I've got a swb manual NA. Last year i fully upgraded the suspension so the handling is spot on.

 

Now its time to change to a TT engine. I've been buying some parts in preparation for an engine swap this summer.

 

Its gonna look something like this:

 

Apexi Induction

Z1 2.5" downpipes

Full custom de-catted exhaust system

Nismo 615cc injectors with adapter kit

Godspeed front mount intercooler

z1 RFL BOVs

RPS clutch, Fidanza flywheel

Lightened underdrive pulley

Koyo rad

Electric fan

Z1 one-piece lightened prop

 

ECU chipped to suit

Greddy Profec B spec II boost controller

 

Internals and turbos will be standard for now with the intentions of upgrading these next year.

 

 

So what kind of power will i be looking at?

Also, what boost would be recommended with this set up. Turbos are standard but reconditioned,

 

And, what should be next on the list of things to do? :rolleyes:

oh, and is there any point in a twin intake or is that for higher powered zeds?

I would say around 360/370 hp at the fly with those mods and around .9 of a bar boost should be good, around 12psi i think?

 

You will only need a duel intake with bigger turbos etc

would be better to go for SMIC rather than a FMIC

plus the loom is going to need bringing up to twin turbo spec...

would be better to go for SMIC rather than a FMIC

 

 

I'm sure the SMICs will be a little more efficient all round but the FMIc looks too damn good!:D

you will have to be careful about the airflow to the rad, oil cooler etc when using a FMIC

also with bigger injectors you will be able to go to around 16-17 psi so you could be putting out about 450 fwhp

With that setup I would run 15-16 psi as a high settings and would expect around 390-410 fwhp

 

Most of your modifications will help with response, turbo spool up and getting that extra power to the rear wheels.

So is it just the injectors and a map that gives it big gains?

So is it just the injectors and a map that gives it big gains?

 

The injectors themselves dont offer any power gain but they do allow you to run higher boost, along with the bigger Intercooler.

 

The downpipes, decats, LW flywheel and LW propshaft all help with response, quicker revving, quicker spool up, less lag and each offer a small power increase that all adds up.

so its the injectors that are holding us back. most of us at the NWRR had around 330hp same stage tune

so its the injectors that are holding us back. most of us at the NWRR had around 330hp same stage tune

 

Stock injectors are maxed out at around 14-15psi, and you should'nt really run them at 100% duty. Any higher and they will start to lean out which causes detonation.

 

The Stock intercoolers are also pretty much doing the very best they can to cool the air at that boost.

 

The stock turbos can handle up to around 18psi before they come innefficient, however lifespan is severely reduced. I would'nt run a set of old Stock Turbos up to that PSI Myself.

 

You also have to consider the stock piston ring-lands and there vulnerablity to detonation at high boost levels.

So a full stage one tune

 

Injectors

Smic upgrade

Exhaust + decat

Re map and boost set to 16psi

 

and with that it should be running a safe 390hp

plus the loom is going to need bringing up to twin turbo spec...

 

You can use an na loom as he will be using the profec b to control boost so no need for the stock solenoids, think thats the only thing he has to take into condisderation on the wiring side, but i may be wrong.

think your right jimbo, as andyp told me i could use an NA ecu in a tt so long as i use an EBC because it doesn't have the boost circuit.

with those rebuilt turbos you could run about 16/17psi on that setup bearing in mind the stock pistons wouldnt last a great length of time, so forged pistons (87.5mm and overbore to give 2990cc) would be a must if you want more power. that would give about 450 at the flywheel.

 

the pistons and turbos are letting you down at this point.

 

only worth getting twin intake if youre set up for 500bhp or more

Edited March 22, 200916 yr by EvoluZion3

Cheers for the replies guys. Thats in the region of what i was expecting.

As legrath pointed out its aimed at quick response. The lighter swb and NA diff should help with that aswell.

 

Yeah, pistons and bigger tubs are next on the list but i'll leave them for next year. Possibly some JWT cams aswell

 

As for wiring, i'm a little clueless in that department so i'll leave that to the experts.