What turbo are you using????

[pgringo]

how about holset vs. vnt (or vgt) or whatever you want to call them?

i'm asking for my project car that will be a weekend fun car, not a daily driver.

[anders]

I think the next turbo I would try is a T3/T4 hybrid with .63 hot side with the F1-57 wheel, with a T40E compressor housing 46 trim in a ball bearing package. I think the drive pressure would be low and would still boost fairly quick.

[michaelovitch]

Originally Posted by pgringo

how about holset vs. vnt (or vgt) or whatever you want to call them?

i'm asking for my project car that will be a weekend fun car, not a daily driver.

As i know a vgt spool a way sooner at lower rpm but need an actuator to move the specific mechanism.
electrical mechanical vacuum operated whatever it is it must be piloted.

you could use the throttle thing where the cable is attached, there is an empty cable emplacement.

i've thought to a vgt yet that's seems a good idea.

[ian2000t]

I've been reading up about VGT/VNT turbos, and apart from the vanes sticking they seem a very good idea - obviously why in a modern TDI you hear them spool up as soon as they pull away.

I always feel my D24T is starved of air a bit at low revs, and would be a bit more efficient with a few psi at 1500-ish revs.

Apart from the vacuum device to switch the turbo from "small to large", would it be easy to fit one to a D24T? Maybe from a VW TDi (PD 130)? Or would the flanges on the turbo all need modification?

[michaelovitch]

Even if you can adapt them quite easily ,they are very small and the flanges are quite simple to do, you will not have an adapted turbo from a 1.9 l engine.

they spool very soon but the turbine and compressor sides are tiny and built to be very responsive only.
they are "out of breath" quite soon wich is not the case of a d24.

1.9 run on torque that's why they have a 6 speed gearbox

the d24 is a 2.4 liters that's mean 500 cc bigger and as a 6 cyl (i mean strucuraly) has normally not a big torque on the low rpm.

vgt is a very good idea but a bigger turbo is needed imo like one from a v6 tdi for ex

[anders]

Has any one else done the math for turbo sizing? I want to see what somebody else came up with. I did some math for 200HP@ 5000RPM and needed 25 lbs/min with a pressure ratio of 2.2. ( that maps great on a TO4E housing 40 or 46 trim)

I have seen some VGT turbo's controlled mechanically from boost pressure.

[michaelovitch]

You don't have 30 billions answers.

If you did the math for your specific goal you're good.

http://www.turbobygarrett.com/turbob...choosing_turbo

Did you try this method ?


200 hp ?
do you plan to use it as a daily driver ?

May i suggest you to work on the head too.

you have quite a potential in this head work

[anders]

Well there will be many outcomes depending on intake temp, BSFC (could not get the specific on this motor) and VE ( not sure of the specific on this motor either). Just looking to see what others came up with and what they plugged in
Does any body know the BSFC and VE of the D24T?