Rb 26 Set Up

[stasis]

Hi guys,

im pretty new to the forum and to the twinn turbos setup. I have picked up a Nissan 260rs with an rb 26 engine in it.

I need the rich expertise from the forum people in regards of the estimates projected power output for the Rb26 engine. I have read alot and trying to find the estimated projection for the power output.

PART1

Now its a 98 Rb26 still stock std. I have installed a 3" front pipe onwards till cat back all the way with a high flow cat with SS core. Also i have installed a drop in replacement filter with K&N. Ive got the 2.5"dump Hks.

I also have aerospeed adjustable cams on the way as well. With this set up plus a Power FC and a Power Fc boost controller how much Hp will i get @wheels? STD AFMs are good up to 250hp @wheels or at crank? How different will a power FC boost controller compared the the HKS proV? Im thinking of using all the comps with PowerFC (Apexi)and the boost controller to matcj it cos the boost controller is able to feed the datas into the Power Fc.

PART2

Next stage of the upgrade is the turbos. I have made up my mind with the advice from my firends to run 2530 turbos. How much power @wheels will i get if the upgrades are added up together mentioned above? Do i need to upgrade the fuel systems such as the injectors, FRP and the fuel pump if i did only the part 1 and how aboout part 2 do i need to upgrade the fuel system?? If i do need to upgrade the fuel systems, im thinking of upgrading to 800c injectors, arising rate Frp id3.1bar@idle and a bosch 044 fuel pump. This was also recommended by my friend as well. The reason why i chose such a big fuel systems set up is in future if i decides to go for more Hp i can without wasting money again upgrading the fuel system. With this do i need to change any of the internals?

Im actually after between 250-300kw@wheels. Will a HD singplate clutch with increased clampng load be enough for this set up? Clutch im thinking of getting it from Jim Berry.

Any comments or sugesstions will be appreciated. Thank you very much guys

Edited September 9, 2006 by stasis

[Faid]

if your power aim is about 300kw, you can run 800cc injectors the bosch 044 pump, and a rising rate fuel regulator would come in handy. the PFC is a good choice as many tuners know how to work the unit. but id suggest with running the 2530 turbs is getting some extensive headwork done with tomai poncams for your aplication id go with 254 deg IN and 254 deg EX at 9.15 lift with some porting and polishing, get some tubular manifolds with twin external gate ( I think HKS has them) and make the dumps from the turbos 2.5 inch and put in a nice 3.5 inch exhaust. on the twin setup i support the best flowing exhausts because the less restriction the better. the 2530's are resposive given a good tune. and a good high clamp force single plate will do the job just fine (dont know jim berry but i do know of the exedy hyperplate) but keep in mind that pusing your car at 300 kw that something is bound to break which would lead to a bottom end rebuild. and for the bottom end id go wiseco 87mm pistons, pauter rods, and if your cranck is still fine id have to be prepped and reinstalled, and while your at it put in a HKS harmonic damper ( make the car rev nicely:D:D:D

[CruiseLiner]

u dont "need" cams for that power? external gates on 2530s, why? hks dampener is pretty over the top unless u are going over 9000rpm.

so with that out the way id go...

2530s

power fc

044 pump in the tank

700-800cc injectors

hks dumps r good

3.5' exhuast minimum

jim berry clutches ive been told are the best value

z32 afm's

nismo regulator

twin feed on your stock fuel rail

i'd personally upgrade the sump to bigger capacity (9L or so and baffles)

oil cooler is a good option

u can get some poncams as mentioned but they are not "needed to make the power"

like faid said 300awkw is gonna eventually need a rebuild and add some forged rods and pistons, n1 oil pump, oil restrictor in the head, acl bearings, a good head gasket and your pretty much set for good reliability.

i cant see why 450rwhp isnt possible with those mods if the tuner knows what hes doing. the rebuild wont add power but it will help it last a long time with that power level.

