Bilstein b8 on a 964

[Porscher]

Hi everybody
I'm about to buy new shocks for my 964 c2, I have found a nice deal on a pair of Bilstein B8. I read in some of the threads that poeple say they fit 964. But where thay sell them it's always for 993 or 964 turbo.

Can anybody clear this up for me? Do Bilstein B8 nürburgring tested fit the 964 C2?

Regards

[911 SLANT]

Deepened if you are wanting to run stock height or lowering it.

[Porscher]

So they do fit. Yes I'd like to lower the car but anywhere I look it says they fit only 993 or 964 turbo. I thought i saw somewhere that they should for 964 c2 but now I can't find it again.

[Noah930]

The 964 group on Rennlist is more active than the one here. There's a thread from maybe Oct 2021 about "best suspension for a street car" or something like that, if you do a search there.

[emac911]

B8 are for lowered cars, B6 for normal ride height cars. Otherwise the same shock.

https://www.bilstein-shocks.co.uk/blogs/news/whats-the-difference-between-bilstein-b6-and-bilstein-b8

[Porscher]

Originally Posted by emac911

B8 are for lowered cars, B6 for normal ride height cars. Otherwise the same shock.

https://www.bilstein-shocks.co.uk/blogs/news/whats-the-difference-between-bilstein-b6-and-bilstein-b8

Tnx for info, thats good news cause then they will fit. But then its strange it says they just fit the 993.

[ian c2]

993 has different fastener sizes .
Can be made to fit quite easily by using a reducer washer , but the sellers you’ve seen do it right and differentiate between 964 & 993 .
Many manufacturers say fits both 964&993 which is incorrect from a like-for-like bolt strait on perspective.

[Porscher]

Originally Posted by ian c2

993 has different fastener sizes .
Can be made to fit quite easily by using a reducer washer , but the sellers you’ve seen do it right and differentiate between 964 & 993 .
Many manufacturers say fits both 964&993 which is incorrect from a like-for-like bolt strait on perspective.

Ok many tnx for the info. Could you point me in the right direction? Google didnt seem to help me.

[Bill Verburg]

Originally Posted by Porscher

Hi everybody
I'm about to buy new shocks for my 964 c2, I have found a nice deal on a pair of Bilstein B8. I read in some of the threads that poeple say they fit 964. But where thay sell them it's always for 993 or 964 turbo.

Can anybody clear this up for me? Do Bilstein B8 nürburgring tested fit the 964 C2?

Regards

These B8s will fit the 964 too

Part Number:*35-195276 Part Number:*35-195283
Series: B8 (SP) Series: B8 (SP)
Position: Front Left* Position: Front Right*
Descriptor: 20mm lower ride height Descriptor: 20mm lower ride height

as noted above the 964 uses 2x M12 bolts per side to connect to the wheel carriers.

993 uses 2x M12 and 2x M14

note that these are 20mm shorter than b8 and are more appropriate for lowered cars.

[Porscher]

Originally Posted by Bill Verburg

These B8s will fit the 964 too

Part Number:*35-195276 Part Number:*35-195283
Series: B8 (SP) Series: B8 (SP)
Position: Front Left* Position: Front Right*
Descriptor: 20mm lower ride height Descriptor: 20mm lower ride height

as noted above the 964 uses 2x M12 bolts per side to connect to the wheel carriers.

993 uses 2x M12 and 2x M14

note that these are 20mm shorter than b8 and are more appropriate for lowered cars.

Tnx Bill, highly appreciated. Does this means they will fit but I need new bolts or can I just use the 2 I have? and some reduce washers then? Information online otherwise than here is surprisingly scarce.

at least one new bolt and enlarge the wheel carrier hole if its a 964 c2 wheel carrier, the 964 used individual nuts , the 993 use a single M12/14 captive nut assembly, I don't think that makes any difference though, 964 RS and t already use the 14mm bottom bolt

[ian c2]

Reducing washers would be my choice over drilling out the cast 964 carrier .
Iirc kw started including the washers when people first called them out on the V-range marketed as 964/993 when the first came out and wouldn’t fit 964 .
They might sell them as a separate item , or other suspension companies might .
I think I also remember rebel or rennline selling them .
If not , they shouldn’t be too hard to get made at a local machine shop .
Let us know what you find out .

[Porscher]

Tnx guys, I'll see if I can get them washers. Otherwise drilling I guess. But thats a precision work for a machine shop I'm presuming.
This is the Bilstein B8 35-195283 i have, the holes are sligthly bigger as were pointed out here.

[Porscher]

Ok I think I see what you mean now. The upper bolt is a M12 and the lower is a M14. So it's either a reducer washer on the lower or drill the carrier out.
As I mentioned before thats sounds like nothing you do by your self with a handdrill, or is it doable?

[ian c2]

You could get the carriers machined , but I would want to have them crack tested .
Much easier to make a reducing bush/washer like on the top hole in this pic .
14mm on the outside , 12mm on the inside , and length the same as strut mounting .

[ian c2]

I just had a quick look around on my phone and it looks like kw now include them and they’re shown in the install instructions .
This pic should give you a better idea of what I’m talking about

[Porscher]

Originally Posted by ian c2

I just had a quick look around on my phone and it looks like kw now include them and they’re shown in the install instructions .
This pic should give you a better idea of what I’m talking about

Tnx Ian, that shock look spectacular👌

[Porscher]

I think I will give KW a call. Tnx

[Porscher]

Picking up this thread again.
No problem fitting the shocks with the reducer spacers but they sit fairly high.They were suppose to lower the car, is it the lighter weight of the 964 that makes it stay high? Any ideas? I've adjusted the shocks to lowest settings.

[Bill Verburg]

Originally Posted by Porscher

Picking up this thread again.
No problem fitting the shocks with the reducer spacers but they sit fairly high.They were suppose to lower the car, is it the lighter weight of the 964 that makes it stay high? Any ideas? I've adjusted the shocks to lowest settings.

Shorter shocks allow the car to be lowered but it's the springs and perch heights that determine actual ride height.

[Porscher]

Originally Posted by Bill Verburg

Shorter shocks allow the car to be lowered but it's the springs and perch heights that determine actual ride height.

Yeah, and probably the weight difference between t he 993 and 964 is bigger than I thought. I put on B8 but they seem to be too firm. Anybody know for a fact that is tha case?