R1TT

Has anyone ever used the Hurley Corner seals? the one with the two springs in it, do they work well, what do you guys think about the design? very different from the old spring and the fd spings but I guess it does the same job

Racer X

From what I know of these engines(and Judge Ito can tell you the same thing)is that the OEM replacement internals seam to be the best you can get for these engines.I guess that doesn't say much for the aftermarket but its true.

R1TT

So I take it nobody has had experience with this type of seal?



Racer X I'm quite aware that Mazda's internals should work quite well on a Mazda engine , but as an enthusiast tuner there will always be a strive for better part's which could take more abuse and possibly enhance performance



Now I am not a hardcore rotary engine builder nor do I proclaim myself to be, and it seems like many are moving away from hurley (apex seals), but when you take a look at these new corner seals the bottom edge does seem to prove stronger, does anyone agree? also the design of the spring is in a way totally different, the two older styles are one piece which fit to diameter of the corner seal,

where as the hurley ones are two spring multi coil.

Now to all you hardcore engine builders and guru's out there, looking at the design of the hurley seal would you say the it has a more even push against the corner seal because the spring is on either sides of the seal? Also on the hurley ws there is a pic of the older style and the newer on a rotor, it show's the newer to stick out more, now I know this is not to say that the spring will have a stronger push, but if the spring did have more torsion would there be better sealing ie.better compression?

Is there any advese effect's if the the push of the spring is too hard? perhaps damaging side housings?

I have no idea's that is why I'm turning to the experts for advice, but I do know that sometime's you get gains from certain parts but there are also drawbacks in some case's, sometime's worse then others

Sorry for so many questions, but I just wanna get you guys take on these,and one more thing how about solid corner seal's, what are your experience on them?

thanks guys

Judge Ito

I have had many experiences with Eamon Hurley at Hurley engineering. I had tried there corner seals, side seals, apex seals and the milling they offer for the 3mm apex seals. For the serious rotary engine horse power enthusiast, I have not seen anything better then OEM seals. I have posted so many comparisons on the other forum about Hurley seals vs Atkins seals vs Stock mazda seals that I just don't want to keep repeating myself. I'll basically say that yes, the hurley seals and atkins seals work up to a limit of Exhaust Gas Temperature and detonation. But neither Hurley or Atkins will measure up to stock mazda seals. Example One engine I ported and polished makes continuos 685rwhp to 700rwhp on 36lbs of boost and 175 nitrous oxide shot with every single internal seal being stock from mazda with 2mm 3 piece apex seals. The hurley's and Atkins could not and will not come close to handeling that amount of Exhaust Gas temperature. We just melted the seals, I literally mean MELTED the apex seals and corner seals at high boost and nitrous. Need more convincing?

R1TT

Thank's for the info Judge Ito, so when its time I should stick with stock is what your telling me right, ok cool

Now what is your take on 3mm seals? also 2pc vs 3 pc?

not too much to seach on this forum and the other always give me errors

Also, I know what your opinion is on the hurleys apex seals, but what about the double spring corner seal design? if its the materiels that make these seals bad ok, but what about there spring design?

What do you honestly think about the spring setup?

is it true about lost compression with solid corner seal designs?

Sorry about the mad firing off of the questions, I just wanna make sure when I do my motor it will be solid

Hopefully someone from Japan can tell me more about those other seals, I mean hurley is british right? Mazda=Japan

perhaps a better seal one that can exceed factory may come from Japan?

I mean do the rotary tuners in Japan swear on factory as well?? I wonder???

j9fd3s

up at the top theres a long thread about apex seals, look i'm unlazy

apex seal thread



mike

R1TT

j9fd3s Im quite aware of the apex seal thread, if you care to read the post it is actually regarding CORNER seals,



look I can read? really?

j9fd3s

you say "Thank's for the info Judge Ito, so when its time I should stick with stock is what your telling me right, ok cool

Now what is your take on 3mm seals? also 2pc vs 3 pc?"



how many 3 peice corner seals are there? theres no need to be sarcastic we dont know what you have or havent read



mike

R1TT

j9fd3s I know that I had a little blurb on Apex seals 2mm 2pc vs 3pc, but most of all I am asking about the design of the hurley corner seal and springs, and if anyone has has experience with them, I feel no one has actually answered the question directly. Also j9fd3s sorry about the sarcasim , I was just responding to the lazy comment (don't mean to get off on the wrong foot)



Judge Ito have you actually used the dual spring design corner seals, if yes or no, what is you feeling's about the design?



now on the Apex seal thread all I really got was the stock 2mm 3pc seal, is good for boost apps,

atkin's 2mm 2pc good for N/A or when using bridge port, stock 3pc will not work,

also someone said that 3pc good for sealing but may damage rotor groove



Now not to dog the Judge's or anyones experience on rotary building skills, I've read many of the Judge's post and he seem's to be very knowledgable with many year's of rotary experience under his belt, and I respect that alot, He also seems very helpful in sharing his experiences with fellow rotor head's and I feel I must thank him again for taking his time to share and help.



Back to the Apex seal thread again(sorry), everyone seems to bow to the stock seals, but it seems that the Apex seal thread is just a comparison of the Stock vs Atkin's vs Hurley's vs Ianetti's vs Racing Beat carbons (let me know if I've missed one)

All seals which are readily available (easy to get) in North America

Now correct me if Im wrong- Stock Mazda parts are from Japan

Hurley's-British

Ianetti's, Atkin's, Racing Beat I believe are from the state's (like I said correct me if I'm wrong)



What about the Japanese hardcore rotary tuner's? As I stated on the Apex seal thread (RS pantera,Revolution NB,R Magic ,Scoot,Axia sports, Revol,Functional and perhaps others)



I mean is Mr. Amemiya really using the stock Mazda seal's? (If so I too will bow to the stock seal as well, not to say that I do not think they are good)

Does anyone know what he uses on the JTCC 3 rotor?

What about those of you lucky enough to go to the Tokyo Auto Salon? anyone find out what seal they use in those hype RX7's?



and once again I do appreciate everyone's feedback and helpfulness

j9fd3s

yeah, thats the important thing. it seems that info on the amemiya cars is hard to come by i have no idea what they are runing. the only one we can say for sure is the scoot car, they run and afik make the nb7's.



the caron seals that racing beat sells are the factory mazda racing seals, made in japan



mike