Apex Seals
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Apex Seals
Okay... first of all, assuming the engine was properly maintained before I got it and while I had it, and that it still ran when I parked the car. Should I have to worry about this type of wear at 180K miles? It's a 12A, The OMP still works well as it burned 1 quart per 2000 Miles.
Secondly, what type of apex seals are the best on a rebuild? The engine will see some spirited driving and a lot of street driving, so probably nothing over 8k RPM, adn even then, not for long at all?
I've seen that Hurley sells their own special Long Life seals (Tapered at the end), I think Atkins has thier own variety, and Mazdatrix sells stock seals.
I think I've asked this before, but couldnt find it in a search.
EDIT: WOW... Hurley has modified all three types of rotor seals. Are any of these any good?
http://www.hurleyrotary.com/
Secondly, what type of apex seals are the best on a rebuild? The engine will see some spirited driving and a lot of street driving, so probably nothing over 8k RPM, adn even then, not for long at all?
I've seen that Hurley sells their own special Long Life seals (Tapered at the end), I think Atkins has thier own variety, and Mazdatrix sells stock seals.
I think I've asked this before, but couldnt find it in a search.
EDIT: WOW... Hurley has modified all three types of rotor seals. Are any of these any good?
http://www.hurleyrotary.com/
Last edited by Pele; 04-15-03 at 07:33 PM.
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Originally posted by REVHED
Stock Mazda seals will be perfectly fine.
Stock Mazda seals will be perfectly fine.
I'm looking to see if perhaps these modified seals will be any sort of upgrade to the stock ones.
Originally posted by BRealistic
If it ran good when you parked it, why are you rebuilding it?
If it ran good when you parked it, why are you rebuilding it?
I'm actually considering repainting the entire car, so I'll have the engine out to get the engine bay... But I should probably clean the nastiness off and see what the paint looks like in there befrore I do that... May not need the bay painted, and then all I've gotta do is match Mazda K3 Sunbeam Silver Metallic.
Last edited by Pele; 04-16-03 at 09:35 AM.
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Originally posted by Pele
I forgot to mention I'll have it street ported. Also, I know a lot of people use stock Mazda seals... That's what the car came with... It also came with a cast iron exhaust manifold and pellet style catalytic converter... Those do their job too...
I'm looking to see if perhaps these modified seals will be any sort of upgrade to the stock ones.
I forgot to mention I'll have it street ported. Also, I know a lot of people use stock Mazda seals... That's what the car came with... It also came with a cast iron exhaust manifold and pellet style catalytic converter... Those do their job too...
I'm looking to see if perhaps these modified seals will be any sort of upgrade to the stock ones.
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Originally posted by REVHED
Put it this way, there are a lot of experienced engine builders who specify the stock seals for high hp turbo engines. So why spend money on a "gimmick" that is probably inferior anyway.
Put it this way, there are a lot of experienced engine builders who specify the stock seals for high hp turbo engines. So why spend money on a "gimmick" that is probably inferior anyway.
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I would use steel seals for anything below a bridgeport. I did bridgeport and used carbon seals with pre-mix with 20,000+miles on the seals, but are not meant for boost or light driving. They are intended for high rpm, high-load situations because low rpm causes carbon build up on the rotor tips and causes the carbon apex seal to stick. The other advantage is they don't cause damage to the housing when the break and they are light weight and don't bounce like steel seals do at 6200rpm+. Infact they seal best above 7000rpm. They are also cheaper then stock seals. One is $30/12a seal.
So if you were going to race this engine all the time or drive spirited all the time, and went to porting greater then a streetport, go carbon, otherwise steel seals are best in my opinion.
So if you were going to race this engine all the time or drive spirited all the time, and went to porting greater then a streetport, go carbon, otherwise steel seals are best in my opinion.
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Originally posted by WackyRotary
I would use steel seals for anything below a bridgeport. I did bridgeport and used carbon seals with pre-mix with 20,000+miles on the seals, but are not meant for boost or light driving. They are intended for high rpm, high-load situations because low rpm causes carbon build up on the rotor tips and causes the carbon apex seal to stick. The other advantage is they don't cause damage to the housing when the break and they are light weight and don't bounce like steel seals do at 6200rpm+. Infact they seal best above 7000rpm. They are also cheaper then stock seals. One is $30/12a seal.
So if you were going to race this engine all the time or drive spirited all the time, and went to porting greater then a streetport, go carbon, otherwise steel seals are best in my opinion.
I would use steel seals for anything below a bridgeport. I did bridgeport and used carbon seals with pre-mix with 20,000+miles on the seals, but are not meant for boost or light driving. They are intended for high rpm, high-load situations because low rpm causes carbon build up on the rotor tips and causes the carbon apex seal to stick. The other advantage is they don't cause damage to the housing when the break and they are light weight and don't bounce like steel seals do at 6200rpm+. Infact they seal best above 7000rpm. They are also cheaper then stock seals. One is $30/12a seal.
So if you were going to race this engine all the time or drive spirited all the time, and went to porting greater then a streetport, go carbon, otherwise steel seals are best in my opinion.