Gt2860r -7's, -9's & -5's

[KrayzieGTR]

Hey All,

I have been having the dilemma recently that seems to plague alot of skyline owners/modifiers. -7's, 9's or 5's???

I have read PAGES and PAGES of SAU threads and many PM's between myself and members in the know in regard to the differences, benefits, negatives, supporting mods etc of the GT2860R-7, -9, -5 & -1's, and although there is alot of good information there, there also seems to be alot of lets just say... bullshit!! lol ;o)

I started out not knowing too much in terms of types of turbo's and just wanting N1's (like alot of people I'm guessing) but once i started reading it became immediately obvious it wasn't so straight forward.

I am looking at a really nice, pretty quick drivable street car capable of putting on show some of the big money car (which even in stock form seems to do quite well), so something quick spooling with a bit more capability like the -7's sounded good. At the same time an argument to look at -5's came into it. For the same amount i could get more power, which sounded even better.

I then started reading about the little bit of lag, and not being able to use them to there full potential without block upgrades and so on, so after alot more thought and hours of reading i starting, a little bit hesitantly, swinging back to the -7's. Again i read more pages and more links and came across some good info on -9's which weren't really discussed in too much details earlier. Supposedly pretty much as quick spool as 7's with more head room (see forum talk... arrgggh lol) and of course more expensive pushing my budget a bit more. Now i am all confused again (plus i seen that Andrew from Kudos has got some).

Andrew from Kudos has been awesome and has supplied me with heaps of information on the topic but if its not too much of a hassle could i please ask everyone's opinion of this?? I currently have a fairly stock (from what im aware) 1990 R32 GTR import. It's in the shop after almost 2 years off the road due to minor pulley bearing issue which i unfortunately didn't have the time or money to fix straight away.... anyways i am now looking at getting it back on the road but doing a few things now i have some funds. I currently already have things like K&N panel filter, bosch 040/044?? in tank pump, nismo adj fuel press reg., Carbon twin plate clutch, R33 box, Tien sus etc. and we was currently looking at adding something like as follows:-

- GT2860r somethings??????? probably -9's

- Power FC w/ Controller

- Boost controller

- Z32 AFM's

- Head Gasket ??? not sure exact specs i would need depending on turbos???

- Pulley Kit ( for original problem)

- All other hoses, seal etc to refresh

I am also considering these but not sure what would be required for -7's or -9's and what would really be a waste of money and time (budget 7-8k total... low i know but there's a few other commitment in life at this point and if i don't do the car now I'm scared it would never happen)

- Coil Packs - Spitfire

- Adj Cam gears

- Camshafts??

- Injectors (what size is needed for -9's)

- Fuel Rail

- FMIC

- Water & Oil pumps

- Radiator

- Oil Baffles??

What do you guys think???? is there anything else you can think of??? i know its alot of info and apologise for the long message but I would love any feedback you can give and would greatly appreciate it.

Cheers,

Kristian

[R31Nismoid]

8k will be

Garrett -9's - $2300

PFC & tune - $1800

Nismo AFM's (you dont want Z32) - $800

Coil packs (if your are dying) - $550

Injectors 550's - $800

Cam gears - $200

$6450. Add on another $1000-$1200 for labour/misc parts, and that's your budget done.

If you do not have a decent exhaust, add another $1200 to the list and that blows your budget

Your stock sump, fuel rail, intercooler, headgasket, cams and so on are all perfectly fine. No need to upgrade those at all.

[paulr33]

re: Gt2860r -7's, -9's & -5's, - see my signature

[discopotato03]

I don't do RB26 but this is about as basic as it gets .

GT2530's are supposed to have about the same response as the OE R32 turbos but obviously greater capacity .

The HKS spec Garrett 707160-9 , using all Garrett guts and housings , gets going earlier so you don't have to drive around in a lower gear than everyone else to have some squirt if you need it .

Personally I think these two GT2860R based turbos cover the std to mild to slightly wild scope for RB26's . To go larger than 2530's is a bit extreme in some peoples opinion on the street .

If you don't lose sight of the weight you have to drag around with a low CR 2.56L six a GTR shouldn't be too lazy .

My opinions only , cheers A .

