![]() |
|
|
|
My friends call me Phish
|
Dizzy Rebuild
Can someone explain what recurving a distributor means and does it have to be done on a CIS system to Carbs and is it something I can do myself?
Thanks. |
||
![]() |
|
Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
|
In a nutshell, recurving a distributor means modifying the advance weights & springs to allow more ignition advance at a lower RPM for better throttle response and engine acceleration. The limitations are mainly octane and compression ratio.
You need a distributor machine to precisely measure advance at all RPM to achieve the desired result. Further, you need a selection of springs and weights to fine-tune the unit to get the values you want. Does this help??
__________________
Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
||
![]() |
|
Registered
|
![]()
Re-curving a distributor means changing the advance curve and limit, to maximize performance based upon your engine configuration, and driving preference.
What distributor do you have? Engine? Mods? Track, street, combo? Pictures?
__________________
78’ SC 911 Targa - 3.2SS, PMO 46, M&K 2/2 1 5/8” HEADERS, 123 DIST, PORTERFIELD R4-S PADS, KR75 CAMS, REBEL RACING BUSHINGS, KONI CLASSICS |
||
![]() |
|
My friends call me Phish
|
I am attempting to change a 2.7 CIS into a 2.7 carburetor. The build is going to be JE Pistons 9.5 CR, with E cams and 40 webers. The car will be street driven and i don't believe there is any special mods.
![]() ![]() ![]() ![]() ![]() Thanks a bunch to the both of ya ![]() |
||
![]() |
|
Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
|
I would make sure your distributor doesn't have worn bushings or excessive end play when you recurve it. Most high-mileage ones need to be rebuilt.
__________________
Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
||
![]() |
|
Registered
|
.....the sound, I believe is similiar to, cha ching. Probably around 500 + for rebuild and recurve. You probably will not find anyone who is going to just recurve it, in a high milage condition.
__________________
78’ SC 911 Targa - 3.2SS, PMO 46, M&K 2/2 1 5/8” HEADERS, 123 DIST, PORTERFIELD R4-S PADS, KR75 CAMS, REBEL RACING BUSHINGS, KONI CLASSICS |
||
![]() |
|
![]() |
Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
|
Quote:
![]()
__________________
Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
||
![]() |
|
Constitutional Liberal
Join Date: Apr 2004
Location: Seasonal locations
Posts: 14,379
|
Contact Aaron (Burn_bros) he is as good as they get at this kind of distributor service.
Rennwerks Inc. Aaron Burnham Camarillo, CA. 805-240-6931 aaronburnham@hotmail.com
__________________
Jim “Rhetoric is no substitute for reality.” ― Thomas Sowell |
||
![]() |
|