Turbo Confusion

[Yawn]

Hey guys i was looking around for a new set of low mount turbos for response. I searched and various turbos were recommended by diff ppl. So far HKS 2530 and Garrett 2560r seem to be about right for me. I am new to turbos so this might be a noob question. Are garrett and HKS related? Is garrett related to Nissan? There seems to be so many diff turbos with diff names for each. For example I have heard the 2530 and 2560 are comparable and almost the same. Then GT-SS and GT-RS came into the picture and N1 and what not. Then we have the hi-flowed variations. And basically what models have stopped production? From what i have read, HKS turbos are almost the same as Garrett ones except for slight variations, and the diff in price is basically HKS tax?

Soooo what HKS turbos are equivalent to what Garrett ones? And N1s are equivalent to what? All are direct bolt-ons? What advantages do these have over hi-flowed ones? How do hi-flowed standard turbos compare to the HKS and Garrett variety? What is basically done when a turbo is hi-flowed? What about hi-flowing an HKS one for example? Would that be dumb? Am i dumb? Also, could someone maybe tell me which turbos are better for response and which are better for outright power?

Example: hi-flowed stock turbo<N1<2530<2560=2860

^ does not mean anything, just wondering if someone could do something like that for me if its not too much to ask.

Cheers guys sorry for too many questions

[R31Nismoid]

This thread here will help a great deal:

http://www.skylinesaustralia.com/forums/in...opic=80624&st=0

5 pages long, but a great read.

[Yawn]

This thread here will help a great deal:

http://www.skylinesaustralia.com/forums/in...opic=80624&st=0

5 pages long, but a great read.

I have read it all at least 3 times now.. But things get rather hazy in the middle and im pretty sure at least a few of my questions are unanswered there.. or is it just me getting sleepy and tired from all this turbo talk. =S

Edit: ok scrap the last part of my 1st post, but what about the hi-flowed questions? And how garrett is related to Nissan or HKS? And how does a hi-flowed, steel wheeled, stock turbo compare to a new HKS one? And what is actually meant by hi-flowed? Would it be dumb to hi-flow a new HKS turbo? Garrett manufactures some parts for HKS or wat? Is there such thing as a Garrett 2530?

Edited May 23, 2006 by Yawn

[R31Nismoid]

Its very confusing at times

HKS 2530 - no longer in production.

GT-SS are the babies, R31 N1's are similar

HKS 2530 is middle

HKS GT-RS is the big mothers

Then we have the Garrett range which im not totally on the ball with yet

There are others, that ill have to look around, but the turbo specialists will no-doubt see this and give ya a quick run-down

[Craved]

*waits for Doughboy and Discopotato

Edited May 23, 2006 by Craved

[Yawn]

*takes a seat and waits with Craved

[Craved]

Soooo what HKS turbos are equivalent to what Garrett ones?

---- none .. HKS usually use different trims on the turbines to achieve different results .. you'll also notice that most HKS rear AR's are different to garrett ones .. ie 0.61 - 0.87 and 1.12 in HKS .. but 0.64 - 0.84 and 1.06 in garrett type turbos..

as well as different trims and sizes etc ...

look here for HKS 2530 specs

http://www.bd4s.com.au/turbo_table.htm

All are direct bolt-ons?

--- most of these come in the T28 flange type of the GTR

What advantages do these have over hi-flowed ones?

--- tried and tested by big japanese companies.... usually better power results

How do hi-flowed standard turbos compare to the HKS and Garrett variety?

--- HKS > others IMO and there are plenty of results to back it up ... but thats not to say the garrrett are any worse .. just different characteristics

-- personnaly for me its HKS - garrett then highflow

What is basically done when a turbo is hi-flowed? What about hi-flowing an HKS one for example? Would that be dumb? Am i dumb? Also, could someone maybe tell me which turbos are better for response and which are better for outright power?

there wouldn't be an answer to this .. there are many setups within these turbos re: rear housings etc ..

i wouldn't high flow an HKS turbo ... usually the highflows are done on consistently producted turbos . ie Z32, R33,R32,R34 etc etc

Edited May 23, 2006 by Craved

[Yawn]

---- none .. HKS usually use different trims on the turbines to achieve different results .. you'll also notice that most HKS rear AR's are different to garrett ones .. ie 0.61 - 0.87 and 1.12 in HKS .. but 0.64 - 0.84 and 1.06 in garrett type turbos..

as well as different trims and sizes etc ...

look here for HKS 2530 specs

http://www.bd4s.com.au/turbo_table.htm

--- most of these come in the T28 flange type of the GTR

--- tried and tested by big japanese companies.... usually better power results

--- HKS > others IMO and there are plenty of results to back it up ... but thats not to say the garrrett are any worse .. just different characteristics

-- personnaly for me its HKS - garrett then highflow

there wouldn't be an answer to this .. there are many setups within these turbos re: rear housings etc ..

