The 18R-GTE reference manual ...

[o_man_ra23]

Yeah, I remember that too.. but alas I dont have the book at this stage.

As for the 3S, I will be building with a GT28RS, Adaptronic, sequential injection, sequential ignition with coil over plug etc etc. So really I want lots of torque, followed by a strong top end. If the lumpier NA cams will help the top end without sacrificing too much down low, then it would probably be worth finding a pair that somebody is upgrading from.

Ill have to buy a copy of 20th century performance.

[JustenGT8]

Blitz or HKS 254's are a great cam to aim for as will do exactly what you are after. Gen III are a very mild 'upgrade' but as i said if a set turns up they are worth grabbing.....whole head is a bolt on actually and would be a definite improvement if sub 500hp is you goal.

try a google search on cam settings as some good tech articles out there

[SillyCarS]

yo oman +rep on ur choice of turbo, disco potato on 2L are my absolute favourite at the moment, my room mate has one in his 180sx, at 60 km/hr he can drop it back gear and it obliterates tyres effortlessly

im planning on one myself if i stick with the 1g but i'll prob head 1j but i'll stick with th gt range

[thechuckster]

owen: 5ME injectors wont support 180rwhp - they simply wont flow enough fuel. My W50 is suffering behind the 18RTE so dont expect a long life from it. Not sure about the diff either, tho mine seems to be still functioning.

one thing this will show up is how flogged out the bushes are on the rear suspension and the real condition of the tailshaft centre bearing.

[o_man_ra23]

Yeah, after discovering the disco, it seemed the only choice for what I want.

Chuck, thanks for the tip on 5ME injectors, I am looking at SARD items, or have noticed the 13B injectors may work (saw a wild 2T-GTE running 13BT injectors)

The W50 I have needs new bearings already, so I will replace them when I do the swap, and will probably give the tailshaft a full service, and diff centre a lashing. Ill leave the bushes, and see if they stand up.

Justen, how much of an improvement is the 3S-GE head when comparing both heads after a p+p??

[JustenGT8]

A Gen III head is a big improvement over a Gen II. Mainly because it has smaller ports and no TVIS so low - mid ran ge response is improved. Also has shim undr bucket so can see more revs and bigger lift cam.

Once you pass 500hp then the HUGE Gen II ports come into their own for flow and at that hp you don't expect tp have any bottom end anyways so not an issue

13B injectors are the way to go for the 18RG or better yet 7MGTE. Zane runs the 13B but he has an extra 400cc capacity...the 13Bs are a little large and hard to contol at low duty so economy is a bit crappy. I ran them in my 18RGT as well so a well proven option.

[o_man_ra23]

I have been told that 7M-GTE injectors are a multispray pattern and would be no good in the 18RG (would fire onto the walls)?? or am I misreading something from your post??

[Norbie]

It's true the spray pattern is not ideal, but realistically this is only likely to make a difference to fuel economy and emissions at part-throttle cruise.

[o_man_ra23]

Unfortunately then, its not so good, as I wish to get SOME economy while cruising as the car will be a daily driver till the SA23 is up and about (couple of years yet). As emissions are proportional to economy, it will also shut the greenies up. Looks like its back to looking for single spray items. 534/550cc injectors should be heaps big enough shouldnt they??

[brett_celicacoupe]

you could get something as low as 250cc and youd be fine with the power you want

edit: infact i might have some 310cc 7mge/1ggte injectors you could use.

[SillyCarS]

with the australian dollar the way it is i would go all out and buy some 550's or some 720's from japan, wouldnt be more than $400, hell i got 4 x 720's for $330 about a year ago

[ra_28]

Yeah i'm runing 13bt injectors in my 18rgte they are great and like justen said there a bit rough at idle. Did you have to have to get a custom fuel rail to runs yours justen??

Cheers
Alex

[o_man_ra23]

SillyCarS... as mentioned, I want this to be driveable, so 700cc is waaaaay too big and will result in a car that is uneconomical, and the missus will refuse to drive.

Brett, I may take you up on that offer... if the spray pattern isnt too nasty.

[SillyCarS]

so ur using factory management i take it?

otherwise i would go the 700's and tune it a lower duty cycle

then later when you want to run 24 psi you will still have plenty left in the injectors

[o_man_ra23]

Itll be a MegaSquirt. The motor will never see more than 14psi... probably only around 10psi even, so I dont need to size the injectors for it, and oversizing that much is bad engineering (and I consider myself a good engineer), so its not gonna happen. 550 is the biggest I will consider, but 400 is a much nicer size and will give me smoother results.