Forced Induction motors that have died

jwick · 05-22-2014, 02:00 PM

Quote:

Originally Posted by FPenvy

soooo i thought the title said F.I. blown motor thread?

It is but shhhhhh...let a sleeping dog lie

turbospec · 07-19-2018, 04:35 PM

2011 with 38k miles on that engine
7psi 429
11psi 546

overboosted to 15.3 psi
had a tick after that. drove it home.
My guess is snapped a ringland, maybe bend a valve

Fast as **** though, and smoked the c7 z06.

MoulaZ · 07-20-2018, 03:52 AM

Quote:

Originally Posted by turbospec

2011 with 38k miles on that engine
7psi 429
11psi 546

overboosted to 15.3 psi
had a tick after that. drove it home.
My guess is snapped a ringland, maybe bend a valve

Fast as **** though, and smoked the c7 z06.

Got some sort of mod list? Basics like FI kit, Injectors, Fuel Lines, Fuel Pump, Engine stock?

Plasmite · 05-22-2014, 11:57 AM

Repped and subbed. Excellent idea for a thread. OP please upkeep this thread, should be stickied as well.

Lets all keep bashing out of here. Straight facts are what are most useful

Zbrah · 05-22-2014, 12:24 PM

May I suggest including links to the original build thread and ending results.

Great idea to consolidate all information in one place like the exhaust thread.

VSS370z · 05-22-2014, 12:33 PM

Sub'd

1slow370 · 05-22-2014, 03:08 PM

Just posting it up to skew the statistics, I bet for every blown motor from boost there is another one that nissan just F'd up. Just saying its a good idea for a thread, nice to get it out there just that we need to take it with a grain of salt. I'm the only reply too so problems lol?

Mr.Squeeze · 05-22-2014, 03:12 PM

2 pages already and not a single reply from a person that blew there motor.

Well here's mine from when I had a Stillen Supercharger kit on my car

3900 Miles on the car 2010
465 WHP
360tq

11 PSI car ran fine tell one day I was racing and it started smoking it continued to get worse over the course of 2 weeks. Once I got the motor out and took it to my machinist after it was torn down it was confirmed cylinder number 2 piston ring let go.

Plasmite · 05-22-2014, 03:33 PM

Quote:

Originally Posted by Mr.Squeeze

2 pages already and not a single reply from a person that blew there motor.

Well here's mine from when I had a Stillen Supercharger kit on my car

3900 Miles on the car 2010
465 WHP
360tq

11 PSI car ran fine tell one day I was racing and it started smoking it continued to get worse over the course of 2 weeks. Once I got the motor out and took it to my machinist after it was torn down it was confirmed cylinder number 2 piston ring let go.

I remember reading somewhere else that #2 ring let go as well....

1slow370 · 05-22-2014, 03:42 PM

sounds like a ring gap issue

Mr.Squeeze · 05-22-2014, 04:32 PM

Quote:

Originally Posted by 1slow370

sounds like a ring gap issue

I doubt it I am not the only Stillen kit that let go I know of 4 motors that had the same issue when pushing the kit hard.

1slow370 · 05-22-2014, 04:43 PM

Quote:

Originally Posted by Mr.Squeeze

I doubt it I am not the only Stillen kit that let go I know of 4 motors that had the same issue when pushing the kit hard.

No blowing a second ring sounds like the boost was getting trapped in the rings which leads to fluttering and cracking ring lands, that or that wasn't an issue and the shiz just let go, who knows?

Mr.Squeeze · 05-22-2014, 06:42 PM

Quote:

Originally Posted by 1slow370

No blowing a second ring sounds like the boost was getting trapped in the rings which leads to fluttering and cracking ring lands, that or that wasn't an issue and the shiz just let go, who knows?

In my honest opinion I think my motor let go from being pushed to hard on a kit that wasn't designed to be pushed. I think the car ran hot , one major design flaw in the kit is MAF location. The stock MAF's have to be relocated with this kit to the front bumper and uprev uses IAT's for ignition timing. Also the heat exchanger is very small I really don't think it cools enough. Like I said before I know a few that blew one of them is on this forum name is Nissan370. He was pushing his Stillen kit hard as well and it now he has a built motor like my self.

Quote:

Originally Posted by mikey1600

was this on the stillen tune or custom tune? I'm probably heading down the stillen path and would like to avoid this if at all possible haha, I'll be getting mine custom tuned from the get-go

Custom tune I was the first to switch to cog pulleys and upgrade the impeller in the supercharger.

jwick · 05-22-2014, 06:45 PM

Quote:

Originally Posted by Mr.Squeeze

In my honest opinion I think my motor let go from being pushed to hard on a kit that wasn't designed to be pushed. I think the car ran hot one major design flaw in the kit is MAF location. The stock MAF's have to be relocated with this kit to the front bumper and uprev uses IAT's for ignition timing.

