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Bilsteins/Eibachs, red calipers, drilled rotors on the GTS

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Old 05-28-2010 | 04:17 PM
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Originally Posted by JWise
Yes they are. It's apparent we have two different types of Eibach springs. Mine say 928INT.FRT and have a part number 113045 (Rears say 928INT.RR with part number 113245)

Adjustment nut is unchanged from the previously posted "built" photo.
IIRC those are the same markings my Eibachs have.

I definately recall the 928INT markings.
Old 05-28-2010 | 04:19 PM
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Chuck:

That PN cross-references with an EARLY (TOO LONG) spring. It's in PET but not as a used part, but Google shows it at Parts Atlanta as an early spring (928 343 511 04). Where did you get this?
Old 05-28-2010 | 04:24 PM
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Originally Posted by Bill Ball
Chuck:

That PN mates up with an EARLY (TOO LONG) spring.
Thanks Bill. Perhaps I'll get enough drop with the nut flipped for things to work out...... If not? I'm done and SITM will be out for this year....
Old 05-28-2010 | 04:33 PM
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Originally Posted by Chuck Z
Thanks Bill. Perhaps I'll get enough drop with the nut flipped for things to work out...... If not? I'm done and SITM will be out for this year....
Bring the Panamera!!!!!
Old 05-28-2010 | 04:35 PM
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All of the discussion about upside down nuts got me to crawl under my GT in wonderment.
Since there's a gap between the lower perch and the nut (indicating that the collar of the nut is seated into the perch) are my nuts right?
..let me clarify: are the adjustment nuts properly oriented?
pic would help:
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Old 05-28-2010 | 04:37 PM
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Its a 5:1 RATIO. so, 1" of shock and spring movement will be near 5" of ride height.

mk

Originally Posted by Chuck Z
First: The adjuster nut threads are NOT in the collar they are directly behind the adjusting groves.

Second: by flipping the adjuster nut over I gain an addition 1.5" lower to start with - that should translate to ~3" in ride height correct?

Third: the adjuster nut seats nicely on the perch (or the other way around....) and still has room to adjust the height.

I'm goin for it.......
Old 05-28-2010 | 04:42 PM
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Originally Posted by mark kibort
Its a 5:1 RATIO. so, 1" of shock and spring movement will be near 5" of ride height.
mk
If that's the case, you should get plenty of drop by flipping the nut, right? I guess we'll see....

Originally Posted by Bill Ball
Chuck:
That PN cross-references with an EARLY (TOO LONG) spring. It's in PET but not as a used part. but Google shows it at Parts Atlanta as an early spring (928 343 511 04). Where did you get this?
Could that Porsche spring be a design specifically for Boge's - or shocks that don't have the collar on the adjusting nut that the Bilsteins have?
Old 05-28-2010 | 05:10 PM
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Originally Posted by JWise
So, reading back through the thread, it appears MY adjustment nuts are upside down.

I can attest this does make adjustment more difficult, as the spring perch overhangs much of the nut. Adjustment must be made in small increments with the spanner wrench being frequently re-positioned.
before you are set on pulling and flipping the nut I would double check where the bottom edge of the nut is relative to the stop on the shock body.

I would have to say that I think the design intent was to have the thin collar ride against the lower spring purch. This would give the best access to the adjuster nut with the tool, and it would also minimize the amount of torque transfered to the lower spring purch since the contact diameter is at is smallest. But as in Chuck Z's case the inverted nut may be necessary due to spring length.

If the current installed height of the adjuster is similar to the pic you posted I do not believe you will be able to achieve current ride height if you flip the nut. ride height is based on the position of the lower spring purch along the shock body. the nut rides against the same location at the botom of the spring purch regardless which way it is facing, and since the nut is a defined height the lower edge of the nut will be at the same location for a given ride height no matter the orientation. So look at your shock and if the top of the nut stop is visible below the lower edge of the nut you could sucessfully flip the nut, but if the stop is recessed up inside the nut to any extent flippin the nut will not allow you to achieve the current ride height.
Old 05-28-2010 | 09:02 PM
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Well, I'm done flipping the adjuster nuts on both sides. I conferred with DR at the mid point of the job and he confrimed that the nut is now oriented the correct way for this setup. Ultimately, the nut could only be screwed down to a point b/c the spring perch comes in contact with the threads on the shock and you don't want that so when it made contact I backed it off a 1/2 turn then put it together. B/c of that, I'm not hopeful I gained as much as I originally thought. We're getting storms right now so looks like tomorrow b/f I'll be able to road test and settle things out a bit.

......Hacker - it might be the Panny this year
Old 05-28-2010 | 09:15 PM
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I'm confused by the upside down info guys. Its obvious that Porsche intended that the adjuster have the smaller diameter at the top and the notched area at the bottom. Why are people changing this?
Old 05-28-2010 | 09:51 PM
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CS front spring part number should be 928 343 511 12.
Old 05-28-2010 | 10:19 PM
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Originally Posted by Chuck Z
Well, I'm done flipping the adjuster nuts on both sides. I conferred with DR at the mid point of the job and he confrimed that the nut is now oriented the correct way for this setup.
What "setup" is this? Wish DR would clarify. Must be the spring you have is longer than the "usual" Eibach spring. You saw the pics of the Eibach setup Jon has and the adjuster is the more common orientation. Oh, well. Enjoy SITM.
Old 05-28-2010 | 10:23 PM
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Originally Posted by Bill Ball
What "setup" is this? Wish DR would clarify. Must be the spring you have is longer than the "usual" Eibach spring. You saw the pics of the Eibach setup Jon has and the adjuster is the more common orientation. Oh, well. Enjoy SITM.
I plan to drive the car tomorrow morning and see how much it settles. If it doesn't settle enough I'm going to order the "other" Eibach springs, ship them overnight, flip the adjuster, set the ride height and be done with it........ I'm growing very tired of this project as it has eaten up a BUNCH of my vacation time and I'm not cut out for all this manual labor at one time!
Old 05-29-2010 | 12:17 AM
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Yeah, Chuck, this is definitely a pain.
Old 05-29-2010 | 01:13 AM
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I hope the rest goes smoothly for you so you can enjoy SITM

good luck and have one for me


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