[bigmikespec]

You can get a D-Jetro PFC and not get the Nismo AFM's then spend that on exhaust. Or for $1800+$800 you can get a Vipec V88 so you can still use the knock sensors to pull timing if you get a bad batch of fuel plus it is a much more capable ECU than the PFC.

[R31Nismoid]

I don't do RB26 but this is about as basic as it gets .

GT2530's are supposed to have about the same response as the OE R32 turbos but obviously greater capacity .

The HKS spec Garrett 707160-9 , using all Garrett guts and housings , gets going earlier so you don't have to drive around in a lower gear than everyone else to have some squirt if you need it .

Personally I think these two GT2860R based turbos cover the std to mild to slightly wild scope for RB26's . To go larger than 2530's is a bit extreme in some peoples opinion on the street .

If you don't lose sight of the weight you have to drag around with a low CR 2.56L six a GTR shouldn't be too lazy .

My opinions only , cheers A .

HKS 2530's?

They are larger than -9 Garrett's. The -5 Garretts are the same as 2530's.

[semislickR32]

I just picked my 1994 R32 GTR up from the workshop with new 2860-7s (plus lots of reliability mods like oil cooler, sump baffles, cam baffles, 52mm radiator and injectors (700cc)) and can offer some of my experience:

• I saved a bit of cash by going with a nistune board instead of the PFC - probably not as good if you are planning to keep modding but for the mild setup I went for does everything (and is compatible with my existing ecutalk LCD display)
  
• I had read everything on this site about the -9 vs -7 debate and had decided on the -9s, but when it came to the shop (which is a well-respected SA workshop) the mech pushed back about it and reckons he's never installed -9s on a GTR, and that the difference between a -7 and -9 would need "a perfect day on the dyno to tell the difference". As I don't have any first-and experience, putting up stuff I've read on internet forums against his years of working on GTRs didn't work - basically I folded like a little bitch on his first night in prison
  
• Going from stock turbos, 11psi @ 205kw to -7s pushing 285kw @18psi is like eating Guatamalan insanity peppers - it's bloody quick!! (but of course pretty mild by SAU standards)
  

My advice:

• Go with the -9s and don't let the mechanic bullshit you into making the choice that's easy for them as opposed to what you want
  
• Enjoy whatever you get cos it will be insane (for a while)
  

[STATUS]

i would go -9's follow r31 nismoids advice above except i would substitute the PFC for a nistune remap, the ramap can do everything the pfc can with R32 ecu.

i like th -7's alot too, we do alot of them with nistune (and -5's) but many with -5's dont have the supporting mods to make the most of them which is frustrating.

[paulr33]

happy to add -7's to my sig as "avoid these turbochargers" if eveyone agree's

are they basically a tiny bit bigger than stockers but with steel wheel rear ?

[Turbo Dave]

PaulR33,

As per your signature, In the real world where would the GT2860 -9's start to pull?

I am about to pickup an R33 GTR in a week or so and am after effortless Clubsport eating power????

I am sick of these V8 meatheads telling me that turbo's are Lag Monsters!!

Cheers Dave!!

[BoostedBarge]

I am also intruiged by the -7 vs -9 debate. I am concerned about how much lag they have over a stock turbo. I have a Stagea 260RS, so lugging around an extra 200kg than a GTR. Any more lag than standard is bad. One of these days I'll bite the bullet and get a new set of turbos, but will need injectors, fuel pump and clutch as a minimum

[Turbo Dave]

Just reading this.......

http://www.skylinesaustralia.com/forums/7-...html&st=200

I'm thinking -9's for what I want!!

Thanks again SAU!!!

Edited March 2, 2010 by Turbo Dave

[MrStabby]

happy to add -7's to my sig as "avoid these turbochargers" if eveyone agree's

The -7's quoted up at $400 cheaper per pair when I priced them, and the difference between them and the -9s is not big and probably not noticeable at <300kw. Avoid is probably a bit strong until the price matches or gets very close.

[KrayzieGTR]

8k will be

Garrett -9's - $2300

PFC & tune - $1800

Nismo AFM's (you dont want Z32) - $800

Coil packs (if your are dying) - $550

Injectors 550's - $800

Cam gears - $200

$6450. Add on another $1000-$1200 for labour/misc parts, and that's your budget done.

