Anyone know what size the compressor is on a HX35W turbo? I know the turbine housing is 12. Thanks

 

54mm I believe, although I think the 12v trucks had a larger one, around 57 or 58mm.

 

Yes, the 24v are slightly smaller. You can identify them by the compressor mounted wastegate actuator.

 

Is there a noticeable performance difference between the two compressors?

 

the 1998.5 24V compressor is a 54 and the base is a little bit smaller. It was made to flow just as much but spool up faster with less rotational weight to clear up the low end a little bit faster.

 

What is the exducer size on an HX35 compressor?

 

That's what *I* want to know, too--

HX35 compressor exducer size anyone? Beuhler?

 

Well I just thought about it, I have a destroyed HX35 in my garage lol. I'll go see if I can figure it out...

OK on the HX35 I just measured I couldn't find the wheel (I think it was in several pieces) but the center section's groove was 2.832" that accepts the wheel. So the exducer I geuss would be around 71mm right?

 

Sounds about right to me...

 

Hohn, I wonder how a GT4082 would compare to a stocker in flow and spoolup with a .68 a/r turbine housing?

If a minute or two I will go measure the same groove on an HX40 I have here as well... For comparison sake...

The same groove on the HX40 I have is 3.020" if that helps anyone...

 

I thought the hx35 had a 58mm compressor wheel and the hy35 had the 54mm compressor wheel. I just had my hy35 rebuilt and it had a 54mm wheel in it and they put a 58mm wheel in it

 

I'm not impressed by the 4082's map at all. It's capable of higher PRs, but it's SO NARROW that's it's essentially useless imo. At a PR of 3:1, it's only 20lb/min wide! This is a very special application turbo, and I doubt that CTD is that application where this would work.

Spoolup would be OK, but drivepressure with the tight housing would be high.

I think all around the 4082 with a .68 housing would be a miserable turbo setup. Far better to drop down to the 3782 imo, or even a 3582. The 3582 will spool yesterday, buyt you'd need an adapter for the open T3 (undivided) "foot." The 3582 is a smallish turbo too, but should spool really fast-- basically the .82 housing spools 17% faster than the GT37 stg 1. You're talking about essentially a "zero lag" setup with the 3582. It's unfortunately a little too small to be worthwhile unless you are building twins in the 400hp range and want to use it as the secondary.

I've looked up a lot about the Garretts, and I think that it's best to stick with the "packaged" ones for our trucks: the stg1, 2, or 3--unless you are planning on building larger twins for sledpulling or racing, and will use a T4 manifold.

JMO

 

Wouldn't that be the same kind of flange as the HY35 then?