HKS 2530's or NISMO RS580's.

[Tiger_kpt]

Quite frankly and simply... which is the better turbocharger for a standard GTR33 with uprated intake, exhaust, fuel pump, dump valves, coils, dump valves, intercooler, mapped Apexi PFC, clutch?

Out of the HKS 2530's and the NISMO RS580's.

What are the differences between them in terms of: -

* build quality
* power output
* response
* reliability
* driveability

Are there any structural differences between the two in terms of the bearings used, turbines used, housings used, etc?

Any input or feedback on this would be appreciated.

Cheers,
Kyle.

[Sub Boy]

HKS no longer make the 2530's....But there still may be a few floating about.

I have had both 2530's and Nismos, The 2530's are a lot gruntier and spool up a bit quicker, The Nismos are a plain bearing, so rebuilding them is a lot cheaper.

....But personally I wouldn't buy 2530's again, The Garrett equiv (GT2860-5) is almost exactly the same and a LOT cheaper.

Buy the Garretts, I make over 500hp at all four wheels on the Dynapack Hub Dyno.

[Tiger_kpt]

Originally Posted by Sub Boy

HKS no longer make the 2530's....But there still may be a few floating about.

I have had both 2530's and Nismos, The 2530's are a lot gruntier and spool up a bit quicker, The Nismos are a plain bearing, so rebuilding them is a lot cheaper.

....But personally I wouldn't buy 2530's again, The Garrett equiv (GT2860-5) is almost exactly the same and a LOT cheaper.

Buy the Garretts, I make over 500hp at all four wheels on the Dynapack Hub Dyno.

To be honest, I am leaning more towards the Nismo RS580's.

What was your actual experience with these. I understand your point about them being cheaper to rebuild... but do they need rebuilding more often?

Would they suit a standard GTR33 block and cylinder head? I have a mapped Apexi PFC, Apexi intake, Apexi exhaust, de-CAT, Splitfire coils, Trust intercooler, Nismo fuel pump and uprated clutch at the minute.

I am looking to achieve the 500bhp mark... but would like the application to be quite responsive with good driveability... for a fast road application.

What are your thoughts?

[StretchGSK]

I dont think it is fair to compare a turbo with a plain bearing to one with a "ball bearing" (if that is the right term). If response and drivability is important then you certainly want the 2530/GT2860-5.
There has been LOTS of talk on here about these 2 turbos and they seem almost perfect for street use!!

[Sub Boy]

You will be struggling to get 500hp with the Nismos on a std cams.
The Turbos only need rebuilding as often as as hard you boost them....If 500hp is what you are after, the boost level will be pretty high.
I changed from the 580's to HKS's as I wanted more power (only went to the Garrett -5's after one of my second hand HKS's dropped the bearings....Nasty previous owner didn't change the oil enough!)
All three of the turbos listed would be fine on what you have for fast street use.
I use my car 95% of street use....And the Garrett -5's are perfect, They spool up as fast as the Nismo's and produce more power...What more can you ask.

[Tiger_kpt]

Originally Posted by Sub Boy

You will be struggling to get 500hp with the Nismos on a std cams.
The Turbos only need rebuilding as often as as hard you boost them....If 500hp is what you are after, the boost level will be pretty high.
I changed from the 580's to HKS's as I wanted more power (only went to the Garrett -5's after one of my second hand HKS's dropped the bearings....Nasty previous owner didn't change the oil enough!)
All three of the turbos listed would be fine on what you have for fast street use.
I use my car 95% of street use....And the Garrett -5's are perfect, They spool up as fast as the Nismo's and produce more power...What more can you ask.

Yes, this is what I was afraid of... I don't want to be touching the head or block and changing it from standard. When you start doing that... where do you stop?!? Dangerous.

Idea is to take the existing modifications on the car... combine with a good set of steel twin turbochargers, uprated radiator and uprated oil cooler and have a circa 500bhp, reliable, responsive and driveable fast road GTR.

What would be a better combination for me out of the HKS 2510's and the HKS 2530's?

Cheers guys.

[davew]

Originally Posted by Sub Boy

You will be struggling to get 500hp with the Nismos on a std cams.
The Turbos only need rebuilding as often as as hard you boost them....If 500hp is what you are after, the boost level will be pretty high.
I changed from the 580's to HKS's as I wanted more power (only went to the Garrett -5's after one of my second hand HKS's dropped the bearings....Nasty previous owner didn't change the oil enough!)
All three of the turbos listed would be fine on what you have for fast street use.
I use my car 95% of street use....And the Garrett -5's are perfect, They spool up as fast as the Nismo's and produce more power...What more can you ask.

