damn thats all I got to say , damn.

 

I would have definitely tried another Nissan dealer before I threw down 4 g's out of my own pocket. If they can't find a reason then getting a new one under warranty is fairly easy.

 

Here is what you should have dropped 4g's on....


http://www.jazzproparts.com/ProductD...th+RB25+Tranny

 

ok i am going to say yes, knowing this motor really well, there is nooooooooooooooooooo way one bolt could possibly get into any more than one piston, it would have to bounce back up throught the valve and go all the way up the lower intake manifold and fall down into each one....


not happening...

now, what did happen is, me and your girlfriend were hangin out, i told her that i bet she couldnt put my nitrous on your car and hit the rev limiter 18 times without bending any valves....

i won...

 

You do realize it is physically impossible to have ZERO compression right?There would have to be no piston left..

 

yeah... damn... had i known about that i definately would have done it, how much power does that thing put out?... lol anyone know if z1 takes returns on engines

 

or you could have gone the SR20DET route

seriously, what bothers me is that no one can tell you where the problem originated, or went wrong. That is absurd. I've been beating the **** out of my engine and it's holding on flawlessly. I hit the rev limiter so many times I can't even remember. I did a used oil analysis couple months ago and the engine barely has any wear...

Unless you had a valet or mechanic abuse the car without you knowing, 6000 rpm is no abuse at all.


Those CEL codes and crank seal might be a clue?

 

just a little side note.... i just noticed this thread.... its physically IMPOSSIBLE to over rev the 5 at.... SOOOOOOOOOOOOOO them saying you over reved the car is complete bullshiet. i mean... its hard enough for me to get the car to go into 6900. (can be done in an automatic with some practice.) but thats not high enough to do any damage to the engine... there are more than enough people that have the ecu reflash that raises the rev limiter to 7100 or 7200. i seriously you got screwed out of alot of money... whatever happened it should be covered under warranty. even if your bouncing off the rev limiter i mean you would need to do that for a long time for it to do damage. and if you were gonna spend that kind of money anyways you should have just bought a built engine from AAM, they have some for like 3500 i believe. i believe you went the wrong route... sigh tsk tsk.

 

Had I gone the built/FI route I'm sure it would have ended up being about $10k dollars or close to it, of which I do not have right now, since I'm at school and hardly working. This summer though, when I go back to selling real estate full time, that kind of money would not be a problem. However, my car broke down now, and not in July or August when I would have the money. So yeah, there could have been a better option as far as power goes, but as far as $$ goes, there wasn't much of a better option, and since I do not even really have the money for this now, after spending close to $3k on the car just for mods, I had to ask my dad to cover the bill until I can pay him back, which I hate, but its better than paying interest on a credit card, so I could not ask him to front me 10k to do a complete turbo or supercharger upgrade, when he doesn't think you should even mod your car at all.

The p000011 and p000021 codes i thought had to do with the coolant system? I was under the impression where these were important, but were not going to harm the workings or internals of the car?

Yes, that thought has crossed my mind, that the pulley, since it was not torqued down enough and spinning unevenly, might have done it, but no one else has mentioned it, so I don't know for sure. I think since there is no other culprit, and I know that the car was not revved out of control, and it has been confirmed by both nissan and Todd, my mechanic/owner/runs the shop, found that the engine jumped time, the incorrect torque on the pulley could have caused it. since i have no mechanical evidence to support it, i'm sure someone will say that that is impossible too

 

From the sound of it the OP knows a bit more about what has happened and probably feel responsible for the engine damage.. But doesn't want to admit it for fear of being made fun of..

 

I do feel responsible, what would have caused the engine to jump time? The vq is one of the best engines out there, say several reports and people on this site, so i see it highly unlikely that it would just bend its own valves for no reason.

As far as knowing more about what happenned and not posting it, that is completely false. I have not tracked my car, and i do not abuse it nearly as much as many people on here do. Since I was not with the car when it happenned I do not know exactely what happenned.

As far as making fun of me for screwing up the engine, you can if you want because it probably was something I did, but no one can give me a definitive answer, and spending more than $1k just to find an answer that will most likely say "yes it was you pulley" or "yes you had to have pushed it too hard" is not something i am interested in doing. If a shop that is a trusted friend and unbiased would even still not be able to give me a definive answer, what do you think another nissan shop would do? charge me even more money, and still tell me that I did it. Then I would get a lawyer, and end up paying him $1k, and then court fees, and in the end, still spend about $3k, but have to wait even longer to get my car.

So as far as feeling responsible, yes I do feel responsible. As far as not telling everything, that is false. Everything I know has been shared over these pages.

 

I'm in the same boat my car is 1 month old and has a broke crank key and nissan does not want to look at it so i've got a shop fixin it.

 

Not to mention I'm sure that after being sued the Nissan shop would be extremely happy to work on my car and fix it right.


damn man, that is messed up. Have you done any mods to it to make them not want to look at it?

 

what I dont understand is how your ignoring what I wrote. the simple fact that he siad over reving killed your car. ITS IMPOSSIBLE TO OVER REV THE AUTOMATIC. so its not possible for that to be what caused the damage.

 

I had exhaust on and i put my factory upper plenum back on and they said that it looked like it was tampered with so they dont want to warranto it.

 

I appologize then.

 

Oh no i didnt ignore it, just because i didnt quote you doesnt mean i haven't thought about it. But that is just one more impossibility in the whole situation. Which leads me to believe the pulley being installed incorrectly and being directly linked to the crank, may have caused the valves to go haywire. but i don't know engine internals that well, so like many other possibilities of what could have caused it, it probably can't happen either, which i jokingly said earlier. But I do appreciate your helping and contribution.

He didn't positively say that over-revving killed the car, he said that is one possibility to make the engine jump time. its happenned before, maybe not in a Z.

So since thats out, is the pulley something that could have caused it, if after 7 months of use being incorrectly torqued down (i had a mechanic install it, he is an alumni of my fraternity so he only charged me $35) because the instructions I gave him were incorrect from the manufacturer, and not corrected until about a month later, and not taking the car back in to have the pulley torqued down correctly, and eventually wearing out the main crank seal and having it drip a little bit of oil... could that have caused it?

 

No hard feelins

 

what is the torque on the crank pulley?

 

hmmmmmz i think you should have taken the car back to nissan with the mechanic saying that it couldnt possibly be a nut. at which point they would probably try to come up with another reason or possibly give you a new engine. it just pains me to watch a member buy a stock motor after thier original blew... just seems like so many ways you could have gotten a free engine through warranty