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Holy crap! There goes my rebuild.

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Old 09-22-14, 01:51 AM
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Holy crap! There goes my rebuild.

Well I got the engine ready to be pulled. Disconnected the oil cooler lines and drained the oil. The oil looked a little funny and I got a flashlight and shined it on the oil. Glitter! Glitter everywhere. . I'm guessing the bearings inside of it are shot. Oil pump failure?
I had noticed the oil pressure gauge always ran low and one day I noticed it had just quit. I figured the sending unit had died. Now I'm guessing it was accurate all along. My fault. Weird thing is with zero oil pressure it still drive 100 or so miles? Doesn't make sense? Any ideas?
Here is what I came up with. Car was bought with unknown engine origin. I know a factory engine wouldn't do this.

http://www.aaroncake.net/rx-7/damage.htm
Old 09-22-14, 02:48 AM
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If you were going to rebuild it anyway, take it apart and take some pictures of the damage. Much better than guessing based on a few sentences.
Old 09-22-14, 03:02 AM
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I'm guessing I'm gonna need new bearings and everything. Is it cost worthy/effective? I'm worried about the whole motor just being trashed.
Old 09-22-14, 06:23 AM
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My buddy had an 6 port turbo conversion that ran real nice..
Up until the point it just quit moving it out of the garage.
He had blocked off the oil at the sandwich adapter and starved it,so it Stuck it the rotor bearing right to the Eshaft.
So ya you can drive it without oil pressure.
You just found out "how long".
Old 09-22-14, 07:30 AM
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Originally Posted by re-rx7
I'm guessing I'm gonna need new bearings and everything. Is it cost worthy/effective? I'm worried about the whole motor just being trashed.
Who knows? It costs nothing to tear it apart and find out
Old 09-22-14, 12:17 PM
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Originally Posted by misterstyx69
My buddy had an 6 port turbo conversion that ran real nice..
Up until the point it just quit moving it out of the garage.
He had blocked off the oil at the sandwich adapter and starved it,so it Stuck it the rotor bearing right to the Eshaft.
So ya you can drive it without oil pressure.
You just found out "how long".
Jesus that's crazy. I just know that when glitter is present it means it's throughout the block. I'm gna have to remove the oil cooler and turbo lines for a cleaning now.
Old 09-22-14, 12:58 PM
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Originally Posted by Valkyrie
If you were going to rebuild it anyway, take it apart and take some pictures of the damage. Much better than guessing based on a few sentences.
Gonna try and do that. Just gta find a huge socket and break over lol.
Old 09-22-14, 01:45 PM
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Originally Posted by re-rx7
Gonna try and do that. Just gta find a huge socket and break over lol.
Mazdatrix: https://www.mazdatrix.com/ftools.htm

Or I picked up a 2&1/8 inch socket and 3/4 to 1/2 drive adapter from tractor supply. This was for re-assembly. I took my block to a diesel garage and had them impact it off( though I think my gun would do it I didn't have a socket at the time). You'll still need a tool to keep the motor from turning unless you get it impacted off, but you'll need it for reassembly anyway.
Old 09-22-14, 02:32 PM
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Originally Posted by re-rx7
Gonna try and do that. Just gta find a huge socket and break over lol.
Take that sucka apart and let us see what happened. I am always sad when someone says thier engine bit the dust but, I always am very eager to see what happened.
Old 09-22-14, 02:37 PM
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Originally Posted by Dak
Mazdatrix: https://www.mazdatrix.com/ftools.htm

