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DOHC TB Modified!

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  • DOHC TB Modified!

    Well. after 5 hours of grinding and polishing, my TB is done (again)

    about a year ago, i had an extra TB and intake manifold, so i went about for my first time port matching and polishing them. i also spent time reworking the inlet and exhaust sides of the TB to smooth it out and work in the cuts that resulted from matching the TB to the Intake arm.

    Well since it was my first attempt at it, there were some area's that had room for improvement. so today i took the time to redo the TB. on my first attempt, the mouth of the TB had a bevile on the lip and then it was pretty much stock until after the throtle plate. behind the throtle plate, is where i did most of the orignal work.

    On this new attempt i now did away with the bevile and have a perfict cone from the mouth lip to the throtle plate! and although it isnt as polished as my first attempt, it is nice and smooth and very slick! I also took the time to shave the extra off the bolts on the throtle plate... Yes I know all this seems and probably is overkill for my engine, but it was a fun project.









  • #2
    Update

    Updated pics.... cut down throtle bar for improved cross section area



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    • #3
      Any problems with your MAF after polishing it?
      1997 Z34 Monte,: testing 4 exh cam\'s, RSM STB, K&N, Eagle077 245/40/ZR18 Nitto Extreme
      1972 3/4 ton 4X4 longbed, built 350, 400 auto, 6\" spring lift, 35\" AT/BFG\'s, dana 60 front axle, 14 bolt gm w/detroit locker 4.56 gears. My ricer smasher

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      • #4
        nope no problems at all. everything runs great!

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