Adjustable topmounts, recommendations please?
Formerly turbotwoshoes
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Rennlist Member
Joined: Mar 2010
Posts: 850
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From: Russellville, Arkansas
Rennline...... you gotta love their build quality!
Nordschleife Master
Joined: Jul 2007
Posts: 5,613
Likes: 52
From: DFW, TX
When/if I drop the $$$, I'll likely go Rennline.
It's also what Singer runs, because "these are prototype pieces" lol off-the-shelf from Rennline.com.
The Rennline pieces are suppose to be modeled after the OEM RS top mounts.
It's also what Singer runs, because "these are prototype pieces" lol off-the-shelf from Rennline.com.
The Rennline pieces are suppose to be modeled after the OEM RS top mounts.
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Joined: Dec 2001
Posts: 455
Likes: 11
From: UK
I have a pair of Rennline top mounts that are unused - they were missing the camber plates when we opened the packaging but I couldn't do anything about it since I'd purchased them over a year ago. Willing to sell these as Rennline can supply the plates separately.
Nordschleife Master
Joined: Jul 2007
Posts: 5,613
Likes: 52
From: DFW, TX
You can using the play at the base of the strut/wheel carrier attachment point. I maxed at -1.8.
These camber plate top mounts also remove rubber from the suspension, making handling more direct.
From what I've been told by people smarter than me is that running a strut bar w/ OEM rubber top mounts is not beneficial to handling since the rubber in the mount will yield and loads are never actually transferred to the base of the mount and strut bar attachment points.
These camber plate top mounts also remove rubber from the suspension, making handling more direct.
From what I've been told by people smarter than me is that running a strut bar w/ OEM rubber top mounts is not beneficial to handling since the rubber in the mount will yield and loads are never actually transferred to the base of the mount and strut bar attachment points.
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Three Wheelin'
Joined: Feb 2003
Posts: 1,782
Likes: 109
From: Cambridge/Boston, MA
FYI- The Rennline camber plates and rear monoball shock mounts will raise the ride height about 20mm. These bits are also not very friendly unless you're running a coilover system (PSS9/10, KW, etc.), and they still may require extra parts.
How much camber are you after?
How much camber are you after?
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Joined: Nov 2013
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From: Charlotte, NC
Can you explain why this is the case as I can't quite get a picture of this in my mind? Thanks
Three Wheelin'
Joined: Feb 2003
Posts: 1,782
Likes: 109
From: Cambridge/Boston, MA
Going to be a tough one to describe-
Imagine putting a spacer between your rubber shock/strut mount and the shock/strut tower that it bolts to. That spacer will cause the ride height to increase. That is, essentially, what the monoballs are doing to the height.
Depending on how much ride height adjustability is left on the spring perch, you might be able to account for the extra height by spinning the collars down. But you have to make sure that the strut/shock piston doesn't run out of bump travel because the piston rod will be sitting further into the body of the strut/shock. In which case, you would need a shorter body.
This is why RS struts/shocks are shorter, and why you can't put RS shock/spring package on without also using monoballs. You could, but you would be about RS-20mm ride height.
This is the mystery that I'm trying to figure out- it looks like KW and PSS9/10 don't have enough adjustability to reach RS height with monoballs installed. At least, not without compromising bump travel and getting into the bump stops. I still haven't determined if that is 100% the case or not- I need some shock/strut measurements!
Imagine putting a spacer between your rubber shock/strut mount and the shock/strut tower that it bolts to. That spacer will cause the ride height to increase. That is, essentially, what the monoballs are doing to the height.
Depending on how much ride height adjustability is left on the spring perch, you might be able to account for the extra height by spinning the collars down. But you have to make sure that the strut/shock piston doesn't run out of bump travel because the piston rod will be sitting further into the body of the strut/shock. In which case, you would need a shorter body.
This is why RS struts/shocks are shorter, and why you can't put RS shock/spring package on without also using monoballs. You could, but you would be about RS-20mm ride height.
This is the mystery that I'm trying to figure out- it looks like KW and PSS9/10 don't have enough adjustability to reach RS height with monoballs installed. At least, not without compromising bump travel and getting into the bump stops. I still haven't determined if that is 100% the case or not- I need some shock/strut measurements!
Instructor
Joined: Apr 2010
Posts: 131
Likes: 1
From: Escondido, CA
http://forums.pelicanparts.com/porsc...pension-2.html
I used 993 RS factory camber plates (not that big $$$ btw compared to aftermarket). There's lots of pics and dimensions in that post.
Couple of side notes:
1. yes monobals rise your car. Now I have almost no pretension on pss9 springs on 964RS height.
2. You won't get much extra camber with any sort of camber plates on narrow body 964. Upper mounts already installed inwards - see pics below. 993 longitudinals will extend front wheelbase by about 1/2in - that alone adds about 1deg of camber.
Oleg.
Rennlist Member
Joined: Sep 2007
Posts: 532
Likes: 71
From: Southern Indiana
I've had Stomski Racing solid upper mounts installed for the last 6ish years with PSS10's with great results. Beautiful parts and great service from Steven Stomski. He actually fabricated a solid early 964 rear upper mount (89-91) using my stock rear upper mount as a template for no extra $!