J4 cams in JP4

  1. Newbie Joined: Feb 2014 Posts: 11
    #1
    Ive heard that with J4 cams in the 1.6 16v JP4 engine that it is good for around 130 ish bhp, is this true?
  2. Super Moderator Joined: Nov 2009 Cambridge(ish), UK. Posts: 10581 BMW 5x M50d.
    #2
    No. It will make around 120bhp everything else being equal.
  3. Established Member Joined: Jan 2012 south essex!! Posts: 2442 posi blue vtrs race car
    #3
    i have to say that one of the engineers at work has a rolling road print out for his jp4 106git

    simotta induction
    supersprint exhaust
    j4 cams


    151bhp fly

    120 wheels...


    ross you might even know him, malkyt over on 106 moaners...
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  4. Super Moderator Joined: Nov 2009 Cambridge(ish), UK. Posts: 10581 BMW 5x M50d.
    #4
    Hmm... I have to say, I'm doubtful of the figures I'm afraid. :/ I have a dyno printout of 112bhp atw for a jp4 with j4 cams running low comp pistons - and I know that isn't right

    Perhaps it's ok - but that sure seems high - don't you think?
  5. Newbie Joined: Feb 2014 Posts: 11
    #5
    hmm, im sure i read somewhere it would be quicker than the standard J4 engine and have better pull from lower down and in the middle and be as good at the top end too
  6. Established Member Joined: Jan 2012 south essex!! Posts: 2442 posi blue vtrs race car
    #6
    Quote:
    Originally Posted by Ross View Post
    Hmm... I have to say, I'm doubtful of the figures I'm afraid. :/ I have a dyno printout of 112bhp atw for a jp4 with j4 cams running low comp pistons - and I know that isn't right

    Perhaps it's ok - but that sure seems high - don't you think?

    yeah it does seem rather high i agree, unfortunately thats what the rollers said that day so thats all i can go on... it does feel faster than a std one but im not sure about 30bhp more...
  7. L-plater Joined: Jan 2012 Watford Posts: 49
    #7
    I have kent pt50 j4 cams in jp4(110bhp) engine, it made 139bhp.