If you do not have a decent exhaust, add another $1200 to the list and that blows your budget

Your stock sump, fuel rail, intercooler, headgasket, cams and so on are all perfectly fine. No need to upgrade those at all.

Garrett -9's - $2300???? where abouts can i get them for that price??

Guys thanks heaps for everyone's input. Thats what i like most about SAU is that everyone is willing to help out by putting thier ideas and experiences forward.

I already have a full turbo back 3" mandrel exhaust at home ready to go on with everything else. The car also already has a bosch in tank, nismo pressure reg.

I definately think -9's are for me. I dont need excessive power or anything (i thought my car stock had a fair bit of go) but i would like something obviously reliable, quick spooling and more potential for top end. I dont want the delemma of getting -7's and needing to get new turbo's if i ever wanted that bit more.

R31 Nismoid thanks for the information. just a quick question thou, you mention 550cc injectors... aren't these stock size?? if not im guessing they will fit with the stock fuel rail??

Nismo AFM's.... really?? any idea on where to get hold of these?? i thought that z32's were the best choice upgrade when maintaining the stock ECU or PFC..... this is again why i love this site!!

I think i would still be happy going with the PFC instead of a nitune board or the like, again it will just allow for more control and a little more future potential, but thanks for the alternative.

im pretty much now looking at:-

- Garrett -9's

- Power FC w/ Control

- Nismo AFM's

- 550cc?? injectors

- Adj. Cam Gears

- turbo back hi-flowed 3" exhaust

- Coil Packs (i guess if required) would yellow jckets do or spitfires better??

- Head Gasket (lower compression slightly)

Already have:-

- Fuel Pump

- Fuel Press Reg.

I think from the information i have this should be a good balanced package with everything needed to maintain a bit of engine safety.

Thanks everyone your help is priceless.

I just picked my 1994 R32 GTR up from the workshop with new 2860-7s (plus lots of reliability mods like oil cooler, sump baffles, cam baffles, 52mm radiator and injectors (700cc)) and can offer some of my experience:

• I saved a bit of cash by going with a nistune board instead of the PFC - probably not as good if you are planning to keep modding but for the mild setup I went for does everything (and is compatible with my existing ecutalk LCD display)
  
• I had read everything on this site about the -9 vs -7 debate and had decided on the -9s, but when it came to the shop (which is a well-respected SA workshop) the mech pushed back about it and reckons he's never installed -9s on a GTR, and that the difference between a -7 and -9 would need "a perfect day on the dyno to tell the difference". As I don't have any first-and experience, putting up stuff I've read on internet forums against his years of working on GTRs didn't work - basically I folded like a little bitch on his first night in prison
  
• Going from stock turbos, 11psi @ 205kw to -7s pushing 285kw @18psi is like eating Guatamalan insanity peppers - it's bloody quick!! (but of course pretty mild by SAU standards)
  

My advice:

• Go with the -9s and don't let the mechanic bullshit you into making the choice that's easy for them as opposed to what you want
  
• Enjoy whatever you get cos it will be insane (for a while)
  

Thanks for the dyno print out semislick. i your right when you say that is an important thing to enjoy what you spend your hard earned dollars and time on.

PaulR33,

As per your signature, In the real world where would the GT2860 -9's start to pull?

I am about to pickup an R33 GTR in a week or so and am after effortless Clubsport eating power????

I am sick of these V8 meatheads telling me that turbo's are Lag Monsters!!

Cheers Dave!!

Dave, I have had my 1990 model R32 import for about 4-5 years now and i can honestly say that with out any real mods (well that i was aware of anyway) i could easily eat clubsports, R8's, Monaro's... anything V8! especially from a stand still!! Lag??? how can a V8 owner talk about lag??? its not like they jump out of the hole!! with a good launch i have had clubsports 4-5 car lengths behind by 2nd gear, and its not like GTR's run out of top end as easily as some other popular turbo models. Now i know im probably gona have a few people jump down my throat with that comment but i am just saying from experience.... im not saying im a great driver or that the other drivers were any good but so far no V8 road car has got me!!

