I need help
#3
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Hmm, there was a thread earlier this year from a person who bought a rebuilt engine from someone and the rotor housings were switched and he had a lot of difficulty in passing smog
#4
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ONLY if you have to pass emissions. If the rotor housings are switched, there is no path for the PORTAIR to go to from the ACV. We went through this with JRAT when he couldn't pass emissions. Turned out he had switched housings. I have a spare set laying around and examined what would happen if they were switched. The path for the PORTAIR is effectively blocked. If I remember right the path for the EGR was effected also. Not sure about that one.
#6
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Yeah, it was me...The housings were swapped so the motor wouldnt pass emissions. Also it ran REALLY rich. I dont know if that has anything to do with it. You may want to consider swapping the housings.
Rat
Edit: I just noticed you are in Cali...Not a good place to have a car that doesnt pass emissions. Unless you have some "friends" that will pass you.
Rat
Edit: I just noticed you are in Cali...Not a good place to have a car that doesnt pass emissions. Unless you have some "friends" that will pass you.
Last edited by J-Rat; 08-12-02 at 08:47 PM.
#7
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Swapping the housing can be expensive. I'd only do that if I had to pass emissions each year. If you do have to pass emissions, then by all means put them where they belong, because its that or bust your ***** trying to pass emissions. It would be like trying to pass emissions without the air pump.....almost. Still would have split air, but that only happens when the throttle pedal is depressed. No worky at idle. Cheeze, lot of dough to take it apart and put it back together. Say bye bye expensive black speghetti(sp, I ain't got time) orings.
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#11
The Addiction of Wankel
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while everyone, as you know i do live in cali and i do have to pass emissons test so i'll send it back to mazda recycling where they will fix it on their budget and give a good motor.l
P.S. I asked mazda recycling if this mattered and they said it didn't.
Thanks for the help
P.S. I asked mazda recycling if this mattered and they said it didn't.
Thanks for the help
#12
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It does make a difference and if you need a explanation I can provide it. Maybe not coherent, but an explantion. The acv supplies air from the airpump to the exaust ports. It enters the exaust ports at the diffuser that is pinned in each exaust port.
The path for the air is from the airpump, to the acv, out the acv thru that silver dollar size checkvalve in the intake manifold, thru the intake manifold and out the intake manifold into the top of the rear side housing(very last plate on the engine). It enters that rear side housing thru the rectangular hole and follows a internal path down to the bottom of that housing, where the air exits a triangular hole that faces the rear ROTOR housing which has a similar triangular hole to match the rear side housing. Now if the rear rotor housing is truly a rear rotor housing, there will be two holes in that trangular hole. One leads directly towards the exaust manifold where it is blocked by the exaust gasket, and the other passage it to the rear exaust diffuser where the air mixes with the exaust gas.
Now if you put a front rotor housing where there should be a rear rotor housing, you find that that trangular hole in the rotor housing has but ONE passage instead of two. That passage goes straight into the exaust manifold gasket where it is blocked by the gasket material. The other hole does not exist. The one that should have gone to the rear exaust diffuser i.e. no fresh air being fed to the exaust.
I described the path to the rear rotor housing diffuser. The path to the front rotor housing diffuser is similar.
The path for the air is from the airpump, to the acv, out the acv thru that silver dollar size checkvalve in the intake manifold, thru the intake manifold and out the intake manifold into the top of the rear side housing(very last plate on the engine). It enters that rear side housing thru the rectangular hole and follows a internal path down to the bottom of that housing, where the air exits a triangular hole that faces the rear ROTOR housing which has a similar triangular hole to match the rear side housing. Now if the rear rotor housing is truly a rear rotor housing, there will be two holes in that trangular hole. One leads directly towards the exaust manifold where it is blocked by the exaust gasket, and the other passage it to the rear exaust diffuser where the air mixes with the exaust gas.
Now if you put a front rotor housing where there should be a rear rotor housing, you find that that trangular hole in the rotor housing has but ONE passage instead of two. That passage goes straight into the exaust manifold gasket where it is blocked by the gasket material. The other hole does not exist. The one that should have gone to the rear exaust diffuser i.e. no fresh air being fed to the exaust.
I described the path to the rear rotor housing diffuser. The path to the front rotor housing diffuser is similar.
#13
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Tell 'em to just think about it. Why do the front and rear rotor housings have two seperate part numbers??????? Ain't because one is purttier that the other. You'll notice no difference in appearance, unless you look at the bottom right side of the housings at the trangular hole I mentioned that faces the rear side housing. On the rear of the rear rotor housing you'll see that the triangular passage has two outlets, but if you look at the trangular hole on the front of the rear rotor housing you'll see there is but one outlet. Swap housings and you get a blockage to the diffusers.
#14
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OMFG! Mazda Recyclers AGAIN!!?!?!
Originally posted by riptyde
while everyone, as you know i do live in cali and i do have to pass emissons test so i'll send it back to mazda recycling where they will fix it on their budget and give a good motor.l
P.S. I asked mazda recycling if this mattered and they said it didn't.
Thanks for the help
while everyone, as you know i do live in cali and i do have to pass emissons test so i'll send it back to mazda recycling where they will fix it on their budget and give a good motor.l
P.S. I asked mazda recycling if this mattered and they said it didn't.
Thanks for the help
Jesus! Somene really needs to go over to Mazda Recyclers and straighten them out!
Rat
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Didn't these guys screw one up before? I have never checked to see if this is possible; I COULD BE FULL OF ****; but could they be using 2 front rotor housings to compensate for a lack of usable rear housing cores?
#17
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Originally posted by banzaitoyota
Didn't these guys screw one up before? I have never checked to see if this is possible; I COULD BE FULL OF ****; but could they be using 2 front rotor housings to compensate for a lack of usable rear housing cores?
Didn't these guys screw one up before? I have never checked to see if this is possible; I COULD BE FULL OF ****; but could they be using 2 front rotor housings to compensate for a lack of usable rear housing cores?
Rat
#19
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Originally posted by banzaitoyota
Sorry to hear that Rat!
Sorry to hear that Rat!
Lesson learned. Its still a decent motor, its just worthless to me since I live in Tucson Metro which means that I have to get emissions done all the time. Someone here on this site will post needing a running motor soon, and I will sell it to them for cheap. Swapping the housings will not gain or decrease performance. It just screws us in guys in emissions states.
Rat
#20
The Addiction of Wankel
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J-RAT, i called back up there after getting the info from you guys and they told me they wouldn't take it back either, then i talked to Jeff, the guy who sold me the engine, and he said that i could trade it in for a correctly rebuilt motor.
#21
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Originally posted by riptyde
J-RAT, i called back up there after getting the info from you guys and they told me they wouldn't take it back either, then i talked to Jeff, the guy who sold me the engine, and he said that i could trade it in for a correctly rebuilt motor.
J-RAT, i called back up there after getting the info from you guys and they told me they wouldn't take it back either, then i talked to Jeff, the guy who sold me the engine, and he said that i could trade it in for a correctly rebuilt motor.
Edit: I am glad that you are getting your motor replaced though! I am just a little bitter, since I had to buy 2 motors for my car. I have the motor they sold me, but it just sits in my garage. Has about 1000 miles on it...Worthless....
Rat
Last edited by J-Rat; 08-14-02 at 05:01 PM.