Jump to content
SAU Community

Power Issues

AsH__85

By AsH__85,
in Engines & Forced Induction

 Share

Recommended Posts

AsH__85 Collaborator

AsH__85

Posted
Posted

Hey all.

Just a quick run down. I have an r32 GTR when I originally got it it was a bit of a slug so I took it to a certain workshop best not to mention. to see if they could tell me what was wrong with it........ well, a set of turbo's (which they told me were 420h when infact were 320), power fc (with an incompatable hand controller) a tune (that made 192kw at all 4 on 18psi) and a 6k bill at the end of it. the engine started knocking 2 days later, but that is another story.

So i ended buying another rb26 (5k) , engine seems tidy supposable about 60'000k's since a rebuild. I swapped all parts over and is in the car now did compression test I cannot remember exactly what it got but it was fine. but now after another mechanic has tuned it it is only getting 220kw at rw with the following mods at 14psi.

- pods

- cam gears

- garret 2860r (small ones)

- split dump's and full 3" exhaust

- Power FC

- apexi AVC-R

Thats all i can think of at the moment. That is not normal is it? just after some opinions and maybe some suggestions.

The engine wasnt leaning out just wouldent go any harder. Even the mechanic said he was expecting alot more from it.

cheers guys

Link to comment
https://www.sau.com.au/forums/topic/163381-power-issues/
Share on other sites
Devils_Advocate21 Mentor

Devils_Advocate21

Posted
Posted

Dynos are for tuning tools mainly, figures can vary alot aswell, plus have you got a dyno graph preferably with afr curve on it this could be a problem not smooth? what are the cam gears set at? did he change anything? so many questions so thats a start

Link to comment
https://www.sau.com.au/forums/topic/163381-power-issues/#findComment-3032497
Share on other sites
R31Nismoid Grand Master

R31Nismoid

Posted
Posted

He has a GTR, it already has a decent FMIC.

14psi 220rwkw = shit... thats if the dyno is on the ball.

It should really be up around 250-260rwkw or there abouts

The turbos you have, with around 20-22psi should see you around 330rwkw.

Its time to find another tuner.

Cheers.

Link to comment
https://www.sau.com.au/forums/topic/163381-power-issues/#findComment-3032625
Share on other sites
itbmils Proficient

itbmils

Posted
Posted
dyno plot please

we need to see power and AFR

also what about fuel pressure

and boost pressure

they would help

Agree with everyone else here - I have an R32 GTR with similar mods seeing 280awkw @ 18psi

have not seen any mention of mods to fuel - fuel pump and fuel pressure regulator ?

what's a std pump and fuel mixture going to deliver ?

Link to comment
https://www.sau.com.au/forums/topic/163381-power-issues/#findComment-3032668
Share on other sites
AsH__85 Collaborator

AsH__85

Posted
  • Author
Posted

Firstly thanks heaps for the reply's I am not as honed into the tuning side of cars as I would like to be, but I will tell you as much as I can.

- The tune was done about 1 month ago and they tuner's printer was stuffed something along those lines, I couldent get a print out. He showed me the results on screen. They were sharp curves and smooth all the way to 220kw then it was like they hit a wall. He said he coudlent sus it out, I am not sure if that is any kind of indication at all.

- Its only got a stock fuel pump but wasnt showing any signs of leaning out at all, he he stuck a gauge on to check the pressure and said there was heaps.

- He did advance the exhaust cam a little I am not sure exactly how much but he said it made a bit of a difference.

- It has got a factory frount mount but I assumed that would be ok for a bit more power than this, but I am far from an expert.

The car is in a few pieces at the moment with me trying to clean everything up and looking for any leaks or anything a bit dodgy. It should be all back together by then end of the weekend so I will try and get the dyno print out if he has it, otherwise I'll get another dyno.

Also whilst this has all been going on I moved to darwin right after the engine was put in. (truck drivers stole my audiobahn amp, and my tyres bald as bald when the car got here, again another story) so air temp is like 32 deg all day, and there is a vast lack of tuners and dyno's around!

Link to comment
https://www.sau.com.au/forums/topic/163381-power-issues/#findComment-3032852
Share on other sites

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • DatsunBanana
      Rear subframe stay bracket bolt removal issues

      By DatsunBanana 路 Posted

      Thanks both. All good advice. Reminds me of drilling through stone wall for drainage pipe 馃槵 I'll let you know how I get on if I still have use of my hands afterwards 馃槄
    • The Bogan
      NC MX5

      By The Bogan 路 Posted

      Finally got shipping number for the intake and throttle body, shipped by UPS, so "should" be in my hands sometime next week, fingers fracking crossed
    • GTSBoy
      [HOW-TO] Winter Steam-Clean & Odour Removal in 30 min

      By GTSBoy 路 Posted

      I'm so far behind in the jobs I have to do at both work and home (including car) that I have become immortal. There's simply no way that I can die now.
    • The Bogan
      [HOW-TO] Winter Steam-Clean & Odour Removal in 30 min

      By The Bogan 路 Posted

      Each to their own I guess  Me, I put just as much time into cleaning inside of the cars as I do on the outside As for getting wet, it is really no different than steam cleaning the carpets at home, apart from the cars carpet dries alot faster than the house, again, I only do it in the hotter months and leave the car opened up for a few hours As I only do it yearly, it is just before I do the diff and gearbox service, so I clean the carpets, then it's up on stands, wheels off, service, clean the undercarriage,  grease the bushings and do a nut and bolt check on everything  Disclaimer: I typically had all the time in the world to kill when I was working 馃ぃ, so spending a full day or 2 cleaning, serving and "looking at stuff" was,  easily achievable, and a fun mental therapy day As for time to kill, I retired last Wednesday, so apart from my physical training, my days are filled with lots of random jobs around the house and garden...."Idle hands are the Devils something something" I am also buying a new house sooner rather than later, I'm actually looking at a potential property tomorrow, I'm looking forward to getting a car hoist as I'm starting to get to old to crawl around under a car, I can only imagine all the undercarriage cleaning and looking at stuff when that gets set up
    • GTSBoy
      [HOW-TO] Winter Steam-Clean & Odour Removal in 30 min

      By GTSBoy 路 Posted

      Yeah, I'm not interested in wetting the carpets, and I don't care about brown dirt/dust that lives deep in the pile or underneath. It's not like I crawl around on them in my birthday suit or eat dropped food off them (because there is never any open food in my car). The seats are alcantara (cheap Chinese imitation alcantara, to be sure!) with barely 1" of foam pad behind the surface. That's not getting wet either. Any car that I would be happy to get the interior wet, I would not care to put the effort into.
脳
脳
  • Create New...