GT-R turbos on the VQ37

husam2012

Yeah I'm crossing my hands that there's no leaks anywhere and that everything works as planned :/ had too many delays already.

I was actually trying to start it tonight to check for leaks etc but it looks like my starter cable is shorting against the turbo so I'll have to unscrew it and bend it some more.





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Creator of the GTR TT Conversion Kit, NA Record Holder (401WHP)
Ecutek Master Tuner (VQ37, VR30, VR38, B58, S55, S58)
BTWTuning

carlitos_370z

Nice work dude!!!!!

adam4g63

Cresent wrenches?!? Lol

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KngScottieV

As much as I personally hate them, sometimes you have to if the normal wrench would be to long. I hate hacking up my tools unless I really, really, have to.

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2013 Nissan 370z Magma Red Base w/Sport package 6speed. AAM intakes (S-line for now, still needs tuned), Berk HFC's, ARK DT-S cat-back, CJM baffled oil pan, and FI 34 row oil cooler.

husam2012

I was using these wrenches for the AN fittings. I keep losing the odd size wrenches so I just kept these around haha


A little update and a few questions for phunk/ anybody experienced

I connected pretty much everything except the accessories and tries startinf the car.
I probably had a vacuum leak the first time plus my breather is unplugged (see pics on factory intake)
Anyways, I tried starting the car just to check for oil leaks and to see if everything was installed good before I wrap up everything else but it kept cranking normally and never started. I smelled the exhaust a little bit but it never started.

I tried again today after connecting a few more sensors and now the engine cranks way faster.. I'm guessing the GT-R injectors plus too much cranking flooded the engine with fuel?

Anyways I will try again tomorrow after work. Hopefully it dries by.

Also, I checked the coils with my old plugs and it had spark and I can hear the fuel pump prime.

Keep in mind this is still on stock tune and pump but just changed the injectors.





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Creator of the GTR TT Conversion Kit, NA Record Holder (401WHP)
Ecutek Master Tuner (VQ37, VR30, VR38, B58, S55, S58)
BTWTuning

SG4247

On my constant flow injection system, everytime I open the system up or clean the injectors, i get some air trapped in the lines - which makes it take quite a few extra cranks to start. Sometimes a lot, even had to prime it with gas a few times. (Same process with diesel injection too).

If I think I have flooded it for any reason, I immediately pull a plug and see if its wet with fuel. If it is wet, I pull all the plugs, and crank the engine over with the coils disconnected (to reduce the risk of a fire). Once that is done, I dry the plugs with compressed air, and let the engine sit for a while (hour or so) with the plugs out - so it can evaporate the fuel off the piston and rings. Put it all back togeher and then try and restart it.

I dont ever let a flooded engine sit with fuel in the cylinder hoping it will dry out. That is not good on the cylinder walls as it removes oil. Fuel has alcohols and other solvents in it which may corrode the wall and rings. Not to mention the fuel may drain past the rings into the crankcase and dilute the engine oil.

Jayhovah

I'm not terribly experienced with this in particular, but I don't think you have much chance at getting it to start with the different injectors or the open PCV connection on the intake.... plug that and get a tune from your tuner and I think it could start. I'd imagine they could get you something that would at least start.

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2013 Gun Metallic Sport - Gamma V3 Twin Turbogized
DIY Gamma V3 TT Install * Jayhovah's Gamma V3 TT Install Pic'Z and Vid'Z * DIY: Washer Reservoir for the Boosted

husam2012

I just opened two of the spark plugs on separate banks and they looked and smelled dry!
I'm not sure why the car was cranking at a regular speed last night and now it cranks way faster.. I double checked and fuel is reaching the rails. Spark is there also




I just plugged that pcv connection and tried again and nothing unfortunately. I was hoping to have the car start so I can make sure everything's okay.

I did ask Seb@SZ and he told me that it should start but run rough with GTR injectors.

I'm not sure what i'm missing at this point. Going to read the FSM tonight and try again tomorrow after work.





Edit: I do have a couple codes showing up on my obd2 scanner but mainly because I didn't have the throttle bodies plugged in all the way the first time I tried to start I.

P0228
P0123
P1233
P2101

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Creator of the GTR TT Conversion Kit, NA Record Holder (401WHP)
Ecutek Master Tuner (VQ37, VR30, VR38, B58, S55, S58)
BTWTuning

SG4247

So three things needed for it to start.

Compression - should have that - nothing changed there.
Spark - youve checked that - its good right? Plugs fire when the engine is cranking?
Fuel - bone dry plugs mean no fuel.

So, is there the correct fuel pressure value at the rails?
If no, then have to determine why.
If yes, then what about injectors, do they pulse during engine cranking?
If no, then then the fsm diagnostics chart should help determine the conditions required for injector cycling.

I would think it should start and run on GTR injectors with no real problem.

Just my thoughts on it!

husam2012

Thanks for the help. It cranks really fast so I'm thinking ground isn't an issue, and spark is also good so does that rule having the flywheel in the wrong position? It almost seems like theres good pressure at the rails but the injectors aren't opening at all.

Going to diagnose more tonight


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BTWTuning

ohhbcase

OP - I spent the last hour reading this thread.. Can't wait to see the dyno sheet!



Sub'd

husam2012

Thanks for reading through it! I'm really excited as I figured out why it wasn't starting!

Can anybody guess why it didnt start?


https://youtu.be/ZOFcOWro300

I'm trying to not start it anymore until I finish it!


That way I can have all the filters on first etc but it seems to run decent and doesn't even idle rough



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Ecutek Master Tuner (VQ37, VR30, VR38, B58, S55, S58)
BTWTuning

lj909

Awesome!

First guess, flywheel sensor?

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ihiryu

My guess is flywheel in wrong position.....but for funsies on gonna guess fuel pump was disconnected

husam2012

I figured it was just a dumb mistake so I traced the wiring harness and yep.. the injector main harness was disconnected!

I'm glad I didn't have to drop the trans again and that it was an easy fix.

I bought new steering rack bolts and my downpipe is arriving Monday hopefully. I'm thinking I should have everything bolted in place with the exception of the accessories so I have more room for the intercooler/inlet piping


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Creator of the GTR TT Conversion Kit, NA Record Holder (401WHP)
Ecutek Master Tuner (VQ37, VR30, VR38, B58, S55, S58)
BTWTuning