Airflow/Horsepower limit for stock 2.0L intake system? |
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Airflow/Horsepower limit for stock 2.0L intake system? |
greggearhead |
Dec 12 2019, 11:32 AM
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#1
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Newbie Group: Members Posts: 35 Joined: 19-March 11 From: Colorado Springs, CO Member No.: 12,836 Region Association: None |
OK, I did search, and couldn't really find anything.
My basic question - when does the 914 2.0L intake become a restriction to power? I have a built VW 412 - 2056 cc Type 4 * 9550 RAT cam * LE-180 heads (914 2L combustion chamber, 42mm intake, 36mm exhaust) * Mallory Unilite vacuum advance distributor, Mallory Promaster coil, Mallory Hyfire CDI * Stock 412 heater boxes & Thunderbird exhaust * 2L Bus plenum and throttle body * 2L 914 runners * Ford "Design II" F1TE-D9A (Bosch 0280150947) 24# injectors (modified) * SDS programmable EFI * Oil bath air cleaner housing modified to use large circular filter element I have a pair of IDF manifolds, and some VFR throttle bodies. Roughly equivalent to Weber 40IDFs (maybe a bit better in terms of flow). Engine made 115hp at the wheels. I'm just wondering if the (improved) stock intake is a cork or not? (IMG:http://www.914world.com/bbs2/uploads_offsite/i61.photobucket.com-12836-1576171976.1.jpg) |
Mark Henry |
Dec 13 2019, 07:34 AM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
This is a 996 plenum.
So for a 914 this is what I would do except a bit smaller and 4 runners, to do this you would have to use most of the 914 bay and even remove the raintray to make it fit. It's the long match ported runners that are going make this work. And then "you can't get it in, if you can't get it out", so something along the lines of a 1-7/8" tangerine header would be needed. Hmmm... I have that header hanging on my wall.... (IMG:style_emoticons/default/idea.gif) But as you can see the runners are quite long and wouldn't work for the 412. (IMG:http://www.914world.com/bbs2/uploads_offsite/qsm.com.au-26-1576244074.1.jpg) Then you could take it a step further with a plenum based ITB system, best of both worlds, a plenum based system with a usable vacuum signal and an ITB fuel injection system. (IMG:http://www.914world.com/bbs2/uploads_offsite/impactbumpers.com-26-1576244075.2.jpg) https://www.drivingline.com/articles/air-co...-intake-revamp/ |
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