I was just wondering if any one with a 3rd gen has had susces with the rotary aviation apex seals. If so how many miles and how much boost, thanks.

 

I just recently got my motor up and running, 2300 miles up to 7psi...nothing extreme yet.

Nice set-up BTW

 

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 think they are great assuming you get new housings to go along with them.

 

Thanks



I am going to be using good used rotors, should I just go with atkins two peice or mazda oem.

 

OEM two piece have been shattering in peoples motors around and just above 13psi (including myself). I chose RA.

 

dubulup did you use new or used rotor housings

 

7k miles @ 15psi, no problems

 

use the stock springs with the RA seals and it'll work great

stock=flame hardened

 

just to clarify.....use the two stock springs (1 larg,1 smal) to one ra apex seal.

 

What are the RA springs useless or something?

 

Uh, got two customers with recent Mazda OEM 2-piece 2mm apex seals with over a total of over 10,000 miles about now.
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

 

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.

 

used housings. first motor I built so I didn't want to shell out the dough...the warranty is only for stock applications AND if new housings are used.

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.

 

Which is better the RA or the OEM

 

when was this batch patch release??

 

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.

 

From what I gather, more people prefer the OEM seals.

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.

 

So far I have over 10,000 miles on the seals at around 13psi..... no problems at all, and it is the most reliable rotary I have ever had. I did clearance the apex seals widith wize a good bit to aid in beter compresion from the start.

 

Kevin which seals u have in your car

 

2mm from the 2nd batch, purchaced in november 2004

 

Well I just got my engine back together with RA seals. I'm not sure what batch mine was but there was no stamps or numbers anywhere on the seals.

 

no nubers or stamp on mine ether

 

Did yours come in a package like this?

 

no, mine was more line individual seal but attached to each other.if you get what i'm saying