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Sorry for all the questions here but I have got some pretty good prices on the Garrett GT2871R kit for the RB25.

Would this be the closest Garrett solution to the HKS GT-RS?

What are the pro's and con's of the GT2871R vs Hypergear ATR43 SS-1?

I am after a reliable 250rwkw responsive, driveable street/track car and I don't mind paying for a good turbo if it is warranted :thanks:

You still need a T3 turbine housing for the GT2871.

That is porn!

Nice to hear from a happy HKS customer... enjoy mate

180638_198493110176588_100000477008080_746518_2379719_n.jpg?t=1307869459

i brought one from tunehouse sydney strait from the hks in japan i just put this kit drove it for two days now i sent my ecu off for a nistune but holy hell!!!

just by the swap no other mods made the car pick up 50X better full boost is around 3000 rpm :D the kit comes with every think as in pics even heat shilds around sillicone joint ..

if you get it and its the real deal you wount be let down :thumbsup:

I was quoted on a full bolt on kit to suit an RB25 so I'm assuming that it comes complete with everything I need including housings etc

I would take the time to find out exactly what turbine housing they intend supplying you with as Garrett don't make one in a T3 footprint for that turbo.

Thanks for the heads up mate

Jesse Streeter has made the HKS option look very attractive... I think that is the solution for me :yes:

I would take the time to find out exactly what turbine housing they intend supplying you with as Garrett don't make one in a T3 footprint for that turbo.

My experience was that the GCG hiflow was really close to the GT-RS and they are much cheaper by comparison. Some of the Hypergear options look interesting at the price also such as the SS1 (apologies if I have the model wrong).

I have no doubt that you will be very happy with the GT-RS if you go that way. It is definitely a whisker more responsive than the 2835ProS that has replaced it but I prefer the more linear delivery of the ProS in general.

The GT-RS behaves like a kid with ADHD and it is fantastic for cut and thrust driving especially considering it was strapped to the fat stagea with all its extra weight.

It might be worth pricing a HKS 2835 Kai (the new version) thru Jessestreer as well.

http://www.jps-trading.com/product_info.php?currency=AUD&products_id=5794

You are probably going to get some grief from some people on buying name brand turbos like HKS but new Jap kits are true bolt on options so you pay some coin upfront but save on the frigging around factor and with their HKS specific housings they work very well.

Thanks for the info mate

The GCG high flow option ($2k) doesn't really seem that cheap considering the HKS is a brand new turbo with complete kit ($2.7k) and has much better performance.

The SS-1 looks like a nice option also but Hypergear has only just finished the R&D on it (like last month!) and he is only one man with limited resources so it is still pretty much an unknown quantity at this stage (as well as being a bush bearing)

I want to do this job once and do it right, I have gone for the best bang-for-buck option on everything else for my car so far but I do not want to compromise on the turbo or engine performance.

Your opinion of the GT-RS seems to conflict with many others here on SAU... a kid with ADHD... cut and thrust driving?

I thought the GT-RS was supposed to be the ducks nuts? i.e. smooth and responsive - am I missing something here?

I will look into the ProS

Cheers

My experience was that the GCG hiflow was really close to the GT-RS and they are much cheaper by comparison. Some of the Hypergear options look interesting at the price also such as the SS1 (apologies if I have the model wrong).

I have no doubt that you will be very happy with the GT-RS if you go that way. It is definitely a whisker more responsive than the 2835ProS that has replaced it but I prefer the more linear delivery of the ProS in general.

The GT-RS behaves like a kid with ADHD and it is fantastic for cut and thrust driving especially considering it was strapped to the fat stagea with all its extra weight.

It might be worth pricing a HKS 2835 Kai (the new version) thru Jessestreer as well.

http://www.jps-tradi...roducts_id=5794

You are probably going to get some grief from some people on buying name brand turbos like HKS but new Jap kits are true bolt on options so you pay some coin upfront but save on the frigging around factor and with their HKS specific housings they work very well.

It comes on very soon and very hard but does start losing a bit of pull up top (which is easily sorted with a hit of gas lol).

Have a look at my thread here for a good little comparison.

http://www.skylinesaustralia.com/forums/topic/270208-dyno-graph-comparisons/page__st__20__p__4598309__hl__headwork__fromsearch__1#entry4598309

The GCG high flow option ($2k) doesn't really seem that cheap considering the HKS is a brand new turbo with complete kit ($2.7k) and has much better performance.

Since when isn't the GCG turbo brand new? All the rotating bits are brand new. The non-moving bits are cleaned and the whole assembly goes back on in the stock location with stock lines and is definitely cheaper to re-install than any other turbo as it is the one and only true bolt on since it is the same turbo. $1800 last time I checked.

I want to do this job once and do it right, I have gone for the best bang-for-buck option on everything else for my car so far but I do not want to compromise on the turbo or engine performance.

