Getting Exhaust done (and turbo discussions)

[gregozedobe]

well in that case my TDI's turbo has NO CHANCE of the vanes getting stuck

Nor mine (and my RS's turbo wouldn't either, not that it has a VNT).

[Buller_Scott]

cogdoc, thanks for the detailed reply. thats awesome.

i was aware of the VNT needed a good kick in the pants from time to time to prevent the vanes sticking, and i also read (on this site) that a good way to run in a new car was, once warm, to drive spiritedly out of it- which i do on the weekends (weekdays when the car was new, 2-3 buller trips a week).

thanks for the info regarding the runaway situation on a tdi engine. now i finally know what the term entails.

i think my replacement will be another vnt15.

Cheers!

[Greg Roles]

Scotty, I'm planning on pushing my stock turbo, yet I am not worried about it. Perhaps I'll have to rebuild it early ( you replace "bearings" and the shaft ) and at that point, which I expect to be well over 100k, more like towards 200k, I'll probably look around as to upgrades from the vnt range, preferably with real ball bearings. Garrett indeed have an immense range. Rebuilding a turbo is straight forward really. Few moving parts!

[GoLfMan]

Scotty, I'm planning on pushing my stock turbo, yet I am not worried about it. Perhaps I'll have to rebuild it early ( you replace "bearings" and the shaft ) and at that point, which I expect to be well over 100k, more like towards 200k, I'll probably look around as to upgrades from the vnt range, preferably with real ball bearings. Garrett indeed have an immense range. Rebuilding a turbo is straight forward really. Few moving parts!

cant you say VNT22 and 200+hp 500+nm

[Greg Roles]

...and more lag. I'd prefer to fill the lag, than create more for an even narrower rev range mate! Any upsize would be modest for me, but afterall I am doing all my work to handle extra thermal load, however that ends up happening.. Matching turbo's is as much black art as trial and error, and I see a lot of potential with the stock baby just quietly...

[shadowmaker]

Gt2260v gives about 1,5bar already @2000rpm and spools around 1400rpm in a 1.9TDI. A good turbo for 2,0bar and ~250bhp in a 8 valve setup.

According to Garrett studies ball bearings have more drag after 120krpm so not ideal for vnt. For better spool up why not.

[Buller_Scott]

i think i'd be keen to just keep going with the vnt15 (i think they're like 1300aud) as opposed to anything larger- i dont like the idea of TOO much lag, and i have no specific HP figures that im aiming for.

god knows i really dont like the idea of too much wheelspin on a daily. i think vnt15+remap+smart spray systerm+turbo back will be enough for me to have fun without driving becoming tedious or dangerous on icy roads after a day up on the hill(me=tired).

additional funds are gonna be redirected towards suspension & additional sets of wheels.

a big turbo sounds good, but i kinda like the idea of using a vnt15 to capacity (once ive got above mods) and it being fun, rather than having a 17 and having wheelspin at part throttle on wet/ icy roads.

but josh, i will be glad to watch your endeavors with a big turbo, if thats what you're going to be doing

[Greg Roles]

You'd be very happy with that Scotty. Same old turbo tricks, even more necessary in a diesel. Air in, exhaust out, keep it cool, up the boost.

When you go beyond injectors, and start swapping turbo's I feel you enter the danger zone. Fine if you have a backup car, not so good if it's your daily like me.
Perhaps one day I'll go to the dark side like you Shadow, and become seduced by the evil ways of the boost.

I know I'll be happy with what's possible out of the vnt I have for now.

[Buller_Scott]

You'd be very happy with that Scotty. Same old turbo tricks, even more necessary in a diesel. Air in, exhaust out, keep it cool, up the boost.

When you go beyond injectors, and start swapping turbo's I feel you enter the danger zone. Fine if you have a backup car, not so good if it's your daily like me.
Perhaps one day I'll go to the dark side like you Shadow, and become seduced by the evil ways of the boost.

I know I'll be happy with what's possible out of the vnt I have for now.

cheers for the info man, its hugely appreciated.

i definately dont want to compromise any aspect of the car being a reliable daily, and a daily that keeps going and going and going, at that (with regular maintenance etc etc).

ive only ever driven petrol before, and im addicted to diesel torque, so the icing on the cake will be the few modest mods i've listed above.

cog, are you chipped?

[Greg Roles]

Nope, it's the last thing I'll be doing, but it'll happen.