Jump to content
SAU Community

Recommended Posts

True, no-one can tell me when any part will go bang, there is definitely plenty of load on the gearbox now but its not like I can drop the clutch at 7k, the power comes on smooth and the torque converter dampens the torque output. Perhaps it has some more in it? I would be happy with a safer 350kw by going to the GTX3076 and not maxing it.

jeez someones getting a little sensetive lol.

he doesnt know this, and yes i havnt read of one pooping after reaching its limits either, but i have also not seen or read about a VQ25DET running over 350kw at the wheels. have you?

and im pretty sure no tuner wants to 'pop' a customers car

No, not at all.... I just find it funny hearing that it will go pop running that kind of power when the only basis for comparison is either the RB25det or the VQ35de.

I know of none running 350kw at the wheels... but how many have tried? I've read about the 2.8L VQ25det in Japan running 315awkw but that is running a VQ35de crank and TEPS rods/pistons. I'd love to see and reckon it would be golden at around 350-360 with the 3076 as a reliable daily but it ain't my car nor money and I am only going on what I "feel" the engine could do. All speculation of course :)

Exaggerate much Aaron?

I just found out the VRS top end Nissan gasket kits are discontinued so I hope I can find a suitable gasket kit to do the job. The full gasket kits for a VQ25det through Nissan are nearly $600.

Ok, just for you Alex... :)

Aaron turned up today after he heard the new turbo arrived, he helped me rip his 3071 out and fit the new GTX3076.

I decided to fit the smaller 0.82 rear housing instead of the 1.06 Tial. I was pleasantly surprised at the improvement in response, it seems like it would actually boost off the line now with a little stall. The tune is set for Wednesday night so I will let you know how it pans out.

Sounds good. Great move on the housing. Will change it significantly I think. Video of dyno please!

Make sure get a really good accurate Indication of the speed, we didn't go past 6k because it just peeled over, but that was well off the speedo in 4th. I suspect it's good for 210-220 at your rev limit. Both my tachometer and speedo read significantly high.

Ok, will do.

Gladly the 18's put the informeter speed spot on, only the speedo in the dash is out 10k's at 100. I will try and get footage of that too during the run. What do you want displayed? Speed data will still only go to 180 but that will do as the dyno will be in wheel speed axis anyway.

On second thoughts, does the dyno just store your data from last time? If so, just use what you did your previous run on. You want to see the difference in response, and don't want to stuff it up by messing to much with the speed.

I'd love to see the 71v76 overlayed if possible.

Well, no great results yet, as soon as we strapped the car down to the dyno we realised the slight overheating issue I have been having for a while was actually a blown head gasket. We did a carbon test on the cooling system and got a positive result for exhaust contamination. It looks like either a head rebuild or another engine is going in. It's very similar symptoms to what Gleeson's car is having, perhaps its a common issue/fault? I may look into the pathfinder cooling mod after all Cam. :)

With the boost at around 19psi it was flowing over 330kw still so there is good power there, at least 350 comfortably, perhaps more. Now to find an engine. :(

Alex, the 76 graph looked almost identical to the 71 graph, just at lower boost. Transient response is much better though, looks like a good turbo match for the engine.

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

    • Who did you have do the installation? I actually know someone who is VERY familiar with the AVS gear. The main point of contact though would be your installer.   Where are you based in NZ?
    • Look, realistically, those are some fairly chunky connectors and wires so it is a reasonably fair bet that that loom was involved in the redirection of the fuel pump and/or ECU/ignition power for the immobiliser. It's also fair to be that the new immobiliser is essentially the same thing as the old one, and so it probably needs the same stuff done to make it do what it has to do. Given that you are talking about a car that no-one else here is familiar with (I mean your exact car) and an alarm that I've never heard of before and so probably not many others are familiar with, and that some wire monkey has been messing with it out of our sight, it seems reasonable that the wire monkey should be fixing this.
    • Wheel alignment immediately. Not "when I get around to it". And further to what Duncan said - you cannot just put camber arms on and shorten them. You will introduce bump steer far in excess of what the car had with stock arms. You need adjustable tension arms and they need to be shortened also. The simplest approach is to shorten them the same % as the stock ones. This will not be correct or optimal, but it will be better than any other guess. The correct way to set the lengths of both arms is to use a properly built/set up bump steer gauge and trial and error the adjustments until you hit the camber you need and want and have minimum bump steer in the range of motion that the wheel is expected to travel. And what Duncan said about toe is also very true. And you cannot change the camber arm without also affecting toe. So when you have adjustable arms on the back of a Skyline, the car either needs to go to a talented wheel aligner (not your local tyre shop dropout), or you need to be able to do this stuff yourself at home. Guess which approach I have taken? I have built my own gear for camber, toe and bump steer measurement and I do all this on the flattest bit of concrete I have, with some shims under the tyres on one side to level the car.
    • Thought I would get some advice from others on this situation.    Relevant info: R33 GTS25t Link G4x ECU Walbro 255LPH w/ OEM FP Relay (No relay mod) Scenario: I accidentally messed up my old AVS S5 (rev.1) at the start of the year and the cars been immobilised. Also the siren BBU has completely failed; so I decided to upgrade it.  I got a newer AVS S5 (rev.2?) installed on Friday. The guy removed the old one and its immobilisers. Tried to start it; the car cranks but doesnt start.  The new one was installed and all the alarm functions seem to be working as they should; still wouldn't start Went to bed; got up on Friday morning and decided to have a look into the no start problem. Found the car completely dead.  Charged the battery; plugged it back in and found the brake lights were stuck on.  Unplugging the brake pedal switch the lights turn off. Plug it back in and theyre stuck on again. I tested the switch (continuity test and resistance); all looks good (0-1kohm).  On talking to AVS; found its because of the rubber stopper on the brake pedal; sure enough the middle of it is missing so have ordered a new one. One of those wear items; which was confusing what was going on However when I try unplugging the STOP Light fuses (under the dash and under the hood) the brake light still stays on. Should those fuses not cut the brake light circuit?  I then checked the ECU; FP Speed Error.  Testing the pump again; I can hear the relay clicking every time I switch it to ON. I unplugged the pump and put the multimeter across the plug. No continuity; im seeing 0.6V (ECU signal?) and when it switches the relay I think its like 20mA or 200mA). Not seeing 12.4V / 7-9A. As far as I know; the Fuel Pump was wired through one of the immobiliser relays on the old alarm.  He pulled some thick gauged harness out with the old alarm wiring; which looks to me like it was to bridge connections into the immobilisers? Before it got immobilised it was running just fine.  Im at a loss to why the FP is getting no voltage; I thought maybe the FP was faulty (even though I havent even done 50km on the new pump) but no voltage at the harness plug.  Questions: Could it be he didnt reconnect the fuel pump when testing it after the old alarm removal (before installing the new alarm)?  Is this a case of bridging to the brake lights instead of the fuel pump circuit? It's a bit beyond me as I dont do a lot with electrical; so have tried my best to diagnose what I think seems to make sense.  Seeking advice if theres for sure an issue with the alarm install to get him back here; or if I do infact, need an auto electrician to diagnose it. 
    • Then, shorten them by 1cm, drop the car back down and have a visual look (or even better, use a spirit level across the wheel to see if you have less camber than before. You still want something like 1.5 for road use. Alternatively, if you have adjustable rear ride height (I assume you do if you have extreme camber wear), raise the suspension back to standard height until you can get it all aligned properly. Finally, keep in mind that wear on the inside of the tyre can be for incorrect toe, not just camber
×
×
  • Create New...