Nissan 370Z Forum

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-   -   Blown VVEL !!! (http://www.the370z.com/engine-drivetrain/59789-blown-vvel.html)

red6spd 08-28-2012 09:32 AM

Why did the engine spin up to 8k?

Coon-azz 08-28-2012 09:41 AM

Really sorry to hear this. I've been watching the build and was hopeful. Anyway, done that myself years ago; blew piston #2 threw the CF Hood. the NOS bottle rolled on me and the motor ran lean...very expensive mistake on my part. Wish I had some spare parts to send your way, but I don't. Let me know how I could help other than sending you a lot of $. :tup:

theDreamer 08-28-2012 09:42 AM

Quote:

Originally Posted by red6spd (Post 1890161)
Why did the engine spin up to 8k?

Tuning

red6spd 08-28-2012 09:44 AM

Quote:

Originally Posted by theDreamer (Post 1890182)
Tuning


So he change the RPM by +500? Thats just stupid at least on a stock engine. Was it a stock engine?

ChrisSlicks 08-28-2012 09:59 AM

Very sorry about the failure. Good time to start the build though! It's been on my mind too since my Time Attack competition got a recent boost in power.

Makes me very glad I installed the AM Performance baffled oil pan last year. Does anyone else make a suitable oil pan or are you going to convert to dry sump?

indyn 08-28-2012 10:03 AM

Quote:

Originally Posted by Megan370z (Post 1889467)
no they denied any warranty on the engine ... part of my fault and the new build Nissan dealership where I live.
they went to fast with picture and getting in contact with Nissan Canada.

it wasnt like last year with a different dealership , They told me that I should reinstall everything stock around the engine before they take picture...
I got the 7AT replaced there
but I couldnt tow the car at that one and my only option was the new one near of my home.

you should've tried the same dealership man..atleast they knew the history of the car.

It seems more like oil starvation than anything else. Were the oil levels ok, before and after track use?

HKYStormFront 08-28-2012 10:05 AM

Quote:

Originally Posted by red6spd (Post 1890187)
So he change the RPM by +500? Thats just stupid at least on a stock engine. Was it a stock engine?

stock engines can take close to 8k rpm occasionally without problems. 7500rpm is where nissan felt safe warrantying the engine for 60k miles

SPOHN 08-28-2012 10:18 AM

Very interested in HR head swap. How much is involved besides different wiring?

Megan370z 08-28-2012 11:03 AM

Quote:

Originally Posted by Coon-azz (Post 1890179)
Let me know how I could help other than sending you a lot of $. :tup:

You could send me those nice JWT C10 intake & C9 exhaust cams !!
that way you arent sending me any money !!! :tup:

Quote:

Originally Posted by ChrisSlicks (Post 1890224)
Makes me very glad I installed the AM Performance baffled oil pan last year. Does anyone else make a suitable oil pan or are you going to convert to dry sump?

I do not have the funds right now for a dry sump !!!
I wish I could do that but no im gonna look to make something up in there !
I have a few good ideas that should do the trick.
But a spacer will probably be added to the mix


Quote:

Originally Posted by indyn (Post 1890236)
you should've tried the same dealership man..atleast they knew the history of the car.

It seems more like oil starvation than anything else. Were the oil levels ok, before and after track use?

due to some restriction and last minute problem . that was not possible .
trust me I wanted to tow the car there !!!!

Quote:

Originally Posted by HKYStormFront (Post 1890241)
stock engines can take close to 8k rpm occasionally without problems. 7500rpm is where nissan felt safe warrantying the engine for 60k miles

yup I saw so many guys getting their rev limit to 8000 rpm ...
my reason to have it there wasnt to look cool or anything but only to stay in gear as much as I can which was perfect with the gear that sit in my diff !


Quote:

Originally Posted by SPOHN (Post 1890276)
Very interested in HR head swap. How much is involved besides different wiring?

I havent fully figured it out yet ...
but from my research it seem I have everything to make it to work ..
we will see , I also tried to get in contact with a shop who did a few of type or swap ..Im waiting for their answer.

HKYStormFront 08-28-2012 11:47 AM

Quote:

Originally Posted by Megan370z (Post 1890389)
yup I saw so many guys getting their rev limit to 8000 rpm ...
my reason to have it there wasnt to look cool or anything but only to stay in gear as much as I can which was perfect with the gear that sit in my diff !

yea i think with the VVEL heads they set it at 7800rpm. you can PM bkleeman if you have any questions and he might answer. BJ, Dwnshft, might also know since he races in the conti-challenge team. and yea, having those extra revs can really save you a 2-3 or 3-4 shift in a straight going into a corner which helps with laps times, especially if you are running the 4:10 gear. little different for you since you are auto though

red6spd 08-28-2012 11:53 AM

Quote:

Originally Posted by HKYStormFront (Post 1890241)
stock engines can take close to 8k rpm occasionally without problems. 7500rpm is where nissan felt safe warrantying the engine for 60k miles



But thats silly to say. A stock Z engine can probably handle 20 pounds of boost for a while then Boom like what happen here. Its cool people are trying new things but this seemed silly. IDK.

HKYStormFront 08-28-2012 11:58 AM

Quote:

Originally Posted by red6spd (Post 1890499)
But thats silly to say. A stock Z engine can probably handle 20 pounds of boost for a while then Boom like what happen here. Its cool people are trying new things but this seemed silly. IDK.

it's not silly at all dude, lots of people raise their redlines a little over stock when tuning. if it's tuned right, it should work fine. it definitely looks like oil starvation played a role in this problem, not completely the higher rpms (though that was part of it)

W.O.W. 370Z 08-28-2012 12:00 PM

Your sig is asking for donations?:roflpuke2:

Megan370z 08-28-2012 12:25 PM

Quote:

Originally Posted by W.O.W. 370Z (Post 1890516)
Your sig is asking for donations?:roflpuke2:

why not ? hehe
I just blew the engine and yes this is part of the game in racing .
but if someone want to donate im all for it !

there is a few company that (could be/are) interessted for some sponsorship.
but nothing written down yet.

DR_ 08-28-2012 12:29 PM

Sorry to hear about this as I really liked where you were going with your build. This combined with all the other track issues (high oil temps, high diff temps, high brake temps, csc problems) really makes me nervous about tracking this car.


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