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TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old January 16th, 2019, 21:54   #766
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Join Date: Jun 2008
Location: Sturgeon Bay, WI

Originally Posted by yo87_racing View Post
Hello guys. Need an opinion. I need a bigger turbo for 1.9tdi. Is it a bad choice gt2260v from bmw e60/e90? Is it too old, and maybe more laggy than gtb1756/gtb2260 ( audi or bmw). Thanks!
It would be best to go with a more modern turbo and at the minimum, I'd go with either a GTB1756VK or GTB2260VK depending on what mods you have done to your TDI.

IMO, I'd go with the most current turbo you can buy for the best performance you can get out of a turbo and that would mean going with either a GTD1752VRK/GTD1756VRK or the larger GTD2060VZK.
Here are a few GTD1752VRK/GTD1756VRK options:

If you wanna upgrade to a GTD2060VZ, it will require quite a bit of customization to make it work on a 1.9L TDI.
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Old January 17th, 2019, 01:19   #767
Join Date: Sep 2017
Location: Romania
TDI(s): 1.9tdi AVF

Then I think, I will choose one of the gtb series. 1756/2260. I was thinking that using gt2260v it might not be the best choice, being old technology, but I needed at least one more opinion. But what about KKK 2260 from audi? I saw it's full of them, even more than garrett? I was looking for garrett and found almost only kkk. Are they failing at high boost, or they cannot even load hi boost? Thanks!!!
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Old January 17th, 2019, 06:09   #768
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Location: Bucuresti

Originally Posted by Turbo Z View Post
Thanks Ionut!
Did you for got something useful information about VNT in 1858-970-0003?
hope now is ok
Turbo Size Matters !
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Old March 7th, 2019, 10:35   #769
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Location: nederland
TDI(s): vento afn

Originally Posted by [486] View Post

Just getting rather sick of replacing thrust bearings in my HP turbos. GT25 does not like gulping down pressurized air. Nor does TD04. Figure a ball bearing will live longer, and a stock application
What PR is your LPT pushing ?
And how many milles did your HPT last ?
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Old March 7th, 2019, 11:33   #770
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You can get ball bearings in the GT25 frame size. Probably just need to get the CHRA and move over the wheels and housings.

Garrett's Z-bearing technology may help too.

The permanent solution is to bypass the HP stage at the top end.

TDIMeister's German-imported 1998 Audi A4 Avant TDI quattro

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Last edited by TDIMeister; March 7th, 2019 at 11:38.
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Old March 7th, 2019, 16:37   #771
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TDI(s): 02 golf ALH
Fuel Economy: 42 stock, 47-49 now

why do sequential when I can do straight compounds? Whole reason I went with compounds is to get the breathing there without needing to buy a camshaft.
Originally Posted by GOFAST View Post
What PR is your LPT pushing ?
And how many milles did your HPT last ?
LP is making 25 PSI, HP bumps that up to 45
iirc the interstage WG is sprung for around a PR of 2? Just the thrust load with the increased airmass is too much.
Got maybe 10k out of the old bearings in the turbo, haven't checked on the new set yet, but they've got about another 10k on them. Got a VF27 on the shelf, just gotta get it jammed on there, after the insight swap is running... Ugh, projects.
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