How many miles on RA apex seals
10-26-04, 04:57 PM
#3
Rotary Freak
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i have close to 6k miles........ no problems!!
i have just ordered again from them for my firends car.. they make good stuff.
i would however like to know who had them the longest in a turbo application..
i have just ordered again from them for my firends car.. they make good stuff.
i would however like to know who had them the longest in a turbo application..
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10-27-04, 07:15 AM
#12
Lives on the Forum
Originally Posted by dubulup
OEM two piece have been shattering in peoples motors around and just above 13psi (including myself). I chose RA.
One is using a hybrid that regularly sees 14psi.
The other is a GT3540 that only sees 8psi currently, but it makes around 300hp easily.
I dunno about "shattering", but I haven't seen any of them "shatter" yet.
We blew up the GT3540 motor twice due to problems with a Haltech, but the apex seals did not shatter.
-Ted
10-31-04, 10:12 AM
#13
development
there was a large thread about it in the 3rd gen section not long ago...maybe shatter was a bad description...I have a rotor with little pieces of apex seal embedded in it, luckily my turbine wheels were fine. Friend on the board had his 35/40 motor blow while tuning ~15psi (wasn't turners fault...he's got lots of praise on this board) Tuner also said he had recently built 6 motors with these subject seals...of course the word came out about the bad batch after these motors were built...5 had come back, and was almost expecting this 35/40 motor to blow.
10-31-04, 10:16 AM
#14
development
Originally Posted by kevinbtz
dubulup did you use new or used rotor housings
Now, I wish I had used new housings, and without a doubt start piecing together a spare motor with new housings.
I didn't see a problem with the RA springs...yes there are two.
I also used solid corner seals, with the beefy springs from Atkins Rotary.
11-30-05, 09:44 AM
#16
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when was this batch patch release??
Originally Posted by dubulup
there was a large thread about it in the 3rd gen section not long ago...maybe shatter was a bad description...I have a rotor with little pieces of apex seal embedded in it, luckily my turbine wheels were fine. Friend on the board had his 35/40 motor blow while tuning ~15psi (wasn't turners fault...he's got lots of praise on this board) Tuner also said he had recently built 6 motors with these subject seals...of course the word came out about the bad batch after these motors were built...5 had come back, and was almost expecting this 35/40 motor to blow.
11-30-05, 09:51 AM
#17
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I think it was april/04 when several engine builders including myself had a few bad engine w/o any reason. We believed that it was caused by a bad batch of seals. I haven't seen this problem since.
Originally Posted by Indian
when was this batch patch release??
11-30-05, 12:41 PM
#18
Originally Posted by G.A.S.
Which is better the RA or the OEM
Personally, I use Atkins seals (cause they're local and race proven), but OEM is probably the way to go.
Both OEM and RA seals are relatively 'hard' seals, wheras the Atkins seals are on the 'soft' end of the spectrum. Meaning Atkins would break-in easier and also be easier on used housings.