Holset Hx35 Turbo

[gkenshin]

Is anyone running a Holset HX35 turbo on a 25det

Would like to when boost comes on and when it hits full boost if anyone could help

[Dale FZ1]

Holset seem to get more attention on US based forums. Perhaps their availability there is greater.

Pretty sure the HX35 model name will cover a very wide range of units of different specification.

[KiwiRS4T]

A number of Kiwis use them - try

http://www.skylinesdownunder.co.nz/forums/

[MJTru]

Ant to sure, last time I used one I just didn't like it. Boost came in at 4000 - 4500 and max boost after that. There are way better turbos out there. That's just my 2 cents.

[hypergear]

Those are for Diesel school buses. They are not effective for high performance petrol in today's standard.

[Lithium]

Not true, there are Holsets which perform very well on performance petrol motors- you have to get the right combos but there are varieties of HX35 which have been used very successfully on RB25s- I very nearly bought one instead of the GT3076R, only reason I didn't was I at the time figured I didn't want an external wastegate/aftermarket manifold setup.

[Super Drager]

I've driven an R33 with a HX40, was very similar to my dads old 35R powered 33.

[hypergear]

I got HX35 laying around for preferably some one had a 3076 or similar to try it. It was a repair job for a school bus and the customer didn't came back.

They can make the power, how ever there are many options out today which are capable of the same amount of HP with better response and drive ability.

[Badgaz]

any opinions on master power turbos?

[Lithium]

I got HX35 laying around for preferably some one had a 3076 or similar to try it. It was a repair job for a school bus and the customer didn't came back.

They can make the power, how ever there are many options out today which are capable of the same amount of HP with better response and drive ability.

The same can be said for a LOT of popular turbos - everything can't be the best, so everything else has something better than it. The Holsets aren't the best out there, but they are far from the worst, and pretty far up there in terms of value for money.... the trick is just doing the research and identifying which ones are the ones which would work for you.

any opinions on master power turbos?

They seem solid and reliable, I am still waiting for more real world feedback on them before I form an opinion on their power versus response but one of my mates just got his R33 GTS25t tuned with a billet MP595 and made 330kw @ hubs on 19psi with a respectable power delivery, from what he's said.... will have to try and find out more about how it drives etc. It sounds awesome!

[Badgaz]

i was recommended the mp544 based on a power goal of 250-300rwkw.....only issue is that one is only 0.7 a/r hot side....pretty good prices though...most of them are just under a grand NZD.

[Lithium]

I thought you were looking for an internally gated/bolton style turbo if possible?

[Badgaz]

i was but i still have the problem of my stock dump...after talking to a few people and umming and aahhhing a lot...i want to use a much easier dump configuration with vband's used for the wastegate..this will allow me to re-make the front pipe and dump to accomodate a couple of things that i also want namely a 3" flexi and a wideband bung....also make it easier to take apart in the future when i 30det it.

[MJTru]

I had a hx 35 with internal gate and all it did was over boost. After I changed actuators like 3 times and all different types. I gave e up. I then just tied the gate open and still I was over boosting to about 25 psi. A matter of fact I new from experience I was maxing out the ecu on my rb20det. So i spent 800 dollars on a ROM tune ecu injectors and Z32 AFM. It started to eat the boost up. But after a while I was wondering why it's over boosting even with the gate open and tied open. So off came the turbo. I new it wasn't boost controller or waste gate.

I noticed that the gate flap wasn't opening all the way. I then found online that people were have the same issue. (Internal gate here) it was limited by the cover 5 bolts cover or somthing like that. The flap couldn't open all the way. Next at closer inspection I noticed that it was a internal waste gate but twin scroll t3 turbo. So in short only one scroll would vent and the other would keep on boosting. This has nothing do with it being good or not. But it bugged me for so long that I spent 800 dollars on ecu and injectors along with AFM. Plus down time waiting. I had better results with cheap ass ebay turbos. I just should have done that and change to external waist gate. Besides all the the turbo hit hard when it came in but was way to laggy for me.

[zebra]

How is that the turbos fault when you picked the wrong one

[MJTru]

Wasn't really blaming the turbo here. Other than the lag it has on a rb25. Keeping in mind that the flap still didn't control boost well. I do believe it came from a diesel truck that only boost form 22/30 psi. Hence it venting from one scroll. I got it free and wasn't complaining.

[wolverine]

"Free turbo" or "got this turbo cheap" have been the cause of more head scratching threads than almost any other topic.

[MJTru]

I know what you mean mate. I just was list my experience with it. But it was free. Totally. Just was a interesting boost issue I had. I personally don't like them. For the money I would pay for one I can get other turbos that just boost faster with less lag. That's me and I do understand that not all people are the same. It would be a boring world if it was like that.

[wolverine]

I have been through my share of turbos and aftermarket parts on both cars. So I am hardly having a go at anyone for doing the same as I have done.

Usually the best results came from carefully thinking out what I wanted and paying the right price for the item. Nearly every shortcut I took ended up taking longer to sort out the issues created.

[MJTru]

You are right wolverine. Anything I have done that was well thought through was well forth the effort. A bonus was saving money and time.