i wouldn't high flow an HKS turbo ... usually the highflows are done on consistently producted turbos . ie Z32, R33,R32,R34 etc etc

Thanks for the reply, as i said i am nub to turbos, so is there a website or any sort of resource that i can learn about trims, housings, ARs etc? I have no idea what they do or how they affect the turbos flow, response, etc. There might not be any exact replica of turbos between HKS and Garrett but it has been said in "First set of turbo's" in the link that R31Nismoid posted, that there are many similarities between a HKS2530, Garrett 2560r of the -5 type and maybe N1 (cant remember)? Also, in that thread it says that someone had a certain turbo that had both HKS and Garrett prints in it on diff sides of the turbos? What does that mean? Did Garrett actually manufacture anything for HKS or vice versa or even for Nissan? Also final question, how come the high flows are usually done on factory turbos? Does that mean that by buying an HKS item it has effectively already been "highflowed" ?

Cheers

[Craved]

garrett are the manufacturers for HKS and nissan turbos

like IHI are for apexi

and KKK for trust

think thats right, but HKS is Definately made my garrett

i dont know of any sites which teach you about trims etc, you pick it up along the way .. or wait for above to help out

N1 i think run a 0.64 rear housing.. and would be close. .. but yeah ..

HKS 2530 ran over 400rwkw on premium for Twoogle

highflowing a brand name turbo that has been very well designed isa simply a silly idea.. you move to the next step production turbo and sell the one you have,, not guess at it and high flow it..

highflow stockers are usually very easy, relatively cheap and now able to produce good power..

[Yawn]

Thanks a lot for that man.. it really clears up a lot of things for me. I guess my next questions would be.. what do Compressor Wheel, Compressor Housing, Turbine Wheel, Exhaust Housing, Trim Inducer (mm), Major (mm), Inlet (mm), Outlet (mm), A/R, Trim, Major (mm), Exducer (mm), Inlet Flange, Oulet Flange and A/R all mean and how one would affect the other, which would affect response/top kw if it was bigger/smaller. lol i know thats a pretty big question to ask and it might be pushing it a bit but if someone such as Discopotato would reply here, i'm sure it would be a big help to a lot of turbo nubs like me looking at buying new turbos and could, in the future, be a "if you had searched you would have found this thread, its got a lot of info on it" kind of thread.

*Sits back down to wait..

[R31Nismoid]

Did Garrett actually manufacture anything for HKS

Spot on. HKS is made by Garrett, to HKS specifications.

Eg, the HKS GT-SS turbos actually have "Garrett" printed on the comp cover, not HKS

www.howstuffworks.com

The above website is generally a very good place to learn a bit more, but keeping it in reasonably understandable english for the common bloke like you and me

As has been alluded too, HKS/Garrett turbos are almost the same.

Its mainly the housing differences. Also Garrett is markedly cheaper than any HKS offering of the equivalent, so often if there is a tiny difference, Garrett is the way to go IMO.

I wish i found the GT-SS equivalent in the Garrett range before i purchased them, would have saved myself easily $1000

[paulr33]

www.turbobygarrett.com under the tech section goes into great detail when you want to learn about

compressor surge

compressor wheels + trims

turbine a/r

turbine compressor maps

turbocharger components and bearings

and other turbocharger related bits and pieces, very helpful.

i would recommend reading it all.

[Dale FZ1]

You will also find the Garrett part # for their version of N1 on turbobygarrett.com - plus many others.

Those with RB26 powerplants and Silvia/180SX punters are nicely looked after by Garrett with bolt-up options available direct from Garrett due to the T25 flange patterns they supply. HKS cater for the RB20/25 market which require T3 flanges for bolt-on fitment.

[discopotato03]

If its all about response WilliamsF1 was very happy with his setup . I think it uses GT-SS turbos and mild cams with possibly an Apexi PFC and a few other goodies .

I'm not the right person to ask about twin turbos or GTR's because I've had very little to do with them .

I think the single is way to go but thats another story and not what you want to do .

Cheers A .

[Rolls]

www.turbobygarrett.com under the tech section goes into great detail when you want to learn about

compressor surge

compressor wheels + trims

turbine a/r

turbine compressor maps

turbocharger components and bearings

and other turbocharger related bits and pieces, very helpful.

i would recommend reading it all.

Just a question regarding some of that stuff, whats stopping someone using a small rear a/r eg .6 ish with a massive external gate, surely as soon as the wastegate opened most of the restriction that would be caused by the small a/r would then be bypassed allowing a decent top end?

or am I completely wrong?

Edited May 25, 2006 by Rolls

[R31Nismoid]

You still need flow through the exhaust housing, this is what makes boost and where restriction occurs

The wastegate is there to regulate it how much goes through the rear only

The .63 is only going to flow "X" amount. Changing the wastegate type/size will not make the turbine housing flow any more, or less as its just letting "X" air go through the turbine housing and "Y" air out the wastegate hole..

make sense?