Jump to content
SAU Community

Recommended Posts

I have done the search thing and it seems to me that the HKS2835pros is the turbo upgrade for me. I am looking to make around 250RWKW and I have all the usual bolt on mods to do it except a turbo, Z32 & fuel pressure regulator.

I dont want too much lag, but a bit is acceptable. I like the HKS2835pros because I can go for more power in the future if I wont. The only problem is the price $$$$ they are about $4000 for the kit.

My question is, do Garrett make a turbo with similar specs that will bolt directly to a rb25det like the HKS2835pros does. Maybe the popular "disco potato (GT2835rs)", but I think its the wrong flange type...

Any other Garrett suggestions????

Link to comment
https://www.sau.com.au/forums/topic/77263-hks-gt2835-pro-s-seems-the-go-but/
Share on other sites

I thought the "Disco Potato" is more like a parallel of the GT2530 in terms of general performance/air flow? If I wanted GT2835-type performance from a Garrett turbo, I'd probably go a GT3071R. You can get one of those in T3 flange, but need to sort out the wastegate control additionally.

I was thinking about the GT-RS, but you cant push it over much over 250 at the wheels on an rb25det & I would like something that can handle more just in case I get sick of 250 :D.

I currently have 210 and that got old real fast ...

But i guess if it is a lot cheaper then maybe I will have to considder it... and deal with 250 for the long haul.

Yes its a great turbo if u can get it jsut put one in on my vehicle very impressed. Nice kit too.

http://www.nengun.com/catalogue/product/252

Are you talking about the HKS GT2835 pro s? If so how much did it cost & what power are you getting out of it.

Grepin managed to squeeze a shade over 300rwkw (from memory) out of his HKS 2835ProS.

The trick was apparently a set of nice big cams, prior to that 280rwkw was around its limit, boost drops off. With the cams boost still drops off but obviously as a result of cams the same boost level is flowing more air. More air = more power. ;)

From memory the 2835ProS was around 2.6-3k if you import it from japland.

On the RB25 I don't think anything would match it for response and outright power.

with gt garretts under 2k youd be crazy to pay 4k for a hks unit

Depends on the power level. Why over turbo the car?

Very much like over clutching or over gearing.

A lot like the 3ltr with the stock R32 gearing. It sucks, way to short.

I'm getting my self a S13 3.9:1 before any more money is spent on big turbo's etc. What I would give to have a longer first and second gear so I can actually use the torque of the motor.

For up to and slightly over 300rwkw you can save a few $$ by grabbing a HKS 2835ProS or 3037ProS unit from japan for just under 3k imported. It bolts directly on to the manifold.

Buy a garrett item and your paying 2000 for the turbo + exh. manifold 1000 + ext. wastegate 700. 1000 for an exh. manifold.. Cheapest 'decent good quality' exh. manifolds I know of are around 1500.

$1000 or slightly less is for a cast HKS item which by all means is a very good manifold.

I wouldn't pay 4k for a hks item. Buy from nengun or greenline for under 3k.

GT28RS has the T28 flange . A good option could be the Garrett GT3071R with the .68 or .87 ARR HKS T3 flanged GT30 exhaust housing sold separately . Brett at GCG says he can get them as I'm sure others can . Going this way gets you very little exhaust restriction and an efficient turbocharger . Avoid the GT3071R "wastegated " its really a GT2835R with a T28 flange .

Of interest here's some pics of a 2835 pro s from sly33.

After a lot of thinking I've decided to go this turbo - just getting quotes from nengun and greenline.

sly33's getting 266rwkw@ 19psi, no cams just bolt it on.

Hell on a cold night that must be 270..

I think he said he could get more but they didn't want to push it.

266 rwkw must be pretty exciting in rear wheel drive....!

Only problem I can see with the 2835 is the exhaust housing is different - you'd have to get the kit with dump or make one yourself.

I don't think I'd like to go much bigger on the standard manifold - the engine pic here shows that there's not much room left with the 2835.

Good luck!

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

    • GCG is a good company, they're a major distributor for Garrett in Japan as well.
    • Nah, OEM washer bottle and brake fluid reservoirs are fine I don't know what it is with the plastic that Mazda used, some plastics, like the washer bottle and brake fluid res are fine, and still look new after 20 years use, where as the coolant expansion tank, and PS reservoir, that I replaced with new OEM items when I first got the car, turned yellow and started getting brittle a few years later If the dirty yellow stained plastics didn't trigger me there wouldn't be an issue, but they did, much like the battery bracket....... Meh As for going back to work full time to support car stuff, nope, why, because I own a Mazda NC MX5, not a Nissan R series Skyline 🤣
    • I've never heard of CJ-motor, so can't advise you on them. I'd just go straight to GCG for a GCG highflow though. Seems no point to use a middleman. I'm somewhat surprised that the price on the CJ site is lower than the GCG retail price. Even though CJ would get a discount of some sort, you would hardly expect them to give up so much margin. Maybe the price is out of date? Having said that "I'd go to GCG"...when I did my highflow, I went to Hypergear. I did this https://hypergearturbos.com/product/rb25dethighflow/#tab-dyno-results with the R34 OP6 450HP profile. With the BB centre (extra $400) and intially with the standard boost actuator, but I eventually got him to send me the high pressure one when I got to the point of being able to actually use it. Ends up costing the same sort of money as the GCG highflow, but this is, of course, the turbo that I KNOW has a shorter length core and so moves the comp cover rearwards. The GCG apparently doesn't do that. My mechanic also swears by the GCG highflow, given that we have another turbo rebuilder who does something essentialy the same as theirs, using Garrett wheels. He says it stands up at really low revs and makes good power. I haven't pushed my HG highflow past ~240-250rwkW yet (should have a little more in it, but unclear how much) and it does have a fairly gentle boost ramp. OK, it's much better now that I have gotten my boost controller tuned up on it.  A lot of my earlier unhappiness was because I couldn't keep the wastegate flap as closed as it needed to be (including some mechanical issues). I'd still prefer it to boost up nearly as quickly as the stocker, and it certainly a bit slower than that. So maybe the GCG one is worth the first look (for you).
    • Ok thanks 🙂 I will higly consider this. Any "known" company for a good reviews and experience to send that off? Is that CJ-motor good one? Or go straight to GCG site? I need to use VPN to even find some of those "shops" let alone access them 🙂 
    • You can literally put in as much WMI as it takes to quench the combustion totally (and then back it off a little, obviously), and it will keep making more and more power. The power comes from the cooling effect of the water (and the meth) and the extra fuel (the meth, which also has massive octane). It is effectively exactly like running E85. One might be slightly better than the other, but they are damn close. But with either you can lean on the boost or the timing (or both) waaaay more than with just petrol and the results are similar. Here's the first thing I googled for an anecdotal bit of evidence. Can't access the attachment without being a gold member, but it is there for the getting if able to, or searched up elsewise perhaps. https://www.hpacademy.com/forum/general-tuning-discussion/show/wmi-vs-e85/
×
×
  • Create New...