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PNP'd my own TB

Discussion in 'Auto Multi-Media' started by Turbo&Auto, Mar 31, 2008.

  1. Turbo&Auto

    Turbo&Auto Nick Go FAST!!

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    I read on Nasioc that you pick up a few HP by tapering the TB out to a knifed edge. Does make sense. The TMIC is directly connected to the TB, so airflow is coming out and then hitting a .25" thick wall. The stock TB also has a lil lip just before the throttle plate too.

    So I started by removing the lil lip and tapering the whole TB. Then polished it up nice and re installed. I noticed some nice off boost throttle response pickup as well as a lil better top end.

    I got bored at work and had a thought....What if I mill that center arm down?? This would make more room for airflow without actually enlarging the center bore of the TB further. This is the results:

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    It took the results of the 1st step and just enhanced them even further! The top end is incredible now. I wish I had access to a AWD dyno so I could put some real numbers to this but my g/revs went up when I logged. Before I had a peak of 230 G/rev from 5800 to 7000. Now Im pulling 233-235 from 6K -7200. Im happy with the results :)
     
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  2. eg6sir

    eg6sir Supa Mod Moderator VIP

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    wow, nice work..
     
  3. TurboMirage

    TurboMirage YEEAAAHHH VIP

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  4. totalburnout

    totalburnout Well-Known Member VIP

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    Nice work.

    Next PNP job; intake manifold. Remove or hone the tumbler gas valves (TGVs). Then throw on a new turbo inlet hose from ebay or the nasioc classifieds.

    I'm sure thats a real nice car you have, especially with it being a few hundred pounds lighter than a WRX and having your constant tuning and tweaking abilities to fine tune.
     
  5. Turbo&Auto

    Turbo&Auto Nick Go FAST!!

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    I just purchased a 20G the other day. Went with the Td06 20g with a 7cm exhaust housing. Hoping to hit full spool around 4K.

    Also picked up DW 750's, APS 65mm CAI, BPM inlet. I plan on removing the Intake Manifold and doing the TGV delete and PNP'ing them as well :)
     
  6. D15Beater

    D15Beater HNFTuning

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    I taper mine out from the plate to the end some too but i do it by hand....drill and several steps with different stones, sanding wheels, polishing wheels, etc,etc....

    This is the one on my LS....

    [​IMG]
     
  7. Turbo&Auto

    Turbo&Auto Nick Go FAST!!

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    You polished it up nice, taper the very end out to a thin rolled edge. You still have a thick edge there :)
     
  8. nootrac22

    nootrac22 Well-Known Member VIP

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    my biggest question on this is, where do you find the time to do all of this?
     
  9. Turbo&Auto

    Turbo&Auto Nick Go FAST!!

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    At work :) LOL!

    I sometimes get lucky and have stuff to program. Each part takes 20+ mins on an automated test setup. So I get some downtime to play around a lil :)
     
  10. 92civicb18b1

    92civicb18b1 The Trisexual

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    I tapered the TB on my old LST. But it looked much more like Turbo&Auto's. Sorry no pictures.

    But T&A, looks great. :thumbsup:
     
  11. Turbo&Auto

    Turbo&Auto Nick Go FAST!!

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  12. eg6sir

    eg6sir Supa Mod Moderator VIP

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    like this T&A?

    [​IMG]


    this was my b16 TB.. of course i didnt do it.. Maxbore did

    64mm and i believe it tapered out to 66mm
     
  13. Turbo&Auto

    Turbo&Auto Nick Go FAST!!

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    Yeah man, thats the way :) The Matrix guys use maxbore as well. i think they bore the whole center and replace the plate, correct?
     
  14. eg6sir

    eg6sir Supa Mod Moderator VIP

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  15. Turbo&Auto

    Turbo&Auto Nick Go FAST!!

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    Damn, thats a monster! LOL! I just sold the power one I had, 68mm with a taper to 73mm. Wish I couldve used it first to say what a TB that size does for me :)

    I noticed the only difference in mine and that one is I countersunk my screws and thinned all the way to the ends. I need to look at some more and see why they did that over what I did.
     
  16. EGProject

    EGProject YEEEEAAHHHHH

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    I love bridgeports.


    At first I didn't realize that was an endmill and was like "why is he drilling the shaft?".
     
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