RB25 Engine Rebuild for 300-350kw - Help/Opinions

[allblitz]

I wanna rebuild my blown engine. Like everyone, I want something good but keep it low cost as possible.

I was thinking of getting a T78 33D Turbo (around 350kw).

Besides the forged pistons, what other stuff are a 'Necessity' to handle such power.

Those with knowledge in this department, please give me a list of what I am looking at, and how much each part will cost.

Just trying to get an overall view of what i need and $$$ it will cost. If its gonna go above my desired budget, i might have to settle for a hi-flowed turbo, and nothing too serious in the engine.

Thanks a lot.

Husnu (Hus).

[netrati]

You don't need that big a turbo to make 350kw! T78 is a huge turbo 500+kw. You could go with a GT3040, rated for 375kw, or T67 25G, rated for 410kw. What is your desired budget?

[allblitz]

I know someone who has the whole T78 33D Kit (External Wastegate, Exhaust Manifold, Dump Pipe + a few other piping with it). It will cost me around 3K mark, which is a bargain.

Putting those costs aside - i wouldnt want to spend more than 5K on the engine. (Am I living in La La Land?)

[Suspense]

You will need

AfterMarket Computer

Injectors

turbo

Manifold

and prolly new cams

Also dont forget to upgrade your brakes

[allblitz]

Cost Costs Costs - Thats what I need to know : )

[netrati]

Do not use a T78 to make 350kw. This turbo is way too laggy and you'll have a horrible power band for only 350kw.

Rough estimate using all new Tomei stuff:

Prices USD$

Pistons 1,400

Rods 1,300

260° Cams w/pullies 850

555cc Injectors 780

1.2mm Headgasket 280

Apexi Power FC 1,200

Then you still have to add labor.

What mods does your car currently have?

[Blitz]

Dont forget the extra parts like fuel pump, gaskets, oil pump etc.

$5k isnt enough, not by a long shot

[netrati]

Valve springs would be a good idea, $400US. Make sure have a clutch that can hold the power. Intercooler, fuel reg, blah blah.

[NickR33]

are you taking the motor out yourself Hus?

if you do and can simply send it off to get machined then you should be able to get it rebuilt for less than 5K...

pistons ($1200)

rods (GTR Rods? $400)

bearings (??? maybe $200?)

water pump ($120?)

timing belt ($60?)

head gasket ($200)

head studs ($40???)

welsh plugs (???)

machining (depending on what you want/need basic tidy up probably cost $2000)

and of course anything else I have forgotten as I am not a mechanic

and a clutch to hold 350kw

[NickR33]

oops too slow on the post reply button... what Netrati said + what I said = alot more than 5K... sorry Hus:(

[netrati]

My example is using all new tomei parts. I'm sure it could be done cheaper using used parts. I'm not an expert in doing things the cheap way. I always like to buy everything new when possible.

[|\| i s m o]

hmmm i dont think 5k is enough....U would need a good ecu, new cams, gaskets,injectors

[allblitz]

Car currently has HKS FMIC, Rajab Racing Custom Clutch, HKS Hypermax Coilovers, 3" Kakimoto Turbo Back Exhaust, Hi-Flowed Turbo, Arnage LSD Diff.

Ok, put aside 350kw - say the T78 will hit 450-500kw - would i still need the same parts as what i was going for a 350kw - or extra parts?

So for 6K (excluding turbo kit) - i wont be able to do much?

[|\| i s m o]

Car currently has HKS FMIC, Rajab Racing Custom Clutch, HKS Hypermax Coilovers, 3" Kakimoto Turbo Back Exhaust, Hi-Flowed Turbo, Arnage LSD Diff.

Ok, put aside 350kw - say the T78 will hit 450-500kw - would i still need the same parts as what i was going for a 350kw - or extra parts?

So for 6K (excluding turbo kit) - i wont be able to do much?

still need cams ecu etc i think plus work and gaskets....i dont think 6k is enough..

[netrati]

450-500kw and you'll need a few more things. Aftermarket transmission, bigger injectors, forged crankshaft, probably a bigger intercooler, boost controller, radiator and oil cooler for safety, and probably 1000 other things I'm forgetting.

[allblitz]

ok.., throw away the idea of T78

I want to build an engine to suit 300kw at the wheels.

Put aside the turbo kit (I may go for a T67 25G).

Can i get a descent built engine for 6k? Or should i just buy a 2nd hand engine and drive with a 160kw skyline

[Col-GTSX]

Spend you 6k on an rb26 motor and go hard in standard format.... It will be fun...

Then when someone is selling second hand bits off their gtr... Jump in and buy their stuff

[netrati]

If you wanna make 300kw go with a TD06 L2 20G or a GT3037. You might be able to make this on stock internals. You'll still need an ecu, injectors, fuel pump, and a boost controller. Cams would be a good idea too. I think the stock headgasket is fairly strong on an rb25.

[Col-GTSX]

Remember 6k will get you a half cut... So you could sell off the trans and other bits then use the brakes and sell the intercooler... By the time you buy and sell stuff you will have like 2g's left over to spend on cams, pfc & fuel pump..... Thats what id do with 6 g's...

And of course youll get a few bucks for the blown motor

[Col-GTSX]

RB26dett with 2k spent on it in the right areas will give you 300rwkw all day every day....