Jump to content
SAU Community

Recommended Posts

430hp on 18psi. Anymore boost and it starts breaking down again. new plugs and splitfires and still persistant miss above 5900. Cas signal is clean.

Going to swap over coil loom and ignitor unit with a good one to see if it makes difference

MORE PROGRESS!!!

Swapped out the loom and ignitor done a quick check of more boost to see if breaking down.

Put it up to 25psi with pretty much no tuning for power just "ok" mixtures and it pushed out 467hp with a clean miss free rev. So with some tuning it should see 480hp without to many issues

New loom on order, trying to track down a new fair priced ignitor unit.

Slowly getting there

  • 1 month later...

It certainly feels like a long uphill battle. Its just been little shit holding it back.

WELL.....I would love to be posting a dyno sheet picture and figures right now but staying with the current trend with this nightmare.

Started doing runs on car to get everything up to temp while doing the usual pre-checks for tuning, on around the 7th run on decel the radiator fan decided to catch on top tank of radiator tearing out about 10 cooling rows in total. A coolant shower followed, real kick in pants considering radiator only 2 months old.

New radiator and twin thermo fan setup has been ordered so no chance of it happening again.

I think I might be jinxing ourself by posting tune dates so ill shutup about the next tune date and see if luck changes

  • 5 months later...

I second this. It's been a great write up so far. I was sorry to hear about the radiator drama testing your patients.

I'm slowly building myself a similar setup for my 32 and I would love to see the final tune and of course some more video's of it in action!

  • 5 months later...

Long time thread revival from the dead. car sat untouched in the shed for several months as the owner lost some amount of interest. Only so much can take before motivation dies off........BUT!!!!!!. I persisted with him to pull his finger out and get it finished.

Threw a set of plugs, some fresh fuel at it and took it back to the dyno today. Straight away the car was running very lean from 5500rpm onwards. Fuel pressure logs showed 13+psi of drop as revs built. The workshop pulled fuel pump out found some less then fantastic wiring so he repaired that but it didnt fix the issue completely. Going back to the basics checked the fuel filter and found that it was full of some sort of material blocking it. Change the filter and instantly the fuel pressure returned to normal and AFR's started reacting to map adjustments. Only fixed the issue after 5pm today so tomorrow is a new day and things are looking good to give it some hell.

With too much base fuel pressure and no messing with tables it ran 315kws@ 22psi on a lower rev run so with any luck all the constant stupid issues are behind us.

Hoping to be able to get some footage of dyno run for the thread. Its extremely loud in booth so might not work out.

Ive said it countless times before but Results may follow tomorrow!!!!

Log of fuel pressure before.
Untitled_zpsce9e5a9e.jpg

Edited by nick81xd

Great to hear mate, i was just thinking about this car yesterday and how it was getting on, one of my favourite builds on SAU. Would love to be able to have as much knowledge as you, please keep updating as things happen :)

And good luck, i think you need it!

THE MOONS HAVE ALIGNED!!!!!!!!!!!!!!!!

We finally got a result worth talking about last thursday. I was meant to post it that night but was busy helping a mate with his skyline to race at Jamboree yesterday.

Started with a few safe runs to check nothing was playing up with the fuel pressures and all was perfect. Adjusted base pressure and started tuning. The car must of been in a good mood because it behaved......somewhat.

The boost controller to put it honest.......is S#!T. No matter the hook up method/settings its lazy coming onto boost. Put a bleed tap on and its so much faster to build boost. Instead of build boost and holding it just works its way up to boost and hovers around that. It will be replaced very soon with something more reliable.

The standard LINK map sensor has maxed out so we stopped at a total boost pressure of 26psi.

Now to the part everyone has been waiting for all this time POWER FIGURE.

Running 25-26psi on BP98 fuel the car made 507.6hp or 378.5kws for those playing the KW game.

Looking at the boost curve you can see that how lazy it is building boost, there is easily 40hp in the mid-range area to be had by sorting that out.
My own car's engine setup is pretty much identical to this engine internally aside from i run a bigger flowing head, externally i have a ETM manifold setup with a plain GT3582, 4 inch dump and a long runner intake(vs short run greddy intake). On same boost i made 503hp, We overlayed the graph from that over this cars graph and found some interesting results. I have to edit the graph so its a bit easier to follow/read though but it looks like the GTX spools faster then the GT turbo but doesnt have the flow until higher up, the GT makes more power/psi until later. Once new controller goes in that might change also more boost added in.

On the short drive home it just stands up on the tyres in 2nd and 3rd no problem once get a bit more time will take it out for a longer drive.
Did not get any videos unfortunetly. See what the weekend holds might get time.

