Advice on 993 GT2 Arms

[KelvWKK]

Hi Gentlemen,
Hope to reach out for advise.
I have a 964 C4, that had the rear undercarriage and gearbox, converted to a 993 C2.
However the front arms and knuckle is still on a 964 C4.

My rear control arms (upper & lower) have given way & due for replacement.
My plans are to convert all the arms & knuckle to the original Porsche 993 GT2 (non aftermarket).

Hope to seek advice, if anyone have done this & how to find the original Porsche part numbers.
I tried to find the catalogue online, but it does not show GT2.

Thank you in advance.

[KelvWKK]

I am hoping to replace all parts to 993 GT2, and wondering, what are the parts to complete that.
Unless my research is not wrong, it should these parts?

All else are similar, between a standard 993 and the GT2?

[KelvWKK]

Or could I seek the help of any kind gentlemen who have a original 993 GT2 (to share with me in private), some chassis code details.
I’m hoping to request my parts stockist, to order based on that reference.

Thank you in advance.

[Kein_Ersatz]

Left you a PM for a PDF - GT2_Parts_Section_4_front_axle_&_steering.

You may also try rennlist forums (993, racing, cup) for more input on such a project. Once in awhile, someone will post for sale a converted 911/964 to a 993 GT2/EVO that was used in club racing that may have taken the same journey you are embarking on.

[KelvWKK]

Thanks a lot Kein.
Truly appreciate it!

[Bill Verburg]

993GT2 street version used 993RS suspension
the specific parts that are different from stock 993 are
front A arm bushes,
front wheel carriers
rear A arm bushes
rear KT arm
rear eccentric adjusters

the 993RS/Gt2 parts are bolt on for 964 front but you will need to change the brake calipers and rotors to 993 as well, then you need matching rear brake calipers and rotors and a 993 m/c unless you have a 964C4
if you have 993 rear suspension then the 2 rear arms and eccentrics should be bolt on as well

[KelvWKK]

Originally Posted by Bill Verburg

993GT2 street version used 993RS suspension
the specific parts that are different from stock 993 are
front A arm bushes,
front wheel carriers
rear A arm bushes
rear KT arm
rear eccentric adjusters

the 993RS/Gt2 parts are bolt on for 964 front but you will need to change the brake calipers and rotors to 993 as well, then you need matching rear brake calipers and rotors and a 993 m/c unless you have a 964C4
if you have 993 rear suspension then the 2 rear arms and eccentrics should be bolt on as well

Thank you Bill, for your kind information.
Can I confirm the below, as the correct understanding?

All parts are similar: Except for the below (between a standard 993 and the GT2).

Front:
(1) GT2 A arm bushes: Can’t find the PN.
(2) GT2/RS Wheel Carriers (AKA Knuckles): 993 341 157 81 (L) & 993 341 158 81 (R).
(3) GT2 wishbone (Arm): 993 341 017 82 (L) & 993 341 018 82 (R).
(4) GT2 Side Member (Arm Bracket): 993 341 111 21 (L) & 993 341 112 21 (R).
(5) Brake Calipers and Rotors: Need to change to 993 (993RS/Gt2 parts are bolt on for 964 front).

[KelvWKK]

Rear:
(1) GT2 A arm bushes: Can’t find the PN.
(2) GT2 KT arm (AKA Control Arm): 993 331 045 70 (Qty x2).
(3) GT2 eccentric adjusters (AKA Eccentric Screws): 993 331 217 80 (Qty 2).
(4) GT2 eccentric washers: 993 331 219 80 (Qty 2).
(5) GT2 Side Section (AKA Sub Frame): 993 331 051 80 (L) & 993 331 052 80 (R) <- Are there differences between Base 993 vs GT2/RS?
(6) GT2 wishbone: 993 331 041 81 (L) & 993 331 042 (R).
(7) Brake Calipers and Rotors: Need to change to 993 m/c (unless you have a 964C4).
(8) Installation (rear arm): If you have 993 rear suspension, the 2 Rear Arms and Eccentric Adjusters, should be bolt on.




Thank you very much once again, Bill & Kein.
If I missed out anything or incorrect, please do advise.
I worry I may have missed out some parts or added unnecessary parts.

[Bill Verburg]

993 RS/gt 2 front

I'd just replace the existing bushes w/ sport rubber bushes from Elephant Racing
RS & Gt2 used stiffer bushes only on the trailing leg, Id' do all 4


correct
GT2/RS Wheel Carriers (AKA Knuckles): 993 341 157 81 (L) & 993 341 158 81 (R).

these may bee NLA, if so BBI has equivalent parts

You'll also want the tie rods and new bearings

993RS/gt2 outer are different from stock as seen here
lower are 993RS/GT2 outer and 993 RSR inner


993.347.081.80R GT2 steering arms outer + inner w/ monoball NLA


993RS/Gt2 outer and inner
993.347.031.81

to get the monoball inners you need to contact Rebel Racing , which you will want to do anyway since the 964 steering rack being different from 993 changes the required length of the tie rod assembly, Rebel has the correct RS outer and a 964 compatible inner



993RS/Gt2 brakes f& r
993 351 045 10 /L Front rotor
993 351 046 10 /R Front rotor
993 352 045 00 /L rear rotor
993 352 046 00 /R rear rotor
993.351.425.10 /L front caliper
993.351.426.10 /R front caliper
999.067.042.09 M12x1.5x75mm caliper bolts x4
993.352.425.80 /L rear caliper
993.352.426.80 /R rear caliper
900.378.068.09 M12x1.5 x38mm caliper bolts x4


993RS/Gt2 rear
993.341.017.80 993RS A arm /L x1
993.341.018.80 993RS A arm /R x1

or 993RSR w/ monoball
993.331.041.80 A arm /L RSR w/ mono-ball
993.331.042.80 A arm /L RSR w/ mono-ball


you could just replace the bushes on the trailing leg w/ the stiffer rubber but w/ a new arm you get new ball joints and a new front leg bush too.