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-   -   What could have caused this damage?? (https://www.rx7club.com/new-member-rx-7-technical-256/what-could-have-caused-damage-987370/)

Bori12A 02-12-12 09:50 AM
What could have caused this damage??
 
4 Attachment(s)
Guys I need some help I was wondering if you could help me with some possible causes as to why this happened? I've never run into something like this so I don't have even a hint of an idea... I repaired the motor already but I haven't turned it on because I want to be sure of what caused it so I don't damage the new internals too. Any help is greatly appreciated I know some of you guys have seen this or probably worse thank u...By the way its a 13b 6port

7thseven 02-13-12 03:58 AM
It just looks like the engine blew a apex seal and got caught all up in there just scrapping against the housings.good pics by the way looks like some real damage bummer.now when u say u repaired the engine did u use new rotors and housings cause that looks super bad like not fixable bad.idk tho

dwb87 02-13-12 04:46 AM
Wow. That is some major damage. It may have been an apex seal or perhaps a foreign object had been dropped into the engine. Those are completely unsalvageable.

Originally Posted by Bori12A (Post 10976238)
Guys I need some help I was wondering if you could help me with some possible causes as to why this happened? I've never run into something like this so I don't have even a hint of an idea... I repaired the motor already but I haven't turned it on because I want to be sure of what caused it so I don't damage the new internals too. Any help is greatly appreciated I know some of you guys have seen this or probably worse thank u...By the way its a 13b 6port
Now, when you say this... Do you mean you rebuilt the engine with a different rotor and different housing? (If so, what are you afraid of?) Or are you atemptng to use the pictured rotor and housing?? I know it seems like a silly question, but the way you've phrased that highlighted portion, it almost sounds as though you're afraid to turn over the engine because you are trying to use these parts. I sure hope that this is not the case.

7thseven 02-13-12 05:15 AM
Originally Posted by dwb87 (Post 10977278)
Wow. That is some major damage. It may have been an apex seal or perhaps a foreign object had been dropped into the engine. Those are completely unsalvageable.



Now, when you say this... Do you mean you rebuilt the engine with a different rotor and different housing? (If so, what are you afraid of?) Or are you atemptng to use the pictured rotor and housing?? I know it seems like a silly question, but the way you've phrased that highlighted portion, it almost sounds as though you're afraid to turn over the engine because you are trying to use these parts. I sure hope that this is not the case.
Thats exactly wat im saying it sounds like he might of used the same parts and like u said I REALLY REALLY hope thats not the case.

Bori12A 02-15-12 05:52 PM
I did used a new housing and a new rotor but what I'm afraid of is that maybe this was caused by bad injectors or something that would cause this problem to happen again.

Bori12A 02-15-12 05:56 PM
The other motors I've opened were minor stuff like water seals or something like that but never this level of damage. I knew it was bad because the when the car turned on it sounded horrible, but I didn't know it would be this bad. The motors back in the car everything's put back on (a/c, power steering, alternator, etc.) and I've turned it on about twice and its giving me trouble to start but once it does it feels fine?

Bori12A 02-15-12 05:57 PM
I bought the rebuild kit from Atkins all the water seals, gaskets, oil seals, corner seals, side seals, everything is brand new but I want to make sure he doesn't come back with the same problem?

immortalmcf 02-15-12 06:16 PM
damn i have never seen a rotor with that much damage

misterstyx69 02-15-12 11:10 PM
A rebuilt engine is like a fat girl jumping onto a bed.
It takes a little time for things to settle..lol.(ewww!)
So,a newly rebuilt engine may be hard to start at first as the seals and shit are getting settled in.It won't take long though,and the compression will be up and you can drive around and have some fun.
It just sounds like you are worried to even drive the car,,shake that feeling,it is Just a Car.not GLASS!

dwb87 02-16-12 12:59 AM
Originally Posted by Bori12A (Post 10980910)
I did used a new housing and a new rotor but what I'm afraid of is that maybe this was caused by bad injectors or something that would cause this problem to happen again.
You should have had your injectors serviced before starting the engine anyway. I doubt your injectors caused this, though... Something must have been loose in the engine or improperly installed. Did you rev the piss out of it or something?? When you took the engine apart, what was it that you found in that particular housing with the rotor? Was there anything in there along with all of the damage? It's possible that you dropped something into the engine while rebuilding it. Maybe even into the LIM. Maybe not everything on the rotor was secure.

Start the new rebuild.

GrossPolluter 02-16-12 02:15 AM
This happened to a newly rebuilt engine? That would suck if you dropped something in there.

My first engine blew from running too lean and the apex seal broke. 1 out of 2 rotors was completley blown, I drove it home on 1 rotor. When I took apart my engine, One rotor looked exactly like that. Engine detonated, then apex seal broke, then pieces started bouncing around and everything in that rotor was destroyed including the side plates. An apex seal flew out and chipped the one of the fins on my turbo also

Bori12A 02-16-12 05:04 PM
Originally Posted by misterstyx69 (Post 10981386)
A rebuilt engine is like a fat girl jumping onto a bed.
It takes a little time for things to settle..lol.(ewww!)
So,a newly rebuilt engine may be hard to start at first as the seals and shit are getting settled in.It won't take long though,and the compression will be up and you can drive around and have some fun.
It just sounds like you are worried to even drive the car,,shake that feeling,it is Just a Car.not GLASS!
Lol never thought of that. Usually its no big deal I'd drive it but since its not mine or one of my friends' I'm trying to be as cautious as possible.

Bori12A 02-16-12 05:11 PM
Well the car isn't mine I'm not exactly sure what happened to it but when I was putting the motor back in I had the lower half of the intake already put on and I covered it I stuffed each hole so no way something went in. When I disassembled there was nothing loose inside and it may have been worked on before because the water rings looked and felt about new and the oil rings on the rotor were brand new...But since it only had about 115k on the motor I didn't think it would've failed so soon.

Bori12A 02-16-12 05:15 PM
The motor's starting and the car drives good I haven't given it any hard driving yet, but the oil pressure is at a good level temperature is normal. Its not showing any symptoms right now I guess the best way to ask the question would be is there anything else I should check before declaring this a done deal and driving as usual. The uncertainty is probably because this is my first fuel injection motor. That's why I was wondering if injectors caused this because I hadn't seen this before. Thanks for your help

Bori12A 02-16-12 05:19 PM
2 Attachment(s)
This is when I was done I got injectors off of a Saab 93 but I haven't put them on yet I kind of don't want to give them to this guy but if you guys think I should put them on let me know.

RotaryEvolution 02-16-12 05:25 PM
don't bother upgrading the injectors on an n/a 6 port.

Bori12A 02-16-12 05:26 PM
Originally Posted by Karack (Post 10982376)
don't bother upgrading the injectors on an n/a 6 port.
Really? why not if you don't mind me asking?

misterstyx69 02-16-12 05:33 PM
It doesn't need it.It already is overfueled with 460's.

Bori12A 02-16-12 05:40 PM
ok so done deal??

dwb87 02-16-12 10:42 PM
Yes^

I think you painted some areas that do not need paint. It makes me question whether or not you dropped somethng into the engine.

Bori12A 02-23-12 03:43 PM
no I painted before closing the motor I'm sure I didn't drop anything


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