Results 1 to 4 of 4

Thread: High compression NA DOHC motor swap to a TWIN TURBO car...

  1. #1
    No BS Feedback Score 0 hotGTO's Avatar
    Join Date
    Sep 2010
    Owner Since
    Sorry if you care, I could be lying anyway!

    NJ (south)
    Thanked 9 Times in 5 Posts

    High compression NA DOHC motor swap to a TWIN TURBO car...

    What are all the possible negative consequences of swapping the high compression NA motor into a TT car, and what could be done to avoid any possible negative side effects? Are there any possible positive outcomes from doing it?

    91 Stealth TT- Pampena Stage 2 short block, rebuilt heads, Solid mounts, MBC, Vac reduc, hotwired, Blitz FATT, 4.5" FIPK, TurboXS BOV, Stainless Downpipe, Race pipe, Borla exhaust, AHDS, 500 lb clutch, JDM 25 spline 5 spd/tcase, Short Shifter, EVO leather knob, 18" Mazdaspeed wheels, Front Splitter, in dash touch screen bluetooth/navigation/DVD...

    94 3000GT DOHC - Nitrous express proton series w/ upgraded solenoids, dash mounted datalogger, in dash touch screen navi w/bluetooth, IPT end clutch, high performance trans cooler, Translab shift kit. SOLD

  2. #2
    Now with more poop-smear Not Verified Feedback Score 8 (100%) IPD's Avatar
    Join Date
    Sep 2010
    Owner Since
    Not Anymore

    Blog Entries
    Thanked 548 Times in 394 Posts
    deathsled has done it. just make sure you re-tune it & you'll be fine.

  3. #3
    1st ever COTM and COTY verified Feedback Score 9 (100%) green-lantern's Avatar
    Join Date
    Aug 2010
    Owner Since

    Thanked 459 Times in 354 Posts
    Negative, you can't run high boost

    Positive, you get more power than the 8:1 engines would at low boost.

    Negative side effects, You turn the boost up too high and blow the engine.

    Positive outcome, You keep the boost low and get some good power out of stock turbos running about 8psi.

    I've ran turbos on 10:1 NA engine and it's a lot of fun. The power is great down low and it always comes to life instantly. Of course you will be able to get more power out of an 8:1 TT engine by running more boost but if you're happy with modest power with great response there is nothing wrong with it.

    Quote Originally Posted by HilbillyHomeboy View Post
    I bet she smells of old mustard and sawdust.

  4. #4
    Never finishes any verified
    Feedback Score 8 (100%) DrGonzo's Avatar
    Join Date
    Sep 2010
    Owner Since

    Wake Forest, NC
    Thanked 197 Times in 140 Posts
    My TT is currently running an N/A block at 10:1 and as long as the tune it good you won't have any issues. I'm currently running at 9-10psi and she runs strong as hell with no knock. I just installed a meth kit which should allow me to turn up the boost to 14-15 psi.

    All I have to tune with is an SAFC2 and it only needed minor adjustments in certain rpm ranges.

    Just make sure the N/A block is solid and it will handle the boost. Don't go crazy and tune slowly and safely.

    Check it out on Youtube!!

    93 Stealth TT - The Stealth Project

    Renegade Tech Works ECS Controller on Intrax Springs
    Chrome ECU
    Hybrid 13g's
    EVO 560cc Injectors
    Spec Stage 3 clutch
    Ninja Performance Output shaft & Input spool
    Ninja Performance Solid Tensioner & Gates racing T-Belt
    CX Racing Dual Core FMIC
    Megan SS Exhaust
    Fidanza Cam Gears and Clear Covers
    3rd Gen Lifters
    K&N FIPK
    Maximal High flow converter
    Walbro FP & FuelLab FPR
    Maximal and Seattle Solid Mounts
    All -6an Lines
    Custom -6AN coolant neck lines
    AWS/ABS/Cruise Delete
    MP Rear Control Arms
    SS Brake Lines
    99 Front Conversion
    2nd gen Rear Bumper
    99 Combat Wing
    Complete interior LED Swap
    Skillard Fuel channel
    Oohnoo FPR Bracket
    More to Come......


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
The 3000GT/Stealth/GTO Web History Project
3000GT / Stealth International WWWboard Archive
Jim's (RED3KGT) Reststop
3000GT/Stealth/GTO Information and Resources
Team 3S
3000GT / Stealth / GTO Information
3000GT/Stealth/GTO Clubs and Groups
Michigan 3S
MInnesota 3S
Wisconsin 3S
Iowa, Nebraska, Kansas 3S
North California 3000GT/Stealth
United Society of 3S Owners
3000GT/Stealth/GTO Forums
3000GT/Stealth International
3000GT/Stealth/GTO Event Pages
3S National Gathering
East Coast Gathering
Upper Mid-West Gathering
Blue Ridge Gathering