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R33 Gtr Mods Advice

Zerrun

By Zerrun,
in Engines & Forced Induction

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Zerrun Apprentice

Zerrun

Posted
Posted (edited)

Hello :cheers:

Been reading alot of forum posts here and seems like a pretty knowledgeable group of people.

Anyway ive got a stock r33 gtr bar blitz pod filters, powerfc and a new mandril 3.5" custom exhaust being fitted this week and tuned(il post the dyno in a few weeks when i get back from work).

What i wanted to know was your opinions on engine mods and expense with labour time (as i dont have the most time to actually do them myself unless their minor) The engine in my car has done approx 100-150 thou km's, I want to get it to 450awkw.

Would it simply be more time/cost efficient to purchase a N1 long bare motor and use that as the base then turbos etc? If anyone has bought a new engine and done this i would like to talk to you if thats possible :down:

Edited by Zerrun
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https://www.sau.com.au/forums/topic/183323-r33-gtr-mods-advice/
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Brockas Proficient

Brockas

Posted
Posted

I'm pushing 360rwkw @ 20psi with an N1 crate motor and HKS 2835's.

My tuner is hesitant to push it any more than this, as the N1 heads are still the same as the normal RB26's, and apparently experience valve float around 350rwkw.

Also, although they have a balanced crank and "semi-forged" (read: cast) pistons and rods, they have standard piston rings as far as we can tell, which would mean they wont like much more than 20psi.

ike Collaborator

ike

Posted
Posted

Try 25-30K if you want it to last. Thats just the engine and thats conservative.

Upgrade all your coolers.

That's a shitload of power.

Even bolting stuff onto a new N1 bare engine will not give that reliably.

Then overhaul all the rest of the running gear.

Big bucks

R31Nismoid Grand Master

R31Nismoid

Posted
Posted
i thought it would cost somewhere near there but i wouldnt like to spend more than 20k on the engine all up

you'll be miles over 20k if you include brakes, suspension, clutches, diffs, gearbox etc etc etc.

When i said 15-20, i was just talking engine bay

wrxhoon Grand Master

wrxhoon

Posted
Posted (edited)
you'll be miles over 20k if you include brakes, suspension, clutches, diffs, gearbox etc etc etc.

When i said 15-20, i was just talking engine bay

450 kw with $15-20 K? what are you going to buy with 20k ? not even the parts , for that kind of power you will need a stroker kit say a 2.8 tomei HKS or something like that . The kit alone will be around the $8 k mark and all you get is a crank, pistons rings and rods, add bearings oil pump new main and rod bolts, water pump bore and hone and deck the block ( with a torque plate ) another $3 k , thats $11k in parts and you only have the bottom end. Spend another $6-7 k in the cyl head ( port and polish, new valve springs, retainers,head studs cams etc...) Your $20 k already spent and you havent bought any gaskets or paid for R+R from the car ( say $1.5 k)or sassemble the engine another $1.5 k .

What about fuel, injectors , pump , pressure reg mybe a fuel rail , another $2k? you will need some turbos to get this kind of power as well as exhaust manifold, dumps, front pipes, say another $5-6 k? what about cooling system , for this power you will need abigger radiator + oil cooler , another $1.5 k? you will have to upgrade the intercooler and the inrecooler pipes as well, another $1.5 k?

With all this power you will need a strong clutch , some jap twin plate ?? Another $2.5 k ?? With this kind of power the box will need upgarding too, It never ends , you may break a front diff or even a rear diff .

I forgot .... with this power how long before the 5u block cracks , not very long at all by my experience so it will be safer to start with a NISMO GT block ( RRR)or at the very least a N1 (24u ).

I forgot ... you will need a few gauges to monitor everything , say boost, coolant temp, oil temp, exhaust temp and maybe a wide band AFR, but thats only another $1.5 k , when you spend $40-50k , anothe couple is nothing ....

I forgot you will have to tune this as well , so you will need some computer as well as pay for dyno time and tuner.. another $2-$3K? Shit I lost count by now .......

Did you say brakes ???? Suspenssion? Wheels ?? Tyres???

If I was him I would leave it stock with maybe GTSS turbos ( or something like that) and enjoy it untill she blows up. But then again thats me , been there and done that many times before .....ah and I never had to pay for labour , a small saving there .....

As most of us know when you strart big power mods you NEVER finish and you need the bank as well

Edited by wrxhoon
Brockas Proficient

Brockas

Posted
Posted

Lets not go over the top here if he just wants a power figure.

Simon Natalotto over here did 638rwhp (472rwkw) and 131mph to back it up, with a 5u block, built 2.6L + t04z, standard box (albeit he's broken a few), and standard driveline (as far as I'm aware).

Basic's would be a well built std capacity motor (allow 13-15k), fuel system (2k), single turbo (4k), and a decent clutch (1.5k).

Thats assuming all the basic mods like exhaust, cooler, power fc, etc etc are already done.

Still a long way off from fitting it into a 20k budget including labour though...

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