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FP4R2 Cams?

Posted by jdub099, Jan 22, 2020

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  1. jdub099

    jdub099 Supporting VIP

    Joined Sep 2, 2019
    Denver, Colorado
    So I got the P/N off my previously unknown "Stage 4" cams that came with my car. 101-FP4R2-8. At least it seems like it should be a 2 at the end. I did a fair bit of searching and found that cams called "FP4R2" indeed do exist, and some people have used them, but I couldn't find any specs. Before I bother FP asking questions about a product I didn't buy from them, I thought I'd try here.

    I also have Kiggly Beehive Springs and his HLA regulator. This is a 2.3L.

    Attached Files:

  2. DSMPT

    DSMPT Proven Member

    Joined Jun 12, 2014
    Japan / Mexico, Arizona
    As much as I know, those are the FP4Rs. DSM/EVO 4Rs have its part number xxx-FP4R2-8E/I stamp on it.

    Drag Race Build 1K  2

    1990 Mitsubishi Eclipse GSX
    awd · manual · 1G DSM

    Street Build 1K  4

    1998 Mitsubishi Eclipse GSX
    awd · automatic · 2G DSM
  3. TSiAWD666

    TSiAWD666 Freelancer

    Joined Aug 15, 2003
    Herndon, Virginia
    FP had various grinds over the years and the FP4R2 were one of them . Here are the cam cards that came with mine. I only recall I chose these to be paired with my 2.3l stroker and FP said they'd be a good match, as did others.

    Attached Files:

    Road Race Build 14K  12  371

    1999 Mitsubishi Eclipse GSX
    377 whp · 416 lb/ft · 2G DSM
  4. jdub099

    jdub099 Supporting VIP

    Joined Sep 2, 2019
    Denver, Colorado
    Awesome. Exactly what I was looking for. Lift is about what I measured with calipers. They may be too big for me. I went back to a stock intake (from JMF Race) and will be running either an Evo 3 16g or 20g (I have both, down from a 6766). I have HKS 272s on the shelf. I'll try the FP cams first since they're already in there.
  5. MichaelSuch

    MichaelSuch Proven Member

    Joined Jun 30, 2008
    Pinckneyville, Illinois
    I would run the FP4R cams over the HKS cams. Like you mentioned, the FP4Rs will likely be a little big for a 16g or 20g but a stock intake manifold will help with midrange and under the curve power.

    I ran the FP4R cams (I don't think they were R2 cams though) on my FP Black and Evo 3 intake manifold with my 2.3L auto car. They pulled amazing till my 8600rpm redline.

    495  1

    1992 Mitsubishi Eclipse GSX
    awd · automatic · 1G DSM

    Street Build 1K  7

    1995 Eagle Talon TSi AWD
    10.146 @ 134.81 · 2G DSM
  6. jdub099

    jdub099 Supporting VIP

    Joined Sep 2, 2019
    Denver, Colorado
    Hmmm, maybe I'll sell the HKS cams. My backup engine is a 2.0L though and the HKS cams with 42-44 lbs is a decently proven combo on a 2.0L.
    Last edited: Jan 23, 2020
  7. Bleakley

    Bleakley Proven Member

    Joined Jan 29, 2017
    Pittsburgh, Pennsylvania
    Not familiar with the 2.3 at all.
    For 2.0, Those specs on the cards for those cams are big. High RPM.
    20G and 2.0L I agree would be much better served with the 272’s over those FP4’s

    Again - not familiar with a 2.3, and w/o more info - but I personally would probably try to find something between the two.

    Street Build 892  1

    1995 Eagle Talon TSi
    fwd · automatic · 2G DSM

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