Taller apex seals in Rx8 rotors - is this common yet?
04-04-2011, 09:47 PM
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Taller apex seals in Rx8 rotors - is this common yet?
Hi all
Engine is a 6 port with HKS turbo kit fitted and the (stock) apex seals have bent, most likely tune related. While the engine is apart I'm thinking it's worth deepening the rotor slots to accept earlier Mazda 2mm seals (along with earlier corner seals of course). It's easy enough to do and I figure it will add a bit more a of a safety buffer to the re-tune it's going to get. I feel the taller seals will handle more heat before they distort.
I'm just wondering if this is a common mod yet, and if there's anything I'm overlooking. I can't see a problem with the earlier seals and the RENESIS ports, nor with housing surface compatibility.
While I'm at it, has anyone tried closing up the side seal clearances significantly? I know zero side seal to corner seal clearance works well in pre-RENESIS engines, but they don't have the side ex port to take into consideration. The stock clearance seems excessive, surely half that amount would be satisfactory...
Engine is a 6 port with HKS turbo kit fitted and the (stock) apex seals have bent, most likely tune related. While the engine is apart I'm thinking it's worth deepening the rotor slots to accept earlier Mazda 2mm seals (along with earlier corner seals of course). It's easy enough to do and I figure it will add a bit more a of a safety buffer to the re-tune it's going to get. I feel the taller seals will handle more heat before they distort.
I'm just wondering if this is a common mod yet, and if there's anything I'm overlooking. I can't see a problem with the earlier seals and the RENESIS ports, nor with housing surface compatibility.
While I'm at it, has anyone tried closing up the side seal clearances significantly? I know zero side seal to corner seal clearance works well in pre-RENESIS engines, but they don't have the side ex port to take into consideration. The stock clearance seems excessive, surely half that amount would be satisfactory...
04-04-2011, 11:10 PM
#3
Boostin'
I haven't seen a need for it yet . Buy the stock size goopy seals on our site and call it a day. They are in stock ready to ship.
http://www.turblown.net/store/index.php?productID=260
http://www.turblown.net/store/index.php?productID=260
Last edited by Turblown; 04-04-2011 at 11:15 PM.
04-05-2011, 12:55 PM
#6
Boostin'
These aren't like the PTS seals that bend real easy. The manufacturers don't claim they are unbreakable. They are just extremely hard to break. They aren't rough on the housings like RA seals. I was one of the first guys to figure that out, as I was using them within months of their release around 8 years ago iircc.
04-06-2011, 08:22 AM
#9
Boostin'
04-06-2011, 04:14 PM
#11
Boostin'
Goopy are going to have a much better chance at surviving detonation that the Atkins. Atkins are a good alternative to OEM for n/a Rx-8s. From what Josh told we were the first to try the Atkins too.
Goopy are the best seals for the buck for turbo Rx-8s, hands down.
Goopy are the best seals for the buck for turbo Rx-8s, hands down.
04-06-2011, 04:40 PM
#12
Rebuilds anyone?
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Yeap, Turblown has it right. Goopy is great!
I've just started dealing with Johnathan recently and his seals are affordable and compareable to ALS.
I have modified RX-8 rotors to accept older 13B (taller) apex seals for a N/A road race engine. I used a method called EDM wire cutting, much more precise than using a mill.
I've just started dealing with Johnathan recently and his seals are affordable and compareable to ALS.
I have modified RX-8 rotors to accept older 13B (taller) apex seals for a N/A road race engine. I used a method called EDM wire cutting, much more precise than using a mill.
07-19-2012, 04:15 PM
#15
Hi all
Engine is a 6 port with HKS turbo kit fitted and the (stock) apex seals have bent, most likely tune related. While the engine is apart I'm thinking it's worth deepening the rotor slots to accept earlier Mazda 2mm seals (along with earlier corner seals of course). It's easy enough to do and I figure it will add a bit more a of a safety buffer to the re-tune it's going to get. I feel the taller seals will handle more heat before they distort.
I'm just wondering if this is a common mod yet, and if there's anything I'm overlooking. I can't see a problem with the earlier seals and the RENESIS ports, nor with housing surface compatibility.
Engine is a 6 port with HKS turbo kit fitted and the (stock) apex seals have bent, most likely tune related. While the engine is apart I'm thinking it's worth deepening the rotor slots to accept earlier Mazda 2mm seals (along with earlier corner seals of course). It's easy enough to do and I figure it will add a bit more a of a safety buffer to the re-tune it's going to get. I feel the taller seals will handle more heat before they distort.
I'm just wondering if this is a common mod yet, and if there's anything I'm overlooking. I can't see a problem with the earlier seals and the RENESIS ports, nor with housing surface compatibility.
However they recently suffered another "event" and now I believe one might be bent (engine is still running fine under boost but not so good starting and at idle + vacuum is down). Currently looking at installing ALS seals (for the rx7) in the next rebuild i do because I believe they will be even more durable.
Yes - common practice .
Last edited by Brettus; 07-19-2012 at 04:25 PM.
07-31-2012, 05:51 PM
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I may be mistaken but:...
Ceramic benefits are less warping due to heat, and less wear. NOT that they are stronger.
Not saying that abnormal wear and heat ruin compression, but I am pretty sure ceramics do not add any protection against catastrophic engine events; more of a long term protection against wear and tear.
Ceramic benefits are less warping due to heat, and less wear. NOT that they are stronger.
Not saying that abnormal wear and heat ruin compression, but I am pretty sure ceramics do not add any protection against catastrophic engine events; more of a long term protection against wear and tear.