 /6 distributor curve question |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
  |
| tornik550 |
 Apr 7 2017, 01:37 PM
Post
#1
|
|
Senior Member  Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None  |
I have a /6 2.7l with E cams. Should I base my distributor curve on the cams that I am using or the displacement? If you had my setup- would you go with a 2.2e distributor or a 2.7s distributor?
|
   |
 
|
| GeorgeRud |
Apr 7 2017, 03:34 PM
Post
#2
|
|
Advanced Member Group: Members Posts: 3,725 Joined: 27-July 05 From: Chicagoland Member No.: 4,482 Region Association: Upper MidWest |
Does the 2.2 distributor fit in the 2.7 case? I thought they were different sizes.
|
|
|
|
| tornik550 |
Apr 7 2017, 03:37 PM
Post
#3
|
|
Senior Member Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None |
QUOTE(GeorgeRud @ Apr 7 2017, 05:34 PM)  Does the 2.2 distributor fit in the 2.7 case? I thought they were different sizes. The 2.2 doesn't fit the 2.7 case. I actually have a programmable distributor and I was just going to input the specs. |
|
|
|
| GeorgeRud |
Apr 7 2017, 03:59 PM
Post
#4
|
|
Advanced Member Group: Members Posts: 3,725 Joined: 27-July 05 From: Chicagoland Member No.: 4,482 Region Association: Upper MidWest |
On my 2.7 with an HPV-1 Clewitt ignition, we ended up with 8 degrees initial advance with an additional 25 degrees added at 3000 RPM, then no additional advance at 6000. I'm running RS pistons with S cams and Webers.
|
|
|
|
| tornik550 |
Apr 7 2017, 04:06 PM
Post
#5
|
|
Senior Member Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None |
QUOTE(GeorgeRud @ Apr 7 2017, 05:59 PM) On my 2.7 with an HPV-1 Clewitt ignition, we ended up with 8 degrees initial advance with an additional 25 degrees added at 3000 RPM, then no additional advance at 6000. I'm running RS pistons with S cams and Webers. This may sound silly however was there any sort of a curve or was the advance 8 at all rpm til 3000 and all rpm above 3000 was 25? |
|
|
|
| gereed75 |
Apr 7 2017, 05:16 PM
Post
#6
|
|
Senior Member Group: Members Posts: 1,246 Joined: 19-March 13 From: Pittsburgh PA Member No.: 15,674 Region Association: North East States 
|
Tornik There are a bunch of curves on line like these below.
http://forums.pelicanparts.com/porsche-911...-2-4-mfi-t.html Remember the rpm curves are based on distributor rpm - half the engine rpm. |
|
|
|
| mb911 |
Apr 7 2017, 05:42 PM
Post
#7
|
|
914 Guru Group: Members Posts: 6,851 Joined: 2-January 09 From: Burlington wi Member No.: 9,892 Region Association: Upper MidWest
|
I am pretty sure the 2.7 and down distributor Are interchangeable as far as fit.. That said the curves are all different..
|
|
|
|
| GeorgeRud |
Apr 7 2017, 08:31 PM
Post
#8
|
|
Advanced Member Group: Members Posts: 3,725 Joined: 27-July 05 From: Chicagoland Member No.: 4,482 Region Association: Upper MidWest |
The 25 degrees are added linearly to the initial 8 degrees. The HPV-1 does not have near the capabilities of more modern ignition systems, but has been reliable and simple.
|
|
|
|
| porschetub |
Apr 9 2017, 12:43 AM
Post
#9
|
|
Advanced Member Group: Members Posts: 4,698 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Not sure so don't know what year was the reverse rotation dizzy 2.7 or later ?.
I have 2.4 MFI dizzy and have removed the vacuum retard can lock out the retard on the advance and run it as a a pure mechanical advance ,yet to fit so don't know should work,easier to get parts for than the Marreli besides. |
|
|
|
| porschetub |
Apr 9 2017, 01:09 AM
Post
#10
|
|
Advanced Member Group: Members Posts: 4,698 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
QUOTE(tornik550 @ Apr 8 2017, 09:37 AM) QUOTE(GeorgeRud @ Apr 7 2017, 05:34 PM) Does the 2.2 distributor fit in the 2.7 case? I thought they were different sizes. The 2.2 doesn't fit the 2.7 case. I actually have a programmable distributor and I was just going to input the specs. Sorry failed to read your reply ,would you have said they needed machining down and changing the gear ?...just don't remember what I read a while back on this. |
|
|
|
| mb911 |
Apr 9 2017, 06:39 AM
Post
#11
|
|
914 Guru Group: Members Posts: 6,851 Joined: 2-January 09 From: Burlington wi Member No.: 9,892 Region Association: Upper MidWest
|
QUOTE(porschetub @ Apr 8 2017, 10:43 PM) Not sure so don't know what year was the reverse rotation dizzy 2.7 or later ?. I have 2.4 MFI dizzy and have removed the vacuum retard can lock out the retard on the advance and run it as a a pure mechanical advance ,yet to fit so don't know should work,easier to get parts for than the Marreli besides. 3.0 |
|
|
|
|
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 16th May 2024 - 08:58 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.