This is a 1.9 head on a 1.6 block, right? Any porting done of the head?
Is the GT20 the same thing as a VNT20?
Thanks for the quick reply, Mark, I was trying to place the GT20 in the pantheon of turbos, and one of my questions was if it had the variable nozzle.
Deck modifications? :shock: Is that the deck of the head or the top of the piston?
hi guys
Marks pump already has the full governor removal mod
when i did his pump it had all the good stuff done
100 % fuel increase over stock with no increase to the no
boost setting.
almost 20 deg pump timing advance
the limitation to the fueling is due to the rotary camplate inside the
pump.
at speeds above 5000 the rollers on the cam start to skip and you
don't get the full pump lift anymore. i have increased the tension
on the internal springs but with the current parts we're using i can't
upgrade to the Cummins return springs.
i can only use the Cummins springs if we upgrade the Head, cam plate
drive shaft and a few other pieces too.
i can only geuss the price of all those parts. maybe $1500
Giles
hi guys
Marks pump already has the full governor removal mod
when i did his pump it had all the good stuff done
100 % fuel increase over stock with no increase to the no
boost setting.
almost 20 deg pump timing advance
the limitation to the fueling is due to the rotary camplate inside the
pump.
at speeds above 5000 the rollers on the cam start to skip and you
don't get the full pump lift anymore. i have increased the tension
on the internal springs but with the current parts we're using i can't
upgrade to the Cummins return springs.
i can only use the Cummins springs if we upgrade the Head, cam plate
drive shaft and a few other pieces too.
i can only geuss the price of all those parts. maybe $1500
Giles
hi again
i have some new ideas about it but i'm not going to share. just to tell
u that i will need a 11 or 12 mm head to use and then change some
other parts to match it
i think that i can do it.
u give me the head, your pump or another one and i'll make u a pump
that will rev 7K!!!!
i'll love to try it.
when i drove bryson's old 1.6L that was dynoed at 125HP and it had no
problem rev to 6K
Giles
hi again
i have some new ideas about it but i'm not going to share. just to tell
u that i will need a 11 or 12 mm head to use and then change some
other parts to match it
i think that i can do it.
u give me the head, your pump or another one and i'll make u a pump
that will rev 7K!!!!
i'll love to try it.
when i drove bryson's old 1.6L that was dynoed at 125HP and it had no
problem rev to 6K
Giles
Quote from: "DutchTouch"Malone,
What GTech model was it? I can't recall a Gtech without "Pro". Here's the product lineup:
http://www.gtechpro.com/prod.html
The Competition Pro (MY 2001) and newer Gteches are more accurate because of RPM calibration, accelerometer calibration, and they show both HP and TQ curves instead of just peak HP numbers. I believe Jake (fpsGTD) has the Competition Pro. I have the Gtech Pro RR. I probably should have gotten the Competition as it's a more economicial choice and seems to work fine.
Gtech Pro SS may not let you upload plots to a computer. FYI to those who read this and is thinking of getting a Gtech.
If talking about a dyno, wheel HP is usually referred to, not crank HP. Crank or brake HP is measured at the engine flywheel. I think vehicle automakers like to tout crank HP numbers instead of the more practical wheel HP numbers because crank HP numbers are higher, which looks better on paper.
Perhaps wheel HP always being inconsistent across different dynos is the reason for using crank HP from the factory. Although the big automakers already have top quality dynos that are accurate but $$$$ to calibrate, not all automakers have them.
Your numbers (avg. ~96 net HP) are very nice with just a 0.205 nozzle upgrade. I have not Gteched an early Passat TDI (just the later TDIs and a couple MK3 Jetta TDIs) but the stock Gtech numbers w/ proper calibration in your car would average 80 net HP.
Gtech is most useful for comparing before/after modifications. Keep your Gtech results in mind, and next time if you get a chip or other mods, you can do another Gtech run with the SAME CALIBRATION to see the actual improvement.
*edit: I estimate your current wheel HP to be 105-115.
Cheers,
Malone.... Been out doing the Steelhead flyfishing thing here in Nor California.... sorry I am so slow in getting back to you.
The Gtech Pro was the 1994 model... and I got ahold of it again and got popped by the cops... The darn thing is addictive, I shouldn't be doing what I was on streets in Los Angeles. Air temperature seems to play a big factor in what I get for HP, as well as fuel. While the air is denser in winter... I had some summer fuel saved in a 55gallon drum that I ran... I'm seeing 100 to 103 hp with that in the tank, and when I run fresh Arco ULSD which is now winter blend, the Gtech is showing 90 to 95 whp. What is up with that? That's like 6 to 10% difference?
One other thing... the summer blend on a cold morning with the engine warmed up smokes like a coal powered steam engined train. Temps are in the mid 40's late night when I do my runs. But damn... I can really feel a seat of the pants difference in the fuel. Maybe it's temperature density differnece for my fuel or my fuel temp sensor in my Bosch VE?
I like to play with the mpg competitions on Fred's and my fuel mpg with the winter blend sucks... I've lost like 6 to 8% on my mpg with the winter blend fuel. The stuff just doesn't make as much power and the mileage goes down with it too.... I may as well be running biodiesel.
Great thread.... Man I hope you can get 6500 rpm and 160hp from a TD... that will be a major accomplishment in a VW IDIi TD 1.6.
I had a hard time with shipping getting Smog's nozzles into the USA.. the customs folks were tough to to appease... but he sent me a set of VEG 205's and whatever they are... Lordy do I like what they do for my car.
I went to a GTG here in Los Angeles yesterday... Got a ride in a rare Made in Germany 99.5 Golf Coupe with PP520's and one of your chips... The young man brought dyno slips... 139 at the wheel and 292 ft/lb's of torque. The turbo was spiking at 22 psi on his gauge.... this was the day before his Dawes device arrived. He runs it now at 18. What ever chip he has that you did for him... it is kick-azz for a TDI, just really impressive 60 to 80mph figures for safely passing a tractor trailer rig on a 2 lane highway here in the USA.