Thread: Turbos that work on a 4BD1.

Originally Posted by steveG

FWIW - There are a couple of GT2260V's on ebay at the moment. They've been relisted after no-one bid on either of them at the $350 starting price.

Can't tell from the photo what the flange type is. Could be the sort of triangular shape BMW flange which is a bit harder to adapt than a T2 flange but still do-able.

GARRETT GT2260V VARIABLE VANE TURBO | eBay

Steve

Apparently from a BMW X5.
Turbocharger - 753392-5018S, 11657791046 BMW X5 3.0 d (E53)

Originally Posted by Dougal

Apparently from a BMW X5.
Turbocharger - 753392-5018S, 11657791046 BMW X5 3.0 d (E53)

3 bolt exhaust manifold flange.

Tell me about the variable vanes?

Originally Posted by Lotz-A-Landies

3 bolt exhaust manifold flange.

Tell me about the variable vanes?

They are a ring of vanes inside the exhaust housing which change the angle of exhaust gas into the turbine. Essentially it's a variable A/R ratio housing.

So it mimicks a smaller housing for faster spoolup and more boost at low rpm, but the vanes open up to control boost and to allow more exhaust flow at higher rpm.

The end result is the turbo has a much wider operating range.

Originally Posted by Lotz-A-Landies

3 bolt exhaust manifold flange.

Tell me about the variable vanes?

3 bolt flages are a PITA in my opinion that's asuming it's the same 3bolt as found on the turbos used on the td5 engine..... Only thing as I have mentioned before is on the 4bd1 that is heavily fueled I am interested to see if the vanes start to have problems with carbon buildup but as I have also said previously I will still be considering them as an option..
Once upon a time I came across a housing design that had a single flap that closes and opened in the turbine housing to reduce the AR but cannot remember the link

Originally Posted by Dougal

They are a ring of vanes inside the exhaust housing which change the angle of exhaust gas into the turbine. Essentially it's a variable A/R ratio housing.

So it mimics a smaller housing for faster spool up and more boost at low rpm, but the vanes open up to control boost and to allow more exhaust flow at higher rpm.

The end result is the turbo has a much wider operating range.

I found the following link very helpful in understanding how a VNT works. Right at the bottom you can see the vanes in motion.

VNT15-Turbo

James.

The turbo manufactures have devised various methods (probably to get around patents) for variable nozzle geometry to achieve similar results (broaden the useful turbine range).

In case it hasn't been listed already. The stock turbo from the 4BD2T engines.

Garrett TB2568
P/N 466409
Isuzu 8971056180

Also check Isuzu 8943260790

This is a T25 turbo with a 54mm compressor wheel and a 0.67 A/R wastegated turbine housing with a T3 flange. It bolts straight up to the compact Isuzu manifold.

I think these are out of production, but used items and chinese copies are available all over ebay and other shopping sites.

Hi
Is this turbo any good

TO4e Diesel turbo 150-350hp .60a/r (garrett, greddy + others) | eBay