hx-40

[DSM_brother2]

where do i get a hx-40? what do you guys think of them?

[96GST16g]

i have one of these pm me if interested

[4g63tcrazy]

The only thing is oil pressure. You have to be VERY accurate with how much oil you're giving them. That is why a lot of people have problems with them.

This is your answer. Don't guess. DSMs kill SO many journal bearing garrett, BW, holset turbos. Because they are all more sensitive to oil changes and especially over oiling. And DSMs change their oil pressure per setup, rpm, motor build, oil pump age, Bshafts, oil pump years, oil cooling, hair part, shoe lace orientation, etc. FAR more than any other engine on the planet. PTE has a bad rep because of sh!tty DSM oiling problems. Its DSM oiling that sucks, not PTE (AKA garrett center sections). It's not the manufacturers fault. Its the haphazard, random oil pressures that dsms run on various setups.

Use any gauge: oil gauge, old fuel pressure gauge, old air compressor gauge, old water pressure gauge for home water feed lines, who cares. Get SOMETHING on there after the lines and restrictions to actually see what your oil pressure is. Rev the motor in neutral and find out the oil pressurea at idle, theoretical spool up rpm, and peak oil pressure (should be at redline). Per the holset repair manual for the hx35/hx40: Warmed up, the oil pressure for the hx35 and hx40 should be no less than 10psi at idle, and no more than 72 psi. It should be no less than 30psi at spooling time and after. A bolton hx35 sees 20psi at about 3700rpms and spools damn early so you had better have 30 psi at 2K or you could be eating turbo bearings. An bolton hx40 sess 20 psi as early as 4K on a 2.0L motor. Check your oil pressure. As stated, you MUST have 30psi during spooling up conditions with these turbos. And you cannot have more than 72 psi pressure at full song.

Best post ever made for anyone looking to buy a holset!

[DSM_brother2]

sweet! thanks good to kno!

[jrohner]

I've gotten two H1C's on ebay for great deals and they're both sweet. There are always HX40/H1E's on there as well.

[turbotalon1g]

How much power are you trying to make? HX40 is pretty big.

(side note: doesn't anyone enjoy modding there cars slow anymore, or does everyone just want to go faster than the next guy)

[CarPsyco84]

How much power are you trying to make? HX40 is pretty big.

(side note: doesn't anyone enjoy modding there cars slow anymore, or does everyone just want to go faster than the next guy)

Comeon, we all know size matters

[jrohner]

There are many different versions of the HX40. The best ones are good for nearly 700hp in a bolton housing, and the worst ones are close to the same hp wise as an HX35.

There are 6,7,8 blade compressors, and 10 & 12 blade turbines. Some compressors are bigger than others as well. The 12 blade turbine is for the highest hp, and the 6 & 7 blade compressors are supposed to be much better than the 8 blade ones.


HX35's are a lot simpler, since the two main ones are 7 blade compressor and 8 blade compressor. The 7 blade flows more so it's a better match for a larger T3 turbine housing, and the 8 blade matches up very well with the small bolton housing.

[Shane@DBPerformance]

Kevin has an HX40 on his 1G. http://www.mitsustyle.com/forums/showthread.php?t=18991

[jrohner]

Kevin has an HX40 on his 1G. http://www.mitsustyle.com/forums/showthread.php?t=18991

That car is nice, I remember seeing it at the cookout. I was quite interested in looking at it since it was the first one I got to look at with a Holset on it.

Now I have a 91 GSX auto that I'm running a Holset H1C (bolton) on with no intercooler. I like the Holset so much already that I bought another one for my white car.