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Old 10-10-2003, 05:21 PM
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oh..is it na only?...
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Old 10-10-2003, 06:01 PM
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Originally Posted by BigWoogie' date='Oct 10 2003, 06:18 PM
[quote name='FrestyleFC3S' date='Oct 10 2003, 02:06 PM'] whats the diff?



im deciding whether or not to use them after my port
I believe he is referring to the sleeve found in N/A rotor housings only, if im not mistaken. [/quote]

NO!!! All rotaries have the sleeves in the exhaust. N/a's have the diffusers int he sleeve. I removed my sleeves. Look at the exhaust port pic again.
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Old 10-10-2003, 06:10 PM
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Originally Posted by mazdaspeed7' date='Oct 10 2003, 07:01 PM
[quote name='BigWoogie' date='Oct 10 2003, 06:18 PM'] [quote name='FrestyleFC3S' date='Oct 10 2003, 02:06 PM'] whats the diff?



im deciding whether or not to use them after my port
I believe he is referring to the sleeve found in N/A rotor housings only, if im not mistaken. [/quote]

NO!!! All rotaries have the sleeves in the exhaust. N/a's have the diffusers int he sleeve. I removed my sleeves. Look at the exhaust port pic again. [/quote]

thats what i thought



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Old 10-16-2003, 01:35 PM
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man. That's the kinda port I want for my soon to be 84 GSL-SE. I have an extra 88 6-port that I want to swap in. I think I'm gonna have to tear it apart and do some porting now.
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Old 10-16-2003, 05:57 PM
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[quote=pk797' date='Oct 8 2003, 10:56 AM]
It's having some idling issues but those are so easy to fix compared to a pinched coolant seal!



Is that what it turned out to be?

How did you finally find out?

Was it leak into both rotor housings or just one?

How did it look when you went back in there?



I ask because I think I may have a similiar problem.
Sorry I didn't reply to your question a couple weeks ago . . it's probably too late but just in case, I could tell that the coolant seal was the problem because one was ruptured completely through the teflon, exposing the inner silicone O ring, which allowed coolant and exhaust gasses to change places and go where they weren't supposed to. Two others were mildly pinched, but not through, on the inside edge. None of the seals fit well when I first put them in.



I used the "teflon encapsulated (reusable) coolant O rings", available through Rotary Aviation, Atkins Rotary, and you might be surprised to learn that my replacements came from McMaster-Carr (mcmaster.com) and cost $45 shipped for 4. These directly sourced replacements fit MUCH more exactly than the ones Rotary Aviation sent me; I had to **** with the first set for a while to get them in (resulting in one jumping out during final assembly and getting pinched), while the Mcmaster ones fit _perfectly_ .



If anyone wants the Mcmaster part number, let me know. And they continue to seal perfectly as of three weeks and ~460 miles. My coolant tank level has been right where I left it when it was filled and had the initial bubbles burped out. And of course, no more fog machine!
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Old 10-16-2003, 06:15 PM
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Originally Posted by FrestyleFC3S' date='Oct 10 2003, 03:10 PM
[quote name='mazdaspeed7' date='Oct 10 2003, 07:01 PM'] [quote name='BigWoogie' date='Oct 10 2003, 06:18 PM'] [quote name='FrestyleFC3S' date='Oct 10 2003, 02:06 PM'] whats the diff?



im deciding whether or not to use them after my port
I believe he is referring to the sleeve found in N/A rotor housings only, if im not mistaken. [/quote]

NO!!! All rotaries have the sleeves in the exhaust. N/a's have the diffusers int he sleeve. I removed my sleeves. Look at the exhaust port pic again. [/quote]

thats what i thought



[/quote]

Mazdaspeed7, how did you go about removing those sleeves? arent the press fit in?
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Old 10-17-2003, 10:35 AM
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Cool good looking out, but I think my problem maybe some epoxy that I used on one of the intake ports. I know everyone swares by the J.B. weld, but I'm starting to think thats what it is. Because everything else went in clean-no problems with any of my factory new seals-notha.. I'll find out this weekend when I take it back out. Sucks I hat taken out TII's.
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Old 10-17-2003, 03:38 PM
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Originally Posted by BigWoogie' date='Oct 16 2003, 07:15 PM
[quote name='FrestyleFC3S' date='Oct 10 2003, 03:10 PM'] [quote name='mazdaspeed7' date='Oct 10 2003, 07:01 PM'] [quote name='BigWoogie' date='Oct 10 2003, 06:18 PM'] [quote name='FrestyleFC3S' date='Oct 10 2003, 02:06 PM'] whats the diff?



im deciding whether or not to use them after my port
I believe he is referring to the sleeve found in N/A rotor housings only, if im not mistaken. [/quote]

NO!!! All rotaries have the sleeves in the exhaust. N/a's have the diffusers int he sleeve. I removed my sleeves. Look at the exhaust port pic again. [/quote]

thats what i thought



[/quote]

Mazdaspeed7, how did you go about removing those sleeves? arent the press fit in? [/quote]

You have to drill out the roll pin, or otherwise get it out, and then the sleeve comes out. If can only be done with the engine apart, and its a pain in the *** at that.
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Old 10-19-2003, 12:27 AM
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Thats a beautiful porting job Mazda speed, with all the intrest you should go into buisness and port for people.



That exaust port is quite large, wha are the timmings?, and does it idle smoothly with that much overlap?
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Old 10-19-2003, 12:40 PM
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I wouldnt mind building motors for people, but Im not going to go out of my way to try to find customers. If someone comes to me asking me to build a motor, Ill do it. But Im not looking to make a living out of it.



I dont remember the specs of the exhaust port, but it does idle fine. Its not as smooth as a less ported motor, but this motor is idling at 600 rpm with the 6 ports closed, and the VDI wired on the high rpm setting. It holds a steady 600 rpm, but just not quite as smooth as a stock motor. The car is easily every bit a drivable as a stock car, possibly more.
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