Rotary Avaition Apex Seals
Senior Member
Joined: Oct 2001
Posts: 10,906
From: Peoria, AZ
I haven't had any problems with my Ra seals, 14psi and 8500 rpms for 8000 miles. I do unfortunatly have the RA apex seal springs also, which after my motor was assembled and driven I was informed by a few of the Oki boys that they were no good. I'll have the motor apart in a month or two for some upgrades. I'm curious to see what I will find.
Senior Member
Joined: Dec 2003
Posts: 203
Originally Posted by net seven' date='Feb 27 2005, 02:56 PM
It clearly shows APEX SEAL wear, and plus I was one of the 1st people to get these apex seals and I have been driving this car daily. I am willing to bet there is no one around here that has more miles on these seals than me.
I have an engine running these seals with a tad over 40,000 miles, with zero issues whatsoever.
Senior Member
Joined: Jan 2002
Posts: 1,345
From: CT
Originally Posted by scathcart' date='Feb 28 2005, 08:28 PM
I have an engine running these seals with a tad over 40,000 miles, with zero issues whatsoever.
RA springs also?
Senior Member
Joined: Jul 2004
Posts: 674
From: Vero Beach, Florida
Originally Posted by DrifterRX' date='Mar 1 2005, 04:42 PM
Would someone explain to me exactly what is wrong with the RA springs? I did a quick search but didn't spend too much time reading threw all the posts that had the word Spring for RA in them.
From what I heard is they dont hold up to the heat and like to lay down after awhile dropping your compression and causing apex chatter at high rpms, I could be wrong its happened once before that I know of
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Joined: Dec 2003
Posts: 203
Senior Member
Joined: Jun 2003
Posts: 917
From: Grand Prairie, TX
Originally Posted by 1revnrex' date='Mar 1 2005, 01:46 PM
From what I heard is they dont hold up to the heat and like to lay down after awhile dropping your compression and causing apex chatter at high rpms, I could be wrong its happened once before that I know of 
Not to come off like a jerk or be disagreeable, but I'm still waiting for definitive proof on this. I've heard the rumours but I haven't actually seen a case of it yet. If apex seal springs are failing that easily, it'd be quite easy to spec them out and measure them after an engine has been run extremely hard and then lost compression. I really would like to see some hard data on this before I tell customers to chunk the idea of using RA stuff.
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Senior Member
Joined: Dec 2002
Posts: 4,837
From: Wayne, NJ
Originally Posted by BDC' date='Mar 2 2005, 03:01 AM
Not to come off like a jerk or be disagreeable, but I'm still waiting for definitive proof on this. I've heard the rumours but I haven't actually seen a case of it yet. If apex seal springs are failing that easily, it'd be quite easy to spec them out and measure them after an engine has been run extremely hard and then lost compression. I really would like to see some hard data on this before I tell customers to chunk the idea of using RA stuff.
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kevin.
Senior Member
Joined: Jun 2003
Posts: 917
From: Grand Prairie, TX
Originally Posted by teknics' date='Mar 2 2005, 12:28 PM
You want hard evidence? The people MAKING them said it, well at least about the springs.
kevin.
kevin.
Fair enough Kevin, but have they actually tested them? Are their own claims true or are they covering their rear-ends in the event that they are true? I'd like to know if they actually got these to fail or not.
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