anyone running the new 2pc mazda seals on there rebuild?
Rotary Enthusiast
Joined: May 2003
Posts: 912
Likes: 1
From: Norway
Did run another 160 miles today and started to go upp the rpm range 
. And boosting alittelbit. It feels very good.
The vacume is about 500 mm/hg.
Did not have time for a compression test, will do tomorrow. i only have a poor mans compresion tester so will not be acurate.
But it looks fine, no white smoke or blue smoke.
Oh and i stopped my small oil leak after the rebuild.
. And boosting alittelbit. It feels very good.The vacume is about 500 mm/hg.
Did not have time for a compression test, will do tomorrow. i only have a poor mans compresion tester so will not be acurate.
But it looks fine, no white smoke or blue smoke.
Oh and i stopped my small oil leak after the rebuild.
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Senior Member
Joined: Jun 2001
Posts: 599
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From: Austin, TX
I have a set of them in my engine as well.
Nobody knows exactly the material they are made of (Mazda Motorsports won't say).
Nobody knows exactly the material they are made of (Mazda Motorsports won't say).
Originally posted by t-von
I stand corrected. I naturally assumed those pics of the Rx8 seals were the same as the ones being used in the older 13b engines. I guess since the renesis has a higher rev limit that shorter lighter seals are neccessary to properly seal at higher rpms. By the way, anyone know whats the material used in the new seals?
I stand corrected. I naturally assumed those pics of the Rx8 seals were the same as the ones being used in the older 13b engines. I guess since the renesis has a higher rev limit that shorter lighter seals are neccessary to properly seal at higher rpms. By the way, anyone know whats the material used in the new seals?
Senior Member
Joined: Jun 2001
Posts: 599
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From: Austin, TX
Rotary Aviation does not produce the seals, they get preferential pricing from Hurley in Great Britain.
If you look closely at the site, you will find a [bad] picture of me in their rotary powered plane. *THAT* was an awesome ride
~John
If you look closely at the site, you will find a [bad] picture of me in their rotary powered plane. *THAT* was an awesome ride
~John
Originally posted by marcus219
http://www.rotaryaviation.com/apex_seals.htm
What about these? From the wording they use, it sounds like Rotary Aviation produces the seals, not Mazda. Anybody used em'? There well priced.
-Marc
http://www.rotaryaviation.com/apex_seals.htm
What about these? From the wording they use, it sounds like Rotary Aviation produces the seals, not Mazda. Anybody used em'? There well priced.
-Marc
I talked to the builder and he speced it out at .007 for clearance. Maybe he should have tightened it up a bit. Looks like I am going to break this motor in. Pick it up Fri will drive it home and see hwo it feels.
...
Joined: Aug 2001
Posts: 7,539
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From: Tampa, FL
Originally posted by JBurer
Rotary Aviation does not produce the seals, they get preferential pricing from Hurley in Great Britain.
Rotary Aviation does not produce the seals, they get preferential pricing from Hurley in Great Britain.
After over two years of intensive development efforts, we are announcing the availability of new, heat treated alloy apex seals. These seals offer 700% more bending strength and are 33% harder than the current after market competitors (Atkins and Hurley).
One of the main reasons for developing this product is to correct a problem seen in other seals - the tendency for them to develop chipped corners, especially under severe conditions such as detonation in turbo applications. Even though these new seals are harder, they are much less brittle than previously developed products.
We have about 4000 miles of testing on two turbo charged RX-7 cars, one of which was inadvertently run into severe detonation without any apparent affect on the seals. Testing is still in the early stages so at this point we are NOT recommending them for use in aircraft.
Senior Member
Joined: Jun 2001
Posts: 599
Likes: 0
From: Austin, TX
Interesting. If that's what the site says then I stand corrected.
I'll have to ask them about this when we talk next. They didn't mention anything about it last time!
~John
I'll have to ask them about this when we talk next. They didn't mention anything about it last time!
~John
Originally posted by Ryde _Or_Die
Are you talking about the new ones? Or the old ones? The new ones I thought were produced by them, themselves. From their site:
After over two years of intensive development efforts, we are announcing the availability of new, heat treated alloy apex seals. These seals offer 700% more bending strength and are 33% harder than the current after market competitors (Atkins and Hurley).
One of the main reasons for developing this product is to correct a problem seen in other seals - the tendency for them to develop chipped corners, especially under severe conditions such as detonation in turbo applications. Even though these new seals are harder, they are much less brittle than previously developed products.
We have about 4000 miles of testing on two turbo charged RX-7 cars, one of which was inadvertently run into severe detonation without any apparent affect on the seals. Testing is still in the early stages so at this point we are NOT recommending them for use in aircraft.
Are you talking about the new ones? Or the old ones? The new ones I thought were produced by them, themselves. From their site:
After over two years of intensive development efforts, we are announcing the availability of new, heat treated alloy apex seals. These seals offer 700% more bending strength and are 33% harder than the current after market competitors (Atkins and Hurley).
One of the main reasons for developing this product is to correct a problem seen in other seals - the tendency for them to develop chipped corners, especially under severe conditions such as detonation in turbo applications. Even though these new seals are harder, they are much less brittle than previously developed products.
We have about 4000 miles of testing on two turbo charged RX-7 cars, one of which was inadvertently run into severe detonation without any apparent affect on the seals. Testing is still in the early stages so at this point we are NOT recommending them for use in aircraft.
