mazdafan1892

Finally I have the results from Mazda, the cold compression of rotor 1 in the engine is in the 5s but rotor 2 is in the 6s, like 6.5. Anyone know how long I have. God it creaks my heart to sell this car. The same night I was told this a hot girl came up to me at the gas station, saying hey nice car!. That killed me. How much does it cost to get the engine rebuilt. Is it really that hard to do? Boy am I really milking the thread? Thanks for all the help bros.

RX8Soldier

iTrader: (24)

How long do you have? As long as you're willing to drive around with a failed engine.

How much will it cost? Depends where you have the work done. Plenty of builders here and outside of the forums.

Is it hard? Probably for you.

Are you milking this thread? Yes. You really need to search for your own answers. Your questions aren't dumb. They're just lazy.

Chri5718

I a considering purchasing a 2005 Mazda Rx8 Shinka, the car has 35K on the original motor. The dad of a friend of mine owns the car and would like to purchase a chevy volt. He is selling for 6K , is this a fair price?

NavyScubaSteve

It depends on a lot of other stuff outside of mileage, year, model. As long as the paint and interior are in good shape, along with no major engine, transmission, clutch issues. Thats great.

Just ask to test drive it or ask him. When doing so make sure you redline ut a few times. Make sure you make some hard corners. (Safely on a road with no traffic of course. Maybe try to take some hard turns in a parking lot. Hard and fast enough to squeal tires.)


Also do some hard breaking. All this is just like you would wanna drive any other used car. You really wanna stress it to make sure its all solid. Also before anything check the coolant to make sure theres no oil in it. If there is that could mean theres cracks in the block.

At the end of the drive shut it off and start it again (test is for hot start) really hard hot starts are a common problem for rx8s.

Finally dont forget to check the tires, rotors, and brake pads. If theres a lip on the rotors just below the break pads they might need to be replaced.

Oh and if he says theres been no body repairs every door, quarter panel, hood, ext should have the same vin thats on the dash.

Ive only had my 8 for about a year so everyone here can feel free to critique what i said. These are just the things i do. And if all that stuff i listed is solid. Thats a great deal.

I got a 2008 40th AE last year. It was in practically mint condition with 38k miles and i paid about 16k for it. Probably a lot more than i should have. But again its in nearly perfect condition so i shelled out the extra. Good luck on your buy and post pics if you decide to get it.

RX8Soldier

iTrader: (24)

What Steve said.
Plus, read the new and potential owners thread.

NavyScubaSteve

Someone may have already said this. May be motor mounts. If memory serves this is how to test for motor mounts.
Driving down the road at 30mph in 3rd gear at 3k rpm. Quickly shift down to 2nd gear. If you feel this violent shaking. (NOT VIBRATING) but shaking. Your motor mounts are bad. Now this is what i remember could be slightly wrong.

Also, visually inspect the motor mounts to see if the rubber is worn or broken. And check at your local mazda dealer. Ive signed up for a newsletter and i get cupons for free inspections all the time. Almost any inspection they do they will tell you if the motor mounts are bad. Hope this helps!

SpaceCaptainSteve

For what it's worth the shaky idling with a vibrating shifter at around 1.5k rpm when cold started is pretty normal. My S2 does it and most other people I've talked to have the same experience. I thought it was weird too when I was new to the rotary world but at the end of the day my car is healthy and pulls hard. Pretty positive this is ECU at work to warm the oil up / prevent the car from flooding in case of a shutoff while not damaging the motor with hard revs. Mazda even recommends a constant 3k or less rev before shutdown if you aren't fully warmed up.

mazdafan1892

Cold Compression test results

Rotor #1 5.2.5.3.5.3

Rotor #2 6.4.6.5.6.5

Chrishoky

iTrader: (9)

You need to post the starter speed with this, without that these mean nothing.

mazdafan1892

The customer sheet doesnt mention anything about starter speed. However I did get a new starter last year and the car takes like between 5-10 seconds to start. I say 5 but its hard to tell with the winter weather, which doesnt help starting.

Chrishoky

iTrader: (9)

That doesn't really help. In order to get proper compression result you need the starter RPM. Can you upload the sheet they provided? Was this done at a Mazda dealer?

mazdafan1892

Yes this was done at the dealer but there was no starter rpm. Why didnt they include that if they have rotor #1 and rotor #2 cold compression results? I am calling them back today though. Will update.

