Whoa...is this what the porous block issue is in all cases? The issue never made sense to me...how if the block was truly flawed in casting that it wouldn't drink it's own coolant from day 1. This would explain it...that these plugs (which I never knew existed until now) are substandard and are failing after years and tens of thousands of miles.
Yes, however, I did have infiniti certified (used car) warranty until that ended when I hit 75k (4yr/75k). What sucks, when i decided to take it in, I hit 79k(long commute for work for 2yrs) and I just purchased warranty from Fidelity a few months prior (i know there are better ones, was cheap for what they offered). So, that made me look sus. However, the warranty inspector worked with my service advisor in the past, so was told it was a quick conversation and obviously the issue was not caused from neglect/abuse. I gathered all my receipts of purchasing regular maintenance items that I do myself, parts, etc. all ready to go, but was told no need.
You know, maybe it could. I did a little research and asked some older car buddies and my brother who is a machinist for Boeing and has metal casting experience. It sums up that that it could involve those plugs, the surrounding surfaces where they are pressed in, the quality of them, and/or something with the water jackets having porosity (created during casting and/or later developed due to quality). I watched some videos on engine casting to learn more and doing a little more research. Hopefully this gets solved some day, to know how it started. I just hope this doesn't happen again. I will be doing an oil analysis twice a year now, incase it happens again, can catch it early before it gets worse.
They'll never tell. A good gage will be any reports from 400Z owners, which may take awhile.
You'd think they would x-ray the blocks after they come out of casting to make sure they're good to go. That's a pretty standard practice in say, casting aluminum wheels.
Well, thinking about my industry, when a modern gas turbine engine spits out a fan, compressor, or turbine blade in-service (which is very, very rare these days), due to a process flaw, it may not be the inspection method that's been the root cause, because the detection technology has improved immensely since the modern jet era started in the 60s, - it could easily be the human factor, i.e., inexperienced inspectors, lack of training, etc.
Blocks aren't typically X-rayed. The usual method for identifying cracks is mag particle testing (which doesn't work on aluminum blocks) or penetrating, florescent dyes. Pressure or vacuum testing is also used.
Thanks, added
So even new engines are failing, great. I will be testing before the 12mo/12k mile new engine warranty is up for sure.
From what I can tell, my car got old stock of the original 2016 engines because of the part number,
Would you mind posting your Blackstone analysis? Curious how it compares to mine.
Just - WOW! Really sorry to hear Nick! You deserve better and what a great advocate and continued contributor you could have been for this platform!
Where did you find that? I asked the dealer about info on the new engine when they were installing it, they didn't want to give me any info on the new block. The invoice doesn't state anything of relevance regarding build date to me.
Here you go:Would you mind posting your Blackstone analysis? Curious how it compares to mine.
