best turbo

[Han Solo]

has anyone tried a t3/t4 setup? how well would that work with the standard t3 flange and .63 a/r turbine?

would the boost come in at a low enough rpm to really get into it?

id imagine it'd make for a good deal of boost

[jtanguay]

The preference of turbos vs. superchargers is due to the fact that the added boost from a turbo is "free" energy recovered from exhaust heat (makes the engine 10% more efficient) and, in contrast, the added power produced by a supercharger costs energy by being a direct drag on the engine.  

i just started reading this thread but for someone who obviously has technical knowledge involving turbo chargers and VNT control systems etc. your comment stating turbos make engines '10% more efficient' seems silly as even a turbo noob would know the exact efficiency is dependent on much more than just the fact that there is a turbo present. its especially ridiculous considering you are quick to point out others comments as foolish if the technical content is not in line with your opinion.

that said, hi. im relatively new here, as well as to diesels and i just figured i would get my initial jerkface post out of the way. i would also like to say i have enjoyed your thread on the gt2559v retrofit to your mercedes and it was some good reading for me and the boys at the shop.

j

regardless, the fact is that turbo's make the engine 10% more efficient.  no opinion there.  you might say "hey the engine is just pushing more air into the motor.  without extra fuel you won't make 10% extra power!" but... it is just 10% more efficient.  efficiency does not have everything to do with power etc.  

Seems like the turbo motor is more like 20% more efficient, but not quite..


i'll stand by VNT any day after seeing Tintin's video's.  i'm also wondering about the feasibility of running water/meth injection to help clean and prevent the vanes from coking, sticking, and seizing up.   couple of high boost runs with water/meth injection every once in a while should do the trick  :wink:

well /hijack  :wink:

[zukgod1]

This has been a blast to read through.

Living @ 4500 feet and running a k24 has it's issues.
Even throwing ass loads of fuel in there is a problem.
At freeway speeds (75mph) I'm running about 4-5psi, (laggy pig) while in 5th gear. If I push on the go peddle all I get is allot of smoke, I mean James Bond kinda smoke, it will spool in a short time but right now the clutch wont hold above 20psi.

In lower gears off the line once I get it to light it's scary fast but once on the freeway I'm hosed.

Anyway, in my situation a VNT20 with the mechanical linkage would be great, if I could just find find one..

[quietmission]

VNT20 with mechanical linkage, very cool !  Tintin is working on my setup :lol: .

[jimfoo]

My 17 will make at least 15 psi if I floor it at 2k rpm. I need to adjust it as I was running 18 before. It comes on very quickly. I am around 10 PSI at 65, though I have to push a lot of air, and I'm at 3k rpm at 65. That's cruising on a flat road.

[Gearhead]

I have a VNT20 coming.  I just need to figure out what engine I want to stick it on.  I'm still undecided.  1.6, 1.9, IDI, M-TDI.. Right now I have a tired 1.6NA.  Anybody have a buildable engine they want to sell?

[smoken u]

would be cool to see someone do a compund turbo setup. use a K-14 for quick spool and then feed that into a K03, would take alot of time and some framulating, but think of the results :twisted:

[dogday]

I have been offered a brand new turbo at a stupidly low price - the guy says it's a water cooled Garrett TB0303 - any good for my AAZ?

Or is it too 'big'. Still learning on turbo's, just don't want to miss out if its good.

How does it relate to my K3 in terms of spool up & boost?

The compressor is A/R 0.42 & the exhaust is A/R 0.63. Apparently.


DD

[subsonic]

A .63 a/r turbine(hotside) will produce boost at a later time.  You will need much higher rpms for it to work, like 3500-4000.

That being said, I would certainly not turn it down.  You can always sell it later or modify it to work for your application.