Jump to content
SAU Community

Recommended Posts

Interesting info ...:

HKS official Japanese web site http (//www.hks-power.co.jp/) rates their new(er) GTSS power output equal to their GT2530 at 320PS. This is perplexing in that the official HKS Australian web site rates GT SS at only 280ps and 2530 at 320ps.

Also the "new" Trsut T517Z's now look to be superior to the HKS items as they flow alittle more power and come onto boost earlier than the 2530's but probably later then the GTSS's.

Anyone gone from GTSS's to T51's ????

note; image below is HKS dyno graph for GTSS's !!! ... comments ?

Link to comment
https://www.sau.com.au/forums/topic/32258-hks-gt-ss-vs-2530s-vs-trust-t517zs/
Share on other sites

highly reccomend 2530's. been in a couple of gtr's with them and have good response.its wierd cos its almost like stock turbo's but with alot more power

Appreciate the comments but have you guys been in a car with GTSS's, I have and it was phenominal !

Must confess however I havent been in car with 2530's

  • Like 1
Jeremy, The 25/30s will make around 70rwhp more than your R34 made last time on the Dyno but with a very wide power band plus they can be had cheap these days.

Guys,

How do you insert an image into these messages (Im not too bad on computers but this has got me Fked)

I know someone who has Trust T517Z turbos in a GTR. Spools up around 3300rpm, starts pulling like a freight train after 4000rpm@ 12 psi. Higher boost + cams etc will see these babys pull well over 300awkw.

Quoting "Club Skyline" A Japanese tuning mag the Trust T517z turbos were designed to fit between HKS 2530 and HKS 2540 range.

But if I was in the market for turbos, the New GT-RS would be my choice.

Hi guys, as I see more of the results from twin GTRS's it starts to look more and more like they are a bit too big for a standard internals RB26. OK on 2.7 litre and 2.8 litre engines with high rpm limits (9,500 rpm plus). Just a little late building boost in the rpm range with 2.6 litres and the standard rpm limit.

Of course if HKS published compressor maps we wouldn't have this problem of having to wait for other people's results and they might actually sell more turbos faster. But I'm not holding my breath on that one.

Hi guys, moving onto T517's, no water cooling and no ball bearings, so long term reliability has to be a consideration. The most tricky bit is their wastegates open the other way, this makes using the common designs of split dumps almost impossible.

I'll pass thanks.

Uhh...ohh, i think you will find that BB turbos can be rebuilt, but if i owned a BB turbo i wouldnt be too concerned about the need to get them re-built.

Your likely to damage a turbine/compressor thru dodgy filters or engine crapping itself, before needing to rebuild the turbo's core/cartridge...that said if your buying 2nd hand, being able to cheaply re-build ($400) a bush bearing turbo is comforting.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • When I need something else to edit, I use Movavi. A friend who does video editing on a daily basis recommended me) it's an easy video cutter to use for beginners
    • I need to edit some videos for work but I'm not good at all this. Which video editor can you recommend?
    • I think you're really missing the point. The spec is just the minimum spec that the fuel has to meet. The additive packages can, and do, go above that minimum if the fuel brand feels they need/want to. And so you get BP Ultimate or Shell Ultra (or whatever they call it) making promises to clean your engine better than the standard stuff....simply because they do actually put better additive packages in there. They do not waste special sauce on the plebian fuel if they can avoid it. I didn't say "energy density". I just said "density". That's right, the specific gravity (if you want to use a really shit old imperial description for mass per unit volume). The density being higher indicates a number of things, from reduces oxygen content, to increased numbers of double bonds or cyclic components. That then just happens to flow on to the calorific value on a volume basis being correspondingly higher. The calorific value on a mass basis barely changes, because almost all hydrocarbon materials have a very similar CV per kg. But whatever - the end result is that you do get a bit more energy per litre, which helps to offset some of the sting of the massive price bump over 91. I can go you one better than "I used to work at a fuel station". I had uni lecturers who worked at the Pt Stanvac refinery (at the time they were lecturing, as industry specialist lecturers) who were quite candid about the business. And granted, that was 30+ years ago, and you might note that I have stated above that I think the industry has since collected together near the bottom (quite like ISPs, when you think about it). Oh, did I mention that I am quite literally a combustion engineer? I'm designing (well, actually, trying to avoid designing and trying to make the junior engineer do it) a heavy fuel oil firing system for a cement plant in fricking Iraq, this week. Last week it was natural gas fired this-that. The week before it was LPG fired anode furnaces for a copper smelter (well, the burners for them, not the actual furnaces, which are just big dumb steel). I'm kinda all over fuels.
    • Well my freshly rebuilt RB25DET Neo went bang 1000kms in, completely fried big end bearing in cylinder 1 so bad my engine seized. No knocking or oil pressure issue prior to this happening, all happened within less than a second. Had Nitto oil pump, 8L baffled sump, head drain, oil restrictors, the lot put in to prevent me spinning a bearing like i did to need the rebuild. Mechanic that looked after the works has no idea what caused it. Reckoned it may have been bearing clearance wrong in cylinder 1 we have no idea. Machinist who did the work reckoned it was something on the mechanic. Anyway thats between them, i had no part in it, just paid the money Curiosity question, does the oil system on RB’s go sump > oil pump > filter > around engine? If so, if you had a leak on an oil filter relocation plate, say sump > oil pump > filter > LEAK > around engine would this cause a low oil pressure reading if the sensors was before the filter?   TIA
    • But I think you missed mine.. there is also nothing about the 98 spec that supports your claim..  according to the fuel standards, it can be identical to 95, just very slightly higher octane number. But the ulp vs pulp fuel regulations go show 95 (or 98), is not just 91 with some additives. any claim of ‘refined by the better refineries’ or ‘higher quality fuel’ is just hearsay.  I have never seen anything to back up such claims other than ‘my mate used to work for a fuel station’, or ‘drove a fuel delivery truck’, or ‘my mechanic says’.. the actual energy densities do slightly vary between the 3 grades of fuel, but the difference is very minor. That said, I am very happy to be proven wrong if anyone has some hard evidence..
×
×
  • Create New...