holset hx35w - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

waxer52 · 31st August 2008, 02:14 PM

I have been offered a hx35w (internal wastegate) turbo for my rb30 build. Just wanted to know has anyone tried and tested a hx35w on any rb engine and what sort of power they make.

I will be putting this onto a standard manifold for now and with standard rb30 refreshed internals.

I want roughly 500hp for now anyway.

Lith · 1st September 2008, 02:53 AM

I don't know of anyone who have used one on an RB but I believe they tend to be good for around the 500hp mark on a petrol motor with pretty decent spool, depending at least on turbine housing. I'd be wary of the internal gate setup though as I have it in my head that some of the diesel turbos can come sprung to some silly boost levels.

waxer52 · 1st September 2008, 06:28 AM

Surely the actuator can be modified to lower boost levels, or possibly modify a hks adjustable one to fit.
I am also hoping I have enough space to fit the turbo!

SamuraiSam · 1st September 2008, 12:13 PM

It is a waste of time to bother dicking around with the Holset's internal wastegate. Purchase a non-wastegated turbine housing- they are very inexpensive.

On another note, any form of HX35 will be too small for an RB30 in my opinion. Search this forum for "Super 40" and you'll find more information on better-suited inexpensive Holset turbos that will work for you.

waxer52 · 1st September 2008, 06:43 PM

Whats the biggest turbo that can fit on a standard rb25det manifold.

Lith · 5th September 2008, 02:44 AM

I thought hard about an HX35W but decided it looked like it'd take up too much space and ended up going for a GT30R. The GT30R doesn't even strictly speaking fit there, I have a 10mm spacer to move it away from the block a bit as the compressor housing fouls it a bit. I reckon a T04Z would be possible there, though it would be a waste of time as the factory manifold starts become a huge restriction at much over 400whp.

31st August 2008, 02:14 PM	#1 (permalink)
waxer52 GTR Register Member Join Date: Jun 2006 Posts: 49	holset hx35w I have been offered a hx35w (internal wastegate) turbo for my rb30 build. Just wanted to know has anyone tried and tested a hx35w on any rb engine and what sort of power they make. I will be putting this onto a standard manifold for now and with standard rb30 refreshed internals. I want roughly 500hp for now anyway.

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1st September 2008, 02:53 AM	#2 (permalink)
Lith GTR Register Member Join Date: Oct 2006 Location: Palmy, NZ Posts: 782	I don't know of anyone who have used one on an RB but I believe they tend to be good for around the 500hp mark on a petrol motor with pretty decent spool, depending at least on turbine housing. I'd be wary of the internal gate setup though as I have it in my head that some of the diesel turbos can come sprung to some silly boost levels.

1st September 2008, 06:28 AM	#3 (permalink)
waxer52 GTR Register Member Join Date: Jun 2006 Posts: 49	Surely the actuator can be modified to lower boost levels, or possibly modify a hks adjustable one to fit. I am also hoping I have enough space to fit the turbo!

1st September 2008, 12:13 PM	#4 (permalink)
SamuraiSam GTR Register Member Join Date: Oct 2007 Posts: 390	It is a waste of time to bother dicking around with the Holset's internal wastegate. Purchase a non-wastegated turbine housing- they are very inexpensive. On another note, any form of HX35 will be too small for an RB30 in my opinion. Search this forum for "Super 40" and you'll find more information on better-suited inexpensive Holset turbos that will work for you.

1st September 2008, 06:43 PM	#5 (permalink)
waxer52 GTR Register Member Join Date: Jun 2006 Posts: 49	Whats the biggest turbo that can fit on a standard rb25det manifold.

5th September 2008, 02:44 AM	#6 (permalink)
Lith GTR Register Member Join Date: Oct 2006 Location: Palmy, NZ Posts: 782	I thought hard about an HX35W but decided it looked like it'd take up too much space and ended up going for a GT30R. The GT30R doesn't even strictly speaking fit there, I have a 10mm spacer to move it away from the block a bit as the compressor housing fouls it a bit. I reckon a T04Z would be possible there, though it would be a waste of time as the factory manifold starts become a huge restriction at much over 400whp.