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) |
greggearhead |
Dec 13 2019, 10:12 AM
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#2
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Newbie Group: Members Posts: 35 Joined: 19-March 11 From: Colorado Springs, CO Member No.: 12,836 Region Association: None |
OMG - are you guys even reading my post?
I already have the largest throttle body, largest plenum and largest runners. I asked about if anyone knew the limit of the factory components because I am switching to ITBs. I'm not asking about making an intake manifold, or adapting varioram, or changing the plenum, etc. I've used ITBs on lots and lots of different engines over the years, and throttle response, when tuned correctly, is usually noticeably much better. I'm not asking about those things. |
GregAmy |
Dec 13 2019, 10:52 AM
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#3
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Advanced Member Group: Members Posts: 2,311 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States |
I asked about if anyone knew the limit of the factory components. No. No one knows. Everyone that cares about performance goes to Webers IDFs, or Dellorto DRLAs, or dual-choke intakes and EFI. The stock intake was designed for 100hp. OF COURSE it won't be as good as individual 40mm chokes. Duh. Install the ITBs and be happy. |
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