Jump to content
SAU Community

Recommended Posts

Heya guys!

Well I am doing a few mods again to the car and am wondering what limitations the standard Injectors, clutch, fuel pump and turbo have.

This could be a good knowledge base should some of you guys want to perform mods in future:cool:

I have heard that the clutch goes to about 250rwhp however i myself am making much more than that and is still holding ... JUST!! so i do agree with that statement as far as reliability goes now what about

turbo:

injectors:

fuel pump:

how many rwhp do you think they will last up to. also as discussed with members such as skyzer, rev210 and gtstvspec (THANKS GUYS:uh-huh: )instead of injectors a malpassi fuel regulator can be the way to go to get an extra 70 rwhp or so. i have heard ups and downs though about this. KILLERT did you have probs with your fuel regulator? anyone else?

Link to comment
https://www.sau.com.au/forums/topic/11579-r33-gtst-limitations/
Share on other sites

well killer-t went the malpassi as its a cheaper option than replacing the injectors. hes up to about 300-315rwhp atm i think.

He was close to 100% duty cycle with the injectors at this stage teh malpassi has given him more room to play with the stock ones.

yes a number of hard launches and ur likely to fry your clutch at your current power.

Fuel pump may or maynot last i can't remember the specs on the stocker, u may want to replace just to be on the safe side.

turbo will most likely be at its limits now.

Guest KILLER-T

I think the the most power i got out of my stock turbo and fuel pump was 240 rwhp and it made that power for around 1 month then the fuel pump died i think it was workin real hard and the turbo was on its way out at this point to but i think that was my own fault running 14-15 psi in the middle of summer

(rwkw / 0.7455 = rwhp)

Im making 272rwhp and my clutch has just gone. (Although its a hard daily driver constantly on 7psi - 249rwhp). Even though i thought the clutch wasn't slipping and felt reeeeally smooth ive realised after having my new clutch installed today that it was deffinetly lacking performance.

Stock ECU

Stock Turbo

3" Full Exhaust

FMIC

HKS Pod

68,000km on the clock

thats it....

I'm sure my stock injectors and fuel pump are nearing the end of their lives but i have no easy way of telling.

Ben.

I had a Yellow R34 GTS max the fuel pump at 311 rwhp today

so we are fitting a SAFC and Bosch pump.

This thing was making this power at 16psi with a cooler

and Exhaust and a cheap un knowen turbo ($1500) and

was still climbing but we had to back of because the fuel pump.

Will let you now the final out come but 350hp looks possible.

Guest KILLER-T

Ok the limits of my injectors is 326.3 rwhp and there is not alot of head room left in them so i know whats on my shopping list.I just need to butter up my g/f first :P

So fitting a z32 afm and fuel reg gave me an extra 22 hp not a huge amount but just enough to notice a bit more pull in the car:burnout: :burnout:

Guest Peewee

haha so true steve but over here you see a lot of guys tunig to mid to high 12's but if tuned in summer come winter when the air is denser they WILL lean out! Killer t i reckon a big pump and malpassi you will be able to stretch 50 at least from your injectors but don't skimp on your pump

Originally posted by KILLER-T

Ok the limits of my injectors is 326.3 rwhp and there is not alot of head room left in them so i know whats on my shopping list.I just need to butter up my g/f first  :)  

So fitting a z32 afm and fuel reg gave me an extra 22 hp not a huge amount but just enough to notice a bit more pull in the car:burnout: :burnout:

so the limit of your injectors of 326.3rwhp is that including the malpassi fuel regulator? Brett didn't seem to be a big fan of it the other day though????

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • That is correct. I'm using a modified ABS ring and a ZF speed sensor on my rear diff for speed input. I'm running a Haltech ecu. 
    • Been busy with the newborn. We originally thought we were going to go for a third, but we're good with two lol. He's starting to actually sleep now so I've had some energy to work on the car. It's been parked away in the garage since late November due to winter.  I went ahead and redid all my head oil drains. I originally had my front and rear head drain going into the same pipe but have since split them up. I also added an Ethanol content sensor to get ready to run E85 this summer. Tossed it on my return line. Sensor sits nicely under my intake manifold.    I also have a lot of parts that came in for my rear end. I'll be swapping over to a 3.3 final drive and doing the GK teck anti squat mod. While the rear subframe is off, I'll also change every bushing. We're planning on buying another house soon with the condition that I get at a minimum a 2 door garage, so I'll wait to have more room for this. Now onto the strange things that recently happened... After changing the lower rad hose (It had been sitting in my cabinet for well over a year and was the last hose I had to replace), I let the car idle in the garage to bleed my coolant. After running for a few minutes, it started missing. Got much worst within a minute or two and then stalled and would not restart. My crank sensor decided to crap itself. No damage, no explanation, just died. I went ahead and replaced it with another ZF sensor but the heavier duty stainless model with a shield. Tossed that in and started right up. Has anyone else seen this? I hate when things fail without cause. Luckily this was a blessing in disguise... This lead me to recheck my timing. It seems I may have had a beer or two the last time I had set my TDC angle as I was off exactly 5 degrees... I miscounted a line haha. I was running 5 degrees less then commanded. It's a little embarrassing but helps explain why my dyno operator seemed to think I should be making more then 478rwkws.        
    • Sharing results from recent Liberty Walk R35 GTR, since they are still considered as somesort of a V36 Skyline. We do them turbos too. This are high flowed SS-1 models with ball bearing conversion done.  Car have managed to pull 485awkws @ 20Psi so far pushing limitations of factory built engine. The build list for R35 GTR enthusiasts as follow : HyperGear high flowed stock turbos in SS1 (G25-660 specs) Custom titanium intake pipes. Vspec performance titanium front pipes. Vspec performance 4" titanium exhaust. Upgrade fuel pumps. 1200cc injectors. Ignition coilpacks Hks intake plenum. Hks intercooler piping. Greddy intercooler. Greddy bovs. Top-secret coolant reservoir. Emtron ecu. Straight E85. Built gear box.  
    • Nah no bearings, just slip fit.  Would be a reasonably challenging but not impossible job to modify it to run bearings but I'm hoping that's not necessary as I may have well built one myself if I end up spending hours modifying it!
    • Brumbys with good shells are bloody expensive, I've looked at 2 "cheaper" cars, and walked away from both,  plus after some research spare parts are fairly sparce I'm starting to think that I missed the boat on finding a clean one that is straight (ish) and without alot rust I'm starting to think about a old Hilux as panels and other parts are much more available as they sold tens of thousands of them I use to be indecisive but now I'm not sure
×
×
  • Create New...