Autech Pulsar GTi

Discussion in 'Members Rides' started by Dale, Sep 18, 2009.

  1. Sam

    Sam Moderator Staff Member

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    I expected more from the pistons, they will be coming out of mine.
     
  2. Dale

    Dale Moderator Staff Member

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    Yeah i must admit the findings have been dissapointing. I expected more from the Autech full stop, its just a regular DE but with a head skim, notched pistons and uprated cams.

    Rumours were:
    sodium filled valves
    oversize valves
    high comp pistons
    headwork

    It has none of those...

    At least now the 'Autech spec' rumours can be abolished and we have some factual information.


    On the plus side, it gives me greater confidence in the new cylinder head in terms of gains.
     
  3. Sam

    Sam Moderator Staff Member

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    I certainly dont feel so bad about pulling things out of mine now
     
  4. stufagti

    stufagti

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    good work man, :)

    might be more to do with the mapping with the cam setup :)
     
  5. rowdy-GTi

    rowdy-GTi Moderator Staff Member

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    So are those just notched 10:1 pistons?...they certainly look different to 16VE ones. Why notched?

    Looks nice and clean in there anyway. Good luck with the build.
     
  6. shaggy_master

    shaggy_master brapp brapp!

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    I'm guessing they are notched for clearance reasons because of the headskim and larger cam profile.
    Joe
     
  7. rowdy-GTi

    rowdy-GTi Moderator Staff Member

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    Hardly a huge skim and massive cam tho! OTT to me.
     
  8. shaggy_master

    shaggy_master brapp brapp!

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    Well you never know.... The Autech pistons could have a higher deck height, or the block deck height could be lower... If there's a smaller piston to head clearance, the valve notches would be needed obviously.
    Joe
     
  9. Raceworx

    Raceworx

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    you need to put the autech pistons next to some satndard UK RR pistons and see if they are taller..
     
  10. Dale

    Dale Moderator Staff Member

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    Forgive if im missing something, but all i needed to do is measure the piston deck clearance.

    If the autech piston had a taller compression height, or had the deck of the block shaved, the piston deck clearance would be less than a normal DE @ 0.5mm....which it isnt.
     
  11. sri_alan

    sri_alan

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    I think this engine is alot more common than previously thought, especially now its known that it has minimal differences to a standard highport. I would say those South African N14 Sunny's with the claimed 180bhp are using the same engine
     
  12. Dale

    Dale Moderator Staff Member

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    Well since the strip down ive spent a few hours cleaning up the original highport intake manifold.

    I have port matched the runners to the head and polished up the plenum entrance and bellmouths.

    Its also had the mandatory lick of silver paint.

    Im sure these small changes wont make any difference, but they cant hurt:wacko: Keeps me busy while i try to save some funds for new parts.

    [​IMG]
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    [​IMG]
    [​IMG]
    [​IMG]
    [​IMG]
     
  13. Almerasleeper

    Almerasleeper

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    Good stuff Dale - as you said it can't do any harm :)
     
  14. VVLwezz

    VVLwezz

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    every little extra helps in the NA game dale, nice one
     
  15. shaggy_master

    shaggy_master brapp brapp!

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    Good progress Dale... I look forward to you completing this project!
    Joe
     
  16. Rob-Gti

    Rob-Gti

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    Location:
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    Looking great there Dale, some fantastic work you've put into it.
     
  17. edk

    edk Addicted to Torque Staff Member

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    Good work mate :thumb:

    Which car you taking to shakeys?
     
  18. Dale

    Dale Moderator Staff Member

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    I'll be in the TSi Ed, trying for a high 13.

    Autech's a little while away yet :( Shame really, not enough time and money.

    Got most the parts now, should be some updates very soon.
     
  19. edk

    edk Addicted to Torque Staff Member

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    No that's great I want to see the TSi in action :). Movement against the SR20!!! :lol:
     
  20. shaggy_master

    shaggy_master brapp brapp!

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    Everything's looking just great Dale. Very impressed by the BTCC head after having a look around it.
    You've got your head screwed on so I'm sure you'll make the most of this build's potential.
    Time to invest in a dial gauge and other tech cam timing adjustment gear boyo!!
    Joe
     
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