![]() |
|
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. |
|
![]() ![]() |
![]() |
retrotech |
![]()
Post
#1
|
retrotech ![]() ![]() Group: Members Posts: 470 Joined: 2-November 03 From: Mosier, Oregon Member No.: 1,302 ![]() |
Does anyone know the diameter of stock 6 cyl. exchangers?
|
Maltese Falcon |
![]()
Post
#2
|
914 Guru ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 5,044 Joined: 14-September 04 From: Mulholland SoCal Member No.: 2,755 Region Association: None ![]() ![]() |
should be eqivalent to 1.375" (ID) just convert to mm. This would be 1.5" ( OD), just minus the 1/16" wall dia. of the tube. You can proll'y get away with up to 2.7L
street engine with OE Hboxes...anything larger in displacement will be will be like breathing thru a straw. (IMG:http://www.914world.com/bbs2/html/emoticons/mad.gif) MF |
retrotech |
![]()
Post
#3
|
retrotech ![]() ![]() Group: Members Posts: 470 Joined: 2-November 03 From: Mosier, Oregon Member No.: 1,302 ![]() |
Thanks, that is what I was looking for. So do you think 1 1/2" will give me any incease performance, or should I go 1 5/8? I have a 2.8. with 46mm carbs, 10.3 to 1 compression.
I appreciate any input. |
Maltese Falcon |
![]()
Post
#4
|
914 Guru ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 5,044 Joined: 14-September 04 From: Mulholland SoCal Member No.: 2,755 Region Association: None ![]() ![]() |
Retro, the HBs will limit the peak performance of that bad ol 2.8. I strongly suggest the 1.625" OD (1 5/8"). PM me if you want a new header set in the box (we are having a 914club summer sale), or clicky link to our site below.
Marty |
retrotech |
![]()
Post
#5
|
retrotech ![]() ![]() Group: Members Posts: 470 Joined: 2-November 03 From: Mosier, Oregon Member No.: 1,302 ![]() |
Marty,
Where is the link? |
Joe Bob |
![]()
Post
#6
|
||
Retired admin, banned a few times ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None ![]() |
Isn't 1 5/8 OD, 1.5 ID |
||
![]() ![]() |
![]() |
Lo-Fi Version | Time is now: 24th April 2025 - 10:33 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |