2.0l engine with 1.8 heads - what FI set up to use? |
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2.0l engine with 1.8 heads - what FI set up to use? |
Tdskip |
Dec 3 2018, 07:39 AM
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#1
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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! |
cgnj |
Dec 4 2018, 12:36 AM
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#2
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Senior Member Group: Members Posts: 623 Joined: 6-March 03 From: Medford, NJ Member No.: 403 Region Association: None |
Didn't this discussion happen within the last few weeks?
I'll repeat what I know. Ray Greenwood & Jake had a discussion on STF regarding single plenum 2270 motors. The condensed version is 2.0 runners, bus plenum works better than 2.0 plenum. Now it could be that the id of 1.8 & 2.0 runners are the same. I only have 2.0 runners so, I can't say. Essentially you get better flow with ljet plenums because the intake air hit the floor in the 2.0 plenum and loses velocity. So it seems the best intake setup would utilize a ljet plenum. I purchases a 2.1 plenum and cc'ed it. The difference in volume compared to a 1.8 plenum was small or non existent. With your bits in hand, I would go ljet. If you're getting the heads refreshed, go with 2.0 valve sizes. If you find the id of 2.0 runners is larger, dubshop sells intake flanges flanges & you could make your own. The post I replied to does have a link for the STF discussion or you could search the aircooled technologies archive there. |
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