Jump to content
SAU Community

2530's dynoed today

markr34gtr

By markr34gtr,
in Engines & Forced Induction

 Share

Recommended Posts

markr34gtr Experienced

markr34gtr

Posted
Posted

had my r34 gtr dynoed today with hks 2530 turbos.

at 1.00bar boost made 249rwks.

it was running a bit lean even when we tried to screw the fuel pressure up . but no joy..

we think the fuel pump could be out off puff.????

also could be the mines ecu playing up.or air flow metres out of resolution.

we only revved it to 6800rpm in 4 th gear so we think theres heaps more power left.

also the hks standard actuators seem only to hold about 1.3 bar boost with my blitz id 3 controller. will the heavy duty hks ones do the job.?????

i think a apexi pfc pro ecu , hks 280lt fuel pump should help ..

what do you guys think..????

Link to comment
https://www.sau.com.au/forums/topic/28530-2530s-dynoed-today/
Share on other sites
markr34gtr Experienced

markr34gtr

Posted
  • Author
Posted

is it possible to disconnect the plumb back bov and vent the to outside air.

seems to be a fair bit of oil blow back into the turbo inlets..

the car had no oil catch tank when i bought it and has 13000ks so could just be old oil build up...

cheers.

Ustasa Enthusiast

Ustasa

Posted
Posted

1. Check that the standard bov/s are not leaking.

2. Get someone to watch the ignition timing from a timing gun. The only problem with this is some guns have hopeless shielding and cause all sorts of misfiring problems.

3. As long as the a/f ratio hovers around 12:1 or richer then no need to worry.

Keep us posted :D

Sydneykid Grand Master

Sydneykid

Posted
Posted

Hi Mark, the standard GTR pump is 190 litres per hour and supports 420 bhp at standard pressure. That's around 265 rwkw, so I would say you have run out of fuel pump capacity.

I would however check the fuel filter as you would be surprised how many times that is the cause of premature leanness.

We use a lot of Bosch 044 pumps, they are 330 litres per hour and support 730 bhp at 73.5 PSI. They are way cheaper (about half the rpice) of an HKS pump, which is only a Bosch 975 with HKS stickers on it, in a HKS box.

The standard 65 mm GTR AFM's have resolution up to 300 rwkw, so I doubt that is the problem.

I personally have not had good experiences with Mines ECU's, in fact this applies to all pre-programmed (chipped) ECU's. I have no idea why, the atmospheric conditions are not too dissimilar and the fuel (98 vs 100) is not significant. But they all display several unfavourable characteristics somewhere in their fuel and ignition maps.

Lastly, a question for you, why are you favouring a Power FC Pro over a standard Power FC?

Hope that is of some help.

ylwgtr2 Grand Master

ylwgtr2

Posted
Posted
Originally posted by Sydneykid

Hi Mark, the standard GTR pump is 190 litres per hour and supports 420 bhp at standard pressure.  That's around 265 rwkw, so I would say you have run out of fuel pump capacity.

I would however check the fuel filter as you would be surprised how many times that is the cause of premature leanness.

We use a lot of Bosch 044 pumps, they are 330 litres per hour and support 730 bhp at 73.5 PSI.   They are way cheaper (about half the rpice) of an HKS pump, which is only a Bosch 975 with HKS stickers on it, in a HKS box.

The standard 65 mm GTR AFM's have resolution up to 300 rwkw, so I doubt that is the problem.

I personally have not had good experiences with Mines ECU's, in fact this applies to all pre-programmed (chipped) ECU's.  I have no idea why, the atmospheric conditions are not too dissimilar and the fuel (98 vs 100) is not significant.  But they all display several unfavourable characteristics somewhere in their fuel and ignition maps.

Lastly, a question for you, why are you favouring a Power FC Pro over a standard Power FC?

Hope that is of some help.

Hmmm this puzzles me as my 34 GTR had 241 rwkw before i fitted 2530's and then 295 rwkw after 2530's hks maniflods and greddy plenum...i have a remapped SIFT ecu and the fuel graph seemed ok on the readout but i really think after i fit all the hks internals i will need to fit the power fc that i have and up grade the fuel pump....as far as i know i i have a standard pump...the dyno my car could have been out although i went to 2 diffrent places...what do you think sydney kid?

markr34gtr Experienced

markr34gtr

Posted
  • Author
Posted

just checked my air flow meters. they seem to have a bit of oil on them from the bov plumb back system.

might have to pull the intercooler out and bov plumb pack pipes and clean them up.

the car has 14000klms and never had a oil catch tank. and was running 1.2 bar boost with standard turbos when i bought it...

i re gapped the plugs to .8mm. and need to get some ngk bcpr7eix-11 plugs.

hard to find here.. might have to import some over....

looked at the nismo fuel pump 280lt/hour at 3bar for 500bucks.

should be a direct fit i hope.?????

see how it goes after i clean the oil up......and re dyno it.

Sydneykid Grand Master

Sydneykid

Posted
Posted
just checked my air flow meters. they seem to have a bit of oil on them from the bov plumb back system."

You have the BOV plumbed back before the AFM's? That's not right, they should be between the turbo's and the AFM's.

"might have to pull the intercooler out and bov plumb pack pipes and clean them up."

We use kero and metho mixed 50/50, works a treat.

"the car has 14000klms and never had a oil catch tank. and was running 1.2 bar boost with standard turbos when i bought it..."

