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DIY: RX8 engine removal how-to w/pics

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DIY: RX8 engine removal how-to w/pics

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Old 01-22-2018, 10:29 AM
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I've never done it either but without risk there's no reward and I also have an fc so I better learn how to rebuild these engines Atkins rotary has an instructional DVD that includes torque specs and a shop manual as well on the procedure that was personally recommended to me by Charles from black halo racing. I'm still waiting for the manual to come in but if you're mechanically inclined the info is out there
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Old 01-22-2018, 10:32 AM
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Originally Posted by TheRedRotor View Post
Yeah I removed them and also managed to mangle the clips beyond all usefulness lol but I plan to replace with mishimoto braided lines anyway. So you just pulled them apart? Because everyone says it's a quick release fitting but i don't see a lip that I can push in to release
Yah, they should just separate by pulling. Twisting is mostly to help get the parts to let go (there's no quick-connect mechanism holding them in place).

Originally Posted by BigCajun View Post
I'm considering that also.
I've never taken a rotary apart, so I'm debating whether or not $1k would be worth it, or maybe even wonder if they'd take it back in pieces if it's beyond my limitations.
You might want to send a PM to Mr. Pockets. He opened up his Renny only to find the parts list was going to be more than a reman. He mostly reassembled everything and Mazda accepted it. I don't remember if all of the springs/seals went into correct locations or if he just tossed them into the combustion chamber before closing the engine back up.
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Old 01-22-2018, 10:34 AM
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Okay perfect I'm just gunna soak them in penetrating oil AGAIN and try it out for today, other then the lines im a ground wire and the tranny bolts away from motor out
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Old 01-22-2018, 10:59 AM
  #329  
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Originally Posted by TheRedRotor View Post
Okay perfect I'm just gunna soak them in penetrating oil AGAIN and try it out for today, other then the lines im a ground wire and the tranny bolts away from motor out
Idk what penetrating oil you're using, but imo, PB Blaster works best.
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Old 01-22-2018, 11:02 AM
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I just grabbed a can of Kleen flo on my way out of work one day and that's what I've been using, maybe I should go get a can of PB
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Old 01-28-2018, 06:06 PM
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Okay guys I'm about 10 minutes from having my engine out but when removing the passenger side motor mount something snapped internally in the mount and now I can't turn the bolt that goes through the top at all. The entire rubber boot on the mount spins so I can't remove it from the aluminum arm that connects it to the block. Anyone ever experienced this before? It's blocking my motor from coming any further forward so I can't slip it past the input shaft and pull it out. I'm almost there it's killing me
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Old 01-28-2018, 06:17 PM
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can you get a multigrip on the rubber assembly that's turning ? If not it could be time for mr disc grinder or gas axe .
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Old 01-28-2018, 06:19 PM
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you'll have to cut the rubber part off so that you can grab the part that's spinning with some vice grips or large pliers. If it spun out like that it was probably close to failing anyway. You need new engine mounts ...
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Old 01-28-2018, 06:33 PM
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I tried to get needle nose vide grips in between the head of the bolt and the rubber part because I was able to turn the bolt a bit before it snapped but they were too thick I haven't tried gripping around the rubber itself yet...and I agree thank God I found out this way, I had plans for the BHR motor mounts Anyways now I have a great excuse haha
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Old 01-28-2018, 09:46 PM
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Get a saws all and whack the bolt off if you don't have torch or a grinder.
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Old 02-08-2018, 11:14 AM
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Does anyone know what size micrometer is needed to measure the wear of engine internals? I've been looking into purchasing one for the job but I'm not sure if I need a 1in, 2in or 3in. I feel like 1in is too small
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Old 02-08-2018, 07:02 PM
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UGH! If I had seen this years ago I would of saved myself literally over $2,000

Amazingly detailed thread though. Hopefully others can benefit from this instead of paying a company to do this like I did.
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Old 04-16-2018, 12:40 PM
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Newbie here

So I purchased a 04 rx8 6 speed and it is awesome so I bought my son one and turns out it will be a project (love it). So I'm fixing to pull the engine to try and attempt my own rebuild but seeing that there is metal shavings is scaring me for a rebuild. Who would you recommend to do a rebuild? My baby
Sons project
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Old 04-24-2018, 07:21 AM
  #339  
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Post this in your own thread in the New Member Forum.
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Old 05-12-2018, 09:45 PM
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Fascinating fasteners

I'm taking my time working on the removal of the engine, but I've come across a couple of bolts that won't make my life easy. I got to the part where I need to take the cross member out, and the one 17mm bolt that is in close proximity to the trailing lower control arm mount snapped the welds on the weld nut...on both sides (driver and passenger side)

I'm pretty much done for the night so I haven't taken a good look at it, but has this happened to anyone else? If so, am I going to need to take off the lower control arm to get to the weld nuts? This seems like it's going to be one of the more PITA fixes I've dealt with.

In any case, this write up has been an immense help, huge thanks to RotaryResurrection!!!
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Old 05-14-2018, 12:58 PM
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Hey everyone, I recently received my rotary engine stand adapter from mazdatrix and I just can't seem to figure out the thread pitch and diameter to mount the adapter to my engine. I was able to thread one of the engine mount bolts into one hole (closest to spark plug) but that bolt is too long. Also the hole underneath it seems to be a different size all together. I've made 3 trips to hardware stores today and am feeling a little annoyed. Anyone who may know please help me haha
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Old 05-17-2018, 01:37 PM
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Originally Posted by TheRedRotor View Post
Hey everyone, I recently received my rotary engine stand adapter from mazdatrix and I just can't seem to figure out the thread pitch and diameter to mount the adapter to my engine. I was able to thread one of the engine mount bolts into one hole (closest to spark plug) but that bolt is too long. Also the hole underneath it seems to be a different size all together. I've made 3 trips to hardware stores today and am feeling a little annoyed. Anyone who may know please help me haha
That looks like ac compressor bolts? Not sure at the moment.
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Old 05-17-2018, 02:01 PM
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I believe the a/c comp bolts are the 2 slightly over to the left and above however I'm not with my car right now so I can double check after work. I've marked the 2 holes I'm referring to as a/c comp in this image.
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Old 05-26-2018, 09:43 AM
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Contact

is there a way I could contact you for a possible engine rebuild?
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Old 05-26-2018, 10:00 PM
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Originally Posted by Viral View Post
is there a way I could contact you for a possible engine rebuild?
LMGTFY
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