Or I picked up a 2&1/8 inch socket and 3/4 to 1/2 drive adapter from tractor supply. This was for re-assembly. I took my block to a diesel garage and had them impact it off( though I think my gun would do it I didn't have a socket at the time). You'll still need a tool to keep the motor from turning unless you get it impacted off, but you'll need it for reassembly anyway.
Originally Posted by jjwalker
Take that sucka apart and let us see what happened. I am always sad when someone says thier engine bit the dust but, I always am very eager to see what happened.
Its going to RP for a rebuild in the next week. They will be the one doing the disassembly when i take it to them on Thursday. Spoke with Ari over the phone and he seems to think some of it will be reusuable.
Old 09-22-14, 09:26 PM
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bearings are about a 100 a set, but pressing them out and in isn't for a noobie, even with the right tools.
Old 09-23-14, 02:49 AM
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bearings are a bit more than that ,, $30 each for rotors and $35 each for stats // $130 minimum without post
,, and add about $150 for the decent atkins full height dollys for pressing yourself


not including the torringtons or options for FD or 3 window or race groove bearings


skill wise ,, not too hard , just need to scribe a line to line up the locking tab
but that is for basic bearings,, replacements for those that have not yet turned inside the rotor or stat gear

else you may need some custom bearings ( goopy sells an oversize for turned rotor bearings )
or maybe a grub lock mod or snap ring to fix that properly

the motor itself has likely run with no oil
so expect that bearings have died, maybe turned in the rotor or stat thus making the dis assembly very difficult
and also that the oil pump is shot,, and the plates blued and shrunk

housings may be good .. but that may be the only bits that are salvageable

ask me how i know

no.. dont ..
Old 09-23-14, 12:57 PM
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Originally Posted by bumpstart
bearings are a bit more than that ,, $30 each for rotors and $35 each for stats // $130 minimum without post
,, and add about $150 for the decent atkins full height dollys for pressing yourself


not including the torringtons or options for FD or 3 window or race groove bearings


skill wise ,, not too hard , just need to scribe a line to line up the locking tab
but that is for basic bearings,, replacements for those that have not yet turned inside the rotor or stat gear

else you may need some custom bearings ( goopy sells an oversize for turned rotor bearings )
or maybe a grub lock mod or snap ring to fix that properly

the motor itself has likely run with no oil
so expect that bearings have died, maybe turned in the rotor or stat thus making the dis assembly very difficult
and also that the oil pump is shot,, and the plates blued and shrunk

housings may be good .. but that may be the only bits that are salvageable

ask me how i know

no.. dont ..
Your irons weren't salvageable? Wow that is crazy. Guessing you had glitter in the oil when you drained it?
Old 09-23-14, 06:41 PM
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yes .. if run dry the irons blue and shrink and also the side seals on the rotor wear quickly

the rotor may or may not be salvageable , depends if bearings turned or if side seals fused into the rotors
housings pulled up OK . so some smiles

.. myself always had a healthy dose of spare blocks to draw parts from , last count is at least 7 NA FC blocks and almost as many turbo ones ( among about 20 early 12a/ 13b blocks )
Old 09-23-14, 07:34 PM
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Originally Posted by bumpstart
yes .. if run dry the irons blue and shrink and also the side seals on the rotor wear quickly

the rotor may or may not be salvageable , depends if bearings turned or if side seals fused into the rotors
housings pulled up OK . so some smiles

.. myself always had a healthy dose of spare blocks to draw parts from , last count is at least 7 NA FC blocks and almost as many turbo ones ( among about 20 early 12a/ 13b blocks )
Spoke with the owner of pinapple racing (cant remember his name) he pretty much said what your saying except he thinks the whole engine is done. Still going to take it to RP and let them rip it apart. I dont have the time with my job.
Old 09-23-14, 07:39 PM
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Weird I was apart of this thread and didn't even know it ... Looks at Styx, lol

Tear it down after my front stationary gear failed to the eshaft I dissadembled the block, everthing including the rotor bearings are fine had little glitter in the oil, but take it apart and inspect everything!
Old 09-23-14, 10:52 PM
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..when Glitter is present you can bet another Mariah Carey movie is in the works..

Ah Hell..NO!
Old 09-26-14, 03:00 PM
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Motor is at Rotary Performance getting tore down.
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