98 GST vs 225 hp TT

dafunk64 · Jun 27, 2002

are those gt-30s the ones with like half motor??, ive seen them at forced performance, i think they might start making those for dsms too

Newspimp · Jun 27, 2002

The GT-30 is a new style turbo from Garrett. It's got a T04-S compressor housing, watercooling, dual-ball bearing with a 360 degree thrust bearing. the exhaust housing is a T3 style, for good spool. ANother big aspect of it is the varible vane technology, which adjects the angle of the impeller vanes depending on the spool and requested output boost.

Really cool turbo. Supposed to be fully spooled by around 3000 rpm, which is close to what I'm used to. I'm used to full boost at about 2200 rpm

BadDSM · Jun 27, 2002

Interesting

Newspimp said:
The GT-30 is a new style turbo from Garrett. It's got a T04-S compressor housing, watercooling, dual-ball bearing with a 360 degree thrust bearing. the exhaust housing is a T3 style, for good spool. ANother big aspect of it is the varible vane technology, which adjects the angle of the impeller vanes depending on the spool and requested output boost.

Really cool turbo. Supposed to be fully spooled by around 3000 rpm, which is close to what I'm used to. I'm used to full boost at about 2200 rpm

Is this turbo a bolt on?
Requires a new manifold?
What supporting modifications besides exhaust etc?
Fuel injectors and fuel computer?
I have seen performance FWD axles advertised for the 00+ 1.8T for 300hp applications.
Have people seen failures of their driveshafts as they increase power?
Know thine enemy.

Newspimp · Jun 27, 2002

Re: Interesting

BadDSM said:
Is this turbo a bolt on?
Requires a new manifold?
What supporting modifications besides exhaust etc?
Fuel injectors and fuel computer?
I have seen performance FWD axles advertised for the 00+ 1.8T for 300hp applications.
Have people seen failures of their driveshafts as they increase power?
Know thine enemy.

Turbo is not a direct bolt on. It does require a garrett style manifold, and an external wastegate (tial 40mm for me)
Supporting modifications will be a SAFC, boost controller, upgraded injectors (640cc), 4 inch intake tract, with a custom MAF, full 3 inch turbo back exhaust, and a spearco frontmount, 18" by 36" x 3", 3 core. Also when installing a front mount, I will be using the intake manifold from the 225hp Quattro Audi TT, as it flows better and has the throttle body on the opposite side of the engine bay, so I won't have to run a whole bunch of piping. Keep it simple.... That and after the forged motor buildup (read last paragraph here) it will have a nice 150-200 direct port system with a NX N'TerCooler system (got a hookup on good prices for NX systems).

Regarding the driveshafts, I haven't heard of anyone on our forums (20vTurbo.com, DubSpeedRacing.com, and VWVortex.com) breaking driveshafts yet, but I'm sure it will happen after a certain point. Billy Tylaska (currently the fastest 1.8T, with 408whp currently on a T3/T04E setup, with APR chip for programming) has made several passes with extremely high power (for our relatively unknown engines/cars) and hasn't gone through any other driveshafts yet. He's also on a 100% stock bottom end, 100% stock engine internals.

This turbo's prime efficiency is from about 12psi to 35 psi. With proper supporting modifications, it is rated to support 550hp, at 15psi, according to Garrett. I will be running 10psi on stock bottom end, and once I have to motor out and being massaged properly, it will be at about 30-32psi. That will be after a bit, on a forged 1.8T block, stroked to 2.0 liters. Stock block is rumored to hold around 450-500 hp, but then Billy's got a corrected 466 crank using a 12.5% drivetrain loss calculation. So I guess we'll see

The shop who's working with me on the turbo system is aiming for 600whp, at which point I just may have to invest in a Audi TT quattro AWD system, which bolts stright on, with a bit of floorpan modifications.

Why all this? Cause the look on someone's face when you, in a four door family sedan with a baby seat in the back (no baby though; that'd be stupid), blow past them like they're standing still is a GREAT feeling.

BadDSM · Jun 27, 2002

Wow.

That sounds like a killer plan.
Please keep us updated as to your times that you are getting as your mods progress.
Have you been to the track yet?
I wish I had the ability to spend 10 k+ on mods after spending 20K+ on a car.

Newspimp · Jun 27, 2002

Well, ideally it won't be over 10k, but who knows. The most expensive part will be the AWD conversion, and I'll do that only, and I mean only if I absolutely have to.

At the track, before any modifications, on a 91 octane program and bald stock tires, I got a 14.6

The biggest problem is that the nearest 1320 track is two hours away. In texas heat, it's not good on an intercooler

I should be around a 14.0 - 13.8 right now.

BadDSM · Jun 27, 2002

Newspimp said:
Well, ideally it won't be over 10k, but who knows. The most expensive part will be the AWD conversion, and I'll do that only, and I mean only if I absolutely have to.

