Phase 7

[Don Plumley]

Keep them coming!

[Bill Verburg]

The parts from Smart Racing don't include instructions
They are not all the same, the front pair has larger holes than the rear pair, silvered ones go on top, black on the bottom, you will also need some large washers(like fender washers) for the bottom. I purchased some grade 8 plated, washers ~3mm thick, hopefully that will do it.

Separating the A arm ball joints was a bitc*

[Bill Verburg]

Out w/ the old


In w/ the new




The upper half of a sidemount



Here's the large washers installed


Next gotcha, the oem sidemounts bolts are flanged M12x120 1.5 gr 10.9, the solid mounts need flanged M12x85-90 1.5 gr 10.9

[Bill Verburg]

The KT arm bolts are 90mm and work for the side mounts

900.067.323.09 M12x1.5x90 gr10.9, unflanged
or
999.074.054.09 M12x1.5x85 gr 10.9, flanged

originals were
999.072.003.09 M12x1.5x110 gr10.9, flanged

[Bill Verburg]

Fini,



here's the rubber mounts that were replaced


now for the front

[Bill Verburg]

The last piece of the puzzle,
RS spec sport rubber bushes for the front A arms, actually better than RS because both ends are stiffer.

[Don Plumley]

Nice. Can't wait for the road report. That is, once you can find your roads...

[Bill Verburg]

Originally Posted by Don Plumley

Nice. Can't wait for the road report. That is, once you can find your roads...

Yeah, 2pm high today is 19F, w/ 6" of new powder, they're getting hammered to the east on top of the 4' they got last week.

[LARRY SHARP]

I am glad to see that elephant has those bushings for our cars.. I will soon put them in my car when I get the chance..

Bill did they havea plan for rear bushings for 964's as well?

[Tom W]

It's in the 60's here and the rain finally stopped. The Turtle goes out in 2 weeks for 3 days at Sears Point.

Larry: You can talk to Rich at Jerry Woods/Smart Racing about the bits you need.

[LARRY SHARP]

Tom I had already talked to Rich and he says to run mono balls on the rear.. But my car is more of a street car and I wanted to stay with rubber bushings if I could ..Stiffer ones would be perfect for my case . Just like these front ones.. RS prices are way high at the moment

[Bill Verburg]

9M has sport rubber 964 rear bushes
read this

[Chuck Moreland]

If I'm reading that link right, the 9M bushings are polyurethane?

If there is interest in a rubber bushing replacement 964/965 rear suspension, we'll take a look into producing a product. We would do this in a "sport" hardness rubber, similar to our front control arm bushings Bill pictured above.

Is there interest in rubber replacements for the 964/965 rear suspension (trailing arm and strut)? Are people finding these bushings in need of replacement?

[Bill Verburg]

Originally Posted by Chuck Moreland

If I'm reading that link right, the 9M bushings are polyurethane?

If there is interest in a rubber bushing replacement 964/965 rear suspension, we'll take a look into producing a product. We would do this in a "sport" hardness rubber, similar to our front control arm bushings Bill pictured above.

Is there interest in rubber replacements for the 964/965 rear suspension (trailing arm and strut)? Are people finding these bushings in need of replacement?

Not the way i read it. Colin offered

As a result of the 9mRS build program we are now looking into making alternative bushes for the the stock 964 arms. Two bush kits are proposed:
a) Equivalent stiffness to RS, which ultimately may be acceptable as an alternative to the RS arm for racing.
b) Hard version for track use offering some compliance for occasional road use.

There is a definite interest in 993 replacement side bushes as pictured above and 993 arm bushes.

As I look at the bushes removed from my car they needed to be replaced anyway. They are all cracked and spongy. I suspect that all orf these cars will need to be rebushed sooner rather than later.

[Bill Verburg]

Just FYI, the rubber bushes I took off were showing signs of deterioration, here are the worst 2,

camber arms

[LARRY SHARP]

Bill I am sure mine will look as bad when I pull them out..Rubber doesnt hold up well after 15 years..

[Chuck Moreland]

Originally Posted by Bill Verburg

Not the way i read it.

I could be wrong, but on page 3 of that thread it says this:

"Yup, glad you asked. The second version of the bushes should be with me next week and we have a customer's track car in the shop which is likely to be the testmule for them. As soon as TT reports back positively we can bring them to market. In the end we decided to incorporate a self-lubricating bearing into the design as an all-poly bush would probably suffer from premature wear due to the loadings. Stage 2 will be to experiment with bush stiffness once the design has been proven. "

That doesn't sound like a rubber bushing.

then in response to your question on page 7 about the hardness of the rubber, he answers:

"Sorry Bill but I do not have an equivalvent Shore number for the Poly bushes although I can tell you that we only stock the stiffer material option which is proving to be near ideal for mixed fast road, trackday and racing use. "

Isn't he saying he doesn't know the hardness of his Poly bushing?

[Bill Verburg]

Chuck, You may be right. If so all the C1 guys that were interested are going to be very disappointed. The C2s in F can use monoballs or poly, the C1 Cup/RS guys are restricted to stock rubber w/ the dual large 3mm washers. Geoffrey was pushing for a PCA aceptable rubber replacement bush.

[38D]

Originally Posted by Bill Verburg

Chuck, You may be right. If so all the C1 guys that were interested are going to be very disappointed. The C2s in F can use monoballs or poly, the C1 Cup/RS guys are restricted to stock rubber w/ the dual large 3mm washers. Geoffrey was pushing for a PCA aceptable rubber replacement bush.

The GTC1 rules for 2009 will allow for monoballs. The 964 RSs in H have always been allowed monoballs. A 964 RS can't run in C1...only Euro and USA cups.


Btw Bill, have you replace the front bushing yet? I just did this and it is a real pain in the rear. I learned a couple of tricks along the way that make it far easier, if you need some help.

[Bill Verburg]

Originally Posted by 38D

The GTC1 rules for 2009 will allow for monoballs. The 964 RSs in H have always been allowed monoballs. A 964 RS can't run in C1...only Euro and USA cups.

So I see, I always thought it was strange that a car in a street class could legally do suspension mods that a pure race class wasn't allowed.

Originally Posted by 38D

Btw Bill, have you replace the front bushing yet? I just did this and it is a real pain in the rear. I learned a couple of tricks along the way that make it far easier, if you need some help.

The weather's been too nice for the past week, I've been goofing off. Always interested in good advice.

Took a look at Gert's solid rear kit today, he supplies all the bolts and washers w/ the kit. sigh