Thanks again all

[BoostedBarge]

Stock injectors are 440cc. 550cc or 700cc should be fine. You can certainly get ones to fit the standard fuel rail.

I think I read somewhere that Nismo AFMs are just Z32s with the correct plug to fit on a GTR.

Another option for ECU is Vipec. I'm running one on my 260RS. Plug straight into the factory loom and use a MAP sensor, so no need to worry about AFMs. Runs like standard and can control the factory boost solenoid or upgraded solenoid for boost control from the ECU If you want knock protection you can buy an external knock amp to feed into the plugin ECU.

[R31Nismoid]

Garrett -9's - $2300???? where abouts can i get them for that price??

Shop around is all i will say to that.

Guys thanks heaps for everyone's input. Thats what i like most about SAU is that everyone is willing to help out by putting thier ideas and experiences forward.

I already have a full turbo back 3" mandrel exhaust at home ready to go on with everything else. The car also already has a bosch in tank, nismo pressure reg.

If you still have the factory reg, put it on and sell the Nismo. More money for your budget.

Also 3" turbo back makes no sense

You have two turbos... and i highly doubt you have 2 x 3" dump's. You sure it's not cat-back?

R31 Nismoid thanks for the information. just a quick question thou, you mention 550cc injectors... aren't these stock size?? if not im guessing they will fit with the stock fuel rail??

Nismo 555/550's are direct fit. All Nismo injectors are direct fit, as with most jap injectors. Factory rail is good for over 400rwkw.

Factory injectors are 440cc

Nismo AFM's.... really?? any idea on where to get hold of these?? i thought that z32's were the best choice upgrade when maintaining the stock ECU or PFC..... this is again why i love this site!!

http://perfectrun.jp/

Cheapest place i've found for Nismo AFM's. Nismo AFM's are similar to Z32's. They are slightly different, but in "essence" they are a Z32 in a factory casing...

But as i said, they are slightly different. Nothing to worry about though. They also bolt onto your factory everything, which is another win.

I think i would still be happy going with the PFC instead of a nitune board or the like, again it will just allow for more control and a little more future potential, but thanks for the alternative.

im pretty much now looking at:-

- Garrett -9's

- Power FC w/ Control

- Nismo AFM's

- 550cc?? injectors

- Adj. Cam Gears

- turbo back hi-flowed 3" exhaust

- Coil Packs (i guess if required) would yellow jckets do or spitfires better??

- Head Gasket (lower compression slightly)

Already have:-

- Fuel Pump

- Fuel Press Reg.

You do not need a head gasket, said that earlier. You do not need to lower compression.

That is what you did in 1990. Not 2010 with 98 octance fuels (vs 91 back then).

Also IMO get a blitz dual solenoid boost controller. The PFC one is single solenoid and sometimes can have a tough time to configure/get correct so go the better method.

[bradsm87]

Z32 AFM's are bigger, cheaper and much more readily available. You'll just need air filters to match the bigger size. No reason to go Nismo IMO.

DO NOT lower compression unless U want it to be laggier. No reason to upgrade head gasket, injectors, coil packs or cam gears at that power level. Just bump the fuel pressure up a bit with the stock injectors.

[Juan_2_3]

if you've only got a cat-back look into getting a front pipe and a high flow cat

you might wanna include a oil filter relocation kit in your budget

[R31Nismoid]

Z32 AFM's are bigger, cheaper and much more readily available. You'll just need air filters to match the bigger size. No reason to go Nismo IMO.

DO NOT lower compression unless U want it to be laggier. No reason to upgrade head gasket, injectors, coil packs or cam gears at that power level. Just bump the fuel pressure up a bit with the stock injectors.

Factory airbox!!!

Why would you put on pod's when there is no need?

The cost saved of not using pods/adapters is the difference to get Nismo AFM's... and the cars performance is all the better due to the factory airbox and cold air vs pods without.

[BoostedBarge]

Hmmm one of those filter relocation kits would certainly be nice. I swear at the Nissan engineers everytime I remove my oil filter and it empties itself down the side of the block. Sorry, bit off topic, but is there any trick to change these filters without making a mess?