1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

aircooled T3 vs subaru

Discussion in 'Performance' started by tillis, Sep 21, 2016.

  1. tillis

    tillis Well-Known Member

    Messages:
    355
    Location:
    gold coast
    exactly what i'm thinking...but the cam timing is the big thing for me...vw engines are meant to be revved so why not help it breathe...and the beauty of the aircooled is higher comp barrells and pistons are available...bolt on...well sort of after you have removed a dismantled it! anyway formulating a plan and shopping list..exhaust first thats the easiest
     
  2. Barry

    Barry Well-Known Member

    Messages:
    5,696
    Location:
    Abbotsford NSW
    You dont need to pay money for "hi compression" barrels and pistons

    You can happily run up to say 10:1 CR with stock stuff.
    Have a look at Web Cams for different sticks that are available for T4's

    It is not hard to get 100 ponies at the wheels in a T4
     
    Resnort likes this.
  3. Resnort

    Resnort Active Member

    Messages:
    347
    Location:
    Dbay QLD
    I was going the Subi route but decided on this instead :) should be fun.......and a turbo later :cool:

    PA090074 (Medium).JPG
     
    Barry likes this.
  4. nils

    nils Well-Known Member

    Messages:
    1,512
    Location:
    newcastle
    Stop posting photos already and fire it up!!
     
    Resnort likes this.
  5. tillis

    tillis Well-Known Member

    Messages:
    355
    Location:
    gold coast
    Barry is it possible to "shave the heads" as we used to say 40thou or more to get 9 or 9.5:1 cr? never having played with vw i have no idea
     
  6. Barry

    Barry Well-Known Member

    Messages:
    5,696
    Location:
    Abbotsford NSW
    Yes - you fly cut the head so the barrel sits deeper into the head
    You need to be aware of your chamber shape so as you keep the head volume at 50-55cc
    You also need to keep your deck at 1mm(ish) so you have the right amount of squish

    squeeze here..............adjust there...............compensate here :)

    All possible and good fun

    Personally i think it is a matter of "IF" you want to stay air cooled or not.

    Personally - there is nothing sweeter than a set of Dellorto's on song

    That said Steve C's STI 1303 is a work of art
     
  7. tillis

    tillis Well-Known Member

    Messages:
    355
    Location:
    gold coast
    Hi Barry thanks for info...yes the "IF"...but i had a WRX in my bay and now have an ecotec 3.8 but i bought the T3 for cruising and would just like to cruise with a little more panache! So webcam and shave the heads and if the original FI isn't up to it...yep twin twin dellortos
     
  8. AC-T3

    AC-T3 Well-Known Member

    Messages:
    1,084
    Location:
    Woy Woy
    Think you'll need to hunt down some low mount manifolds to clear the lower engine bay height. They are out there but not any every day item.
     
  9. tillis

    tillis Well-Known Member

    Messages:
    355
    Location:
    gold coast
    anyone use sidedraft to avoid this problem?
     
  10. tillis

    tillis Well-Known Member

    Messages:
    355
    Location:
    gold coast
    Ha! I'll make up manifolds and try a pair of SU's i have...now we talking retro...
     
  11. AC-T3

    AC-T3 Well-Known Member

    Messages:
    1,084
    Location:
    Woy Woy
    Now that sounds clever.
     
  12. cbus

    cbus Well-Known Member

    Messages:
    13,344
    Location:
    sunshine coast
    Sidedrafts into a VW head defeats the purpose of sidedrafts a bit ;)
     
  13. tillis

    tillis Well-Known Member

    Messages:
    355
    Location:
    gold coast
    standard fuel injected manifold already take a 90 degree bend from the heads...not trying to build a formula 1 engine here...engines rely on intake gas velocity...and smaller is better when it comes to lowdown power and torque
     
  14. Barry

    Barry Well-Known Member

    Messages:
    5,696
    Location:
    Abbotsford NSW
    I have seen a side draft on a Type 1 with a supercharger - that worked :cool:
     
  15. AC-T3

    AC-T3 Well-Known Member

    Messages:
    1,084
    Location:
    Woy Woy
    Didn't Pete's fire breathing camel have 4? Now THAT worked!
     
  16. Resnort

    Resnort Active Member

    Messages:
    347
    Location:
    Dbay QLD
    Now that sounds amusing
     
  17. Wattie

    Wattie Well-Known Member

    Messages:
    1,250
    Location:
    Mildura. Victoria. Australia.
    Oh Yeah, I fitted my home made sidedraft to my magic old MK2 Zephyr, ahh but that was 10000 lifetimes ago :cool:
    [​IMG]
     
  18. Vamper1

    Vamper1 Member

    Messages:
    74
    Location:
    Stanwell Park
    looks great !
    with the sub motor I'm on 620 kms and just touching the red area on the fuel gauge !!!
     
    Resnort and nils like this.
  19. evan&janine

    evan&janine Active Member

    Messages:
    192
    Location:
    chambers flat
    Thanks to the collective that is this thread, interesting stuff, my only addition is that pic of engine table covered with bits and tools etc etc looks all too familiar!. Im about to set up duals to replace the progressive weber, my 2lt was efi but set up as is.
    Evan and Janine.
     
    Resnort likes this.
  20. Resnort

    Resnort Active Member

    Messages:
    347
    Location:
    Dbay QLD
    Very interested to see the outcome of that. How's it go with the carby?
     

Share This Page