GT-R turbos on the VQ37

husam2012 · 08-27-2017, 04:44 PM

Quote:

Originally Posted by Elmo370z

Was the car pulling timing at 6,500?

Not that I am aware. I'll have to check the final dyno sheet

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Rusty · 08-27-2017, 06:58 PM

I thought you would get around 475 to 500hp out of it on 93 oct. Still not bad.

husam2012 · 08-27-2017, 07:03 PM

Quote:

Originally Posted by Rusty

I thought you would get around 475 to 500hp out of it on 93 oct. Still not bad.

The tuner said there's around 30-40 hp more possible with some risk and another hour of dyno time but I decided against it. Just going to enjoy driving it finally haha

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Rusty · 08-27-2017, 07:48 PM

After what you went through. Enjoy driving it.

husam2012 · 08-31-2017, 12:33 PM

Well, I finally thought it out and decided to buy the CJM S1.E Fuel System. Will be installing it this weekend and tuning for Flex fuel shortly after.

Given all the bad luck i've had so far this year, i decided to play it safe and run E85 all the time just for safety.

I had my fuel pressure gauge recorded using a camera while i was on the dyno and it was as low as 42-45 PSI at redline. I decided to play it safe and to not run it much longer like that. (Gauge shows pressure at the rail but not actual pressure at the fuel injectors)

So for anyone planning to run turbos, I wouldn't recommend the OEM returnless system simply because 42 PSI - Boost PSI = actual pressure at the injectors.

In my case, it was very low 30's which probably contributed to the low power levels achieved.

husam2012 · 09-07-2017, 01:32 PM

About to install my flex fuel sensor along with the whole fuel system. It's going to be a tight fit around the turbos but I believe there's just enough space to do this. Wish me luck!

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sirnixalot · 09-07-2017, 09:43 PM

congrats!

Sorry if it was mentioned but what boost were you running while on the dyno?

husam2012 · 10-02-2017, 11:31 PM

Sorry for the lack of updates guys. Got a new job at a performance shop to make a little more money for school/bills and just started the semester being fulltime.

My bad luck finally caught up to me.

The car still runs perfect and with the flex fuel It's probably making over 500 WHP at 12 PSI at this second. But, it's probably going to spin a bearing soon.

Basically, I haven't put more than a couple hundred miles since the dyno tune but that oil pressure issue that happened a while back was still haunting me.

I finally got it up on a lift to drop the pan and cut open the filter. I found what i was expecting all along

A few small metal flakes at the bottom of the pan and inside the oil filter. I'm really sad that this happened and had hoped to enjoy it for at least a little longer.

I'm not really sure what to do at this point since i have literally no money to buy anything else for it, and not a lot of time between school and work. I was just thinking of trading it into a stealership and to cut my loses at this point.

It's been a joy to drive with this much power, and maybe someday I'll build another one just like it!

Be on the lookout for a GT-R turbo partout in the upcoming months unless something/ someone changes my mind.

Thanks everyone for your help along this journey, it has been definitely a good learning experience.

One last video so you guys can hear it's final moments

rovert · 10-03-2017, 02:55 AM

Mate, thats really, really sad to hear.
Could you possibly throw a used engine into her from a wrecker?

Jayhovah · 10-03-2017, 10:10 AM

Quote:

Originally Posted by husam2012

My bad luck finally caught up to me.

The car still runs perfect...

To be honest, I don't know a lot about engine internals and reading the fragment tea leaves in oil... is it possible that the motor will live a long life even after that episode?

Would a fresh oil change and then oil analysis at the next interval offer any clues as to the health of the motor? Maybe even an analysis of the oil you just drained?

If you are right about it, I am heartbroken for you and would echo the other reply of finding a used VHR to swap in if you can afford it... clearly you can handle the labor yourself. =)

I sent you a PM.

Rusty · 10-03-2017, 10:55 AM

I would send the oil to Blackstone for oil analysis before doing anything else. How big was the flakes that you seen?

unijabnx · 10-03-2017, 07:11 PM

Did you plan to post the design or sell the adapters so people on the forum can put together their own gtr kit??

husam2012 · 10-03-2017, 09:57 PM

Quote:

Originally Posted by Rusty

I would send the oil to Blackstone for oil analysis before doing anything else. How big was the flakes that you seen?

Unfortunately I had my boss who's been working on tuning performance cars (GTRs, Supras, etc) for a long time and he told me that it's just a matter of time before it spins a bearing considering what we saw in the oil filter.

Quote:

Originally Posted by unijabnx

Did you plan to post the design or sell the adapters so people on the forum can put together their own gtr kit??

Yes I will, I'm hoping to figure out the final piece tomorrow but I do have the website up if you want to pay to join the group buy!

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phunk · 10-03-2017, 10:47 PM

You can change the bearings without entirely rebuilding the engine or even removing the heads. That is, if you felt it was worth all the work. If you planned to build it in a year anyway, I wouldnt bother. But if you wanted to get several years from the stock engine it could be worth it.

Rusty · 10-03-2017, 10:52 PM

Quote:

Originally Posted by phunk

You can change the bearings without entirely rebuilding the engine or even removing the heads. That is, if you felt it was worth all the work. If you planned to build it in a year anyway, I wouldnt bother. But if you wanted to get several years from the stock engine it could be worth it.

