www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2014 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You



Go Back   TDIClub Forums > FAQs (Frequently Asked Questions) > TDI Power Enhancements

TDI Power Enhancements Archives on TDI Power Enhancement related items.

Reply
 
Thread Tools
Old October 11th, 1999, 05:21   #1
SkyPup
Guest
 
Default GARRETT VNT HOP UP PICS

Here is the end of my hopped up VW 1.9L TDI mit Wetterauer Enhancement, Techtonics 2.5" exhaust, und boosted Garrett VNT15 turbo most often seen by masses of petrol guzzlers:



Here is the boost guage at 16 PSI while cruising at 105 mph on my closed circuit test track (smokin' ) :



Here is the boost guage at WOT in 3rd gear running 26PSI boost, stunning power :



Here is a shot of the 99 A4 VW TDI US engine with my turbo boost tubing installed in the post intercooler line just prior to the EGR valve on the upper left (it is the tiny white plastic tubing line wrapped around the black intake tubing):



Here is the VW-AUDI model Garrett VNT15 turbocharger up close with the adjuster in between the turbine housing on the left and the compressor assembly housing on the right. The serial number and VW-AUDI VNT15 Logo are on the flat section just to the right of the words VNT15 I typed in:



This is the ajustor for the VNT15 that provides all the boost. It closes the nozzle down in relation to torque demand only, pull down for more torque, let up to cruise.:




These are the specs for the Garrett VNT15 turbos:

http://www.alliedsignal.com/turbos/p..._smallfrm.html


Here is a compressor map for the GT series Garretts:

http://www.alliedsignal.com/turbos/p...o/compact.html


Next mod will be some intercooler development work and a Bilstein HD shock absorber suspenison upgrade. Here is the 99 Jetta enjoying itself in the sun:


DON'T BOOST ME UP SCOOTY! THERE IS INTELLIGENT TURBOCHARGED VOLKSWAGEN TDI LIFE DOWN HERE AFTER ALL!!!

Thanks to Fred for all the help in cyperspace and to D'Nardo for getting me started on TDI Performance enhancements in the first place. Also, thanks go to Mickey, Peter, Keith, and Gary for their dedication to all that is TDI.

[This message has been edited by SkyPup (edited October 11, 1999).]
  Reply With Quote
Old October 11th, 1999, 10:58   #2
SkyPup
Guest
 
Default Re: GARRETT VNT HOP UP PICS

This BEAST sure is a *****in' Ride!

------------------
99 JETTA TDI HERR WETTERAUER TORQUEMEISTER
98 KAFER WETT SPEKTAKULARE TURBOKOMPRESSOR
97 KTM 620 ADVENTURE RALLY PARIS-DAKAR SUPER THUMPER
ICH LEBE MEIN TECHORAD VW TDI'S MIT DIREKTEINSPRITZER TURBOKOMPRESSOR


  Reply With Quote
Old October 11th, 1999, 18:34   #3
The Ripster
Veteran Member
 
Join Date: Sep 1999
Location: UP of Michigan
Fuel Economy: 45-50
Default Re: GARRETT VNT HOP UP PICS

Do you ever get up this way with your wrenches ?? Pretty sharp, if you are ever
up this way. Did you remove the cover on
the engine or did it come with one.
Love the wheels and the plate, should
have my personalized DSLTURBO soon.
The Ripster is offline   Reply With Quote
Old October 12th, 1999, 04:05   #4
SkyPup
Guest
 
Default Re: GARRETT VNT HOP UP PICS

I removed the top engine cover and have left it off, however all the other lower covers are left on. I also had and ABD Q-Flow K&N air filter on the MAF but recently put the OEM unit back on with K&N filter in it for cooler air flow to the turbo and less stress on the intercooler. Seems to be about the same overall, but I think the OEM setup for fresh air is important.
  Reply With Quote
Old October 12th, 1999, 05:44   #5
Youry
Veteran Member
 
Join Date: Sep 1999
Location: Louvain-La-Neuve, Belgium
Default Re: GARRETT VNT HOP UP PICS

riding with 25 psi boosty that's something ! But that's something to explose your engine quickly, I would not keep this setup for long, but that;s yoyur car, and youe engine, I've exploded an engine once I don't want it to happen again and that was with just changing the chip on my ex GOLF 3 110 HP TDI to 140 HP (I agree the chip was probably of bad quality as the car smoked like hell) but hat does mean you can explode this engines easily if you are not carefull. i doubt seriously the engine can handle this boost for long....If not I would do anything just to feel the sensation of 25psi during an accelaration on my GOLF IV, wow that must be something....

------------------
Youry
TDI-110HP boosted to 140HP VW GOLF 4 Belgian owner
Youry is offline   Reply With Quote
Old October 12th, 1999, 06:09   #6
SkyPup
Guest
 
Default Re: GARRETT VNT HOP UP PICS

Thanks for the note Youry, I agree with what you've said and indeed this may not be a long term everyday setup for sure, the jury is still out on the absolute compatability of the entire high boost package. Twenty-six psi of boost is very high and creates lots of pressures throughout the entire engine so I may be forced to back off on this set-up as you have indicated. I like to think that a solid 18 psi all the time would be a good acceptable boost range for total all around operation and performance, that may be what I settle for once I become accustomed to this setup. For the time being, it is awesome, we'll see what develops.
  Reply With Quote
Old October 14th, 1999, 06:23   #7
Youry
Veteran Member
 
Join Date: Sep 1999
Location: Louvain-La-Neuve, Belgium
Default Re: GARRETT VNT HOP UP PICS

Just wanted to add a comment, my actual car has a turbo boost gauge like yours (I added it myself) and when I accelerate it goes up to 1.2/1.3 bars (roughly 18psi), but that is not possible in reality, what happens is that it is the inertia of the indicator (it stays there half a second a comes back down right away on 0.9 bars (13 psi) which is the normal figure, so you surely also have that same effect !

