recommend that as I was replacing the engine mounts with semi solid ones then I should replace the OEM transmission mount with a new mount as this was now the weakest link in the setup, engine nice and tight on its mounts but the gearbox mount will take all the extra strain and after so many years of use it won't last too long.
First day of driving and my take on the NVH after RSS semi solid engine and FF transmission mounts:
Noise: No real noticeable increase in noise, I have Gundo hacked mufflers so it's not quiet.
At idle, windows closed, ac & stereo off; measured dB was at 66.4, which equates to a quiet street noise;
At a steady 70ish mph, 5th gear 3000 rpm, dB was at 74.7, which equates to a normal conversation level, I've attached the dB meter snap shot. Can't say that it would be difficult to hold a normal conversation and the music wasn't really drowned out by any noise increase.
Vibration: A definite increase.
At idle you can feel the rumble in the seat, there was no rattling inside of the car, but I can say that the rattling noise that I used to get from the passenger seat has disappeared, go figure :?
At 70 mph there is also an increase, this is due to the rpm, from 2800-3200rpm is where you can feel it most, is it too much? - not for me, it makes the car feel like a sports car, I know Porsche tried to reduce extra NVH but I like it, as I said, it is akin to a GT, it's how you would expect a GT car to feel. The noise would probably bother me if I had to do a long run of say 500 miles plus - but I think that is true of any performance car to be honest,
Harshness:
Well, for me it's not harsh, I've driven much harsher cars, but the car now feels more visceral, raw and the way it accelerates is day and night.
With the tip box there was always a lag in the way it would change up, even while driving it in manual mode and using the flappy paddles, this is all but eliminated. The clunk I used to get sometimes changing down has also gone.
Now if you bought your P car to be a sports cruiser then I would stay away from doing the semi solid engine mounts and the transmission mount inserts. With semi solid engine mounts and a new OEM transmission mount my car would have had no induced NVH.
I will update to see if the transmission mount settles at all, as I got the softest mount.
Attachments
This a fair point.nikos525 said:
Also IMI A is right with pricing. Type911 lists it as an aftermarket RS mount for £125+vat.
From memory, I paid around £500- £600 on the RS mounts for another car last year.
Just wondering if the softer offerings from Rennline, Planet-9 or RSS would give the same result about for half the price.
scarletboarder
Monza
- Joined
- 4 Aug 2016
- Messages
- 210
I've just fitted the £125 type911 RS mounts and went for a drive yesterday for the 1st time.
There's definitely some vibration through the steering wheel and cabin that wasn't there before. When the car is under load from about 1700-2300RPM. I have to say as above it makes the car feel more sporty but will see how I get on with it. The handling seems much tighter. The old mounts were shot and the car was quite unsteady at higher speeds over poor roads and bumps. I haven't given it a proper hard drive as it was pouring here yesterday. More to follow. Also having the gundo hack I can't detect any more noise.
I am wondering if I should replace the transmission mount now though :?:
There's definitely some vibration through the steering wheel and cabin that wasn't there before. When the car is under load from about 1700-2300RPM. I have to say as above it makes the car feel more sporty but will see how I get on with it. The handling seems much tighter. The old mounts were shot and the car was quite unsteady at higher speeds over poor roads and bumps. I haven't given it a proper hard drive as it was pouring here yesterday. More to follow. Also having the gundo hack I can't detect any more noise.
I am wondering if I should replace the transmission mount now though :?:
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