npr turbo in a 3b engine

[Spallet]

Can you use it in a Bj75?

[polarweasel]

Are you asking about using the turbocharger off of a 4BD1T (or whatever) on a 3B, or what? More specific questions are more useful.

[Spallet]

yes the turbocharger 4bdt..will it work in a 3b engine,,, boost in the rpm range?will it fit into a 13bt exhaust manifold or a turboglide manifold?

[Dougal]

The NPR name as a truck series has been used for about 22 years now.
Some of the turbos from the NPR59 (4 ton truck from 85-92 which used the 4BD1T) would be suitable but there are three.

IHI-RHB6.
Wastegated T25
Freefloating T25 with a T3 mounting flange.

The first two would work very well, but the third would be a little large and will start to boost later in the rev range. The third may also need an external wastegate to prevent overstressing your engine (to limit boost).

[Tapage]

Dougal .. you thought the T25 could be bigger for 3B engine ?

[Dougal]

Originally Posted by Tapage

Dougal .. you thought the T25 could be bigger for 3B engine ?

I think it'll be about perfect.
My engine is larger, but lower revving so total air consumption is the same.
The turboglide kit that Eblanc is using has a T25 turbo.

[Tapage]

Originally Posted by Dougal

I think it'll be about perfect.
My engine is larger, but lower revving so total air consumption is the same.
The turboglide kit that Eblanc is using has a T25 turbo.

I thought the T25 will be perfect for 1HZ engines range ( 4.0 4.2 ) .. here a buddy it's plannyng GT28 for he's 1HD-T

[Dougal]

Originally Posted by Tapage

I thought the T25 will be perfect for 1HZ engines range ( 4.0 4.2 ) .. here a buddy it's plannyng GT28 for he's 1HD-T

Depends what you want from it. A T25 on a 1HZ will give great low end, but will strangle it above about 3500rpm.
The GT28's would be great for the 1HD, but the GT28 series covers a huge size range now.
The old T2860 is now called a GT2560. It'd be good for those wanting a 1HD with lots of low end torque.

[Tapage]

Originally Posted by Dougal

Depends what you want from it. A T25 on a 1HZ will give great low end, but will strangle it above about 3500rpm.
The GT28's would be great for the 1HD, but the GT28 series covers a huge size range now.
The old T2860 is now called a GT2560. It'd be good for those wanting a 1HD with lots of low end torque.

Start Offical Hijack ..

Dougal in your concept .. which could be the best toption to make a 1HD-T engine fly ..

This engine it's stock .. rebuild recently with the besto parts available ... so it's in great shape right now .. and it's boosted 14 PSI with the factory CT-26 waiting for a custom intercooler .. and after a new turbo ..

Justo to get the boost up to 18 - 20 PSI

Hijack over !

[Dougal]

Originally Posted by Tapage

Start Offical Hijack ..

Dougal in your concept .. which could be the best toption to make a 1HD-T engine fly ..

This engine it's stock .. rebuild recently with the besto parts available ... so it's in great shape right now .. and it's boosted 14 PSI with the factory CT-26 waiting for a custom intercooler .. and after a new turbo ..

Justo to get the boost up to 18 - 20 PSI

Hijack over !

Can you measure compressor discharge temps and exhaust manifold pressure?
The compressor discharge temps (with a few calcs) show when the compressor is running out of it's best efficiency zone, the exhaust manifold pressure tells you when you've reached the flow limits of your turbine.

Is the wastegate on the CT26 held shut at 14psi? It sounds quite low, but since hard info on those turbos is impossible to find it could be right.