1990 Pontiac Grand Prix Turbo Walkaround/Drive-bys/etc
To be edited.
History, specs, other pub facts:
Forums: http://www.w-body.com/ (more active) and http://tgpforums.com/
3800 Series 2 Modding Basics
Mods and Vendors list
Short Stack Intercooler
UD Water Pump Pulley
UD Alternator Pulley
Solid Motor Mounts
3 Inch Downpipe
Shortened Dog Bones
Rear Strut Tower Brace
Aeroforce Scan Gauge
3 gauge Pod
Throttle Body Heat Shield
Throttle Body Spacers
Ebay user "American Superchargers"
Modular Pulley System
All other parts not listed were purchased at various auto parts stores,Ebay
users I dont remember and Walmart.
Installing an eBay 20g
I'm reviewing an ebay 20g TD05 internally-gated turbocharger. You've seen me open it, assess it,
and port it. Now I'm going to install it and see how it fits on my car.
Its dimensions are close enough to a Mitsubishi turbo that it fits well, but it didn't play nice
with my aftermarket stuff as the video illustrates.
You'll see what I mean...
The wastegate actuator nipple aims straight toward the compressor housing,
and I don't like it. I fixed it with a pair of pliers and an allen wrench
at 5:55 in a way that's far less likely to break it. The flanges and bolt
centers lined up fine and without any issues, though others have claimed to
have had them with this turbo. The
compressor cover is an obvious giveaway regarding identifying this turbo. It does not wear the cast-in designation
TD05H that the Mitsubishi turbos do, but
for $228, what do you expect?
If you chose to go this route, just manage your expectations. Be aware
that it might not bolt up perfectly to your particular car, and be willing
to fix what isn't perfect.
Porting an eBay 20g turbocharger
The price of this turbo will make it a
popular purchase, so I figured I'd air out some tech about ways to improve
it. This thing is not for everybody. I wouldn't feel comfortable bolting
it on my car the way it comes out of the box. I could complain about its
flaws except that so far absolutely none of them have been a deal-breaker
for me. To me it's like an empty canvas. I promise to eat those words if
it happens, and share my poop. Usually I can easily correct these flaws
myself and so can you.
If this thing turns out to perform well with what I do to it... It could
easily be a cheap, quick ticket to an 11-second car. Something you could
do with a free running 1g, a hacksaw, and about $500 worth of fuel
upgrades. Yeah, that would be ridiculous, and I'm bolting it onto a
well-modified car... But that being possible speaks volumes for what a DSM
can really do.
This is no big deal to me. I'd rather guinea pig my car for you in HD so
you guys can decide whether or not you'd spend your money on this. Really
it's an experiment because this isn't my daily-driver, and it contributes
to building a better Colt.
Tools I used involve:
Milwaukee model ???? 1/4" straight-shaft electric DIY grinder
Cone and ball-shaped double-cut burs
180 grit high-speed flap wheel
Dremel with a flex-shaft and a tiny 320-grit flap wheel
a zip tie
10mm combination wrench
tiny flat-blade screwdriver (00) for the e-clip on the wastegate
Twincharged GTP Running 12psi
My Twincharged GTP Running 12 psi (About 400hp) on the new engine and
tranny...... Not as strong as 17psi (500hp) but still feels good !!! This
is without the bypass valve. It's less laggy this way...
Grand AM GT turbo 3400 12.3 pass
This is the first track day for our 1999 Pontiac Grand Am GT racecar. This
pass was a 12.3, with a 1.78 60' ft. To learn more about this car, or to
contact us for your 3400 turbo kit,