blown rod bearing

gleonard · 11-19-2013, 08:39 PM

so I spun a bearing and took it back to the dealer. Luckily it's still under the factory power train warranty. However, the service tech is talking about a short block replacement. I'm no genius on engines, but when you burn a bearing and get metal debris in the oil doesn't it go throughout the entire engine and get into every moving part? Any advice on how to handle this?

synolimit · 11-19-2013, 08:46 PM

Wouldn't the oil filters job not allow that to happen?

BGTV8 · 11-19-2013, 09:03 PM

Not necessarily .......... but it is usually a safe bet.

It all depends upon what caused the spun main bearing - which is almost universally a consequence of low oil pressure and given the requirement for oil-pressure based control for the magic-camshaft system, I'd be suspicious about the potential for cam-based damage as well.

What I'd be interested in is the cause of low oil-pressure as that might indicate damage elsewhere in the engine, and if that is a cylinder head, a short engine assembly will not cut the mustard - better arguing for a long-engine assembly.

Any idea's on source of low oil-pressure ??

gleonard · 11-19-2013, 09:09 PM

Quote:

Originally Posted by BGTV8

Not necessarily .......... but it is usually a safe bet.

It all depends upon what caused the spun main bearing - which is almost universally a consequence of low oil pressure and given the requirement for oil-pressure based control for the magic-camshaft system, I'd be suspicious about the potential for cam-based damage as well.

What I'd be interested in is the cause of low oil-pressure as that might indicate damage elsewhere in the engine, and if that is a cylinder head, a short engine assembly will not cut the mustard - better arguing for a long-engine assembly.

Any idea's on source of low oil-pressure ??

I asked what would have caused the spun bearing but the service adviser didn't give me any specific cause. I didn't have any dummy lights come on before I heard the knocking, and It didn't start with any great fanfare. Just pulled out of a parking lot and heard a funny rattling and knocking sound.

I don't drive it really hard other than the occasional freeway launch.

I've had all my regular maintenance (oil changes etc.) done at this dealer.

ANMVQ · 11-20-2013, 09:06 AM

Sorry man , glad it's covered. They replaced my whole motor when mine went , was yours cyl 3? Like mine

G37sHKS · 11-20-2013, 09:15 AM

That's weird. Is your car modified or tuned?

Verda7junior · 11-20-2013, 10:24 PM

Quote:

Originally Posted by ANMVQ

Sorry man , glad it's covered. They replaced my whole motor when mine went , was yours cyl 3? Like mine

How common are engine failures in these cars? And how many miles do they last? Just wondering if I should leave my car as is and just beat the hell out of it and enjoy the warranty, or keep modding and worry about if it will still be covered under warranty or not?

Joepro · 11-20-2013, 10:26 PM

Beat it.

phunk · 11-20-2013, 11:40 PM

Is it possible that he said short block replacement but really meant replace the entire engine? Or was it very clear that it was going to be short block only?

I have always been under the impression that Nissan will not open up a VQ, and that they will replace the entire engine. I would be surprised to hear that they find it more cost effective to pay the labor on a rebuild rather than just giving you new cylinder heads and timing covers with an engine off the assembly line. Especially considering the possibility that the tech will screw up and have to do it again.

Rusty · 11-20-2013, 11:50 PM

There have been a few people on here who had short blocks replaced, and not long blocks. Bet it depends on what the tech has to say and then what the dealership tells the mothercompany.

phunk · 11-20-2013, 11:53 PM

that would suck. i would not be happy about having a dealer tech assembled engine.

Wonka2581 · 11-21-2013, 12:02 AM

I would demand a new motor not a rebuid!

Rusty · 11-21-2013, 12:02 AM

Yea, most of them now are parts replacers, not mechanics.

gleonard · 11-21-2013, 12:58 AM

service tech says Nissan only wants to do short block replacement. I argued with him for a few minutes and then called Nissan consumer affairs to protest further. I'm supposed to get a call from a consumer affairs specialist tomorrow. We'll see what happens.

only mod is cat back exhaust.

cylinder one failed

synolimit · 11-21-2013, 01:12 AM

Just curious, whats your dealer say the oil change time frame is and they used their oil?