This

future370zzz · 05-23-2014, 05:12 PM

Just picked up the Z with Stillen upgraded impeller and 9PSI pulley. Added a temperature sensor just before the Stillen manifold. I'm seeing about a 20-25 degree difference from the IAT MAF sensor to the manifold. I.e. 100 degrees at the MAF sensor and 125 degrees just before it enters the Stillen manifold.

Should have really tapped into the Stillen manifold right before it enters the engine since there is a cooling core within the manifold that should bring the temps back down, just don't know by how much and if its close to the MAF readings. That is the next step.

Mr.Squeeze, what AFR and Octane were you running?

EDIT: Just looked at AIT = 95 degrees and temperature just before entering manifold cooler was at 145 degrees. Ambient temp was about 75 only. Holy crap, can't wait for summer time. ughhh Again, I wonder what temp it is after the manifold cooler.hmmm My mechanic/tuner/z guru is wondering that too.hahahah

07-19-2018, 04:35 PM	#2 (permalink)
turbospec Base Member Join Date: Jun 2016 Location: Tacoma, WA Posts: 21 Drives: 2011 Nismo 370z Rep Power: 9	2011 with 38k miles on that engine 7psi 429 11psi 546 overboosted to 15.3 psi had a tick after that. drove it home. My guess is snapped a ringland, maybe bend a valve Fast as **** though, and smoked the c7 z06. jwick likes this.

05-22-2014, 11:57 AM	#4 (permalink)
Plasmite Enthusiast Member Join Date: Aug 2012 Location: Canada Posts: 259 Drives: '12 M6 Panty Peeler Rep Power: 13	Repped and subbed. Excellent idea for a thread. OP please upkeep this thread, should be stickied as well. Lets all keep bashing out of here. Straight facts are what are most useful __________________ WISHLIST

05-22-2014, 03:08 PM	#7 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	Just posting it up to skew the statistics, I bet for every blown motor from boost there is another one that nissan just F'd up. Just saying its a good idea for a thread, nice to get it out there just that we need to take it with a grain of salt. I'm the only reply too so problems lol? Plasmite likes this. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

05-22-2014, 03:12 PM	#8 (permalink)
Mr.Squeeze A True Z Fanatic Join Date: Aug 2010 Location: Keystone state Posts: 1,209 Drives: 2010 370z Rep Power: 20153	2 pages already and not a single reply from a person that blew there motor. Well here's mine from when I had a Stillen Supercharger kit on my car 3900 Miles on the car 2010 465 WHP 360tq 11 PSI car ran fine tell one day I was racing and it started smoking it continued to get worse over the course of 2 weeks. Once I got the motor out and took it to my machinist after it was torn down it was confirmed cylinder number 2 piston ring let go. DEpointfive0, Wonka2581 and Kaminari Kuro like this. __________________ Driven Motorsports Single Turbo 7675 T4 1.32 A/R 995WHP 780TQ

05-22-2014, 03:42 PM	#10 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7251	sounds like a ring gap issue __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

05-22-2014, 12:24 PM	#5 (permalink)
Zbrah A True Z Fanatic Join Date: May 2013 Location: The370Z.com Posts: 4,956 Drives: 370Z Rep Power: 5452	May I suggest including links to the original build thread and ending results. Great idea to consolidate all information in one place like the exhaust thread.

05-22-2014, 12:33 PM	#6 (permalink)
VSS370z Enthusiast Member Join Date: Apr 2012 Location: Puerto Rico Posts: 380 Drives: 09 Nissan 370z CY M6 Rep Power: 13	Sub'd

05-23-2014, 05:12 PM	#15 (permalink)
future370zzz Track Member Join Date: Dec 2011 Location: Bay Area Posts: 555 Drives: 10 Nissan 370z Rep Power: 15	Just picked up the Z with Stillen upgraded impeller and 9PSI pulley. Added a temperature sensor just before the Stillen manifold. I'm seeing about a 20-25 degree difference from the IAT MAF sensor to the manifold. I.e. 100 degrees at the MAF sensor and 125 degrees just before it enters the Stillen manifold. Should have really tapped into the Stillen manifold right before it enters the engine since there is a cooling core within the manifold that should bring the temps back down, just don't know by how much and if its close to the MAF readings. That is the next step. Mr.Squeeze, what AFR and Octane were you running? EDIT: Just looked at AIT = 95 degrees and temperature just before entering manifold cooler was at 145 degrees. Ambient temp was about 75 only. Holy crap, can't wait for summer time. ughhh Again, I wonder what temp it is after the manifold cooler.hmmm My mechanic/tuner/z guru is wondering that too.hahahah ChaseZ likes this. Last edited by future370zzz; 05-23-2014 at 07:51 PM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Forced Induction for Noobs...	Slidefox	Forced Induction	48	06-15-2013 12:32 AM
Forced induction	stiso	Northern California Region	8	11-28-2011 12:03 PM
Help don't want forced induction!!!!!	Mjthind	Engine & Drivetrain	64	05-04-2011 01:00 PM
Forced Induction oil temperatures	xbigb4ller69z	Forced Induction	46	08-18-2010 08:45 PM
Forced induction	Seth G	Forced Induction	13	04-09-2010 12:36 AM