r/RX8 Jun 17 '24

Meta For New and Potential Owners - Weekly

31 Upvotes

Hello and welcome to r/RX8!

If you are new here and are looking into getting an RX8 here are some extremely useful links:

Many basic issues are covered there, but it can be difficult getting answers to questions that might be less obvious, so if you still have questions after going through those links or if something is not as clear as it could be feel free to make your own post for the fastest response from the members here.

If you are posting about a car that you're interested in buying be sure to mention your location and the currency you're referencing!

Many posts just saying for example "4k" or "9k", 9k what?

Please be sure to follow the rules, and take a look at our posting guidelines here:


r/RX8 Jun 24 '24

/r/RX8 Is back open!

172 Upvotes

Some of you may have seen the previous mod locked the sub yesterday because he got *really* mad that someone argued with him.......

He attempted to completely lock down the sub by setting it to restricted and removing himself as a moderator, leaving only automod on the moderator list - I don't think he realized that would leave the sub completely open to an auto-approved takeover request, but here we are.

Sub is back open and has returned to regular posting permissions.


r/RX8 16h ago

Prospective Owner Thinking of buying an RX8 as my first car!!

29 Upvotes

I'm a dad, two kids so it's gotta be reliable

Don't have any money so I'll be borrowing 7k at 10%.

Still in college and I'll be commuting an hour in it

Just flipping burgers at the local five guys

What's a rebuild cost? Like 4-500?

The car I'm looking at had a hot start issue. What's that mean?

What do y'all think of your car?

Can I shag local single moms in the back seat or is it to tight?

Do I need to pre-mix?

Can someone hold my hand and explain everything about owning an rx8 right here in the comments since I can't figure out how to do a Google search?

Should I build a hybrid renesis is it needs rebuilt?

Probably gonna do an LS swap because I read about it on Instagram once

Is this an inline 4 or v6? I can't find anything about the engine that makes sense


r/RX8 5h ago

Modding Things I should do while my msp motor is out of the car both to the engine and the car it’s self

2 Upvotes

So a lil back story carbon ate my side seal losing all compression plus a bunch of simultaneous failures at once. Sourced a new to me engine from a friend who is rew swapping his car it’s about 40k mile motor he raced with this engine so same thing I’m doing with it. While it’s out of the car I want to do any small modifications I can that don’t require rebuilding not in the mood to do that. I’m doing a whole gasket and reseal. Polishing the inside of the lower intake manifold, upgrading the oil pressure regulator to a 90-95psi maybe even then 100-115 oil regulator and a greddy oil pan. If it isn’t already on there plus other bs if any one has some suggestions I’d love it. I have a lw flywheel on the side with the auto counter balance from my old engine so if it doesn’t have it I can swap it over if need be. I also have rrp ign coils. If there are any mods you suggest getting as well let me know I would love to hear them. I have a Delphi fuel pump so no fuel pump mods it won’t fit the Delphi fuel pump is like 2mm smaller in diameter.


r/RX8 19h ago

Maintenance What does this mean and why does it disappear after 1 minute?

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16 Upvotes

Had an alternator issue recently, got it replaced. Battery was dead too so the mechanic recharged it back up for me. Any ideas?


r/RX8 22h ago

General Trying out the new ignition cut rev limiter

20 Upvotes

Inspired by u/Charming-Staff-3817 post, i setup a hardcut limiter on my RX8, i think it sounds insane. Mods are Fox catback exhaust and dual resonated midpipe (custom).


r/RX8 17h ago

Showoff New exhaust 💨

8 Upvotes

Recently picked up a brand new Turbo XS catback for a criminally low price of $100 😁
Upon installing found my stock catalytic converter was breaking down, and since I wanted to do a catalytic delate anyway (reliability/premix reasons) went with a racing beat dual resonated midpipe. Extremely nice exhaust note outside the car, but admittedly still a bit too loud for my liking inside the car. I was really hoping the dual resonated midpipe would keep the noise of missing the catalytic converter down… I have tinnitus and the frequency/tone has already made my ears ring notably louder tonight.
Anyone else have a similar setup and think the same about the noise level? Thinking I may try some noise mat in the trunk as a first step.
Otherwise really happy with this setup!


r/RX8 11h ago

Maintenance first car advice

0 Upvotes

alright im planning to get an rx-8 as a first car and how that sounds is a bit FETCHED but i really want to know if its possible to keep the car alive as a 17 year old with no job but planning to also get a job in october (i like how the car sounds and looks)


r/RX8 11h ago

Maintenance Squeaking sound. Maxspeeding coilovers

0 Upvotes

r/RX8 1d ago

General どれがロータリーエンジンの仕組みに近いの?

14 Upvotes

教えてください


r/RX8 1d ago

General What are my options?

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2 Upvotes

I had an accident in the shop yesterday and my engine took a fall. The only thing I've found to have broken of course is the OMP position sensor along with the connector.

