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Vorshlag FAQ Camber Plate perches: OEM to Coilover conversion

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  • Vorshlag FAQ Camber Plate perches: OEM to Coilover conversion

    Vorshlag has been making camber plates Since 2005 and by 2022 we have 22 distinct car model versions we cover, with more coming every year.



    One of the key features of our design, beyond the massive and durable stainless steel spherical bearing we use, is the included upper spring perch with a sealed radial bearing that comes with every one of our designs.



    We don't make a "street" and "race" version - all our camber plates are capable of both, with long lasting components, easy adjustment, and SILENT use for a decade or more between rebuilds. To make sure the spring your suspension uses fits our upper perches we machine these in various sizes and styles. The OEM versions we make cover most of the camber plates we support.



    As the images above and below show, our OEM style upper perches take a LOT more material than our 3 coilover sizes, which is part of why the OEM spring perch option adds more cost. In some cases the OEM style perch takes 6x more material and 3x longer to machine.



    We also make upper perches for the three predominant coilover spring sizes: 2.25", 60mm and 2.5" internal diameters. We use two different heights of radial bearings in these. The shorter single row bearing is 5mm shorter and recommended for race applications where every inch of bump travel is needed.



    MODULAR DESIGN VS SOME HEIGHT CONSTRAINTS

    We have tried to make all of our camber plate designs modular, to be able to convert from OEM sized spring to various coilover springs. And on most variants that is as easy as swapping perches.




    There are currently five new car models we make plates for that have a critical height constraint - the factory top mount and spring perch are VERY short. For these models we have had to make unique versions of the camber plate design to fit within these stock confines, otherwise we will raise the front ride height.



    On these factory setups where we are trying to make a camber plate work with the stock springs and not raise or lower the car even 1 mm, we have to do like the OEMs and make our radial bearing upper perches FIXED to the spherical bearing holder. The shaft can still articulate but the spring "bends" with suspension travel - again, just like the OEM piece.



    These short height OEM style perches can be found on these models:
    • BMW F22/F30, F80, G20/30, G80
    • F56 Mini
    • A90 Supra
    • Subaru FRS/Toyota BRZ
    • S550 Mustang

    Unlike the majority of our modular camber plates, these handful of "super thin stack up" OEM versions have a large diameter radial bearing pressed into the perch and around the spherical bearing holder. These cannot easily be modified to work with coilovers... it can be done but it takes more parts and work than normal. Not just a "perch swap"...



    This image below shows an F2/F3/F8X BMW camber plate setup for use with coilover perches... and the different spherical bearing holder and radial bearing needed for OEM spring use on these cars.



    On these "short height" models, the follow parts need to be changed to convert from OEM to coilover:



    The least expensive way to convert one of these five Vorshlag "low height" camber plate designs from OEM to coilover springs, is to not do that. It would cost $200 or more in parts. Instead we recommend putting your OEM camber plates up for sale at 75-80% of our current retail price. These OEM designs are the fastest selling versions of these plates, and usually sell used on social media groups and model-specific forums very quickly. Then you only have to spend a tiny bit to buy all new camber plates made for your new coilover setup. It seems illogical, but on these five models that is the lowest cost route.



    We wish the car makers didn't try to make their top mounts so short, so we wouldn't have to do this. This "non-modular" change was simply necessary for these new models, and it has worked well for many years of use. Call us for more details and costs if you really want to convert one of those designs and we will try to talk you out of it on the phone, too!

    Thanks.
    Last edited by Fair!; 08-11-2022, 09:46 AM.
    Terry Fair - www.vorshlag.com
    2018 GT / S550 Dev + 2013 FR-S / 86 Dev + 2011 GT / S197 Dev + C4 Corvette Dev
    EVO X Dev + 2007 Z06 / C6 Dev + BMW E46 Dev + C5 Corvette Dev

  • #2
    These short height OEM style perches can be found on these models:

    BMW F22/F30, F80, G20/30, G80
    F56 Mini
    A90 Supra
    Subaru FRS/Toyota BRZ
    S550 Mustang

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