16v manifold bore sizes?

  1. #1
    does anyone know what size bore each branch on the manifold is?
    i.e

    supersprint
    raceland
    janspeed
    gmc
    piper

    really interested in the janspeed as i have been offered one!

    this could also help a few people out 2!
  2. #2
    tbf, even if they were listed, most people on here havent a fucking clue what bore sizes would be any good.
  3. #3
    Quote:
    Originally Posted by D34no View Post
    does anyone know what size bore each branch on the manifold is?
    i.e

    supersprint
    raceland
    janspeed
    gmc
    piper

    really interested in the janspeed as i have been offered one!

    this could also help a few people out 2!
    do you know which size your car will make peak power at?

    if so get a custom one made.

    if not then what ya just going to go with the biggest?
  4. #4
    lol true. anyway they would help me so get your verniers out and measure the manifold bore. i think the supersprint off top of my head is 50mm
  5. #5
    no m8 just out of interest!
  6. #6
    tbh if you go for the biggest then your bhp wont be so restricted, for example the raceland the max power that should go through it id 150bhp from what i gather so the larger the bore size the more tuning you can put in i think is the principle but if you go too large for your untuned engine there wont be enough back pressure
  7. #7
    will be running TB's m8! and i think racelands are good for about 170bhp
  8. #8
    if you look at vtr180's thread you'll see he found out that racelands are good upto about 170180bhp so hes changed as hes running about 186bhp i think on Tb's

    Finch