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My Rx-8 is dying?

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Old 02-27-2016, 02:38 PM
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My Rx-8 is dying?

Just came back from the dealership. I got a compression test done

Rotor 1 .71. .67. .70. RPM 259
Rotor 2 .54. .54. .54. RPM 259

Battery is new and all parts related to the battery replaced.(the connectors on top and such)
Starter is new.
Fuel pump is new.
Radiator New with new cap and new container for coolant and new coolant
New gas cap(other one was worn out)
Manifold Solenoids new.
Oil Change done recently
Cat Converter(Fairly new under warranty at the time)
Plugs , Coils, Wires are new

Ideas how long I have?
Might sell it, Id hate to sell it, the passenger side has cracking on the dash.
Driver seat warmer is malfunctioning, barely any heat.
When the car is super cold the breaks squeak for like the first couple of stops then that sound goes away.

Anything else besides the apex seals can cause low low pressure.

Last edited by mazdafan1892; 02-28-2016 at 04:07 AM.
Old 02-28-2016, 06:28 AM
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Would buying a dash cover be bad if I am trying to sell it? Meaning would it look like I am trying to hide something if I buy it? I think it would look nicer as an investment vs that cracking showing, AND it can act as a defector to the sun to prevent further damage. Right now I am using one of these

Old 02-28-2016, 07:57 AM
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You gonna eat that?
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Originally Posted by mazdafan1892
Would buying a dash cover be bad if I am trying to sell it? Meaning would it look like I am trying to hide something if I buy it? I think it would look nicer as an investment vs that cracking showing, AND it can act as a defector to the sun to prevent further damage. Right now I am using one of these

If you try to sell it with a failing engine, will you tell the potential buyer it's dying?
A dash cover would make it look better, it would be a nice touch.
If it was me, I would say it has a crack in it.
I don't like to deceive people, my conscience would bother me.
Old 02-28-2016, 08:50 AM
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Originally Posted by BigCajun
If you try to sell it with a failing engine, will you tell the potential buyer it's dying?
A dash cover would make it look better, it would be a nice touch.
If it was me, I would say it has a crack in it.
I don't like to deceive people, my conscience would bother me.
Maybe buy the dashboard but let them know it has a crack in it. Though not sure if it may interfere with the air bag deployment so I might keep it the same. As for the engine I am not trying to be deceptive but if they want they could have a mechanic check it out. Truth be told, I am having hot start issues. So I am nervous if they start it, shut it off and start it again. It kinda needs a few min to cool off after.
I am considering two other options.

1. Buy the reman engine and raise the price.
2. Get a engine swap and keep it. Though I dont even know the first thing about where or who might do something like that. I hear good things about LS swaps.

Lastly I am not sure how much I could get for it now that the engine is half kinda working and the crack in the dash, they may mention the rotors and the breaks are worn but not ready to be changed. More like 50-60% used.

Please respond.
Old 02-28-2016, 10:45 AM
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You gonna eat that?
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It depends on your situation.
Can you afford $5k ballpark for a remanufactured engine?
That would be my choice.

I currently could afford and have the ability to remove the engine and have it rebuilt by one of the reputable shops like Rotary Resurrection.
My situation could change in the near future and make it more difficult.

LS swaps imo, are for people who are not happy with the 8's performance and want to 'go faster', or mechanically inclined people who enjoy working on cars and possibly can source good engines cheaply, or owners who can pay someone to do it cheaper than a reman.

To me, the rotary is the soul of the RX8.
To swap it with a piston engine takes the soul out of it, but I'm kind of old fashioned.

I read many posts of people who regret losing their 8s.
Do your research so that you can make an informed, educated decision before you do something you may regret.

Some people who are not mechanically inclined would be better off buying a traditional piston engine vehicle.
Only you know what your best choice is.
Good luck with your decision.
Old 02-28-2016, 02:32 PM
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Time for boost...
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What you should do is sell the car.

Trying to go through a rebuild requires research, patience and affordability. There are many reputable builders who you could try contacting to see if they'll give you a rough estimate and an idea of what the process will be. Then you would need to make the arrangements to get the car to the shop.

It's a lot of work, but if you want to keep the car, you need to do a LOT of research. And I'm not bashing you, but I don't think you're up to that task. Don't take that as an insult. It's just a fact that you need to admit to. Once you know your limitations, the process will go a lot smoother for you.

Sell the car with FULL disclosure of the engine and other issues. Search around for prices of other rx8's with failed compression as reference. Then use the money you would have used for the rebuild and just buy another rx8.

But do your research on each car you look at. Get the compression numbers. Get the maintenance history.

