![]() |
|
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. |
|
![]() |
RFoulds |
![]()
Post
#1
|
Green Teen 66 ![]() ![]() ![]() Group: Members Posts: 837 Joined: 10-August 09 From: La Quinta, CA Member No.: 10,656 Region Association: Southwest Region ![]() ![]() |
To race in VARA D Production 2 liter class, I want to build a solid reliable motor. I am limited to the stock crank (71mm stroke), and stock piston size (94mm)
I have on hand a GA short block and a NOS set of Mahle 94mm P&C's, 8:1cr. I also have a nice pair of Italian Weber 40's. So my thought is, with the right machining and balancing, I should be able to build a solid reliable 2.0, that can produce 120hp . (wild guess) Of course, what version of Webcam to use is still TBD, and heads. questions I have: am I kidding myself that the stock Mahle cylinders can handle continuous high rev's and heat? will 44IDF carbs be significantly better than 40 or will the size of the jets matter most? besides balancing crank, rods and flywheel, what machining should I consider? (Have not considered the heads yet.) |
![]() ![]() |
Charles Freeborn |
![]()
Post
#2
|
Member ![]() ![]() Group: Members Posts: 250 Joined: 21-May 14 From: United States Member No.: 17,377 Region Association: Pacific Northwest ![]() |
I'd be happy to share specs of my Allen Johnsen built 2.0 if you're interested. Not sure of hp (haven't had it on a dyno yet) but guesstimate from others is 160ish.
I'm going to be on the hunt for a spare engine of similar specs this winter, so I'm following this thread with interest. -C |
![]() ![]() |
![]() |
Lo-Fi Version | Time is now: 13th June 2024 - 07:29 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 ... |