Hi Sub Boy so are you saying that the Garret - 5's 'WILL' make 500 bhp on std cams with relatively low boost, why will they make more power than the 580's?

[GT-R Glenn]

HKS no longer make the 2530's....But there still may be a few floating about.

Mine were brand spanking new in a very flash HKS box...:P
From TradeMe ....

I cant really be bothered entering into this discussion other than to say , Kyle please use the search function as this discussion has been done a lot already.
Why would you need a different radiator ?
My RS581's made 482hp at the wheels @ 1.3 bar ....

Hi Sub Boy so are you saying that the Garret - 5's 'WILL' make 500 bhp on std cams with relatively low boost, why will they make more power than the 580's?

I would think the difference would be minimal if any.
580's are quite an old design now.
The 2860r-5 would just be a better, longer lasting more efficient option.

Chris I would just like to skite again and say my car makes more power than yours at the same boost :P

2860r-5 vs 2530

Which incidentally is what I have said from day one of posting on these forums ....
Even before I bought some.
But, the garretts are easy to find and bloody near the same.

[Tiger_kpt]

Originally Posted by GT-R Glenn

Why would you need a different radiator ?
My RS581's made 482hp at the wheels @ 1.3 bar ....

Hi.
Thanks for your input. I did use the search function and couldn't find anything on the NISMO type turbochargers on here, only the HKS variations. And definitely no comparison of the two.

When you say your RS581's (did you mean RS580's? Or are RS581's another model number?) made 482bhp at the wheels @ 1.3bar...

What engine model was this on? And what other engine modifications were you running at the time alongside them?

I am intending on running the same boost level on MAYBE the NISMO RS580's... with a mapped Apexi PFC to suit, std injectors, std cams, std cylinder head, std bottom end. Is this possible? What sort of figures would I be able to see (approx)? What rpm powerband do these turbochargers operate within (low down, mid or high up)? And how would they affect the responsiveness of the GTR in this setup for fast road driving?

I will be upgrading the OEM radiator and oil cooler to good quality aftermarket units, basically because the OEM units are cr*p. I have always done this on Jap turbocharged cars, RX7 FD for example.

[Sub Boy]

Originally Posted by GT-R Glenn

Mine were brand spanking new in a very flash HKS box...:P
From TradeMe ....

I cant really be bothered entering into this discussion other than to say , Kyle please use the search function as this discussion has been done a lot already.
Why would you need a different radiator ?
My RS581's made 482hp at the wheels @ 1.3 bar ....



I would think the difference would be minimal if any.
580's are quite an old design now.
The 2860r-5 would just be a better, longer lasting more efficient option.



Chris I would just like to skite again and say my car makes more power than yours at the same boost :P

2860r-5 vs 2530

Which incidentally is what I have said from day one of posting on these forums ....
Even before I bought some.
But, the garretts are easy to find and bloody near the same.

LOL Glenn....Trade Me, Not from HKS, No longer made, as I said still be some floating about.
Not saying that the -5's are as good as 2530's....But oh so close for less cash.

Yes....You might make more HP, but diff dynos, diff curves...And prob more boost that I am prepared to run, But yes you win.

....But what I have now is plenty scary enough thanks.


Still say, Bang for buck the -5's are the go

[GT-R Glenn]

LOL

I would have bought 2860r-5's no doubt about it , if I hadnt spotted the HKS hairdryers.
Kyle my 581's were the Lemans RS581 ex Gibsom Motorsport ie the exact same turbo as the ozzy touring cars run in 1990.

I will be upgrading the OEM radiator and oil cooler to good quality aftermarket units, basically because the OEM units are cr*p. I have always done this on Jap turbocharged cars, RX7 FD for example.

Really ?
ok

You wont get away with standard injectors unless you dont want to make anymore power than a standard engine.

which is the better turbocharger for a standard GTR33 with uprated intake, exhaust, fuel pump, dump valves, coils, dump valves, intercooler, mapped Apexi PFC, clutch?

TBH without wanting to piss off Sam, the SS garrett equivililant 2860r-7 would be a better option.
Which again opens a tin of worms.
Those blowers on a standard engine with pfc ,injectors, pump,would be a pretty good option.
Or just buy some steel shaft standard turbo's and just leave everything standard.

If you blow you engine up and ask for diagnotic help to find out why it failed you are shit out of luck asking me.
Ask the forum clown

GT-R Turbos << LOOK AT THIS

http://www.gtr.co.uk/forum/search.php?searchid=2367251 << Read this / If it doesnt work "search" "advanced" type "nismo turbo" search "turbo" section