GT-R turbos on the VQ37

husam2012 · 04-11-2018, 02:19 PM

It seems like my lucky is always bad with this car. Tried to start the engine and it was acting weird. Upon a closer inspection it appears that bank 1 has bent valves or some funny business going on. 220 compression on bank 2 while bank 1 varies between 105-130.

Any ideas? I'm going to hope that the timing is off and will retime it tonight but if it's bent valves then it's time for another motor *

Sent from my iPhone using Tapatalk

Jayhovah · 04-11-2018, 02:29 PM

Quote:

Originally Posted by husam2012

It seems like my lucky is always bad with this car. Tried to start the engine and it was acting weird. Upon a closer inspection it appears that bank 1 has bent valves or some funny business going on. 220 compression on bank 2 while bank 1 varies between 105-130.

Any ideas? I'm going to hope that the timing is off and will retime it tonight but if it's bent valves then it's time for another motor *

Sent from my iPhone using Tapatalk

Fuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu uuck

Rusty · 04-11-2018, 02:53 PM

sirnixalot · 04-11-2018, 03:36 PM

FACK

did the motor come with any kind of warranty?

jmroy6 · 04-11-2018, 04:14 PM

Did you re-time the motor since you bought it? otherwise id get your money back for buying a lemon.

husam2012 · 04-11-2018, 11:01 PM

Quote:

Originally Posted by jmroy6

Did you re-time the motor since you bought it? otherwise id get your money back for buying a lemon.

Never touched the timing chain. I did take off the cover as it was very very corroded and switched it with mine.

I hope i can get a refund back. It really sucks how far I got only to be set back once again

..

I did retime it today incase the timing was off and redid the leak down test only to have it fail it with flying colors. Could it be that I'm missing something? It's very confusing honestly.

It's very frustrating to do everything perfect only to end up here. I'm not sure where to go on from this point with this build.

Here's a quick time lapse of what I did today. Phone died when I took the chain off and retimed it.

jmroy6 · 04-12-2018, 12:43 PM

id recheck timing for bank 1, maybe its off a tooth or two? Otherwise you have bent valves/bad rings.

this is so disappointing to see, keep us updated on what you find!

Quote:

Originally Posted by husam2012

Never touched the timing chain. I did take off the cover as it was very very corroded and switched it with mine.

I hope i can get a refund back. It really sucks how far I got only to be set back once again

..

I did retime it today incase the timing was off and redid the leak down test only to have it fail it with flying colors. Could it be that I'm missing something? It's very confusing honestly.

It's very frustrating to do everything perfect only to end up here. I'm not sure where to go on from this point with this build.

Here's a quick time lapse of what I did today. Phone died when I took the chain off and retimed it.

husam2012 · 04-14-2018, 06:08 PM

So I learned a new thing yesterday!

Engines that sit for a while get their rings stuck sometimes and just running and revving the damn thing makes it fix itself sometimes.

After spending 8 hours taking the cover and oil pan off and retiming the engine only to have 80% leakdown still, I almost gave up and called a local junkyard to deliver a new engine to me. At the last minute I decided to put the cover back on and just start revving. 5 minutes later I redid the leakdown and compression and every single cylinder has 5% leakdown and 220psi

I hope this is the last of my funny luck with this car.

Sent from my iPhone using Tapatalk

JTM88 · 04-14-2018, 07:09 PM

Nice, isn't that called an Italian tune up or something?

husam2012 · 05-02-2018, 10:13 PM

A happy update so far for you guys!

Inlets are done, I used a bunch of couplers I got from Amazon plus the same piping kit I got last summer! Only thing left is the lower intercooler piping then she's ready to be street tuned.

I have also applied to be an ecutek tuner this week as I have gained a little bit of experience at work. They accepted me but the price is a bit high so I'm hoping to sell a few things this week to pay them.

I used my CNC coolant adapter to route my new lines and then used a GTR thermostatic housing to plumb my overflow tank!

Sent from my iPhone using Tapatalk

husam2012 · 05-03-2018, 10:03 PM

A question for the experienced members on this forum..

