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Old 03-02-2016, 07:30 AM   #1
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GT3 2-Piece Control Arm Dimensions

Hi Everybody,

Can anyone ho is handy with a set of calipers help me by providing the accurate dimensions that are missing on the attached PDF?

Any help is greatly appreciated.: cheers:

Thank you,

Piper
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File Type: pdf Dimensions Needed.pdf (423.4 KB, 76 views)
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Old 03-02-2016, 02:05 PM   #2
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Can do this for you tomorrow
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Old 03-06-2016, 08:47 AM   #3
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Can do this for you tomorrow
Jimk04, that is very kind of you. I am eagerly awaiting your response.

Piper.
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Old 03-09-2016, 08:42 AM   #4
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Piper, apologies, my 'tomorrow' became a week!

Studs are M8 on as good as 28mm centres, maybe 28.25.

Standard M8 thread pitch whatever it is , it isnt fine.

Studs project out 40mm, or atleast that is a nice figure. The pair I measured were 39 ish.

I only have a GT3 Cup bushing here to measure, so the other dim you need...centre of bushing to flat face..isnt really what you want for road car control arms.

I measure 55.0mm, and from some measurements against a standard (non adjustable arm), I would think this is atleast 10mm more that the regular street GT3 adjstable arm.

To concur this and also that Porsche used the same casting for street and race, ans just machined more off the street versions...the holes in the Cup bushings for the M8 are 27.5mm deep yet the stud ony inserts 13.5mm....so the hole is deep enough for the street version when more metal from the face is removed.......hope that made sense.

I include a photo here to show you the Cup inner bushing versus the street....I had both version to hand a while ago....not now unfortunately.



ignore the shim...check how much ally is in the cup bush compared with the street
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Old 03-09-2016, 08:44 AM   #5
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I also have dims and part numbers for the FAG bearing that Porsche MOtorsport used on their inner bush on the RSR, and for the misalignment washer/spacer
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Old 03-09-2016, 08:49 AM   #6
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This will interest you.....telescopic arm

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Old 03-10-2016, 07:08 AM   #7
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Jimko4,

Thank you very much for all of the information! I really appreciate it.

I would love to have the FAG bearing number for the inner bushing, would you mind posting it or PM me with it?

I have seen that telescopic LCA design before and really like it, I am debating whether or not to go that route or something with a similar concept....what do you think, would it be more desirable than the shim type? I think it would be a much nicer set up and easy to adjust while on the alignment rack.

Again, thank you for all of your help.

Piper
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Old 03-10-2016, 01:37 PM   #8
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Inner bearing....I was wrong...it is a fluro bearing not FAG.
GXSW18.35MS
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Old 03-11-2016, 07:28 AM   #9
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Originally Posted by jimk04 View Post
Inner bearing....I was wrong...it is a fluro bearing not FAG.
GXSW18.35MS
Thank you!
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Old 03-18-2016, 09:10 AM   #10
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38mm.....centre of Bush to machined face. ....996 version
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Old 03-18-2016, 09:37 AM   #11
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38mm.....centre of Bush to machined face. ....996 version
Thank you so much jimk04
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Old 03-21-2016, 12:14 PM   #12
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I am still working on my adjustable lower control arm design. In the meantime, please check out my Bump Steer correction tie rod ends. More goodies to follow!

http://986forum.com/forums/boxster-parts-sale-wanted/60905-fs-drop-link-outer-tie-rods.html

Piper
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