Dyno graph

Screenshot_2014-08-29-11-57-12_1_zpsb121

  • Like 1

Can put all the blame for having to wait on the owner of the car. It wasnt for lack of trying from me to get it sorted. It was almost getting to the point where i was going to steal the car and take it to get tuned with my own money.

videos possibly this weekend

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

    • Back again. I returned to Japan in Jul/Aug to spend time with the car on my birthday and remind myself what all the sacrifice and compromise is for. It happened to line up with the monthly morning meet in Okutama, which I have been wanting to go to for a long time. It's a unique event at a unique spot with really rare, interesting, and quirky cars. It's where all the oldheads and OGs gather. The nighttime scene at DKF certainly has its place and should be experienced if you're into cars, but there's too much bad attention and negativity around it now. IMO the better time is Sunday morning at DKF or Okutama; it's more chill and relaxed. I'm glad I was finally able to go, but not sure it's worth the drive from all the way from Nagoya immediately the day before, unless I was already staying in Tokyo for the days right before the meet, because you have to wake up quite early to make it in time. Funnily enough though I didn't drive the car all that much this trip because it was just too damn hot. While there were zero issues and running temps were nominal and the A/C was strong, RBs already run crazy hot as it is. Sure, it took it all like a champ but something about driving these cars in the ridiculous heat/humidity bothers me and makes me feel like I'm asking too much of it. I'm just me being weird and treating the car like a living thing with feelings; I'm mechanically sympathetic to a fault. Instead I was mainly driving something else around - a KX4(silver) 2001 X-Trail GT, that I acquired in May. There's a few different flavors to choose from with Xs, but visually it's the Nissan version of the Honda CR-V. Mechanically it's a whole different story as this, being the top-trim GT, has an SR20VET mated to a four-speed auto and full-time AWD! It was a very affordable buy in exceptional condition inside and out, with very low mileage...only 48k kms. Most likely it was owned by an older person who kept it garaged and well-maintained, so I'm really happy with how it all worked out. It literally needs zero attention at the moment, albeit except for some minor visual touch-ups. I wanted something quirky, interesting, and practical and for sure it handily delivers on all three of those aspects. I was immediately able to utilize the cargo and passenger capacity to its full extent. It's a lot of fun to drive and is quite punchy through 1st and 2nd. It's very unassuming -in the twisty bits it's a lot more composed than one would think at a glance- and it'll be even better once I get better tires on it(yes, it's an SUV but still a little boat-y for my liking). So...now I have two golden-era Nissans in silver. One sports car and one that does everything else; the perfect two-car solution I think👍 The rest of the trip...I was able to turn my stressed brain off and enjoy it, although I didn't quite get to do as much as I thought. I did some interesting things, met some interesting people, and happened into some interesting situations however, that's all for another post though only if people really want to know. Project-wise, I went back to Mine's again to discuss more plans and am hoping to wrap that up real soon; keep watching this space if that interests you. Additionally, while working in the tormenting sweatbox that is the warehouse, I was able to organize most of the myriad of parts that my friend is storing for me along with the cars, and the 34 has a nice little spot carved out for it: And since it can get so stupid hot in there, that made it all the more easy -after I was standing there looking at the car and said 'f**k it'- to finally remove all the damn gauges that have mostly been an eyesore all this time. Huzzah. The heat basically makes the adhesive backing on the gauge mounts more pliable to work with, so it was far less stressful getting this done. I didn't fully clean it up or chase the wiring though; that will happen once I have the car in closer possession. Another major reason to remove all that stuff is to give people less reasons to get in my car and steal s**t while it's being exported/imported when/if the time comes, which leads us to my next point... ...and that is even though it's time in Japan is technically almost up since it's a November car and the X would be coming in March, I'm still not entirely sure where my life and career is headed; I don't really know what the future looks like and where I'm going to end up. I feel there's a great deal of uncertainty with me and as a result of that, it feels like I'm at a crossroads moreso now than any point in my life thus far and there are some choices I need to make. Yes, I've had some years to consider things and prepare myself, however too much has happened in that time to maintain confidence and everything feels so up in the air; tenuous one might say. Simply put, there's just too much nonsense going on right now from multiple vectors. Admittedly, I'm struggling to stay in the game and keep my eyes on the prize. So much so in fact, that very recently I came the closest I ever have before to calling it quits outright; selling everything and moving on and not looking back. The astute among you will pick up on key subtext within this paragraph. In the meantime I've still managed to slowly acquire some final bits for the car, but it feels nice knowing there's not much left to get and I'm almost across that finish line; I have almost everything I'll ever want for my interpretation and expression on what it is I think an R34 should be. 'til later.
    • Thanks for that, hadn’t used my brain enough to think about that. 
    • Also playing with fire if they start to flow more air down low than what the stock twins can. It's not even up top you need to worry, it can be at 3000rpm and part throttle and it's getting way more flow than it should.
    • Any G40/1000 or G40/1250 results out there?  
    • You still want a proper tune on the stock ECU though. Stock tune + stock ECU with GT-SS/-9s is probably playing with fire if you're running more than stock airflow/power.
×
×
  • Create New...