I filled up my car with coolant and started it to try and bleed the air out but the fans never turn on!

The car got up to 100C coolant temp and then i turned it off. They don't come on at all but I'm sure they're not faulty as they turn on for a few seconds when flashing a rom..

Any ideas? I've seen one member on here mention the same exact issue but never posted how he fixed it.

hc_416 · 05-03-2018, 11:12 PM

Quote:

Originally Posted by husam2012

A question for the experienced members on this forum..

I filled up my car with coolant and started it to try and bleed the air out but the fans never turn on!

The car got up to 100C coolant temp and then i turned it off. They don't come on at all but I'm sure they're not faulty as they turn on for a few seconds when flashing a rom..

Any ideas? I've seen one member on here mention the same exact issue but never posted how he fixed it.

Try to turn the ac on. It should force the fans on. It worked for my g37s.

rovert · 05-04-2018, 04:17 AM

Not sure exactly how you filled it, but, if you filled it without having the bleed valves open you may have already introduced an air lock into the system.
I dont think its possible to bleed it properly after the fact
I would drain & refill.

sirnixalot · 05-04-2018, 10:41 AM

glad to see you in the home stretch

husam2012 · 05-14-2018, 11:00 PM

She's alive and well! I've been street tuning it this past few days and I've learned a lot.

I'm not even close to being good but I've got my tune nailed down on a very conservative timing map at the moment and will keep refining it on the street and finally finish it on the dyno in a few weeks.

I'm estimating I'm around 500whp at the moment and shooting for 600-630 on E85

Things are finally looking up from this point and it's been an addicting drive every single second

Sent from my iPhone using Tapatalk

04-11-2018, 02:19 PM	#511 (permalink)
husam2012 Track Member Join Date: Mar 2015 Location: Michigan Posts: 549 Drives: 370Z Nismo Rep Power: 9469	It seems like my lucky is always bad with this car. Tried to start the engine and it was acting weird. Upon a closer inspection it appears that bank 1 has bent valves or some funny business going on. 220 compression on bank 2 while bank 1 varies between 105-130. Any ideas? I'm going to hope that the timing is off and will retime it tonight but if it's bent valves then it's time for another motor * Sent from my iPhone using Tapatalk __________________ Creator of the GTR TT Conversion Kit, NA Record Holder (401WHP) Ecutek Master Tuner (VQ37, VR30, VR38, B58, S55, S58) BTWTuning

04-11-2018, 02:53 PM	#513 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,180 Drives: 2011 Nismo GM 6M Rep Power: 2684437	__________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

04-11-2018, 03:36 PM	#514 (permalink)
sirnixalot Track Member Join Date: May 2017 Location: Cayman Islands Posts: 685 Drives: 2010 370Z Rep Power: 57454	FACK did the motor come with any kind of warranty? __________________ 2010 Sport - LS3 swap loading 2012 Frontier - BTWTuning VK56DE swap

04-11-2018, 04:14 PM	#515 (permalink)
jmroy6 Base Member Join Date: Sep 2015 Location: CT Posts: 179 Drives: Spirited Rep Power: 235	Did you re-time the motor since you bought it? otherwise id get your money back for buying a lemon. __________________ 2012 370z GTM SC

04-14-2018, 06:08 PM	#518 (permalink)
husam2012 Track Member Join Date: Mar 2015 Location: Michigan Posts: 549 Drives: 370Z Nismo Rep Power: 9469	So I learned a new thing yesterday! Engines that sit for a while get their rings stuck sometimes and just running and revving the damn thing makes it fix itself sometimes. After spending 8 hours taking the cover and oil pan off and retiming the engine only to have 80% leakdown still, I almost gave up and called a local junkyard to deliver a new engine to me. At the last minute I decided to put the cover back on and just start revving. 5 minutes later I redid the leakdown and compression and every single cylinder has 5% leakdown and 220psi I hope this is the last of my funny luck with this car. Sent from my iPhone using Tapatalk Hotrodz, Jayhovah, EliteXpress and 7 others like this. __________________ Creator of the GTR TT Conversion Kit, NA Record Holder (401WHP) Ecutek Master Tuner (VQ37, VR30, VR38, B58, S55, S58) BTWTuning

