Motor had a little over 2,000 km before the turbo's blew. It's 35 even pulses with no skips at all which is why I find it strange. I hope its not the seals lol, they're NRS ceramics. That would cost me more then a new OEM housing o.O

thewird

If it was a seal blown, I wouldn't think it would make 35psi in even pulses, you would at least have one face making more then normal, and I doubt all 3 seals would go equally, hopefully just springs are the case.

I hope its something simple like that too...

thewird

Given the amount of oil consumption and the balanced compression, I think you're gonna find a failure common to all faces (on one of the sides). And it's not going to be the apex seals or springs.

Any guesses to what it could be? 5 bucks to the person who guesses it right lol. It might not be leaking oil anymore, I think there was just so much oil in there that it took more then running it for a few minutes to clean up.

thewird

Well boys and girls, the original assumption was correct. The oil seals and side seals got busted to hell taking the side housings and rotors with them with. Apex seals, bearings, housings are fine but going to need front and middle side housings as well as new rotors for both (My new 20b rotors toast :wallbash:). My mechanic said he would never had imagined it would be this bad and he has never seen anything like it. Also, was really disappointed because of all the hard work my mechanic put into those ports...

I'll post pics in a sec...

thewird

Pics taken with my phone camera....

*Click for high-res
http://thewirdsdomain.com/rx7/engine/11-07-08_1220s.jpg
http://thewirdsdomain.com/rx7/engine/11-07-08_1221s.jpg
http://thewirdsdomain.com/rx7/engine/11-07-08_1313s.jpg
http://thewirdsdomain.com/rx7/engine/11-07-08_1314s.jpg

thewird

Yikes! Looks like you ran your oiling system waaaay too hot.

Or...lack of oil due to blockage or low oil level, which took out everything including the turbo's

How did your oil pickup look?

you're not having very good luck with your engines. Although the first engine was to be expected, any idea what happened with this one? Are plates like that reusable?

The plates are not reusable since they have been heat scored.

thewird

hey sorry to hear its not so good wish i could see the pics right now but alas im currently deployed and its filtered :(

z

look for a used Noble M400 :)

ouch man, that sucks, good luck with your next set.

:( those pictures make baby jesus cry

That oil control ring looks like it was installed incorrectly. Hard to tell from the pic, but it appears as it was torn as it was put in. Is the ring still pliable? Oil control rings rarely fail expect due to age, or improper assembly. Side seals mostly fail if clearanced wrong or the port is shaped wrong. Still, looks like you had on oil starvation problem. How are your oil coolers? Was the oil pump replaced or at least inspected during the last rebuild? Make sure the key is there. It is very easy for the key to pop out and slide behind the gear, and you won't even notice.

Another theory from Bryan at BNR Turbo's is that the stock BOV spring got stuck open and the turbo's overspinned and failed starting the oil leak which eventually led to the low oil level causing the engine failure. This theory does seem to match the series of events that took place before I noticed the engine losing power which was the turbo's losing boost and I'd hear a wooshing noise when I tried to go into boost. The boost came back on after I hit high RPM and WOT which at that point is most likely when they overspan and started the oil leak. Again, this is just another theory.

Maybe, once he opens up the turbo's we'll know more of what happened.

thewird