I've changed bearings before without pulling the motor. You might be able to do the same thing. Depends on how willing you are.

08-27-2017, 06:58 PM	#392 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,187 Drives: 2011 Nismo GM 6M Rep Power: 2684437	I thought you would get around 475 to 500hp out of it on 93 oct. Still not bad. gbrettin, carlitos_370z and husam2012 like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

08-27-2017, 07:48 PM	#394 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,187 Drives: 2011 Nismo GM 6M Rep Power: 2684437	After what you went through. Enjoy driving it. gbrettin, Hotrodz, Jayhovah and 2 others like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

08-31-2017, 12:33 PM	#395 (permalink)
husam2012 Track Member Join Date: Mar 2015 Location: Michigan Posts: 549 Drives: 370Z Nismo Rep Power: 9469	Well, I finally thought it out and decided to buy the CJM S1.E Fuel System. Will be installing it this weekend and tuning for Flex fuel shortly after. Given all the bad luck i've had so far this year, i decided to play it safe and run E85 all the time just for safety. I had my fuel pressure gauge recorded using a camera while i was on the dyno and it was as low as 42-45 PSI at redline. I decided to play it safe and to not run it much longer like that. (Gauge shows pressure at the rail but not actual pressure at the fuel injectors) So for anyone planning to run turbos, I wouldn't recommend the OEM returnless system simply because 42 PSI - Boost PSI = actual pressure at the injectors. In my case, it was very low 30's which probably contributed to the low power levels achieved. phunk, jaytirbhaw, 2011 Nismo#91 and 1 others like this.

09-07-2017, 01:32 PM	#396 (permalink)
husam2012 Track Member Join Date: Mar 2015 Location: Michigan Posts: 549 Drives: 370Z Nismo Rep Power: 9469	About to install my flex fuel sensor along with the whole fuel system. It's going to be a tight fit around the turbos but I believe there's just enough space to do this. Wish me luck! Sent from my iPhone using Tapatalk phunk, Rusty, Hotrodz and 4 others like this. __________________ Creator of the GTR TT Conversion Kit, NA Record Holder (401WHP) Ecutek Master Tuner (VQ37, VR30, VR38, B58, S55, S58) BTWTuning

09-07-2017, 09:43 PM	#397 (permalink)
sirnixalot Track Member Join Date: May 2017 Location: Cayman Islands Posts: 685 Drives: 2010 370Z Rep Power: 57454	congrats! Sorry if it was mentioned but what boost were you running while on the dyno? __________________ 2010 Sport - LS3 swap loading 2012 Frontier - BTWTuning VK56DE swap

10-02-2017, 11:31 PM	#398 (permalink)
husam2012 Track Member Join Date: Mar 2015 Location: Michigan Posts: 549 Drives: 370Z Nismo Rep Power: 9469	Sorry for the lack of updates guys. Got a new job at a performance shop to make a little more money for school/bills and just started the semester being fulltime. My bad luck finally caught up to me. The car still runs perfect and with the flex fuel It's probably making over 500 WHP at 12 PSI at this second. But, it's probably going to spin a bearing soon. Basically, I haven't put more than a couple hundred miles since the dyno tune but that oil pressure issue that happened a while back was still haunting me. I finally got it up on a lift to drop the pan and cut open the filter. I found what i was expecting all along A few small metal flakes at the bottom of the pan and inside the oil filter. I'm really sad that this happened and had hoped to enjoy it for at least a little longer. I'm not really sure what to do at this point since i have literally no money to buy anything else for it, and not a lot of time between school and work. I was just thinking of trading it into a stealership and to cut my loses at this point. It's been a joy to drive with this much power, and maybe someday I'll build another one just like it! Be on the lookout for a GT-R turbo partout in the upcoming months unless something/ someone changes my mind. Thanks everyone for your help along this journey, it has been definitely a good learning experience. One last video so you guys can hear it's final moments

10-03-2017, 02:55 AM	#399 (permalink)
rovert Base Member Join Date: Nov 2015 Location: Australia Posts: 64 Drives: 08 Skyline 370GT Rep Power: 10	Mate, thats really, really sad to hear. Could you possibly throw a used engine into her from a wrecker? gbrettin and husam2012 like this. __________________ 08 Skyline 370GT SP Coupe 5AT: Diy TT

10-03-2017, 10:55 AM	#401 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,187 Drives: 2011 Nismo GM 6M Rep Power: 2684437	I would send the oil to Blackstone for oil analysis before doing anything else. How big was the flakes that you seen? gbrettin, Chuck33079, Hotrodz and 1 others like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

10-03-2017, 07:11 PM	#402 (permalink)
unijabnx Base Member Join Date: Jul 2016 Location: NC Posts: 50 Drives: 2016 Sport Rep Power: 9	Did you plan to post the design or sell the adapters so people on the forum can put together their own gtr kit?? husam2012 likes this.

10-03-2017, 10:47 PM	#404 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,668 Drives: 370 Rep Power: 974723	You can change the bearings without entirely rebuilding the engine or even removing the heads. That is, if you felt it was worth all the work. If you planned to build it in a year anyway, I wouldnt bother. But if you wanted to get several years from the stock engine it could be worth it. Rusty likes this. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

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