RX8Soldier

iTrader: (24)

What will you update? That your failing engine is failing?
Read the new owners sticky under the compression section and see for yourself that your failed engine has failed.

mazdafan1892

Relax dude I know already its failing, the dealership told me but just trying to understand more. You asked me about the starter rpms. Maybe get a idea how long I have. I was on the way home tonight and had to make a stop it took 5 tries to get my car to start. I am going to sell my car IF Mazda doesnt fix it. Thats a whole other story. However its freaking winter(just my luck), expecting a freaking blizzard tonight. So I am screwed at the moment.

Anyways I called Mazda and they said the rpm's of the starter was around 225-230s I believe.

gwilliams6

Relax folks ,this is the NO sarcasm allowed thread ,remember.

mazdafan1892

Is it possible a Mazda rx-8 can have electrical issues and the engine could be fine? My compression is coming in a failing zone but the car only has 65k mi on it and the engine was changed before. Something seems fishy. I am thinking the purge valve but Mazda said "they tested it". Never got ohm readings on it cause they tested it for free.

RX8Soldier

iTrader: (24)

Why are you thinking purge valve...

And unless you have a failing starter, then no, electrical issues wouldn't cause low compression.

Reman engines are notorious for failures. There's info all over the forum regarding that. Reread the new owners stickies.

Jose_curiel1

How can i post a problem?

RX8Soldier

iTrader: (24)

If you're new, read the announcements in the new members forum.
You must have 10 posts and 30 days.
However, you can post any problem in the new members forum. Just make sure you do some research on the subject prior to making a thread.

mazdafan1892

I never said it was a re-manufactured engine. "supposedly" Mazda says the car had the engine changed to a new engine in like 2010ish. So within 6 years the car is breaking down...? Sounds strange. Anyways I am checking one more thing before I give up and sell it. The fuel injectors. I was doing some research and I believe I even READ IT on one of the STICKYS here that the fuel injectors could be a issue. Plus I mentioned earlier that Autozone said much earlier in the year the car sounds like its trying to get gas. I just wonder how much it would cost for Mazda to only check it.

Salmonella_6

I kind of did a quick look over your problem. Is your engine dying after reaching operating temperature and having a hard time restarting? It sounds like it is not getting enough gas. One problem that is often overlooked and I found out after having my engine rebuilt my car continued to died after running for a while. It turns out is was the big fan to be the fault. The cooling fan on the drive side had a short and was failing. I replaced that fan and everything ran great. I honestly do not think my engine needed rebuilt.

mazdafan1892

My car runs fine, the car doesnt stall or any thing but there is hesitation, shaking at a light esp if if I take off and dont warm it up. But I took it to the dealer and they said it had bad compression. I would like to get the fuel injectors tested. But the other big sign is if I have the car on for a bit 10-15 min and I try to turn it on again it wont start until it cools off. Like 10min. Its that what you experienced? Could that affect the compression. I dont know about the compression but IF a fan is a contributor could that be the reason? Btw which fan was that exactly?

* Thanks for the reply though I appreciate it.

gwilliams6

BTW Mazdafan1892 your engine is a remanufactured engine. All replaced Mazda Renesis engines were remanufactured engines using new internal parts but with mostly used but good housings. The quality of these remanufactured engines varied widely, some good some bad.

antimatter

I have an 04 RX8 GT

I know very little about cars. However I am a machinist, engineer and assembly/dis-assembly technician at an engineering company. I have access to mills, lathes, other tools, balancing machines, etc. You name it, we got it. Am I technically apt? Since I know nothing about cars? Would I need to re-balance the rotor assembly?

Only thing I don't have is time. If I were to rebuild my engine, realistically how long would it take/should I undertake it myself? How much would it cost to do it myself? I work 40 hours/week and go to the gym 3 days per week. I do like to enjoy my weekends somewhat though. Slaving 12 hours per day on the weekends is not going to happen

RX8Soldier

iTrader: (24)

It could take you anywhere from a few weekends to a few months. Realistically, you should read the engine removal and teardown threads to get an idea. Break it down into what you think you can do.
Asking people on the internet for advice based on your personal skills, which we know nothing about, isn't going to get you the most accurate response.