Js racing roll center adjusters vs peers
#21
Former Moderator
How do i tell if the rear is too stiff on roll?
#22
OP, helpisfinallyherealbeitratherslowly,
Here we go, Hardrace vs. OEM:
The height of the OEM body is 18mm from where it bottoms out in the knuckle to the bottom* of the contact surface, and 23mm to where the boot starts.
*Obviously the ball joints are upside down in these pictures.
TheHardrace body is 33mm from where it bottoms out to the locking ring.
The Hardrace spacer is 15mm tall, which makes sense as 18+15=33.
Here is a comparison of the OEM on the left, and the included Hardrace castle nuts.
People have been having issues with their cotter pins missing the slots in the Hardrace castle nut entirely.
At least in the rear, the thread pitch and hardware size is the same, so using the OEM castle nut might be an easy fix.
If you are really low, keep in mind that for a given ride height, the roll center adjusters will increase your suspension travel, I don't know if the extra 5mm The J's offer over the Hardrace is worth it for you.
Also each post on the different brands of ball joint will settle into the lower arm at slightly different heights.
I went with the J's 12mm in the rear of my S2000, seems great, I love how my car drives on track, never bottoms out, but I have Tein SRC and they're a pretty short shock.
Here's some pics installed and other perhaps pertinent stuff:
J's vs. Hardrace new in baggies.
J's 12mm rears installed.
Fronts installed.
Hope it all makes sense and helps.
Dylan
Here we go, Hardrace vs. OEM:
The height of the OEM body is 18mm from where it bottoms out in the knuckle to the bottom* of the contact surface, and 23mm to where the boot starts.
*Obviously the ball joints are upside down in these pictures.
TheHardrace body is 33mm from where it bottoms out to the locking ring.
The Hardrace spacer is 15mm tall, which makes sense as 18+15=33.
Here is a comparison of the OEM on the left, and the included Hardrace castle nuts.
People have been having issues with their cotter pins missing the slots in the Hardrace castle nut entirely.
At least in the rear, the thread pitch and hardware size is the same, so using the OEM castle nut might be an easy fix.
If you are really low, keep in mind that for a given ride height, the roll center adjusters will increase your suspension travel, I don't know if the extra 5mm The J's offer over the Hardrace is worth it for you.
Also each post on the different brands of ball joint will settle into the lower arm at slightly different heights.
I went with the J's 12mm in the rear of my S2000, seems great, I love how my car drives on track, never bottoms out, but I have Tein SRC and they're a pretty short shock.
Here's some pics installed and other perhaps pertinent stuff:
J's vs. Hardrace new in baggies.
J's 12mm rears installed.
Fronts installed.
Hope it all makes sense and helps.
Dylan
helpslows2k - please update us once you get your j's RCA installed.
#23
I don't think I'd be able to tell the difference between them as far as driving feel, I just felt that the J's was a nicer piece of kit, and that's what I wanted on my car at the time.
The HardRace rears are going on another car here shortly.
The HardRace rears are going on another car here shortly.
#25
Former Moderator
#27
If you decide to run the RCA (for increased travel or RC adjustment) make sure you have adjustable tie rods and toe links. When having the car aligned, take it to a shop that has a bump steer gauge. Changing the relative arc between the lower control arm and the tie rod/toe link, may introduce a bit of bump steer that you will want to dial out.
Cheers
-Antonov
Cheers
-Antonov
#29
And another question for this ancient thread. Do the current J's S2 camber adjuster include roll center correction like the old ones did?
The title of the page seems to indicate that but the package doesn't include longer bolts.
J'S RACING Front camber joint w/ roll center S2 - J'S RACING USA
The title of the page seems to indicate that but the package doesn't include longer bolts.
J'S RACING Front camber joint w/ roll center S2 - J'S RACING USA
#30
And another question for this ancient thread. Do the current J's S2 camber adjuster include roll center correction like the old ones did?
The title of the page seems to indicate that but the package doesn't include longer bolts.
J'S RACING Front camber joint w/ roll center S2 - J'S RACING USA
The title of the page seems to indicate that but the package doesn't include longer bolts.
J'S RACING Front camber joint w/ roll center S2 - J'S RACING USA
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tunerplayground
California - Bay Area S2000 Owners
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07-15-2013 07:31 PM