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  Topic: brake upgrade on 931 Carrera GT
kondzi

Replies: 10
Views: 1440

PostForum: Performance Upgrades   Posted: Thu Jul 20, 2023 9:33 pm   Subject: brake upgrade on 931 Carrera GT
Cedric don't be that pragmatic, give a little fun to us
  Topic: brake upgrade on 931 Carrera GT
kondzi

Replies: 10
Views: 1440

PostForum: Performance Upgrades   Posted: Wed Jul 19, 2023 8:23 pm   Subject: brake upgrade on 931 Carrera GT
Hi stan911.
It looks like a very nice car to drive

Regarding brakes, rear 944T fits nicely, P'N'P.
You need the early 951 rotor though.

What I did for my 931 is front calipers from 997 C4S ...
  Topic: Need some help for porting the intake port in 964
kondzi

Replies: 52
Views: 5933

PostForum: Performance Upgrades   Posted: Wed Jul 19, 2023 7:58 am   Subject: Need some help for porting the intake port in 964
Guys I discovered something nice today
I was resurfacing the heads on my lathe, and after that, cleaning the heads to prepare them for assembly in some time. As I was paying attention to get ...
  Topic: Need some help for porting the intake port in 964
kondzi

Replies: 52
Views: 5933

PostForum: Performance Upgrades   Posted: Sun Jul 16, 2023 5:34 am   Subject: Need some help for porting the intake port in 964
Thanks Ciprian, what I’m afraid is the courier losing the package
Currently I can live without the scan. I got the STP file though. But I only have a viewer. Can this step file be converted to s ...
  Topic: Love for the unloved - 924 Build in Oz
kondzi

Replies: 21
Views: 4874

PostForum: Performance Upgrades   Posted: Wed Jul 12, 2023 6:39 pm   Subject: Love for the unloved - 924 Build in Oz
Keep us posted, keep the work going'
  Topic: Accuspark ignition on 77 NA 924
kondzi

Replies: 1
Views: 2987

PostForum: General Discussions   Posted: Wed Jul 12, 2023 6:38 pm   Subject: Accuspark ignition on 77 NA 924
Ballast resistor is just a wire with resistance, don't look for a regular resistor

What I would do, I'd just put a new wire from the fuse box, or anywhere else close in the engine bay (+12V whe ...
  Topic: Need some help for porting the intake port in 964
kondzi

Replies: 52
Views: 5933

PostForum: Performance Upgrades   Posted: Wed Jul 12, 2023 6:34 pm   Subject: Need some help for porting the intake port in 964
Would be nice to scan these in 3D and try to arrange one on the other in CAD software to see where the differences are. Unfortunately I don't have access to a 3D scanner and none anywhere nearby comme ...
  Topic: Need some help for porting the intake port in 964
kondzi

Replies: 52
Views: 5933

PostForum: Performance Upgrades   Posted: Tue Jul 11, 2023 4:13 am   Subject: Need some help for porting the intake port in 964
I did take the mold of the CNC'ed port.

From top to down:
- stock
- hand ported
- CNC ported

Don't be mislead by the camera lens.These are all same in diameter in general.

http://forums.pe ...
  Topic: Bending my own brake lines
kondzi

Replies: 2
Views: 3262

PostForum: General Discussions   Posted: Sun Jun 25, 2023 7:04 am   Subject: Bending my own brake lines
Good tools make your life easier. Buy some more material and practise a bit.
I did change in my 931 the awkward X setup (left front / right rear and vice versa) to a regular front and rear setup, fol ...
  Topic: Need some help for porting the intake port in 964
kondzi

Replies: 52
Views: 5933

PostForum: Performance Upgrades   Posted: Fri Jun 23, 2023 6:36 pm   Subject: Need some help for porting the intake port in 964
Again, nicely done!

Thanks Mike!

I talked to them today about the low lift losses, and they told me I should not reference these paper notes of the operator. I found in my email SPAM this, from ...
  Topic: Need some help for porting the intake port in 964
kondzi

Replies: 52
Views: 5933

PostForum: Performance Upgrades   Posted: Thu Jun 22, 2023 8:19 am   Subject: Need some help for porting the intake port in 964
Yeah, it was 6 times already ha ha.
I think I will make a mold of this CNC’ed port to compare with the one I have from my hand ported port.
As my hand ported port did not give any more flow at f ...
  Topic: Need some help for porting the intake port in 964
kondzi

Replies: 52
Views: 5933

PostForum: Performance Upgrades   Posted: Thu Jun 22, 2023 6:20 am   Subject: Need some help for porting the intake port in 964
A short update. Today I got my heads from the CNC shop. 2.5 months late and they included a price increase during the time not asking me if I agree to that :-/

Anyway I have them back.

https:// ...
  Topic: Fuel enrichment at WOT
kondzi

Replies: 12
Views: 1096

PostForum: Performance Upgrades   Posted: Wed Jun 14, 2023 5:48 pm   Subject: Fuel enrichment at WOT
Not sure how this works with N/A WUR with vacuum, but in the 931 WUR there is a screw, that can limit the enrichment (or allow it more). It basically allows diaphragm to move more or less, therefore l ...
  Topic: Fuel enrichment at WOT
kondzi

Replies: 12
Views: 1096

PostForum: Performance Upgrades   Posted: Wed Jun 14, 2023 6:00 am   Subject: Fuel enrichment at WOT
Hmmm... Let me think. The most important thing in CIS is the WUR. This is the gremlin that changes the fuel pressure during the engine run (other than idle). Either cold or warm or part warm or whatev ...
  Topic: 931 stock boost levels /safe boost levels on stock internals
kondzi

Replies: 162
Views: 75672

PostForum: 931 Tech.   Posted: Tue Jun 13, 2023 6:06 am   Subject: 931 stock boost levels /safe boost levels on stock internals
I did some test fit today quickly.

https://www.bearsgarage.pl/wp-content/uploads/2023/06/IMG_3329.jpeg

It seems that best it’s with fuel supply at back and pressure regulator at front / side ...
 
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