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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHGT3 2-Piece Control Arm Dimensions - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Leading reported evidence
Use on their inner bush
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
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Performed · outcome unconfirmed
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
GT3 2-Piece Control Arm Dimensions - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Leading evidence: 'Use on their inner bush' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Adjust while' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion · Original poster
I think it would be a much nicer set up and easy to adjust while on the alignment rack.
GT3 2-Piece Control Arm Dimensions - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Use same casting
Suggestion or failed attempt
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
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Suggestion
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.
GT3 2-Piece Control Arm Dimensions - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Use on their inner bush
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
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
GT3 2-Piece Control Arm Dimensions - 986 Forum - The Community for Porsche Boxster & Cayman Owners
Use same casting
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
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.
GT3 2-Piece Control Arm Dimensions - 986 Forum - The Community for Porsche Boxster & Cayman Owners
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Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
12 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
986Forum: 1 discussions
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Generation: 20261026T200546Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
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
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
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
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
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
This is a source reference. Confirm exact model applicability in the original material.
