Jump to content
SAU Community

Recommended Posts

Hmm maybe if I go -9's from N1's I can get my 400kw :)

For the price it wouldn't be I guess just to chase 15-20kw..Probably wouldn't even notice it. Will find other ways for further response

HKS V-Cam 2.8 :D

For the price it wouldn't be I guess just to chase 15-20kw..Probably wouldn't even notice it. Will find other ways for further response

do u have a build thread on your setup as I'm keen to learn more about -9s?

What are u making with these snails?

^Have a friend running GT-SS at 310rwkw @ 18psi (RPM dyno) approx 90-92% inj duty cycle he said. Car has been tracked many times. Fuel system and AFMs are stock.

I have the tendency to go down the same route - retain stock fuel system and AFMs

But I'm concerned about the high injector duty cycle as my car unlike his will see some street and hills use with different temperatures and varying loads.

I also have -9, RPM cam gears, stock dumps, Mine's front pipe, 3" test pipe, 3.5" Tomei Ti catback and PFC.

So all in all, is 90% injector duty considered safe? Accounting for any spikes that may occur.

I know my friend's car is a pretty good example of it's reliability at that level, but would just like some opinions with other guys running -9's who run the car on the street and track as well.

Edited by RB2600

Well what captured my attention is 350kw from -9s...what does it take in terms of boost level and supporting mods to get to this number on 98 as I don't want to run e85?

Hi Nick (levinboy) - what power are u making with your setup?

Well what captured my attention is 350kw from -9s...what does it take in terms of boost level and supporting mods to get to this number on 98 as I don't want to run e85?

Hi Nick (levinboy) - what power are u making with your setup?

I'm making 350kw on 98 pump

Full boost at 3800rpm lower depending on weather, 22psi

Built engine still 2.6

Id1000s, Nismo fuel pump

im spinning out - great numbers there on 22psi :)

pm sent

I'd say, once again, attention to detail on the setup is where the better results are. Big, size matched exhausts blah blah.

Got a sheet Nick?

I run -7's with a shitty exhaust and stock afm's. With id1000's and a walbro 400 fuel pump I make 325kw on 20psi with E85. If I fix my exhaust and chuck some bigger afm's on I'd probably crack 350kw.

It'd be much easier to do it with -9's and I don't think there would be much more lag involved.

paul - u should overlay your graph with nicks, i wonder what the difference would be in response & what revs u have full boost

Here is dyno sheet

Tuned for response, hence the drop up top and my cat mainly being restrictive

8A48BB11-9718-4233-9092-94AC91FB0942-568

Will be retuning it soon with new cat soon :)

paul - u should overlay your graph with nicks, i wonder what the difference would be in response & what revs u have full boost

Ill have a play tonight. Need a calculator and a graph to doodle on.

Fkn speed. Put it in RPM farken!

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

    • Cheers. Skyline is back on the menu, can’t get rid of it. It’s like a child you don’t want, or herpes 
    • I got back to Japan in January and was keen to get back on track as quickly as possible. Europe is god-awful for track accessibility (by comparison), so I picked up a first-gen GT86 in December just to have something I could jump into right away. The Skyline came over in a container this time and landed in early January. It was a bit battered after Europe, though—I refused to do anything beyond essential upkeep while it was over there. The clutch master cylinder gave out, and so did the power steering. I didn’t even bother changing the oil; it was the same stuff that went in just before I left Japan the first time. Naughty. Power steering parts would’ve cost double with shipping and taxes, so knowing I’d be heading back to Japan, I just postponed it and powered through the arm workout. It took a solid three months to get the car back on the road. Registration was a nightmare this time around. There were a bunch of BS fees to navigate, and sourcing parts was a headache. I needed stock seats for shaken, mistakenly blew 34k JPY on some ENR34 seats—which, of course, didn’t fit—then ended up having the car’s technical sheet amended to register it as a two-seater with the Brides. Then there’s the GT86. Amazing car. Does everything I want it to do. Parts are cheap, easy to find, and I don’t care what anyone says—it’s super rewarding to drive. I’ve done a few basic mods: diff ratio, coilovers, discs, pads, seat, etc. It already had a new exhaust manifold and the 180kph limiter removed, so I assume it’s running some kind of map. I’ve just been thrashing it at the track non-stop—mostly Fuji Speedway now, since I need something with higher speed after all that autobahn time. The wheels on the R34 always pissed me off—too big, and it was a nightmare getting tires to fit properly under the arches. So I threw in the towel and bought something that fits better. Looks way cleaner too (at least to me)—less hotboy, less attention-seeking. Still an R34, though. Now for future plans. There are a few things still outstanding with the car. First up, the rear subframe needs an overhaul—that’s priority one. Next, I need to figure out an engine rebuild plan. No timeline yet, but I want to keep it economical—not cutting corners, just not throwing tens of thousands at a mechanic I can barely communicate with. And finally, paint. Plus a bit of tidying up here and there.  
    • Nope, needed to clearance under the bar a little with a heat gun, a 1/2" extension as the "clearancer", and big hammer, I was aware of this from the onset, they fit a 2.0 with this intake no problems, but, the 2.5 is around 15mm taller than a 2.0, so "clearancing" was required  It "just" touched when test fitting, now, I have about 10mm of clearance  You cannot see where it was done, and so far, there's no contact when giving it the beans Happy days
    • It's been a while since I've updated this thread. The last year (and some) has been very hectic. In the second-half of 2024 I took the R34 on a trip through Germany, Italy, France and Switzerland - it was f*cking great. I got a little annoyed with the attention the car was getting around Europe and really didn't drive it that much. I could barely work on the car since I was living in an inner-city apartment (with underground parking). During the trip, the car lost power steering in France - split hose - and I ended up driving around 4,000kms with no power steering.  There were a few Nurburgring trips here and there, but in total the R34 amassed just shy of 7,000kms on European roads. Long story short, I broke up with the reason I was transferred to Europe for and requested to be moved back to Japan. The E90, loved it. It was a sunk cost of around EUR 10,000 and I sold it to a friend for EUR 1,500 just to get rid of it quickly. Trust me, moving countries f*cking sucks and I could not be bothered to be as methodical as I was the first time around.
×
×
  • Create New...