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turbos turbos turbos.....

Cazisk

By Cazisk,
in Engines & Forced Induction

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Cazisk Enthusiast

Cazisk

Posted
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upgrading my turbo soon, need your help guys!

I've got 2 options (HKS turbos):

GTRS

or

GT2835

what im after from the car would be for occasional track use, will not be changing internals (yet) so i wont go over that limit... but may also change internals some time in the future (wont be anytime soon). Even if i was wanting more power, it probably wont be more than 350rwkw.

thanks guys!

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Cazisk Enthusiast

Cazisk

Posted
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LOL i said no more than 35rwkw... which means it would most proly be less than that and it wont be done anytime soon aswell. im currently not planning on changin internals, but i would like to leave the option of going further just incase in the future i want more lol

280rwkw sounds reasonable lol

Butters Experienced

Butters

Posted
Posted

Ammm AFAIK,

There basically the same turbo dude.

The GTRS was released later and has basically the same wheels as the GT2835. The only difference was the GTRS has a smaller compressor cover. Designed to be used as a direct easy replacement to a lot of nissan turbo's.

That said the gt2835 should net more power based on the larger cover.

Neither will make 350rkw. Ther are rated at 400 ps(give or take depending on models). So about 250rwkw is realistic.

discopotato03 Grand Master

discopotato03

Posted
Posted

Actually the main difference between the GTRS and the GT2835R's is the turbine . Both of these turbo's use varying trims (52T - 56T) of the GT35 series compressor which is 71.1mm OD .

The GTRS uses a 76 trim version of the 53.85mm NS111 turbine in a .64 ARR GT28 turbine housing . The 2835's use a Garrett hybrid turbine that's actually a modified GT30 turbine . These start life as a 60mm UHP (ultra high pressure ratio) turbine which is factory cropped down to 56.6mm OD and is about the turbine size limit of the GT28 exhaust housing - without totally killing the nozzle section . They are made in 84 and 90 trim and have .64 and .86 housings to suit .

All of this was a bit of a desperate by Garrett to fill the void between the 53.85 and 60mm turbines - in other words too much turbine inlet (back pressure) and not enough shaft torque for the larger trim GT35 compressor wheels . Note that HKS uses the smallest compressor trim (52) in the GTRS with the small turbine . The hybrid turbine is a bit of a dog because the hub section is a bit big (restrictive) and heavy for the length of the blades , GT28 housing really a bit small as well .

For an engine needing a T3 exhaust flange there are few GT28 housing options ie the .64 from the HKS GT2530 or the expensive .68 and .87 from the 2835 Pro S .

In my opinion the Garrett GT3071R is a better bet , it uses the non bastardised GT30 turbine with the same GT35 56 trim compressor as the 2835 . If you need an integral waste gate HKS do a T3 flanged .68 and .87 version for their GT3037 Pro S turbos which you can buy seperately . If you look at the Garrett Catalogue PDF it shows the 3071R CHRA and a couple of compressor housing options .

Cheers A .

Cazisk Enthusiast

Cazisk

Posted
  • Author
Posted
Actually the main difference between the GTRS and the GT2835R's is the turbine . Both of these turbo's use varying trims (52T - 56T) of the GT35 series compressor which is 71.1mm OD .  

The GTRS uses a 76 trim version of the 53.85mm NS111 turbine in a .64 ARR GT28 turbine housing . The 2835's use a Garrett hybrid turbine that's actually a modified GT30 turbine . These start life as a 60mm UHP (ultra high pressure ratio) turbine which is factory cropped down to 56.6mm OD and is about the turbine size limit of the GT28 exhaust housing - without totally killing the nozzle section . They are made in 84 and 90 trim and have .64 and .86 housings to suit .  

All of this was a bit of a desperate by Garrett to fill the void between the 53.85 and 60mm turbines - in other words too much turbine inlet (back pressure) and not enough shaft torque for the larger trim GT35 compressor wheels . Note that HKS uses the smallest compressor trim (52) in the GTRS with the small turbine . The hybrid turbine is a bit of a dog because the hub section is a bit big (restrictive) and heavy for the length of the blades , GT28 housing really a bit small as well .  

For an engine needing a T3 exhaust flange there are few GT28 housing options ie the .64 from the HKS GT2530 or the expensive .68 and .87 from the 2835 Pro S .  

In my opinion the Garrett GT3071R is a better bet , it uses the non bastardised GT30 turbine with the same GT35 56 trim compressor as the 2835 . If you need an integral waste gate HKS do a T3 flanged .68 and .87 version for their GT3037 Pro S turbos which you can buy seperately . If you look at the Garrett Catalogue PDF it shows the 3071R CHRA and a couple of compressor housing options .  

Cheers  A .

:confused: shit.....alot of things there that i dont understand lol but thx for the info! (dont know much about turbos =()

Sydneykid Grand Master

Sydneykid

Posted
Posted
:confused:  shit.....alot of things there that i dont understand lol but thx for the info! (dont know much about turbos =()

My 20 cents....

There is a huge difference between a 250 rwkw turbo and a 350 rwkw turbo. You could stick the 350 rwkw turbo on and keep the boost low for 250 rwkw, but it will be as laggy as hell. People tolerate laggy when they have 350 rwkw, but you will have laggy and only 250 rwkw, not so appealing.

So choose, it's either a 250 rwkw turbo or a 350 rwkw turbo and they are not the same turbo.;)

Sydneykid Grand Master

Sydneykid

Posted
Posted
SydneyKid which do you think is better of for occasional track use? i guess i prefer response as to top hp. hmmm......

I have no personal experience with either turbo, we find the GCG ball bearing high flow to be a great all round turbo, suitable for road, drag or circuit. We have a couple of RB25's with 260/265rwkw and both have more power everywhere than standard. That's makes a great package for circuit work.:)

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