Any updates from FD guys running Rotary Aviation apex seals?
#1
Original Gangster/Rotary!
Thread Starter
iTrader: (213)
Any updates from FD guys running Rotary Aviation apex seals?
Just curious. These were all the rage back when I was putting my motor together in 2004, but I opted to stick with all OEM internals. My engine is still running strong, has over 10,000 miles of 400+ rwhp abuse and has seen as high as 24 psi. How are the engine with RA seals holding up?
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#8
Banned. I got OWNED!!!
I built a few engines with them, only when asked. Most of the time the engines disappear and you don't know their current status. I built one engine for my own car and only ran it a short time before I traded it to someone else. IT changed hands a couple times and saw boost as high as 22psi (on a 9.7:1 HC setup) from what I was told. Eventually it got to have low compression and had trouble starting and idling, though it did not blow up. It was finally removed and swapped for another rebuilt core at about 15k miles from what I was told. The core is still floating around here locally somewhere, and one day I hope to get ahold of it and tear it down to see what it looks like inside. I expect to find worn housings similar to those pictured in the other threads about the seals.
#11
Certified Rotorhead
iTrader: (1)
ErnieT is using the Atkins 2mm cryogenic treated apex seals running a GT42R pushing 640RWHP @ 31 psi........ if your boosting less then 17-18psi OEM 2mm should be fine (street use)... above that, it all adds up... gettin cryoed atkins 2mm would be perfect
i highly suggest getting your apex seals cryogenic treated, even if it OEM ones... its a little more expensive though...... it makes perfect sence and very pratically and gives you piece of mind getting then cryoed..... and if you have the extra money go ahead and get the rotor housing inner surfaces cryoed.
just my suggestion.
i highly suggest getting your apex seals cryogenic treated, even if it OEM ones... its a little more expensive though...... it makes perfect sence and very pratically and gives you piece of mind getting then cryoed..... and if you have the extra money go ahead and get the rotor housing inner surfaces cryoed.
just my suggestion.
#13
Racing Mechanic
Just try this , there R the best
http://www.hurleyrotary.com/
I have 3mm ones , and the car runs perfect
I know that the best rotary engine builders use these seals
http://www.hurleyrotary.com/
I have 3mm ones , and the car runs perfect
I know that the best rotary engine builders use these seals
#15
Original Gangster/Rotary!
Thread Starter
iTrader: (213)
Originally Posted by rexset
Just try this , there R the best
http://www.hurleyrotary.com/
I have 3mm ones , and the car runs perfect
I know that the best rotary engine builders use these seals
http://www.hurleyrotary.com/
I have 3mm ones , and the car runs perfect
I know that the best rotary engine builders use these seals
The best rotary engine builders in the U.S. sure as **** do NOT use those seals.
I've broken more of the hurley 2mm seals than I care to count--20 or 30. The hurley's are very soft and break at the slightest hint of detonation. They don't tear up the motor because they're soft, but you're still left with a blown motor.
They are the *only* seal that I refuse to install in an engine I'm building for a customer. Based on my real world firsthand experience they do not belong in a boosted rotary engine.
#17
Original Gangster/Rotary!
Thread Starter
iTrader: (213)
Originally Posted by iceblue
Hurleys blow! 2mm OEM always!
I cryo treat every motor.
I cryo treat every motor.
What specific internal parts do you cryo?
#19
Passing life by
Originally Posted by GoodfellaFD3S
Yes they most certainly do.
What specific internal parts do you cryo?
What specific internal parts do you cryo?
This is something that’s gotten big recently, probably because I’ve been pushing it so hard lol!
There are many misconceptions about cryo as there are many processes available. The wrong choice could make or break a motor.
#22
Original Gangster/Rotary!
Thread Starter
iTrader: (213)
I don't have an engine internals cryoed, but here is what I do have cryoed on my FD:
Clutch disc
flywheel
PPF
S4 TII diff
brake rotors and pads
Check this link for a reputable shop that I've had good results using:
http://www.cryoscience.com/auto/rotary.htm
Clutch disc
flywheel
PPF
S4 TII diff
brake rotors and pads
Check this link for a reputable shop that I've had good results using:
http://www.cryoscience.com/auto/rotary.htm
#23
Passing life by
lol how you hear of cryoscience?
There good thats who dave uses.
You can't cryo just the sleve you do the entire housing.
I suggest the method found from cryoscience and another one called Advanced cryogenic processing. It increases the cryogenic results found from cryoscience by 250%.
There good thats who dave uses.
You can't cryo just the sleve you do the entire housing.
I suggest the method found from cryoscience and another one called Advanced cryogenic processing. It increases the cryogenic results found from cryoscience by 250%.