That's just my .02
Old 03-01-2016, 11:38 AM
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I have to agree. I love my 8. And as I would love to have more power i also feel the soul of the car is the rotary engine. I love the sound and feel of it. Not sure if I'd be happy driving it even if it was much faster with an L's swap. I'd disclose all information and sell it and buy another one.
Old 03-09-2016, 05:02 AM
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Is there any way to prove the engine could be damaged from hitting potholes? I recently had it checked out by my insurance carrier and they said no, I am not covered cause the car's "exterior" looks fine. ???

Thinking about engine swapping but looking into things. I feel if I sell I wont get a good deal of cash from it.
Old 03-09-2016, 09:37 AM
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Not unless you can get money for damage to the car itself and use it for an engine. I had a guy with a trailer pull out in front of me and lose some small debris and all it really did was scrape up two wheels and damage a tire a headlight slightly ( can't notice without really looking) front bumper and skid plates and my insurance wrote me out a check for 7900.
Old 03-09-2016, 09:54 AM
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Here is an option that has not been brought up, buy a spare engine w/ low compression and send it someplace to have it rebuilt professionally. That way when your engine goes, you have a fresh rotary to drop in with minimal down time. Send the original motor off to have rebuilt and then you have a spare. That was my plan but things changed for me.
Old 03-09-2016, 11:56 AM
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That's what I'm doing. I was able to pick up an 05 complete car in good condition but low compression for 1500 pulled the engine and am building it myself but I've built these before. And now that I have two engines they are both going to be Bridgeport ed tuned and turbocharged
Old 03-18-2016, 10:47 AM
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Another option is to rebuild it yourself.
It's really not difficult. Between all the information and experience you can ping here and at rx7club.com you shouldn't have a problem.
There are also videos you can get from youtube or/and atkins rotary that'll step you thru it.
Old 03-18-2016, 11:13 AM
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Originally Posted by rxgt08
That's what I'm doing. I was able to pick up an 05 complete car in good condition but low compression for 1500 pulled the engine and am building it myself but I've built these before. And now that I have two engines they are both going to be Bridgeport ed tuned and turbocharged
Originally Posted by Freq
Another option is to rebuild it yourself.
It's really not difficult. Between all the information and experience you can ping here and at rx7club.com you shouldn't have a problem.
There are also videos you can get from youtube or/and atkins rotary that'll step you thru it.
Reading fail.
Old 03-18-2016, 02:39 PM
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quite a few good suggestions have been give above, some great info.


LS Swap will be far more expensive than the rebuilding your renny
I won't advise you to Rebuild the Renny by yourself, investing in the tools and all will be costly

Insurance won't reimburse your for engine damage, unless it was caused by flood or something however, they would cover any external damage, theft, and etc

If your car is in top notch shape, then get it rebuilt by a reputable builder, if not then, sell the car and buy another rx8 with good compression.
Old 03-18-2016, 06:43 PM
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I have to agree as a master tech it's not as easy as it sounds and the tolerances are very close measured in thousandths of inches. If you are not familiar with micrometers and calipers as in measurements and haven't had the training and don't have the proper tools then don't mess with it. While rotaries are not overly complicated I know several guys that can build a bad a** piston engine but won't touch a rotary. If you are interested I have an 06 with a fresh engine, car has 123k on it is a gt package I'd consider doing a trade plus a little cash and will work with payments. Car is ready to drive
Old 03-19-2016, 08:11 AM
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Thanks all, I decided to invest guys and have Mazda put a new "reman" engine in. Soon I am considering selling it. I felt it would be a VERY hard sell if the engine isnt operating properly. Everything else is pretty much replaced. I hope I can get something good for it. Wish me luck whatever happens.
Old 03-31-2016, 08:11 AM
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Hello everyone sorry to post this question here but I am new in the forum and dont allow me to create a topic.
A couple days ago I was drving and the car had a missfire, I stopped the car and wait for a while and try to start the car, car started but the missfire was still present the car was barely moving. I ended calling a tow truck to take the car home.
Next day I tried to start the car again, started again but missfire there too, after a while the car directly wont start at all, is more now even sound like dont want to start at all, when turn the key all I can hear is the started spinning but dont sound like if wanted to start.
After that I check the MAF and seems like had a little oil on it, checked the oil level and seems like the day before when I replaced the oil I put in a little bit to much.
Now I removed the excess oil that like I said was just a little but just in case, and clean the MAF but car keep not wanting to start up.
Do someone have some idea what would be the problem?
Also had that I though now would be flooded, did the deflood process but nothing, is more while doing the unflood process wasnt difference between when you press the gar or when release it, was like if I even released the gas.
Thank you


Also said that the car didn't had any problem before this, always start first time cold and hot, no noises and run perfectly.
Old 03-31-2016, 08:28 AM
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Usual suspects are ignition coils.
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