Nakamura 350Z engine tear down - BIG FAILURE
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- Опубліковано 8 вер 2024
- I thought it would be fun to do an engine tear down of a failure we had on Drift Week 7 with Naoki Nakamura from N-Style. We gave him a 350Z HR engine car, and it lasted him through two weeks of abuse, but finally gave up and had a huge failure on the trip. We didn't realize how crazy the failure was, I have never seen a failure this bad before from an engine in person, we still don't exactly know what happened lol. He normally drives an SR20DET S13 Silvia, and I have no idea how those engines survive through his abuse, but he did say in one of our previous interviews that he had killed a 100 of them or something crazy.
No damage to piston tops from detonation or bearing damage from low oil pressure, my best guess was a mis shift overrevving to the moon and multiple pistons exploding or dropped a valve.
that makes sense
That whole motor is DEstroyed.
He must have been sHRedding pretty hard 😅
Mark dropping the bolts through the engine reminds me when the ghosts in Casper is eating and it just falls through
I would guarantee that was Nakamura's way to say thanks for the fun
lololol
Hope Mark saved a bucket of those bolts & parts(sensors), since you got 10 of those cars LOL
I'm for one was say. I appreciate the video. Thanks, guys, keep Keep them coming.😊
She is dead dead.
Ain't no coming back from that.
It's like watching you teardown my mother's qx60 engine since it's basically the same one
saw you out shredding in the Z at IAS, looked like you were having a blast! glad it got sorted out
@11:48 buy a engine stand drain pan keeping floor cleaner
A bigger/baffled oil pan would be a good investment for the next engine. 🤙🏻
Oil cooler would be safer incase of off roading mishaps. Still get the extra quart AND better cooling vs being under the car by hot asphalt.
$1k vq35?!? Where the hell you finding that?
that is just how much they cost in Texas. you used to be able to buy whole 350z for that much here before covid lol.
@@LoneStarDrift I live in Tulsa and have been looking. Found one for a decent price in fl
I have never seen a destroyed wrist pin. You outdid yourself.
The multiple piston failure was likely from ONE rod failing. How? When a chunk from that rod/piston bounces around and wedges between another piston and counterweight just above BDC. There's rarely more than a few MM gap, so almost any chunk is enough to stop the piston - which makes the rod crack the piston as it pulls the wrist pin THROUGH that piston. Then you have more chunks to work on another piston...
This engine simply locked up before chunks could propagate to the rear cylinders. The amount of energy in a single piston/rod failure is similar to a quarter stick of dynamite.
I’d send Nakamura a care package with old parts lol
Broken wrist pin?!?!?!? N/A?!?!? 🤯
In car footage of when it blew up?? Or any footage at all?
I don't have any
That motor was run at redline until every single piston gave up, there was no thought of a lift, lol. Agreed, I've never seen a wrist pin that went thru a frickin' blender, but now I have. How? Just don't lift!
Fascinating, thanks
VQ35HR is a great V6 when left alone, wish more people would swap its V8 cousin (VK50/ VK56) into them instead of a NA LS.
I wonder if it was over revved on a big 3rd gear entry and smashing it down into first to dig out of it. Can't imagine anything else to blow up a HR like this.
lol there is no telling sometimes u know , de is the strongest
My guess is valve float from over Rev as well.
it was at Adams kart track....
I came here to see catastrophic damage and I was not disappointed lol
lol
WOW that's some proper shrapnel. I mean wow.... it looks like you put those pistons in a blender
Jesus Christ he put two windows in that fucking motor never seen anything like this.
You can see a portion of why it failed is because of the paper gasket in the gallery gasket seal. that seal fails and gives low oil pressure often on HR Z's. @15:40 You probably overreved it and seized and he kept trying to use it IMO.
Those were all new I replaced them when we got the car
@@mawmotorsportsmaybe you did, but you can clearly see them blown out in the video
@@davislambert1605 no you are seeing the tabs they have on them they were not blown out
I broke a wrist pin in a turbo vq35de. Mine looked almost the same in literally one second.
He overrevved the shit out of it. I think the piston caught the side of the cylinder walls and kaboom
Did this one have the paper gasket replaced with the metal one ? I’ve heard of the HR engines going pretty catastrophically because of those little gasket. But most just get rod knock or window the block.
never seen an engine grenade this hard!
2015+ mustang gt vs 350z vs gt86 vs e92 m3? i know its kind of a strange pack of cars to choose from but keep in mind tracks where i live are mostly 2nd gear and some parts are 3rd gear. e92 m3 is the same price as mustang where i live. 350z and gt86 are same aswell and only a tiny bit less expensive than the other two. mustang got this weird self steer and well yeah i wanna get opinion from someone who preferably drove all of those and since im a mechanic i can deal with m3
Should have had a race sump or preferably a dry sump setup.
nope, there's an access cover for the water pump
you guys should save the timing components as spares save some money
Looks like oil starvation on the rod the failed, then trash went through and took out the valves
there is no way a vq35hr is $1000 USD regularly to find
in canada they are like $4000 minimum
yeah it is just he cost of them down here, I have bought a bunch of them. LS3 down here are 2500-4000 as well. We don't lose anything to rust and cars last a lot longer down here, so there are lots of extra cars, engines, parts, etc.
Looks like a money shot (aka misshift)
how could this be prevented?
guy money shifted
if you going to blow then blow big
W/o seeing the video . Oil starvation is my guess.
DE WINS AGAIN 😂😂😂😂
Lol there was no DE. Naoki wouldn't have one about him. The HR doesn't gasp at high rpm and is twice as strong
EXTREMELY HARD DRIVEN🤔
De_stroyed
Why would you blow a motor on purpose can you explain??
Massacre 😮
Water pump alone would make me steer clear. I'll stick to my BMW's