Well My FI Days Have Come To An End.....
#121
04-08-2008, 09:39 AM
The stock rods are weak. Forced induction increases stress and metal fatigue is cumulative. End result is failure - question is how long till failure. A good tune can minimize stress and prolong rod life. (And yes, on the other hand a poor tune can easily destroy even a built block). So yes, a good tune is necessary but not sufficient in and of itself to prevent a blown motor on VQ35DE motors. The HR is a different story. There's been enough data to recognize that FI on a stock VQ35DE is a gamble - any way you look at it. Build the block for the DE or buy a VHR engine if you want to play it safe with FI - otherwise expect and plan for a failure down the road.
Last edited by rcdash; 04-08-2008 at 09:49 AM.
#122
04-08-2008, 12:28 PM
Dam this is like the 20th time I read this thread and I can finally come to some hopefully encouraging words.... Don't let a blown motor change your mind for modding bro. I would say if it breaks build it better and stronger than before. FI is always a subject in my next mod list but when I see stories like this I second the thought with this could be me. It seems that you are to a point where you encoutnered a mishap but it's fixable. I'd say shell out the extra 1k and get a built block and be happy!
#123
04-08-2008, 12:38 PM
well I just found out today from my dealer that my car is still under powertrain warranty...I am taking it in to have them look at it either this evening or tomorrow to diagnosed what occured...my service advisor said that it was a rod that blew you would of heard knocking first...I said none of that occured...he said that it sounds like I may of had an Oil Pump Failure..that caused the engine to blow.
#125
04-08-2008, 01:04 PM
Originally Posted by g35man04
well I just found out today from my dealer that my car is still under powertrain warranty...I am taking it in to have them look at it either this evening or tomorrow to diagnosed what occured...my service advisor said that it was a rod that blew you would of heard knocking first...I said none of that occured...he said that it sounds like I may of had an Oil Pump Failure..that caused the engine to blow.
#126
04-08-2008, 01:05 PM
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Originally Posted by g35man04
well I just found out today from my dealer that my car is still under powertrain warranty...I am taking it in to have them look at it either this evening or tomorrow to diagnosed what occured...my service advisor said that it was a rod that blew you would of heard knocking first...I said none of that occured...he said that it sounds like I may of had an Oil Pump Failure..that caused the engine to blow.
Originally Posted by rcdash
The stock rods are weak. Forced induction increases stress and metal fatigue is cumulative. End result is failure - question is how long till failure. A good tune can minimize stress and prolong rod life. (And yes, on the other hand a poor tune can easily destroy even a built block). So yes, a good tune is necessary but not sufficient in and of itself to prevent a blown motor on VQ35DE motors. The HR is a different story. There's been enough data to recognize that FI on a stock VQ35DE is a gamble - any way you look at it. Build the block for the DE or buy a VHR engine if you want to play it safe with FI - otherwise expect and plan for a failure down the road.
#127
04-08-2008, 01:41 PM
Originally Posted by FI'ed G
/\ Listen to this. what if the pump was ok and it just happen the rod was at the breaking point and just gave up at that moment, will the dealer still cover your car? I wouldn't take the risk coz if they said the pump is good then they will charge you 10X more to get a new block + labor. This is what we have to deal with, once you go FI then you forget about warranty!!!
#128
04-08-2008, 01:42 PM
Originally Posted by Jeff92se
I hope you took all the FI stuff off first? Or is that dealer mod friendly? Either way, best of luck. If you can get the engine replaced that would be a sweet deal.
#129
04-08-2008, 01:49 PM
Originally Posted by superchargedg
I hate to be the one to say as usual you are wrong(if anybody wants to see proof check my350z).Back in the early days of fi the ati procharger and the greddy twins blew up just about everything......all because they did not have any timing control.That was the only reason i went with the stillen s/c back in mid 2003 as it was the safest fi out.
This problem seems more like a tuning issue as the rpms where it looks like the tuning stopped is the culprit.
The vortechs problem was with a bad batch of bearings that vortech got from there supplier........and it did not cause engine failure.Vortech has been very good with replaceing all the defective units or rebuilding them.
Lawdyu as has been said on tons of threads on my350z please try and know of what you are talking about because there are a lot of us that are on both forums.
I will not debate with you further because i and many others know of some of your bs.
This problem seems more like a tuning issue as the rpms where it looks like the tuning stopped is the culprit.
The vortechs problem was with a bad batch of bearings that vortech got from there supplier........and it did not cause engine failure.Vortech has been very good with replaceing all the defective units or rebuilding them.
Lawdyu as has been said on tons of threads on my350z please try and know of what you are talking about because there are a lot of us that are on both forums.
I will not debate with you further because i and many others know of some of your bs.
PM me
#131
04-08-2008, 05:28 PM
#132
04-08-2008, 05:35 PM
Thinking about it, not selling because g35man04's problem, I want 500-600whp!!! I'm not worried about my car, don't want to sound stuck up but I went to GTM, they wouldn't release the car if it's not 100% perfect, no problems, I'm very confident. If i build my engine with the procharger, IMO I don't think I can hit 500whp +.
#133
04-08-2008, 05:35 PM
Thats why i said PM me, but yeah sorry..moving on..........
#135
04-08-2008, 07:04 PM
