Power Estimate.

[ECR 033]

i know there is a thread on this... i had a read but can't find my exact setup.

just curious... cheers.

Car: 89 R32 GT-R

Mods:

Fresh engine -

-CP Forged pistons

-ARP Head studs

-Metal head gasket

-Stock rods

-stock cams

-ACL bearings

-full reco head (all stock)

-N1 Oil Pump

-New water pump

-stock fpr and fuel rail

-BOSCH 023 pump

-Garrett TO4z (.84 rear housing i think)

-Turbosmart 50mm Ext. gate

-Power FC

-Z32 AFM's

-Blitz 700cc injectors

-HKS Pod's

-stock cooler with HKS piping

-3 1/2" exhaust from turbo to rear cannon.

a rough guess anyone?

cheers.

- Elec boost controller to come.

[kessian]

Pretty sure there is a hell of a lot of TO4Z results in the rb26dett turbo thread.

[Johnny]

Over 400killerwasps; when does the turbo make boost? is it streetable

[R31Nismoid]

440rwkw if the motor is built well

[Strik3r]

i'd say he'll run out of fuel before he hits that.. also need some pretty decent headwork to pull that sorta a power figure from a t04z... not to mention that hes running stock rods, which are a known weakpoint in the rb26's

if you push any more than about 350rwkw you risk bending a rod. not sure how much that fuel pump can support either... you should be talking to your engine builder/tuner about this.

[jonn]

not to mention that hes running stock rods, which are a known weakpoint in the rb26's

if you push any more than about 350rwkw you risk bending a rod.

FAIL!

Plenty of strong engines out there using the std rods. That are actually quite good and can support those power levels quite easily.

[R31Nismoid]

^^ agreed.

bent rod @ 350rwkw... not a chance.

Plenty of CIRCUIT motors with BIG RPM 380rwkw+, stock rods.

I dunno where you get a known weak point from. I've never even seen someone post here since 2002 about bending a GTR rod thats how good they are.

[Strik3r]

i dont know any people risking a $6-8k forged motor putting out close to 500hp on standard rods.. maybe its a Vic thing ? For the sake of <$1k, its worth the peace of mind. weakpoint was referring to the fact that the block and crank can take 800hp+, and stock pistons will generally withstand quite a bit too (if you replace the rings).

Im not saying they will fail @ 350.... but your getting close to the limits imo. each to their own, its your motor !

Regardless, it seems to me that your three quarters of the way through a build. Do yourself a favour, save up a few grand and finish it properly. Rods, cams, port+polish, some other headwork (valve springs) and the fuel system and you can hit 600hp+ safely and it will drive better. Although keep in mind 700cc injectors would be getting pretty high duty cycle to try and push out 600hp... i'd be thinking about upgrading those too (shouldnt cost you much if your happy to sell yours and buy second hand). else, just keep the boost to ~21psi and enjoy your 550 horsies

[R31Nismoid]

People have done 440rwkw consistently on GTR Rods (ala-Paul)... and he's not the only one.

Plenty of GTR's getting around with close to 400rwkw, stock rods.

So thats another 100rwkw, or what, another 180odd hp @ the motor, nothing to sneeze at, at all in my book.

Why spend $1000 if you dont have to though?

Its like say spend the money on cams, you dont need those either so why spend the $600odd+labour?

Same with Plenums ($800+) and everything else, if you dont need it and stock is perfectly fine... stands to reason that you use it

So you can kinda see my point.. suddenly $1000 can turn into 3k+ for no real reason other than spending it

[ECR 033]

Engine build is done, its cost me alot to get it this far, i was spending money on other area's of the car not only the engine, so money was going quick..lol.. so i just replaced the things I thought really needed replacing, i had no power figure in mind at the time, but after each mod i did, it seemed a waste to not upgrade the next thing in line. (this can continue on and on.... cams, head work, etc. but money doesn't continue on).

and that (1st post) is what i ended up with.

400kw would be great... i only had about 200kw before the build.

so would my fuel pump be upto the 400kw or so?

cheers.

[Guilt-Toy]

i hate money.

[khamb]

my engine is currently being built atm aswell

im looking for about 350kw+ @ wheels with about 20 psi

hopefully i can achieve it.

the sort of work that i am doing

upgrading turbos to

GT2860

PowerFC

Forged Rods

Forged Pistons

Sard injectors

Sumb baffle

Metal head gasket

N1 oil Pump

and alot of other little gizzmoes.

let me know what you guys think.......

[XKLABA]

Cams, fpr and intercooler are proberbly the ownly limiting things, all will start be a pain before 350awkw, rods with good tune should take 400awkw, 700cc should be same.

Do your engine a favour get get rid of the HKS pods if they are the foam type as they don't seal real good where the foam weets the plastic.