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J STOCK springs are BACK!!!!!!!!!

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  • pauliecarzz
    replied
    IMO Coilovers don't dance well with these cars. I've had negative results with them so You made the right decision with the J-stocks!

    Leave a comment:


  • JCGus
    replied
    Yeah I saw those KW....that's SUPER handy to have the ability to replace the M3 struts with brand new kit....may leave that for version 4 of the car....great tip on those motorsport dampers, saves a lot of hassle. The car is the UK so easy enough

    Leave a comment:


  • proctor750
    replied
    I like how after I install everything KW comes out with a bolt on coilover with their own hub/strut (no hacking required). OH well, I am loving the J-stock setup!

    https://www.bimmerworld.com/KW-Coilo...-352200DB.html

    Leave a comment:


  • mwagner10702
    replied
    Originally posted by JCGus View Post
    Very glad these finally got back into production - who would have thought! Springs and Front Dampers ordered from Turner...the general consensus seems to be the Bilstein Motorsport shock is the way to go for the rear rather than getting existing Bilstein's revalved...thank you internet. Pity it's not inverted, but no biggie
    You will want part number 24-000642. You won't find them in the states. I got mine here:

    https://www.bilstein-shocks.co.uk/pr...9a6a7aa3&_ss=r

    The compression number is higher than the original J-Stock dampers that Turner sold. Rebound is the same.

    Leave a comment:


  • JCGus
    replied
    Very glad these finally got back into production - who would have thought! Springs and Front Dampers ordered from Turner...the general consensus seems to be the Bilstein Motorsport shock is the way to go for the rear rather than getting existing Bilstein's revalved...thank you internet. Pity it's not inverted, but no biggie

    Leave a comment:


  • proctor750
    commented on 's reply
    PM Yahweh, he may still be in for a set if only for the rears...

  • mlytle
    replied
    I am gonna guess that was part in the problem. The Billy DAMPER was too long for spring allowing inside rear wheel to move uncontrolled.

    Leave a comment:


  • kevnj
    replied
    Mlytle the Koni DAMPENERS, 8041 1289SPGC are ~ 1 inch shorter than the Billsteins. I didn't get a chance to drive the dampeners in dampening conditions .

    Leave a comment:


  • mlytle
    replied
    Originally posted by kevnj View Post
    Quick update. I have since installed Koni "Race" SA's from Ground Control and the dampening is perfect. Gonna get the Bilstein Sports re-valved properly to J-Stock specs and sell them if anyone is interested.
    was the extended length of the koni the same as the billy?

    ps - it is "damping" not "dampening"....unless you mean you were getting them wet driving through puddles....

    Leave a comment:


  • kevnj
    replied
    Quick update. I have since installed Koni "Race" SA's from Ground Control and the dampening is perfect. Gonna get the Bilstein Sports re-valved properly to J-Stock specs and sell them if anyone is interested.

    Leave a comment:


  • mwagner10702
    replied
    Originally posted by Yahweh View Post
    What about the B46-1720 in b8 from?
    Does Bilstein make such a version? Looks like it is a B6 variant. Assuming the length is the same as the B46-1720, the 33-187563 would still need to be revalved, unless it has the crimped housing.

    Regarding the "period correct" thing, if you look in the BMW Motorsport Gruppe N catalog for the E30 M3 you will find the Bilstein 24-000642 (BMW part number is 33 52 2 222 588) so it is very period correct. Plus your 33-187563 would not be period correct in any event.

    Leave a comment:


  • Yahweh
    replied
    What about the B46-1720 in b8 from?

    IE
    F4-BE5-H341-H0 or 33-187563

    Leave a comment:


  • Yahweh
    commented on 's reply
    Hoping to keep inverted per a nice "period" correct Kit.

    Small differences add up.

    E350 with Quigley 4x4 used to run the B46-1720 damper re valved up front until the same issue. Looks like now people run FOX shocks..

    GC does have an inverted koni, unless you have a P/N... GC wont sell it individually, as described its for their true coil over rear "kit"
    Maybe the inverted koni is a monotube and would match the front better..

    The 24-000642 Group N sounds like the only entry level bilstein option, and also not the 200/125 valving. Which optimally makes this a great package.
    Unfortunately doesn't check the inverted box, which is optional....

  • mwagner10702
    replied
    Originally posted by Yahweh View Post
    Inverted Shorten'd Koni?

    Maybe the substitute for the rear Bilstein.

    I have a set of the Jstock Bilstein fronts from turners recent mystery set, Looking for Inverted rears to match..
    No inverted and shortened Koni that I am aware of. IMO the inverted rear shock is overrated for street or light track. Even if you are a serious racer I'd doubt you could tell the difference between an inverted rear and a non-inverted rear. The unsprung weight loss is minimal.

    Assuming you are using the J-Stock springs, I would get the Bilstein Motorsports rears (24-000642). They are correct for that spring length. The valving is 200/200. The rear J-Stock rear springs are 7" long. If you are using a shorter spring than that just go with the Ground Control Konis. They have a shorter overall length and are intended to be used with a shorter spring.

    If you must have an inverted rear, find an early set of the Bilstein B46-1720 with an H0 suffix. These shock housings are not crimped. The most current production B46-1720 shocks have a crimped housing and cannot be revalved. See post #308.

    Leave a comment:


  • Yahweh
    replied
    Inverted Shorten'd Koni?

    Maybe the substitute for the rear Bilstein.

    I have a set of the Jstock Bilstein fronts from turners recent mystery set, Looking for Inverted rears to match..

    Leave a comment:

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