I think the GCG is better bang for your buck. I back to back tested the GCG (OP6 rear) and the HKS GT-RS same dyno within a week. We had issues with making the power expected from car and it all pointed to the turbo after testing and ruling out lots of other parts. So I bit the bullet and bought a GT-RS for reasonable money and it performed almost identically. On the dyno (which is not proof of anything much necessarily) they were very close, the GT-RS made a whisker more power slightly earlier(maybe OP6 housing makes it slightly lazier than and R33 rear??) but made similar top end. I believe the GT-RS is the better turbo but bang for buck the GCG was better value as the performance on the dyno looks very similar.

Your opinion of the GT-RS seems to conflict with many others here on SAU... a kid with ADHD... cut and thrust driving?

I thought the GT-RS was supposed to be the ducks nuts? i.e. smooth and responsive - am I missing something here?

Conflict with other views? You breathe on the GT-RS is wants to go. It is very responsive and ramps onto boost so easily any gear any time. A great turbo.

I will look into the ProS

I think this is the ducks nuts turbo on an R33/34 but much higher cost. The stagea has a weight penalty of +300kg to lug around so the extra response of the GT-RS is pretty handy in traffic. The 2835ProS needs a slightly larger throttle opening to get it moving by comparison. With less weight you might not notice the difference?!?!

I think each of these turbos have positives as they all perform well on RB25's and as the performance improves the cost goes up. I don't think you can go wrong either way.

Nice to hear from someone that has first hand experience with these turbo's

Interesting that the GCG hi flow ($2k on GCG website) was so similar in performance to the GT-RS on the dyno... It is certainly a good option to consider.

The 2835 Pro S seems to have been superseded by the GT2835KAI but I don't want to drop the extra $500 on it... the GT-RS is already a stretch and I need injectors as well! (got a good price on some Tomei 555cc)

Cheers man

Since when isn't the GCG turbo brand new? All the rotating bits are brand new. The non-moving bits are cleaned and the whole assembly goes back on in the stock location with stock lines and is definitely cheaper to re-install than any other turbo as it is the one and only true bolt on since it is the same turbo. $1800 last time I checked.

I think the GCG is better bang for your buck. I back to back tested the GCG (OP6 rear) and the HKS GT-RS same dyno within a week. We had issues with making the power expected from car and it all pointed to the turbo after testing and ruling out lots of other parts. So I bit the bullet and bought a GT-RS for reasonable money and it performed almost identically. On the dyno (which is not proof of anything much necessarily) they were very close, the GT-RS made a whisker more power slightly earlier(maybe OP6 housing makes it slightly lazier than and R33 rear??) but made similar top end. I believe the GT-RS is the better turbo but bang for buck the GCG was better value as the performance on the dyno looks very similar.

Conflict with other views? You breathe on the GT-RS is wants to go. It is very responsive and ramps onto boost so easily any gear any time. A great turbo.

I think this is the ducks nuts turbo on an R33/34 but much higher cost. The stagea has a weight penalty of +300kg to lug around so the extra response of the GT-RS is pretty handy in traffic. The 2835ProS needs a slightly larger throttle opening to get it moving by comparison. With less weight you might not notice the difference?!?!

I think each of these turbos have positives as they all perform well on RB25's and as the performance improves the cost goes up. I don't think you can go wrong either way.

Very interesting , Woolverine I was just looking at the GTRS pic and the one in your link and it hit me that the GT2835 KAi uses both of the GTRSs housings but a slightly different style of port shrouding on the comp housing .

Sorry if I've asked before and forgot but do you have any results from the 2835 KAi ? I'm not interested personally because that GTRS should suit me fine , just pondering using an adapter and a 0.86 turbine housing I have on it but thats another story .

I don't really know how to do these things on the cheap without buying 2nd hand , I suppose if you had an 0P6 turbine housing and 25 comp housing you could Hi flow it with one of the GT2781R cartridges but with the machine work and custom lines I can't see it being much cheaper than a GCG Hi Flow at Grp buy rates .

One way or another having BBs costs , A .

Hi Disco

One of the members here has a kai (can't remember who it is offhand) he was having issues with compressor surge.

I will do a quick search and link if I can find it.

HKS 2835 kai thread

Edited by wolverine

It occured to me to go back and have a look at Garretts turbine maps for 0.64 and 0.86 housings on that GT28 turbine and the difference is a little better than I thought .

Have a look at the flow rates of the GT28 0.86 AR and te GT30 0.63 AR .

http://www.turbobygarrett.com/turbobygarrett/images/catalog/Turbochargers/gt28_images/739548-1&064turb_e.jpg

http://www.turbobygarrett.com/turbobygarrett/images/catalog/Turbochargers/gt30_images/GT3071R_turb_e.jpg

Interesting that the GT28 turbine in its larger housing slightly outflows the GT30 in its smallest housing . Hmmm .

Edited by discopotato03

just pondering using an adapter and a 0.86 turbine housing I have on it but thats another story .

Some of the current hypergear stuff use GT28 cast turbine housings. Stao cuts them up, T3s em and adds on the skyline specific rear.

Im sure if you ask nicely he could EASILY make one .86, T3, 6 bolt rear and aptly sized for the GTRS turbine before posting it out to you for an attractive figure. Come on disco, be a go getter! Imagine it works out well.. It would start a frenzy of people buying garrett CHRA's an moded HG housings! Cut cost GTRS!

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