You not blow/use oil at 14,000 k's.

"i re gapped the plugs to .8mm. and need to get some ngk bcpr7eix-11 plugs.

hard to find here.. might have to import some over...."

Good choice, same plug as we use.

"looked at the nismo fuel pump 280lt/hour at 3bar for 500bucks.

should be a direct fit i hope.?????

That's very expensive for a Bosch pump. Read previous post.

Hope that helps

markr34gtr Experienced

markr34gtr

Posted
  • Author
Posted

i ordered the nismo pump 280 lt/hour. think its a denso brand direct fit. i hope.

pulled the cooler out and all plumb back pipes and cleaned them...

the cooler was pretty clean. the bov return pipes had a bit of oil build up in them.

ordered a normal power fc and hand controller ....300zx meters also.

also on the way is hks type r intercooler...

been lookin at those new ATS carbon twin plate clutches...what they like.????

or ogura twin plate....

cheers...

EVL R33 Experienced

EVL R33

Posted
Posted

Mark, good choice on the fuel pump, same one I put in my car.. You and I are going to have very similar mods by the looks of it... I've currently got 421hp at all 4 wheels on 1.25bar so an R34 should get more than that due to age... Good luck and keep us updated..

Sydneykid, I don't think the Nismo pumps are exactly the same as Bosch ones as you can't direct fit an 044 into an R33 GTR without a heap of work whereas a Nismo 280ltr drops straight in...

Brett

EVL R33 Experienced

EVL R33

Posted
Posted

My mistake sorry... :P

I had to go on 'expert' advice and was told by numerous people that no decent bosch pump would straight fit into my GTR. I didn't want to go with surge tanks etc and with the $220 I got for my stock pump it only cost me $320 which is around 044 pricing without the hassles... :)

I know an 044 fits an R32 GTR, not sure about an R34 though, do you???

EVL R33 Experienced

EVL R33

Posted
Posted

Mark, what price have you been given for Nissan 300zx AFMs? Mine cost me $440 each brand new delivered to my door and they are covered by Nissan Aus for the 12 month warranty... How much are the Bosch ones?? And will the PFC like them? Can you just pick Z32 out of the list for the Bosch ones??

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

    • TurboTapin
      boost source Size Garrett gt28 gen2

      By TurboTapin · Posted

      You just need to remove the compressor housing, not the entire turbo. I would not be drilling and tapping anything with the housing still on anyways. 
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      So, I put my boat on a boat. First of all, I'm going to come out and say it. Why is Tasmania not considered a holy goal, an apex that all road-legal modified cars go to, to experience? This place is an absolute wonderland of titanic proportions. If people are already getting club runs for once in a lifetime 30 person cruises to Tassy then I've never seemed to see it. It is like someone replaced the entire place with an idyllic wonderland for cars, and all of the people living there with paid actors who are kind, humble, and friendly. Dear god. After doing a lap of almost all of the place I've found that it's a great way to find out all of the little things that the car isn't doing quite right and a great way to figure it all out. All in all, I drove for 4 hours a day for a week and nothing broke. I didn't even need to open the engine bay. This is by all means a great success, but it has left me with a list of things to potentially address. I also now have a 3D printed wheel fitment tool which annoyingly hasn't got any threads in it to actually assemble it. I might be able to tape it together to check the sizing I actually want to use, but it'll likely involving pulling the shocks out to properly measure travel at least at the front, and probably raise the car while I'm at it, at least in the rear. I scraped on quite a few things and I'm not sure how else to go about it. I was taking anything with a bump at what felt like 89 degree angles. And address those 10 other tasks. And wash the car. God damn it is dirty. And somehow, the weather was perfect the entire time - And because I was on the top of Mt Wellington it turns out it was very much about to freeze up there. I did something I typically never do and took some photos up there in what must have been -10 and the foggy felt like suspended ice, rather than mere fog. If you own a car in Australia, you owe it to yourself to do it.
    • QB6SAGR
      Battle of the broken skylines

      By QB6SAGR · Posted

      Damn that was hilarious, and a bit embarrassing for skylines in general 😂 vintage car life ey. That R33 really stomped. Pretty entertaining stuff
    • cosline
      R32 gtr transmission strength, billet plate

      By cosline · Posted

      Hi, I have a r32 gtr transmission. Does any of you guys have an idea how much power it will hold with the billet center plate and stock gearset? At what power level and use did yours brake with or without billet plate? Thanks, Oystein Lovik
    • Rezz
      Spotted on the street....

      By Rezz · Posted

      Saw this replica police car based on a Mitsubishi Starion XX parked next to a 'police box' (it's literally a box) in Hirohata, Himeji City in Hyogo prefecture the other day. It's owned by Morii-san who is a local Mitsubishi Starion enthusiast. According to a local radio station blog post, he always wanted to make a police car himself based on ones he saw in his favourite Manga comics.  As it's illegal to modify a car to look like a police car and drive on the road, Morii-san tried many times to get permission from Aboshi police station headquarters nearby. They refused initially by after they got tired of that they granted him permission. However, the car can only be displayed on private property and obviously can't be registered as long as the police livery is present. The car was completed at a cost of 1.5 million yen (US$ 10,000) in addition to the car cost. A location was chosen outside Hirohata Police box where the car can easily been seen from the street. Morii-san has two other Starion road cars, both widebody GSR-VRs.
×
×
  • Create New...