turbo upgrade

**vwturbo** · April 30th, 2004 06:04 AM

2001 VW 1.8T
nasira yung turbo ko last week, I noticed a drop in boost then after I was not getting any boost, zero and I hear a grinding noise, sabi ko **** sira yung turbo. I went home then started to take apart my turbo after cooling her down.
here is the picture of the busted turbo
the shaft turbine would would move in and out with some bent fins and there was a oil in the turbo inlet pipe, - busted seals.

the stock turbo eh ko3 sports

eto yung pinalit ko ko4_01 240hp/260ft/lbs , took me 6 hours to un-install/install

driving impression
1st test drive with the stock n75 boost valve, I was spiking 21 psi, 13psi to redline (I'm getting 17psi boost spike with the stock n75 boost valve and stock turbo)

2nd test drive with the n75 J boost valve(race valve) spiking up to 24 psi, boost spoolup starts early at 2000rpm, peak power around 4000-6000rpm, gobs of torque

**vwturbo** · April 30th, 2004 06:13 AM

current mods
upsolute chip
n75 J race valve
3" Atp downpipe
2.5 " Techtonics catback exhaust
k&n filter
bilstein sports
b$g coils
schrotch rallye four harness

**empy** · April 30th, 2004 08:05 AM

nice! ika nga, "when life hands you lemons, make lemonade!"

how quick do you think your setup will do 1/4 mile?

it seems kinda bs that your turbo would completely fail after 3 years, even with boost mods.

**woodfire** · April 30th, 2004 10:12 AM

Why not install a turbo timer to protect your uprated turbo?

**odell** · April 30th, 2004 04:10 PM

turbo turbo!! gusto ko tuloy i turbo un alfafa ko. hahaha

**vwturbo** · May 1st, 2004 02:41 AM

well the stock ko3sports on the 2001 model is rated 150hp/150ft/lbs torque, when I chipped the car it raised the boost from 8psi to 1 bar(14psi) with spikes to 20 psi, plus the 3" dp & n75 boost valve raised the boost so basically the turbo is maxed out or is running beyond it's efficiency range I calculate it getting 192-200hp. The 2002 to present models boost have been raised to 10-11 psi which bumps them to 180hp. With mild software upgrade I could easily get 240hp/260 ft/lbs torque.
turbo timer is my next upgrade although I now let it cool down for 2-3 minutes. A stock 1.8T with ko3sports runs mid 14secs, meron ibang naka ko3sports with boltons running 13.5 secs, I was planning on taking her to the tracks this friday kase merong club clash pero nag-iisnow dito ngayon.

here is a sample dyno plot ko3 vs ko4, look at the torque. this is whp

**empy** · May 1st, 2004 04:07 AM

impressive. and all of it at 3000 rpm.

those jettas with ko4's running mid-13's...they must be modded with much more than a turbo swap, no? 13.5 is M3/Corvette territory.