11-19-2013, 08:39 PM	#1 (permalink)
gleonard Base Member Join Date: Jul 2009 Location: Los Angeles Posts: 196 Drives: 370z Touring/Spt 6sp Rep Power: 15	blown rod bearing so I spun a bearing and took it back to the dealer. Luckily it's still under the factory power train warranty. However, the service tech is talking about a short block replacement. I'm no genius on engines, but when you burn a bearing and get metal debris in the oil doesn't it go throughout the entire engine and get into every moving part? Any advice on how to handle this? __________________

11-19-2013, 08:46 PM	#2 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3389	Wouldn't the oil filters job not allow that to happen? __________________ 13 370z-

11-20-2013, 09:06 AM	#5 (permalink)
ANMVQ A True Z Fanatic Join Date: Mar 2011 Location: Framingham MA Posts: 2,732 Drives: 2014 Q50 AWD Rep Power: 19	Sorry man , glad it's covered. They replaced my whole motor when mine went , was yours cyl 3? Like mine __________________ 14 Q50 AWD, ARK, ECUTEK (SEB), Takda,

11-20-2013, 09:15 AM	#6 (permalink)
G37sHKS A True Z Fanatic Join Date: Feb 2010 Location: Dubai Posts: 1,183 Drives: 09 G37S Coupe 7AT Rep Power: 20	That's weird. Is your car modified or tuned? __________________ G37 BUILD UNDER CONSTRUCTION

11-20-2013, 10:26 PM	#8 (permalink)
Joepro A True Z Fanatic Join Date: Aug 2012 Location: Athens ohio Posts: 1,213 Drives: Company car Rep Power: 33	Beat it. __________________ Swift\|Koni\|SPC\| FI CBE\|Z1\|Stillen\|Sbend\|Zspeed\|R/T Tuned\|523 whp\|458 tq\|10.5 psi\|SOLD Joepro's Journal\|Joepro's Boosted Performance Build \|Pittsburgh-Western-Pa-Ohio-Wv-Group

11-19-2013, 09:03 PM	#3 (permalink)
BGTV8 A True Z Fanatic Join Date: Dec 2009 Location: 03350 Australia Posts: 1,503 Drives: 09 Nissan 370Z M6 Rep Power: 29907	Not necessarily .......... but it is usually a safe bet. It all depends upon what caused the spun main bearing - which is almost universally a consequence of low oil pressure and given the requirement for oil-pressure based control for the magic-camshaft system, I'd be suspicious about the potential for cam-based damage as well. What I'd be interested in is the cause of low oil-pressure as that might indicate damage elsewhere in the engine, and if that is a cylinder head, a short engine assembly will not cut the mustard - better arguing for a long-engine assembly. Any idea's on source of low oil-pressure ??

11-20-2013, 11:40 PM	#9 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,655 Drives: 370 Rep Power: 944523	Is it possible that he said short block replacement but really meant replace the entire engine? Or was it very clear that it was going to be short block only? I have always been under the impression that Nissan will not open up a VQ, and that they will replace the entire engine. I would be surprised to hear that they find it more cost effective to pay the labor on a rebuild rather than just giving you new cylinder heads and timing covers with an engine off the assembly line. Especially considering the possibility that the tech will screw up and have to do it again. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

11-20-2013, 11:50 PM	#10 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 34,891 Drives: 2011 Nismo GM 6M Rep Power: 2684436	There have been a few people on here who had short blocks replaced, and not long blocks. Bet it depends on what the tech has to say and then what the dealership tells the mothercompany. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

11-20-2013, 11:53 PM	#11 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,655 Drives: 370 Rep Power: 944523	that would suck. i would not be happy about having a dealer tech assembled engine. SPOHN likes this. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

11-21-2013, 12:02 AM	#12 (permalink)
Wonka2581 A True Z Fanatic Join Date: Nov 2012 Location: Chattanooga, TN Posts: 3,083 Drives: MY WIFE CRAZY.... Rep Power: 2611	I would demand a new motor not a rebuid! __________________ "I have nothing to offer but blood, toil, tears and sweat""Winston Churchill"

11-21-2013, 12:02 AM	#13 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 34,891 Drives: 2011 Nismo GM 6M Rep Power: 2684436	Yea, most of them now are parts replacers, not mechanics. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

11-21-2013, 12:58 AM	#14 (permalink)
gleonard Base Member Join Date: Jul 2009 Location: Los Angeles Posts: 196 Drives: 370z Touring/Spt 6sp Rep Power: 15	service tech says Nissan only wants to do short block replacement. I argued with him for a few minutes and then called Nissan consumer affairs to protest further. I'm supposed to get a call from a consumer affairs specialist tomorrow. We'll see what happens. only mod is cat back exhaust. cylinder one failed __________________

11-21-2013, 01:12 AM	#15 (permalink)
synolimit A True Z Fanatic Join Date: May 2013 Location: Columbus, OH Posts: 5,051 Drives: 2013 Silver 370z Rep Power: 3389	Just curious, whats your dealer say the oil change time frame is and they used their oil? __________________ 13 370z-

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