NEW! Esmeril Racing RX-8 Apex Seals Released for Sale.
09-11-2009 | 02:03 PM
#51
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Joined: Feb 2007
Posts: 27
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From: Canada
and I've posted on a few occasions the specs for my material.
09-11-2009 | 02:45 PM
#52
Chris
Last edited by ChrisRX8PR; 09-11-2009 at 02:48 PM.
09-11-2009 | 03:35 PM
#53
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Joined: Apr 2003
Posts: 9,134
Likes: 25
From: Houston
As a person who does work with different metals based on their properties I can tell you that even if he did say exactly what metal it is, it doesn't tell us a whole lot. It doesn't take much effort to figure out which metals would or would not be good to use. Based on temperature requirements, expansion properties, pre-heat treatment hardness, etc, anyone who knows a little bit about metals could figure out what the base metal is or at least get one that has very similar properties.
What this doesn't tell us is how fine are the tolerances, specifically compared to stock seals? Are they slightly thicker, thinner than stock? Have they been heat treated? Even if they have been, at what temperature where they taken to, how long did it take to get it there, how long was it held, and how long did it take to cool? Were they just normalized, quenched, and tempered or where they held to a certain heat for a certain amount of time with controlled cooling over a certain period? You can drastically change the hardness and brittleness of nearly any metal quite substantially through the heat treat process so even just doing a hardness test on a finished seal is nearly worthless information.
Was the whole seal heat treated or was it just the sliding surface? Since the edge of the seal is rounded (as it has to be), how accurate was this shape held. What is it's radius? How fine of a surface finish is there on the seals? Were they machined pre or post heat treat? Was there both pre and post heat machining?
These are the kinds of questions you need to know in order to determine exactly what he has. Just knowing what metal is was and if it was heat treated don't really tell much. It's the process that is proprietary as it doesn't take a genious to figure out what metals are viable candidates. Mazda uses cast iron with an electron beam edge only heat treat fwiw. Cast iron is inherently brittle. It also doesn't have a very large coefficient of heat expansion. Right off the bat we know that if it's not as brittle, it's probably not iron and it's probably not cast. If it is iron that he used, which I doubt, I guarantee it wasn't cast and then machined to shape.
The point of this is to basically say to get over the lack of material being disclosed. Most people wouldn't know what to do with the info if they had it and those that would probably wouldn't care enough to go make a set anyways. If they work well, the results will speak for themselves. You guys aren't going to be able to go to your local metal shop, buy sme scrap metal and then cut your own seals so what they are and how they are made isn't of any importance to anyone.
What this doesn't tell us is how fine are the tolerances, specifically compared to stock seals? Are they slightly thicker, thinner than stock? Have they been heat treated? Even if they have been, at what temperature where they taken to, how long did it take to get it there, how long was it held, and how long did it take to cool? Were they just normalized, quenched, and tempered or where they held to a certain heat for a certain amount of time with controlled cooling over a certain period? You can drastically change the hardness and brittleness of nearly any metal quite substantially through the heat treat process so even just doing a hardness test on a finished seal is nearly worthless information.
Was the whole seal heat treated or was it just the sliding surface? Since the edge of the seal is rounded (as it has to be), how accurate was this shape held. What is it's radius? How fine of a surface finish is there on the seals? Were they machined pre or post heat treat? Was there both pre and post heat machining?
These are the kinds of questions you need to know in order to determine exactly what he has. Just knowing what metal is was and if it was heat treated don't really tell much. It's the process that is proprietary as it doesn't take a genious to figure out what metals are viable candidates. Mazda uses cast iron with an electron beam edge only heat treat fwiw. Cast iron is inherently brittle. It also doesn't have a very large coefficient of heat expansion. Right off the bat we know that if it's not as brittle, it's probably not iron and it's probably not cast. If it is iron that he used, which I doubt, I guarantee it wasn't cast and then machined to shape.
The point of this is to basically say to get over the lack of material being disclosed. Most people wouldn't know what to do with the info if they had it and those that would probably wouldn't care enough to go make a set anyways. If they work well, the results will speak for themselves. You guys aren't going to be able to go to your local metal shop, buy sme scrap metal and then cut your own seals so what they are and how they are made isn't of any importance to anyone.
11-09-2009 | 01:56 PM
#57
They're made to fit the RX8 rotors and housings. I'll be using them in my new motor if I can ever get my finances back on track.
11-09-2009 | 02:00 PM
#58
Power!!
Joined: Feb 2004
Posts: 4,412
Likes: 3
From: Sunny See attle
Chris: Any plans to create upgraded side seals? I know this is a common failure mode for the Renesis even in NA form. I suspect due to the impact with the side ports. Maybe something that is also less brittle and would have enough flex to it to take the hits and keep on ticking.
07-04-2010 | 03:24 AM
#61
06-02-2015 | 10:34 PM
#62
Registered
Joined: Jun 2009
Posts: 359
Likes: 44
From: PUERTO RICO
saludos
That is great. I will not be posting the specs of ours. That is a decision we made, that fact that one manufacturer posted theirs in a different market where there are already many other brands of apex seals does not mean I will do that here. There have been more than a few buyers already...I know at least two of them will pushing them to the limit. Let the customer reviews begin.
Chris
Chris
Last edited by gamaliel31; 06-02-2015 at 10:39 PM.
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