New Yorker

…will we have to break them in as if they were brand new? The whole 600 mile not-revving-over-a-certain-RPM break-in??

dillsrotary

definitely

TKE

Only if you want to.

Ike

Nah, because they don't actually give you a new engine

hitman408

Does the odometer get reset? My feeling the recall will really just affect auto in hot climates. Seems most of the problems on this forum is for auto.

Tamas

iTrader: (1)

No.
Why would it? Has nothing to do with the engine.

hitman408

I was just wondering, never had a engine replaced .

Stavesacre21

Well, if they WHOLE engine block is replaced, I wouldn't see any reason why you wouldn't. The reason engines have a break-in is specifically for block/rotor as opposed to any other subsystem.

Ike

But people will be getting remans so who knows what has or hasn't been done to it.

Raptor2k

It's funny how so many owners are expecting their engines to replaced.

Stavesacre21

this is sad too....it really is.

rotarygod

First for the long answer. Even a remanufactured engine needs to get broken in. They may use the same housings and plates but the seals are all knew. If you rebuilt an engine with the same seals but didn't reinstall them in the same place that you got them from, you need to break in the engine again. The only way you wouldn't need to would be if they pulled the engine apart and put everything back exactly where they got them. This means every seal in the exact same groove that it came out of facing the exact same direction. At this point, there was very little use rebuilding it.

The short answer is yes. Break it in.

rotarygod

I agree. It's going to be so few overall that most won't even realized the whole ordeal ever happened.

Ike

Any idea what a typical reman would have done to it? For instance, all the engines that have been replaced in hot climates, what are they going to have to do to them to make them "good" again? Are they simply replacing the seals or is there more to it?

ken-x8

When a rotary engine is rebuilt, does the housing get honed or overbored? If overbored, is the rotor replaced with a larger one?

Just thinking of the analogy with a piston engine. In a true rebuild, cylinders are bored out, crank journals reground, and the mating parts (pistons and bearings) replaced with the corresponding new sizes.

Ken

swoope

iTrader: (5)

a lot more to it..

beers

86rx7

no, housings are checked and either kept or replaced.

spotster20

See my post on if you love your 8.. Has updated info on recall.. Plus no they don't reset the odometer.. They do however by law have to put a sticker some where on your car(usually in the door frame) saying the engine was swapped at whatever mileage your car is at.. So, you will have proof and makes a good selling point.. But very very few people with get engine swaps.. Most with be fix with some new software..

JeRKy 8 Owner

Why are members on here under the impression that "new engine" and "rebuilt engine" are synonymous?

ken-x8

I can't vouch for the impressions of others, but if properly done a rebuilt engine will be just as good as a new engine. Possibly better, since the castings are seasoned.

That's if properly done, of course. Not so if an engine presented as rebuilt is really just overhauled.

Ken

1.3L

I'm not sure if the automotive world thinks this way, but there are basically 3 types of aviation engines; new, remanufactured and overhauled. A new engine is, of course, new. In a remanufactured engine, every part meets factory-new tolerances, regardless if it is a new part or used part. Also, in a reman engine, parts that have time limits (calendar or operating hours) are replaced regardless of how well they measure out. An overhauled engine may require some new parts during the overhaul, but it will likely have some parts that fall within the allowable wear limits. Allowable wear limits are not the same as factory new tolerances.

I think one could conclude that the first 2 engines will likely run to their expected TBO (time between overhaul) with little or no problems, but the overhauled engine might have some parts go beyond wear limits before reaching the same number of hours as the new and reman engines. So, the overhauled engine will likely need major work sooner than the first 2 engines.

1.3L

CarAndDriver

If I read one of the reports right, some owners will actually get brand new Mazda engines. Mazda put some new RX-8 engines in the inventory pipeline to get a good number ready to install. I guess if you have to get a new engine, hope for a brand spanking new one instead of a reman one.

I hope my 11.5K mile engine doesnt get replaced.

The Final Lap

I have a 2005 that is in the shop here in Vegas getting a new motor. It went in for stalling and a clicking noise and the dealer called yesterday to say they had ordered the new motor from Mazda and it will take 7-10 days to get here. They told me they are replacing with a new motor and it should be stronger than the original. My car only had 21000 miles on it.

kartweb

A little insight on Mazda Reman motors.

Housings, Eccentrics, Oil Pans are re-used if possible. Just about everything else is new including Rotors and Gears. It costs more to clean up and check to spec let alone any machining/resurfacing then it does to just pull new parts off the line.

Thats one of the beauties of a rotary - they're relatively inexpensive to build.