thats my 2c worth

[R31Nismoid]

if your power aim is about 300kw, you can run 800cc injectors the bosch 044 pump, and a rising rate fuel regulator would come in handy. the PFC is a good choice as many tuners know how to work the unit. but id suggest with running the 2530 turbs is getting some extensive headwork done with tomai poncams for your aplication id go with 254 deg IN and 254 deg EX at 9.15 lift with some porting and polishing, get some tubular manifolds with twin external gate ( I think HKS has them) and make the dumps from the turbos 2.5 inch and put in a nice 3.5 inch exhaust. on the twin setup i support the best flowing exhausts because the less restriction the better. the 2530's are resposive given a good tune. and a good high clamp force single plate will do the job just fine (dont know jim berry but i do know of the exedy hyperplate) but keep in mind that pusing your car at 300 kw that something is bound to break which would lead to a bottom end rebuild. and for the bottom end id go wiseco 87mm pistons, pauter rods, and if your cranck is still fine id have to be prepped and reinstalled, and while your at it put in a HKS harmonic damper ( make the car rev nicely:D:D:D

Lot of very bad information here

1) You dont need external gates

2) You dont need a rising rate fuel reg

3) You dont need 2530's for 300rwkw

4) You dont need extensive headwork

5) You dont need afermarket manifolds at all

6) 800cc injectors are far bigger than needed for 300rwkw

300rwkw on a stock RB26 is quite safe and fine.

What you want is the following:

GT-SS/R34 N1's.

550cc (or there abouts) injectors.

PowerFC

Adjustable Cam gears

You already have the dumps/exhaust so your fine there. There isnt much to getting 300rwkw from an RB26, and it can certainly be done a lot cheaper than you think as you dont "need" all the add-ons that really dont give you any gain

[Adriano]

well said nismo

[LTSJayce]

Lot of very bad information here

1) You dont need external gates

2) You dont need a rising rate fuel reg

3) You dont need 2530's for 300rwkw

4) You dont need extensive headwork

5) You dont need afermarket manifolds at all

6) 800cc injectors are far bigger than needed for 300rwkw

300rwkw on a stock RB26 is quite safe and fine.

What you want is the following:

GT-SS/R34 N1's.

550cc (or there abouts) injectors.

PowerFC

Adjustable Cam gears

You already have the dumps/exhaust so your fine there. There isnt much to getting 300rwkw from an RB26, and it can certainly be done a lot cheaper than you think as you dont "need" all the add-ons that really dont give you any gain

Yep;what he said...

[stasis]

u dont "need" cams for that power? external gates on 2530s, why? hks dampener is pretty over the top unless u are going over 9000rpm.

so with that out the way id go...

2530s

power fc

044 pump in the tank

700-800cc injectors

hks dumps r good

3.5' exhuast minimum

jim berry clutches ive been told are the best value

z32 afm's

nismo regulator

twin feed on your stock fuel rail

i'd personally upgrade the sump to bigger capacity (9L or so and baffles)

oil cooler is a good option

u can get some poncams as mentioned but they are not "needed to make the power"

like faid said 300awkw is gonna eventually need a rebuild and add some forged rods and pistons, n1 oil pump, oil restrictor in the head, acl bearings, a good head gasket and your pretty much set for good reliability.

i cant see why 450rwhp isnt possible with those mods if the tuner knows what hes doing. the rebuild wont add power but it will help it last a long time with that power level.

thats my 2c worth

Hi Brad,

wats a twin feed line?

How much will it cost me for " a rebuild and add some forged rods and pistons, n1 oil pump, oil restrictor in the head, acl bearings, a good head gasket and your pretty much set for good reliability." all up? I didnt take into account these and how much will they cost me for a rebuild and the parts for it? So if i change the cams i would be able to rev up to 9krpms? . And how much did you get your N1 oil pump for if you dont mind.

Part 2 upgrades are now getting longer in the list.

1.fuel systems which includes : 800cc injectors, FRP and 044s

2. Engine rebuild have to find out about the costs to this.

3. turbos 2530s

Brad what do i need to do for a higher rev since if part im rebuilding the engine. Must well if i only need the parts.. Thanks buddy

Im picturing tha faces of the FPVs and HSVs drivers when i smoked them using a wagon or a car like you sruise probably they will mistaken the car for a "DAMN VOLVO" .