------------------
Youry
TDI-110HP boosted to 140HP VW GOLF 4 Belgian owner
Youry is offline   Reply With Quote
Old October 14th, 1999, 06:44   #8
SkyPup
Guest
 
Default Re: GARRETT VNT HOP UP PICS

hehe, not quite! The AutoMeter turbo boost guage that I have is filled with clear liquid OIL, it is the professional race model for very sensitive pressure measurements accurate within 1.0% (in this case 0.28 psi). This guage does not move, flicker, or have any wayward movement whatsoever. In addition, the boost hookup in post intercooler right before the intake manifold so this is ACTUAL DELIVERED BOOST, nothning less.
There is no over surge, only real boost. What the guage is reading is what the compressor is producing and what is going into the combustion chambers, make no mistake about it.

BTW, please read my other post about VNT mechanical design and operation, there is alot more going on than meets the eye!

[This message has been edited by SkyPup (edited October 14, 1999).]
  Reply With Quote
Old October 14th, 1999, 06:49   #9
SkyPup
Guest
 
Default Re: GARRETT VNT HOP UP PICS

look closely at the top of the guage photo, it has a line across it a couple of millimeters from the top of the guage, that is the interface of the thick liquid oil with the air bubble on top. In fact, I have to keep a lose screw on top to let air in and out of guage during temperature changes to keep liquid oil from expanding compressed air inside a closed off guage, possibly breaking the glass from too much pressure.
So, no way is this some guage misread, the smoking tires are evidence of that too!
  Reply With Quote
Old October 14th, 1999, 10:03   #10
Craig
Veteran Member
 
Join Date: Apr 1999
Location: Kitchener, Ont., Canada
Default Re: GARRETT VNT HOP UP PICS

Great pix! Ah! No PCV bypass, eh?. One suggestion for future is a technique I use often. After the picture is scanned, import into a graphics package and draw a color arrow (red) pointing to the part you are emphasizing.

I am having trouble figuring out this adjustment from the picture. If you are suppose to adjust the nut what is the knurled part? Or is the knurled part for adjusting? It looks like it has colored paint to mark the spot and stop it from loosening. Is this correct?

Love your boost gage. Looks like a hot rod from the '60s when everyone had a tach on the dash. Have to look into one of these things. Was thinking it would be fun to see the reaction to havingyour Jetta in one of the local weekly hot rod shows we have here every summer. Put up a sign up saying "21st-Century Diesel Hot Rod".)
Craig is offline   Reply With Quote
Old October 14th, 1999, 10:13   #11
SkyPup
Guest
 
Default Re: GARRETT VNT HOP UP PICS

The 10mm nut on the bottom of the knurled adjustor is the locking nut. Moving the knurled adjustor down (turning clockwise to the left) give sensitive awesome boost max increase as well as increased response. Turning the adjustor knurl up (turning clockwise to the right) lowers response and peak boost.
Losing track of how many turns you have screwed it away from OEM setting will guanrantee and blown turbo, motor, or brain (yours)!

Don't screw with it if you can't stand the responsibility of what happens next.

[This message has been edited by SkyPup (edited October 21, 1999).]
  Reply With Quote
Old October 14th, 1999, 14:26   #12
Craig
Veteran Member
 
Join Date: Apr 1999
Location: Kitchener, Ont., Canada
Default Re: GARRETT VNT HOP UP PICS

Thanks. Perfectly clear now!

I can just see it now. TDI owner to Service Manager when getting warrantee repairs: "It must have worked it's way loose or something."
Craig is offline   Reply With Quote
Old October 20th, 1999, 00:43   #13
SkyPup
Guest
 
Default Re: GARRETT VNT HOP UP PICS

Any other TDI fools try to bend a connecting rod or stretch yer head bolts yet? be sure to keep track of the exact turns away from OEM that you make, otherwise you'll be lost in hyper-space!

[This message has been edited by SkyPup (edited October 21, 1999).]
  Reply With Quote
Old October 21st, 1999, 05:04   #14
SkyPup
Guest
 
Default Re: GARRETT VNT HOP UP PICS

Must be alot of TDI wimps and weenies out there since so far only two people have told me they've boosted their VNT's, although I recommended each only one turn. The feedback has been positive, especially the increased noise evident from the supercharged turbo boost ramping up the turbine and compressor under the hood much louder, not to mention the increased response and heavy torque increase. Slap on a TT full flow exhaust system and experience the thrill of a world class TDI running around in a third world diesel nation -> the United States of America
  Reply With Quote
Old October 22nd, 1999, 00:34   #15
mickey
Guest
 
Default Re: GARRETT VNT HOP UP PICS

I'm going to see if I can convince the guys at the Park City garage (who are currently attempting to breath life into my City Jeep again) to let me use their lift so I can try this. Per our conversation, I think I'll stick with 1 turn of extra boost. I'm concerned about over-reving the turbo in the rarified atmosphere at 7000 feet above sea level! (Sometimes nearly 11,000 feet, but that's not an every day thing.)
My goal here is to get a little extra oxygen in the cylinders to cut down the smoking. Performance is already good enough for my tastes. (And bank account.)

-mickey
  Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -7. The time now is 10:47.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2014
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
1996 - 2013, All Rights Reserved
Page generated in 0.17089 seconds with 9 queries
[Output: 109.85 Kb. compressed to 90.62 Kb. by saving 19.23 Kb. (17.51%)]