04-14-2018, 07:09 PM	#519 (permalink)
JTM88 Enthusiast Member Join Date: Oct 2016 Location: Houston, TX Posts: 276 Drives: 2012 370Z Rep Power: 14	Nice, isn't that called an Italian tune up or something? husam2012 and ZontheRocks like this. __________________ 2012 Base Gun Metallic MT6 -CNT Racing CBE-Swift Sport Springs-Sport Akebono BBK-Z1 Motorsports Intakes-König Oversteer Wheels-1320 Resonated Test Pipes -RJM Rev 2.1 Clutch Pedal-

05-02-2018, 10:13 PM	#520 (permalink)
husam2012 Track Member Join Date: Mar 2015 Location: Michigan Posts: 549 Drives: 370Z Nismo Rep Power: 9469	A happy update so far for you guys! Inlets are done, I used a bunch of couplers I got from Amazon plus the same piping kit I got last summer! Only thing left is the lower intercooler piping then she's ready to be street tuned. I have also applied to be an ecutek tuner this week as I have gained a little bit of experience at work. They accepted me but the price is a bit high so I'm hoping to sell a few things this week to pay them. I used my CNC coolant adapter to route my new lines and then used a GTR thermostatic housing to plumb my overflow tank! Sent from my iPhone using Tapatalk scratchdvinyl, JARblue, Rusty and 7 others like this. __________________ Creator of the GTR TT Conversion Kit, NA Record Holder (401WHP) Ecutek Master Tuner (VQ37, VR30, VR38, B58, S55, S58) BTWTuning

05-03-2018, 10:03 PM	#521 (permalink)
husam2012 Track Member Join Date: Mar 2015 Location: Michigan Posts: 549 Drives: 370Z Nismo Rep Power: 9469	A question for the experienced members on this forum.. I filled up my car with coolant and started it to try and bleed the air out but the fans never turn on! The car got up to 100C coolant temp and then i turned it off. They don't come on at all but I'm sure they're not faulty as they turn on for a few seconds when flashing a rom.. Any ideas? I've seen one member on here mention the same exact issue but never posted how he fixed it. __________________ Creator of the GTR TT Conversion Kit, NA Record Holder (401WHP) Ecutek Master Tuner (VQ37, VR30, VR38, B58, S55, S58) BTWTuning

05-04-2018, 04:17 AM	#523 (permalink)
rovert Base Member Join Date: Nov 2015 Location: Australia Posts: 64 Drives: 08 Skyline 370GT Rep Power: 10	Not sure exactly how you filled it, but, if you filled it without having the bleed valves open you may have already introduced an air lock into the system. I dont think its possible to bleed it properly after the fact I would drain & refill. husam2012 likes this. __________________ 08 Skyline 370GT SP Coupe 5AT: Diy TT

05-04-2018, 10:41 AM	#524 (permalink)
sirnixalot Track Member Join Date: May 2017 Location: Cayman Islands Posts: 685 Drives: 2010 370Z Rep Power: 57454	glad to see you in the home stretch husam2012 likes this. __________________ 2010 Sport - LS3 swap loading 2012 Frontier - BTWTuning VK56DE swap

05-14-2018, 11:00 PM	#525 (permalink)
husam2012 Track Member Join Date: Mar 2015 Location: Michigan Posts: 549 Drives: 370Z Nismo Rep Power: 9469	She's alive and well! I've been street tuning it this past few days and I've learned a lot. I'm not even close to being good but I've got my tune nailed down on a very conservative timing map at the moment and will keep refining it on the street and finally finish it on the dyno in a few weeks. I'm estimating I'm around 500whp at the moment and shooting for 600-630 on E85 Things are finally looking up from this point and it's been an addicting drive every single second Sent from my iPhone using Tapatalk scratchdvinyl, JARblue, elperuano and 14 others like this. __________________ Creator of the GTR TT Conversion Kit, NA Record Holder (401WHP) Ecutek Master Tuner (VQ37, VR30, VR38, B58, S55, S58) BTWTuning

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