Rotary Aviation apex seal report
09-19-05, 01:52 PM
#226
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Has anybody tried using rotary performance seals? How do they hold up in comparison?
they have 2mm race spring and 2mm street springs. theirs no info on there site about them other then that so i thought i would ask you guys.
they have 2mm race spring and 2mm street springs. theirs no info on there site about them other then that so i thought i would ask you guys.
09-19-05, 08:21 PM
#228
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Originally Posted by KillerRx4
Ive never hear of "rotary performance seals".
Do you have a link to the manufacturers site?
Do you have a link to the manufacturers site?
http://www.rx7.com/store/rx7/fcengine_internals.html <~~ site
09-21-05, 06:44 PM
#229
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Theres no information regarding the manufacture of those rotary performance seals. Id bet theyre somethink like atkins/ra seals sold under another name.
I assembled my new engine tuesday night (1 week rebuild
) so soon enough will find out if the housings are worn enough to affect compression.
I kept sideseal clearances much tighter this time between 0.0015 - 0.0025".
Just waiting on my clutch to come back then im ready to go.
I assembled my new engine tuesday night (1 week rebuild
) so soon enough will find out if the housings are worn enough to affect compression.I kept sideseal clearances much tighter this time between 0.0015 - 0.0025".
Just waiting on my clutch to come back then im ready to go.
09-21-05, 11:50 PM
#230
Originally Posted by KillerRx4
I assembled my new engine tuesday night (1 week rebuild ) so soon enough will find out if the housings are worn enough to affect compression.
) so soon enough will find out if the housings are worn enough to affect compression.Only time will tell.
That housing doesn't look bad at all. Is that the one you said looked better?
09-22-05, 12:08 AM
#231
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Nah man, thats the same rotor housing (rear) as pictured a few pages back.
Also someone was mentioning the surface finish of RA vs OEM apex seals.
Well i cant recall what the RA ones were like I think they were smooth/shiny.
The rx5 3mm OEM seals ive used in this build were a rough finish.
I would assume a rough finish will bed in sooner than a polished finish.
Also someone was mentioning the surface finish of RA vs OEM apex seals.
Well i cant recall what the RA ones were like I think they were smooth/shiny.
The rx5 3mm OEM seals ive used in this build were a rough finish.
I would assume a rough finish will bed in sooner than a polished finish.
09-22-05, 06:04 PM
#232
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Cause of engine failure has been identified.
I had marked the crank pulley wrong, we had 15 deg advance more than what we thought.
I guess that explains the carnage......
Suprising that it went almost all day being thrashed as hard as it was.
Maybe when I remark the crank & reset base timing I can saftely add 5-10 deg more advance.
I had marked the crank pulley wrong, we had 15 deg advance more than what we thought.
I guess that explains the carnage......
Suprising that it went almost all day being thrashed as hard as it was.
Maybe when I remark the crank & reset base timing I can saftely add 5-10 deg more advance.
09-22-05, 06:11 PM
#233
Originally Posted by KillerRx4
Also someone was mentioning the surface finish of RA vs OEM apex seals.
09-26-05, 03:33 AM
#236
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Originally Posted by full-cruise
i was at atco today for the rotary Vs piston event and came accros a stand called
goopyapexseals.com.. has anybody herd or used there seals?
goopyapexseals.com.. has anybody herd or used there seals?
interesting... i like seeing new products, although i don't know if anything can match stock for longevity and power, or ceramics for detonation resistance...
i'd like to see tighter tolerances in the motor so the apex seal would be a little bit more shrouded from the combustion...that wouldn't cure anything, but may give a little window for you to back off if you start detonating...maybe
09-27-05, 04:08 AM
#237
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Originally Posted by GUITARJUNKIE28
i'd like to see tighter tolerances in the motor so the apex seal would be a little bit more shrouded from the combustion...that wouldn't cure anything, but may give a little window for you to back off if you start detonating...maybe
09-28-05, 12:31 AM
#238
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tighter tolerances between the rotor and housing would have the apex seal "see" less of the combustion event.
the cause of detonation is exactly the same.
the cause of detonation is exactly the same.
09-28-05, 04:35 AM
#240
Originally Posted by GUITARJUNKIE28
tighter tolerances between the rotor and housing would have the apex seal "see" less of the combustion event.
the cause of detonation is exactly the same.
the cause of detonation is exactly the same.
But then with tighter tolerances, you would have a lower rpm range.
10-01-05, 10:08 AM
#243
Originally Posted by cmartinp28
asking again.... anyone use rotary aviation seals on new housings?
10-01-05, 01:10 PM
#244
Rotary Enthusiast
im curious because... the new housings have a coating to break in the seals faster, so its abrasive, i wonder if the abrasive nature of that coating smoothens out and keep the housings safe from further wear
10-03-05, 11:40 PM
#246
Ok here are some pics of an engine that was recently torn down with RA seals. The housings were used prior to the rebuild and had 85k on them. The engine lasted 15k after the rebuild and was damaged possibly due to lubrication problems.
Opinions?
Opinions?
10-04-05, 01:11 AM
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So do we know what the cause of the failure was? Did it spin a bearing, did it run out of oil???
The housings look good from what i can see but how was it driven & tuned?
I would expect the housings to look good if it had tame timing & was driven by a granny.
I will be impressed if it was tuned on the edge & driven hard.
The housings look good from what i can see but how was it driven & tuned?
I would expect the housings to look good if it had tame timing & was driven by a granny.
I will be impressed if it was tuned on the edge & driven hard.