Gtx3071 Install

[iamhe77]

He didn't think the GB would last at 300 if I recall correctly... but then neither did the GB rebuild place!

[scotty nm35]

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.

[Sunkist]

lol kewish thought the GB would die at 200kw lol

[iamhe77]

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

[Sunkist]

well if it does pop im sure he can make another with the dozen's of engines lying around his house.

[scotty nm35]

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.

[iamhe77]

Custom metal gaskets as a replacement when needed?

[Jetwreck]

Flame rings ftw......bolt it up, boost it up!

The wait for the alloy to go soft!

[Sunkist]

Interadasting

[scotty nm35]

What are you on about Aaron?

You want my turbo, right? I guess I will have to start a GTX3076 thread now.

[Sunkist]

lol after seeing that vid of the s15 im kinda scared lol

[scotty nm35]

lol after seeing that vid of the s15 im kinda scared lol

You could always drop the boost you skirt.

[Sunkist]

as if not post an update top bloke

[PN-Mad]

Agree.

Moar 3076 needed in this thread.

[scotty nm35]

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.

[PN-Mad]

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.

[scotty nm35]

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.

[slippylotion]

Why don't you guys get it set up to read/display in rpm? That's what I usually do.

[PN-Mad]

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.

[scotty nm35]

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.