THanks buddy

[stasis]

Lot of very bad information here

1) You dont need external gates

2) You dont need a rising rate fuel reg

3) You dont need 2530's for 300rwkw

4) You dont need extensive headwork

5) You dont need afermarket manifolds at all

6) 800cc injectors are far bigger than needed for 300rwkw

300rwkw on a stock RB26 is quite safe and fine.

What you want is the following:

GT-SS/R34 N1's.

550cc (or there abouts) injectors.

PowerFC

Adjustable Cam gears

You already have the dumps/exhaust so your fine there. There isnt much to getting 300rwkw from an RB26, and it can certainly be done a lot cheaper than you think as you dont "need" all the add-ons that really dont give you any gain

ok with only power fc with boost controller, cam gears will i be able to achieve 250kw@wheels?

The reason i went with 800cc injectors and the rising rate FRP is to make way for future upgades for the turbos if i want to.

[R31Nismoid]

So do you want 300rwkw or not?

You wont make 300 on the stock turbos, so you have to change them, you have to decide then, do you want 300rwkw with lightning response, or 350rwkw with lesser response

For a street car the 300rwkw/response is what id be heading towards, and thats GT-SS/R34N1's turbos department

[Beer Baron]

YOU DO NOT NEED A RISING RATE FUEL REGULATOR. A 'rising rate' fuel pressure regulator increases fuel pressure at a ratio of greater than 1:1. What you want is an adjustable fuel pressure regulator that is 1:1 (boost vs fuel pressure increase). I am so tired of people reccomending rising rate fuel pressure regulators without any idea what they are. They have no place ever on a turbo EFI car that I can think of.

first think I would do is stop listening to your mate, and some of the people on the forum too. Go in to a competent mechanic, and ask them their advice. Also look at the RB26 turbo upgrade thread. That will be a good start.

[stasis]

So do you want 300rwkw or not?

You wont make 300 on the stock turbos, so you have to change them, you have to decide then, do you want 300rwkw with lightning response, or 350rwkw with lesser response

For a street car the 300rwkw/response is what id be heading towards, and thats GT-SS/R34N1's turbos department

yes i do want 300kw@wheels.

Heres the thing im thinking of doing the upgrades in 2 stages.

First stage is the 3" full exhaust. i still got the HKS 2.5" dump pipe. with some cam gears and PowerFC w/bosst controller trying to achieve 250kw@wheels. With this set up using the std turbos do i need to upgrade the fuel system or not?

Second stage

Definetly the fuel systems have to be upgraded cos im changing my stock std turbos int othe 2530s. When changin the turbos i will then install the dump pipse altogether. With this set up i suppose i need to strengthened the internals? The reason why i chose the 2530s turbos is they dont cost much more than the N1s turbos. So what the heck must well get a bigger one.

Beer baron, i know what you mean. Im actually having my car to be tuned either at Racpace or Hypertech in Melbourne. Ben from Racpace has told me that with cam gears, drop in ai filter and power FCs w/ boost controller i will be able to attain +-250kw@wheels. Im just double checking cos i dint think the engine is able to attain that kind of power without changing other parts. As you know parts are very expensive!!! you have to shop around. The main reason why iasked in the forum is i want to make sure what people is saying is true and to let people see potential problems as well. So.. thats just me. Sirry if i have asked the wrong questions and i better keep my mouth shut then.

I will try reading other thread but is still not goign to be in my case will try my best to follow and check

[R31Nismoid]

Im actually having my car to be tuned either at Racpace . Ben from Racpace has told me that with cam gears, drop in ai filter and power FCs w/ boost controller i will be able to attain +-250kw@wheels.

Your in good hands at least, dont listen to your mate. Ben knows whats going on and any advice he gives, is spot on the money.

And further to that, he wont make you spend money where it isnt needed

I've learnt lots from him, very wise he is

[stasis]

ok since im using powerc should i go for the apexi boost controller to match or the Hks Pro V? Im thinking of using just the apexi since it can communicate with the power Fc.