Tb42e power and response up grades

[healy]

So im not the most mechanical minded person around .
So Ive done a snorkel im assuming that will help abit compared to a restricted airflow setup in the guard.
Im after cheap mods to get up and going abit quicker knowing im probably around the high 2s in weight.
First one is what bigger throttle body can I get on??
Im planning an exhaust upgrade eventually not sure if Im gonna turbo, supercharge or just add some little things to it so im leaving exhaust for awhile its already got 2 1/2.
So im after tips and opinions on leads spark plugs throttlebody etc

[nissannewby]

Do you have a budget?

[healy]

Do you have a budget?

Yeah mate its a long time project so im not in a hurry im just trying to knock of a few cheap things first.thsts why I was thinking leads spark plugs throttlebody etc first. Im more trying to get response first with a few kw. Im not trying to build a monster lol im more looking at max of 300kw one day but im running an auto and I really want to lose the lag I guess you can call it.

[Robo]

As a slow build, long time project "so im not in a hurry" as you say, this kinda make it hard to advise on which way to go as doing things 2 or 3 times happens to happen when ya build over time and a 300kw plan in mind, this won't go with that etc.

premiun $$ plugs.
new leads, dizzy cap and rotor.
extractors, but need to be changed for turbo (what I was getting at cost wise x2).
injectors serviced.
new radiator and hoses.
adjust valves.
auto trans, valve body upgrade and install cooler.
a turbo will want a oil return to sump so if sump come off for any reason then that's the time to have oil return fitted.
choose a turbo in advance and oil return size pipe to suit welded into sump.
insulate, screen, exhaust from inlet and hoses etc.
things get hazy try to plan long term.
lots ya can do, but will redo or change over a long time frame.
and it will cost lots and lots more.
cheers

[billyj]

you really need to decide now if you want to go turbo or stay na, a turbo is a fairly easy way to more power/torque but if you really want to make 300kw expect to spend 10k doing it, im currently running 4psi of boost into my tb42e unintercooled for 100kw at the rears on 33"s, thats with a restrictive 2.5 inch exhaust. the setup currently owes me 6k, but thats with a bigger fuel pump and injectors to support 300kw. tuner reckons a 3" exhaust and intercooler and it should be some where around 180kw at the rears at about 10-12psi.

as for a bigger throttle its probly possible given the top half of the tb42e intake is the same as the top half of an rb25. that said when i ran na with a vac gauge
it didnt show the std throttle being a restriction.

a 2.5 inch exhaust is plenty big enough for a naturally aspirated engine paired with a good set of extractors you will get a decent gain but it still wont be a rocket pushing 2.5t+.

std plugs are fine or one range colder for lpg and any decent brand leads will work fine.

other things are maybe put some injector cleaner through it and maybe even get the fuel pressure checked ive had a couple of std pumps die slowly over the years and when they start to go you will feel a bit down on power but the engine still runs smoothly

[healy]

I can get a garret gt42 off a mate as he has about 30 sitting in the garage I think he said its good for well over 800+hp for free. Thats whats got me thinking more about this stuff. He also has a fairly nice sized front mount intercooler off a WRX that I can have but I dont want to grab this stuff if I dont get it done. I know if I run a setup like this im gonna basically have to do a full rebuild and upgrades. Piping is an easy fix I can source that easily. The thing im worried about is the turbo to big for a standard engine setup?. What kind of manifold would I need? Obviously need exhaust not sure on size. My biggest issue is the standard ecu im assuming that would be the killer. What would be max boost on a standard block 9 maybe 11pound?? Im just trying to get the options in front of me as its all abit confusing lol

[billyj]

i got told on a std engine about 12-13 is safe if you rebuild it to suit boost then you can go nuts, a gt42 does sound big realistically you want to be making boost nice and early for good low down torque and a tb42 isnt exactly a screamer 5k is about all they go to

[Robo]

Have a talk to Bigrig about his build-up, power,acc used, cost etc .
your lucky enough to have a mate with parts he can spare or at least mates rates.
out of curiosity do you intend to keep vehicle for long, 300kw would proberly see a quick demise to your bank balance, and not just petrol costs, keeping clutches up to it, std gq cv's not strong enough.

[Alitis007]

300kw is a fair bit of power to make from a tb42 without doing some pretty full on mods healy. If you haven't noticed the quicker patrols make high torque figures because of the rev range they get used in. Imo you'd be better off fitting taller gears to give you better acceleration or even drive around with smaller rd tyres and fit your muddys when you go off rd

[healy]

300kw is a fair bit of power to make from a tb42 without doing some pretty full on mods healy. If you haven't noticed the quicker patrols make high torque figures because of the rev range they get used in. Imo you'd be better off fitting taller gears to give you better acceleration or even drive around with smaller rd tyres and fit your muddys when you go off rd

Sorry fellas 300 would be the absolute max it was more of I dont want more than that 200 to 250 would be ideal and im not talking at the wheels so im guessing around 190 at the wheels would be where it probably ends up I think from memory the tb42e is roughly 145 standard no doubt its lost around 10 over the years. By taller gears you talking diffs? Or gearbox? Or both? Im gonna change my 3.9s to 4.3s as ive still got the crown and pinions from my old rb30 I dont want to go bigger because I already have 4.3s ive set my car up so far on an unbelievable budget to get it where it is she is a very heavy girl at the moment George. Power isnt my main concern but as I understand you cant just add torque with no powergains. Thats why I am asking you blokes as I have no knowledge in this field. I really want response off the pedal and torque obviously in my mind power has to come with that. Am I right or wrong? Id much prefer a supercharger as thats gonna put the torque up more than a turbo I think but then again the turbo is cheap. im fn confusing myself now. Sorry if Im making no sense