Changes to RB26dett to produce 500-600hp

[The Dog]

What changes must be done to a RB26dett engine to produce 500-600 hp.(oil pump,pistons.....)?The tubos will be replaced by hks gt 2535(prefered for small lug).The car will be driven every day. Is it better to buy a rb26det engine an modify it.(cheaper?)?

I readed somewhere that r34 gtr doesn't come with oil cooler.

In my country the average temp at summers is 40 C.I think a oil cooler is needed.Do you now a website that sells one?

[rb26dett]

i'm not too sure, and people, please correct me if i'm wrong, this is just my assumption.

you will need: full exhaust, air filters, turbos (have been recommended HKS GT2530), fuel pump, injectors, most probably camshafts, aftermarket ecu, boost controller, better front mount intercooler and oil cooler.

you might need: valve springs, retainers, oil sump (if planning track work), oil pump.

also, look at engine brace, because i have been told that over 500hp, the engine twists a lot and causes a lot of problem. certain parts of the chasis might need strengthening as well, someone might know better on this topic.

i think the standard internals should see 500hp, dunno how reliably though. buying an RB26DETT and modifying it might be cheaper in that you will not have to pull the engine out to modify it, but you still have to pull out the other engine at the end of the day, so don't think it's advisable, unless you've got heaps of money lying around.

and yes oil coolers are a must for these engines. driven hard in near winter conditions, temp around 15 deg c, my engine oil heats up heaps in about 10 mins. it's just one of the problems with GTRs.

try www.takakaira.com, they have all sorts of aftermarket stuff.

you may want to consider drivetrain weaknesses as well, before rushing out and just upping the power. i think the stopping power should be sufficient, but you might want to upgrade it as well. you can never stop fast enough.

[Merli]

Easy

Pod Filters

Turbo Back Exhaust

ECU (PowerFC)

600cc+ Injectors

Big Fuel Pump

Bigger Front Mount (600x300x100-ish)

Your choice of turbos:

HKS GT2510 - 500hp

Nismo N1 Turbos - 500hp

HKS GT2530 - 550-600hp

HKS GT2540 - 600-650hp

Those are rough figures (so don't all reply saying GT2510s can make 510hp), just so you get a feel for the comparative sizing of the turbos. Any of them will get you past 500hp fairly easily... Depends how much more than 500hp you want, and how much bottom end response you're willing to give up for the extra top end power.

Recommended ancillary upgrades to handle the power:

Twin plate clutch

Oil cooler

Brake upgrade (pads, braided lines, good fluid)

[nissaner]

what r the stock gtr injectors rated at? 440cc/min ?

[The Dog]

So i will need

1. Full exhaust

2. Ecu (power fc seems to be the favorite,with the boost

controler)

3. 600 cc/min Injectors

4. Fuel pump(?ltr/min)

5. Intercooler(600x300x100)

6. Oil cooler

7. Twin plate clutch

8. Brake Upgrade(size ?)

9. Engine braces

10. Race catalyst

11. Air filters

I would like to know the best brand for every component in the above list aswell as prices.Anythink else i must add to the list?

Is hks gt 2530 turbos a better matche for the rb26dett than 2535?(are 2535 more lagy?). I readed that the standart gearbox can take up to 600 hp.Is this true?The same goes for the engine internals? Do i realy need a new camshaft for the hp i aim?If i do, what duracion (degree) must i get?With allmost double power than standart shout i change the size of the whells?If so what size you recoment.

[The Dog]

How long will the engine hold tougether?As i said the car will be driven exery day.

[Guest nismo_trip]

It would probably be a good idea to get some camshafts and wheels to get the full potential out of your new turbos, maybe some 264 degrees in and out, as for your engine holding together yeah it should, maybe you might want to buy a metal head gasket to lower compression if you want to be cautious

[rb26dett]

and those big long bolts that hold the engine head to the bottom. i have heard bad things about the RB26, that this is one of the weaker areas. Jun makes a set of bolts n all that.

[OMY-08S]

to produce(353rwkw)...all i did was got the standard t28 turbos hiflowed,780cc inj,motec,upgrade fuel pump,boost,intercool,single 75mm throttle body...but mind you i had the rb26dett fitted into my vl calais which ran a 10.8 @ 127 on 20 psi...

www.axg.net/gg/ct/movies/omy11s.mpeg

[vspecv]

Originally posted by The Dog

How long will the engine hold tougether?As i said the car will be driven exery day.

in my r34,i have

trust t517z turbos

power fc

660cc injectors

bosch 044 fuel pump

trust oil cooler

hks hiper exhaust

trust cam gears

im around 600hp.

dont bother with headgaskets or headbolts or even camshafts.

im even running standard cooler.

if ur chasing 350kw+at the wheels,u may need intercooler,but if ur aim is 300kw+ approx ,above is all thats required.

there is a heap more u can do,but unless your spending time at the track,theres no real point.

u can throw an extra $10k at it,may be more durable,wont go any faster.