this is a wierd illness... it'll like come and go as it pleases, extreme fatigue, nausea, haven't yacked yet, but the night is still young.. i can't eat, i can't sleep. i'm in bad shape!!

but i cleaned up the side housings, so they're done . too dark to take good pics today so i'll try to get some up tomorrow.

 

About how much does one of these rotary engines weigh?

 

92 lbs. Just short of an LS1. Displacement is 1.3L btw.

 

Alright well here is my shopping list...

1. 4 qts of oil (check)
2. Coolant (still don't know what to get, am in the process of contacting Mazda)
3. A new clutch. Is there a brand people recommend or does the stock one do great by itself?

That's it I think, add stuff to it Dave if you need other things. Also when do I need these things by. I could probably run up the oil and coolant if I had those 2marow.

Any help about the other stuff wouyld be greatly appreciated

 

If I were to buy a clutch, I would probably buy racing beat or the new mazdaspeed.

 

spark plugs maybe.. we could recycle your current ones for the break-in period, but i want to replace them before we dyno it.

now if you'll excuse me gentlemen, i'm going to go throw my guts up.
be well

 

Oh yeah 4 spark plugs too. The racing beat isn't out yet...

 

i'm not sure what youre budget is like, but if it's tight, we could probably get away with reusing the pressure plate and just replacing the disk and release bearing. it didn't look too bad and the pedal feel was still fine when i drove the car. whatever you want to do on that one.

i started feeling a little better and i was able to eat something. happy happy joy joy. i think i may still be able to get the motor back together tomorrow night just as long as the parts get here in time. anyone wanna come over and hang out while we put it back together?

 

stomach flu is always better after you puke.. hope you guys get everything done. i'm waiting patiently for your results and I hope you've documented them well as I plan to take them to one of our tuner shops here.

 

You can probably just print up the whole thread and that's the documentation. hehe jk

Yeah and I can't find the mazdaspeed clutch anywhere. Are you just screwing with me ajax? Is the ACT the only one out? Someone chime in here.

 

The mazdaspeed is available in japan. It's not here yet unfortunately. ACT clutches are good too. I don't screw around. Don reads the boards, just not on a regular basis.

 

Anyone know where to find oem ones?

 

Thew at Rx8garage (club sponsor) sells the MS clutch.

 

captains log:
earthdate 12/14/04 4:02 am

we have discovered an opposition to flow in the primary ports and a prime opportunity for backfilling.

more later

 

Do you have headaches? Slight dizziness? Starting to sound like the symptoms of sinus-pressure headaches. They come and go when the weatherfront shifts; it corresponds with the changes in atmospheric pressure. The symptoms are everything you described, plus what I described, and a feeling if pressure in your ears, like you swam to the bottom of the deep end of a pool.

If these are your symptoms, try getting Sudafed Sinus Headache. You can get it in the pharmacy section of Von's. I get mine at Costco, or you might try Walgreens if you have one near you. Take a couple of those when the symptoms start to appear and within about 10-15 minutes they'll start to go away. They're a life saver for me.

 

i do get migraines in the spring and summer, but it's heat related most of the time.

i'm feeling tons better today. sleeping 31 out of the last 48 hours tends to help

 

Well those are two interesting developments. Since you quote a date as from a larger veiwing point, Maybe it's a sign from a higher power. Let me tell you why. Harry Weslake, the highly regarded british head designer claimed his instinct for head design developed from his breathing problems as a child. Seems he had some sinus restrictions that took years to cure.

In case you don't know who he was, he worked on many F1 engines but might be most noted for the Ford Weslake heads that were first used by the Gurney F1 cars then at Le Mans. Some found their way to Cobras. They are a rare find today. Not to be confused with the Indy engine which was not a conversion but a whole new engine. If Weslake worked on that it would not supprise me.

So clear up your nose and get some Devcon for those primary ports.

 

nose and sinuses are just fine.... i told you it was a wierd one!

ok, questions/comments/opinions on the primaries before i do this?

the red area is where the epoxy goes. it's almost a dead 90 degree turn there--not good for flow...

blue line is one idea of where the port may or may not end up..

purple is my best try to visualise the "new" path for the airflow....a nice gentle ramp into the combustion chamber.

 

^^use your imagination since i only did the purple lines on half the port...

 

that's something we noticed and talked abotu at 7stock as well. that turn is horrible. i think what you are saying is exactly what we decided when we were looking at them.

 

what i'm debating on right now is should i try to make the upper port wall pretty much a straight line, or more like a bell curve.

i'm sure either one would be better than stock, but may as well go with the better of the two since we have the decision.

 

straight line i think if i am understanding things correctly. but better wait for an answer from some of the more knowledgable folks. dont take my word for it. but i think straight would keep the velocity the same but a bell curve would slow it. again i could be wrong

 

a graduated bell curve seems to work for velocity stacks in the intake world... I don't remember enough fluid dynamics to know how that translates into this project though.

 

I can't picture the thing well since I have never seen one, but my first thought is are you changing the timing by opening that port. If that is not a problem then I would ask myself where do I want this flow to go? Just getting to the end of the port is not enough of an answer, you have the power to direct the stream for a small distance after it leaves the port. This is due to the "stream effect" like the water after it leaves the hose nozzle. Think also how opening the hose nozzle gets more water out but it goes all over the place and doesn't go as far. Close the nozzle and it goes where you want it to.

This would hold true if you had the nozzle with a small curve in it. the stream would continue to follow the curve. Notice I said a SMALL curve.

Use this theory to "aim" your flow. I don't know if the rotor is clear of the port after it passes, but you can consider the shape of the rest of the chamber after the rotor passes. (Now I know others have said it is not rotor it is rotar, but I work with rotors every day and that is all I know.) The rotor is just a wall of the chamber even if it is moving. As I understand it this is one of the problems of this new port location vs the old one. The flow use to flow onto the rotating rotor surface ans would be drawn along by the kinetic energy of the surface of the rotor. Now it is thrown into a open space but hit by the rotating rotor and has to change direction. So use the port shape the aim the flow in the direction of the rotating rotor.

That is how I picture the problem and I may be way off having never looked at one of these things. I'm sure if I'm seeing it wrong I'll get a lesson from our friend RG. Have at it Fred I'm willing to learn.

 

i thought about which way it would be going and here's what i've come up with:

the secondary ports are very limited in options with respect to the direction of the flow... they shoot the air pretty much straight in... i'm working on aiming the exit of the primaries a little closer to the face of the rotor to avoid the air streams colliding mid-chamber. i think there may be enough offset there to twist the air around inside of the combustion chamber.

what i do to test the flow path out is the same thing i do with the other engines i port...

line up the intermediate and side husings about 3" (the width of the rotor housing) apart.. throw a towel or piece of cardboard over the back of the hourings (where the port inlet/outlets are), then throw in some confetti, paper shavings, or whatever i have laying around and throw them inside the ports.

next, i blow some air through each of the ports and watch which way it flows. when i get to the point where the air stream from one port sucks the confetti/paper shavings from the other port into the combustion chamber area, paydirt