2.0l engine with 1.8 heads - what FI set up to use? |
|
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. |
|
2.0l engine with 1.8 heads - what FI set up to use? |
Tdskip |
Dec 3 2018, 07:39 AM
Post
#1
|
Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Counter to popular belief I do not stay up late inventing hairbrained questions for you all, although that is tempting sometime given the wealth of knowledge here. As of around 10:30 AM today this will be a real life scenario.
Let’s imagine I have a 2.0l case running 1.8 heads with a single Weber that runs but I want to convert back to FI. Let’s further image that I have both a 1.8 FI set up and a 2.0 FI set up sitting in the shelf. Which FI set up would I be best advised to use on this engine, and for bonus points and adding to the community knowledge here, why? BTW - planning on doing a tech day on this with/for the SoCal mafia once I get a plan together. Given what seems to be a trend back to FI (or at least renewed interest) I think it could be a useful tech day for the community. Thanks! |
Valy |
Dec 3 2018, 10:59 AM
Post
#2
|
Senior Member Group: Members Posts: 1,671 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
The 2.0 and 1.8 injections are different in all parts (injectors, sensors, throttle body, runners, etc.)
You can use any of them as a whole set on your 2.0 engine. They will work fine. I would prefer the 1.8 setup (L-jet) since parts are more available. For example the 2.0 injectors are NLA and used ones are very expensive while the 1.8 injectors are still available new and cheap. The 1,8 and 2,0 runners have a different bolt pattern but they can be made to fit by drilling new holes in the right place. This is very easy task so I would not consider it an issue. The 2.0 heads are a bit different than the 1.8 in term of valve size, plugs location and combustion chamber size. Having said that, they can be interchanged at some performance cost. Mounting 1.8 heads on 2.0 engine will increase the compression ratio but the less optimal plug location and smaller valves will counter compensate that. |
Lo-Fi Version | Time is now: 2nd May 2024 - 04:02 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 ... |