Renesis 8,5k+ RPM. What Apex Seals and Life-Span??
04-04-02, 02:20 PM
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Renesis 8,5k+ RPM. What Apex Seals and Life-Span??
What kind of Apex Seals does the Renesis engine have? The redline is 9.000-10.000 RPM right? Steel Apex Seals wouldn't be good and Carbon Seals last for like 20k Miles. Ceramic Seals??
What would the life-span of the engine be?
What would the life-span of the engine be?
04-04-02, 02:53 PM
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It is not fully carbon. It is mixed with aluminum and other materials. The seal should last well over 100,000+ miles if taken care of....non-modified car.
Now...where did you get that ideal that it would only last 20k.....are you smokin' something?
Redline will be set @ 8000. It might raise on the production cars....it is unknown at this time.
Now...where did you get that ideal that it would only last 20k.....are you smokin' something?
Redline will be set @ 8000. It might raise on the production cars....it is unknown at this time.
04-04-02, 03:00 PM
#4
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General wisdom is that the carbon-aluminum apex seals will only last about 20k on a street/race car.
I don't see why Mazda can't use the current 2mm 3pc iron apex seals, they can handle the RPM. It's the larger seals (3mm) that cannot be revved high.
I don't see why Mazda can't use the current 2mm 3pc iron apex seals, they can handle the RPM. It's the larger seals (3mm) that cannot be revved high.
04-04-02, 04:36 PM
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5yr member, joined 2001
I don't understand why they don't use titanium alloy seals. Perfectly smooth, won't chip or break, lightweight, forever in an aluminum housing. They just cost more.
04-04-02, 05:58 PM
#6
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Titanum galls VERY easily. Having worked in a bike shop, the number one rule with titanium is you very liberally slather it with grease or anti-sieze if you don't want it to gall! ESPECIALLY when dealing with aluminum and titanium in direct contact. (BTW rotor housings may be aluminum but they are lined with chrome-plated steel)
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11-20-02, 08:11 PM
#8
I think they should go with 2 peice 2mm ceramics myself. You would have excellent sealing quality at all rpm's and a much longer life span. I know ceramics may seam like overkill for a NA engine but, Mazda needs to do whatever is nessecary to make sure the Renesis is extremly reliable. Also ceramics in a mass produced rotary should be alot cheaper to produce. They are already saving money not offering a turbo charged version. Think about this, 300k plus miles out of a high performance rotary would be ******* insane.
11-22-02, 11:04 AM
#9
The factory likes to add $1000 for a $100 CD Player I'd hate to see what they would charge extra for anything different inside an engine. Even if it was cheaper to make the seals somehow I don't think they would tell us that especially if they last longer. I don't believe in overkill
11-22-02, 11:40 AM
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shouldn't the regular 2mm 3pc seals work better in the renisis because they are supported all the way around (no exhaust hole)?
mike
mike