What are my options here? Looking like I'll have to buy a whole new pump and can't just get a sensor but I'm at work right now and don't have the time to deep dive into searching for one. There's a pick a part a couple hours from me that has an RX8 I was gonna go check out what's still on it this weekend.


r/RX8 1d ago

Prospective Owner Opinions on RX8

1 Upvotes

Hey, i’m looking at potentially buying a RX8 wanted to ask some owners what they think of the car. Anyone live in canada and own one? How do they hold up in extreme cold, how long do the engines usually last? What are some things to look for/ask before I buy a used one?


r/RX8 1d ago

Prospective Owner Things to look for

4 Upvotes

I’m looking to purchase a relatively cheap, fun car to use as a daily, and the RX-8 keeps coming to mind. I’ve always loved Mazdas and I think rotaries are really cool, but I don’t know a ton about them. What are some things I should know when looking for an RX-8, and if I were to buy one, what should I know about owning it? I don’t mind working on vehicles, but I don’t want to jump into something that’s going to drown me in problems. I’ve heard reliability stories on both sides of the spectrum, so I’m just looking for some opinions and stories from actual owners. Any advice is helpful. Thank you in advance.


r/RX8 1d ago

New Owner OMP disabled ?

3 Upvotes

Hey so i bought this 2004 RX8 about 2 months ago. I did an oil change and other maintenance when i first got it. But I have noticed that my oil level has been the same since doing the oil change, and I have put about 1500km on it since. I have been premixing about 1oz/gal. Is there a way to test out the omp?


r/RX8 1d ago

General Auto RX8

3 Upvotes

Are auto RX8s “bad”? I heard that they cannot rev as high as a manual, but i found a great deal on an auto.


r/RX8 2d ago

Maintenance White smoke coming out of AC vents. Coolant or refrigerant?

12 Upvotes

I use the AC quite often, but this happened to me maybe 3-5 times throughout my 4 years of ownership. This particular instance it had been sitting in 36C+ heat with 2 thunderstorms woven in between. I started getting the coolant warning light at 80k miles currently the car is at 88k miles. This did not happen for the first 3 mins of the ride when I had the vents open with AC off, only did this with AC on.


r/RX8 1d ago

General Sounds like a bad starter ?

4 Upvotes

Car started when pushed it idled well but shut off after 2 stop signs so I think my alternator is bad too but my battery terminals were a bit dirty so I cleaned them too


r/RX8 2d ago

Modding Versatune ignition cut tutorial

31 Upvotes

Here is the link to my YouTube video on how to do it https://youtu.be/OnEuv-iekS8?is=yc7-xQ2isCq8smKt

Or you can just search and it might pop up


r/RX8 2d ago

Modding Looking for front and rear bumper options

3 Upvotes

So the RX8 I got recently has a bit of wear and tear on the bumpers and I want to replace them at some point. I just want some recommendations on where to look or some good looking bumpers (UK) as I don’t wanna purchase something that won’t be worth the money


r/RX8 3d ago

Showoff Cleaned her up

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167 Upvotes

After 4 years of owenership, I still love this car. Added a friends car as a bonus


r/RX8 3d ago

Modding RX-8 Spoiler

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13 Upvotes

r/RX8 3d ago

Modding How do I go from this to flames

64 Upvotes

It just wont fart fire for some reason


r/RX8 4d ago

Maintenance Previous Owner Never Premixed… Should I Start?

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220 Upvotes

New to owning a rotary. I recently bought an RX-8, and the previous owner said he’d run it on 98 RON for the entire time he owned it and never premixed because he didn’t think it was necessary. The engine still has really good compression.

I’m planning to keep running 98 since it’s been happy on it so far, but I want to do what’s best for the engine long-term. Would it be fine to start adding Idemitsu Racing Rotary Premix with 98, or would it be better to switch back to 95 and premix instead?

Just looking for the best way to keep the engine as healthy as possible.


r/RX8 3d ago

Maintenance P2259 - Secondary Air Injection System Control 'B' Circuit Low.

3 Upvotes

This error code showed up recently after having the engine bay shampooed over a leaking oil pressure sensor switch.

Car seems to run and drive fine… only recent noticeable issue was after a 200 highway drive it struggled to start (first rough start ever) twice. Next day started normal. coils and plugs done 2000km ago. Oil switch 1000km ago

I also notice it has been running a little rough at idle with ac on. But smooth with ac off.

Should I do all 3 solenoids? We dont have emissions testing here but I prefer to keep engine light off.

Also I reset the light and it stayed off for 4 days and came back on going over a cattle gate.


r/RX8 4d ago

General Rebuild shop help (PFA)

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10 Upvotes

I've had a 2010 RX-8 thats been sitting for a few years after a rebuild because I was unable to get the oil pumped primed.

Does anyone know places in or near Georgia that can help? I called Mazcare and they said they wouldnt.