At the track, before any modifications, on a 91 octane program and bald stock tires, I got a 14.6

The biggest problem is that the nearest 1320 track is two hours away. In texas heat, it's not good on an intercooler

I should be around a 14.0 - 13.8 right now.

Trap speeds?

Id imagine if you were to run a 13.8 on a fwd Jetta you would have to be trapping over 100mph.

Newspimp · Jun 27, 2002

the 14.6 run was a 95.6mph trap speed (as I recall, I'll have to locate the slip to be sure) but generally I average about a 94-95 trap speed..

Since most of my mods lately, I haven't been to the track, new schedule at work as screwed up my schedule....

A 13.8 for our cars usually nets around a 104-106 trap speed.

BadDSM · Jun 27, 2002

Newspimp said:
the 14.6 run was a 95.6mph trap speed (as I recall, I'll have to locate the slip to be sure) but generally I average about a 94-95 trap speed..

Since most of my mods lately, I haven't been to the track, new schedule at work as screwed up my schedule....

A 13.8 for our cars usually nets around a 104-106 trap speed.

Modifications now?
That is very fast stock especially on 91 octane.
Do you have a wolfsburg edition?
With those trap speeds LS1 Camaro's shoudnt be a problem.
Although obviously that is not on the stock turbo as those trap speeds would indicate around 300 hp.

Newspimp · Jun 27, 2002

Yes, I have a Wolfsburg Edition Jetta. Love the GTI interior, hate the beige on mine....

Mods>
* APR Chip, with updated 91, 93, and 100 octane modes
* Carbonio CAI replica intake
* Straight-piped exhaust after cat
* Tweaked N75 valve (electronic wastegate actuator)
* Sachs Power clutch, pressure plate
* Autotech Lightened Flywheel
* Nitto NT-555R Extreme Drag Radial tires
* Full syntheic fluid flush
* Unplugged MAF for more fuel
* Greddy Type S BOV (not for performance, but our DVs can't hold more than 12psi of boost; currently I run about 16-20psi)

Soon, I'm going to try an electronic boost controller, see how much more I can get out of this acorn-sized turbo. That, a downpipe, and lower intercooler pipe are on order as we speak.

BadDSM · Jun 27, 2002

Sweet!

Please keep us updated as to when you make it to the track with those mods please.

Newspimp · Jun 27, 2002

No, that's a trap speed for a T3/T4 type. A trap speed for a K03 turbo at a 13.5 range is about 100mph-101mph.

Here's the link to the guy with the fastest stock turboed one, and the 13.52 timeslip @ 101mph

http://www.wannarunthatshit.com/pics/drag/13.52.jpg

His mods are fairly simple, and can be viewed here....

http://www.wannarunthatshit.com/HTML/Drews_Mods.htm

He has a 2000 GTI with the smaller K03 turbo too. The 2001.5 and 2002s come with a K03 Sport, which has a K04 compressor section. A good friend of mine in Austin ran his 100% stock 2002 to a 14.3 time. The 2002s got a slightly larger downpipe and reprogrammed ECU from the 2001.5s

BadDSM · Jun 27, 2002

sweet

You are making me excited to go back to the track tomorrow and see what my new setup can do.
Cant have Jetta's beating me now!
JK

Keep us updated please!

Evan

Newspimp · Jun 27, 2002

Will do. Good luck on your setup.
Well, I'm off for the day; heading out to the country to get a little ghetto WRC footage. And to do my laundry

mavisky · Jun 28, 2002

god i wish i could get my car to hook up well enough to get 13.8's

my traps are huge, but no hook off the line

wannarunthatsht · Jun 28, 2002

Newspimp said:
No, that's a trap speed for a T3/T4 type. A trap speed for a K03 turbo at a 13.5 range is about 100mph-101mph.

Here's the link to the guy with the fastest stock turboed one, and the 13.52 timeslip @ 101mph

http://www.wannarunthatshit.com/pics/drag/13.52.jpg

His mods are fairly simple, and can be viewed here....

http://www.wannarunthatshit.com/HTML/Drews_Mods.htm

He has a 2000 GTI with the smaller K03 turbo too. The 2001.5 and 2002s come with a K03 Sport, which has a K04 compressor section. A good friend of mine in Austin ran his 100% stock 2002 to a 14.3 time. The 2002s got a slightly larger downpipe and reprogrammed ECU from the 2001.5s

Thanks for the props Pimp. But a correction. Im driving a 2001 with a k03 sport turbo.

Drew

Newspimp · Jun 28, 2002

Ooops. Sorry bout that.

98 GST vs 225 hp TT

dafunk64

Newspimp

BadDSM

Newspimp

BadDSM

Newspimp

BadDSM

Newspimp

BadDSM

Newspimp

BadDSM

Newspimp

BadDSM

Newspimp

mavisky

wannarunthatsht

Newspimp

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