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What valve seat material for Titanium Valves. 3
- Thread starter ZoRG
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Bronze is a copper-based alloy. Beryllium bronze is used for high performance engines that typically employ Ti valves. Go to the Copper Development Association site for more information on specific alloys, properties, etc.:
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The make of the valve either delwest or manley probably says for you to use a copper/bronze based seat. That is just because the matierial is softer and won't wear the titanium as fast. I know many people who have used a "soft" standard seat and have had much sucess with it. Instead of the valve wearing out the seat the seat will wear out the valve. Been running ti valves on soft stock seat for over a year now on my bmw engine..
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ZoRG,
As I mentioned in my email, beryllium-copper alloys are used for high performance engines. One such example was the FO110J 3.0L V10 produced by Ilmor/Mercedes for the 2000 F1 World Championship. Some aspects of this engine, including confirmation that beryllium-copper was used for the valve seat and valve guides, were described in SAE Technical Paper 2002-01-3359. You may want to perform a keyword search for SAE Technical Papers to see if you can find more information on specific alloys, valve seat suppliers, etc.
As I mentioned in my email, beryllium-copper alloys are used for high performance engines. One such example was the FO110J 3.0L V10 produced by Ilmor/Mercedes for the 2000 F1 World Championship. Some aspects of this engine, including confirmation that beryllium-copper was used for the valve seat and valve guides, were described in SAE Technical Paper 2002-01-3359. You may want to perform a keyword search for SAE Technical Papers to see if you can find more information on specific alloys, valve seat suppliers, etc.
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I know about beryllium copper, but its simply to expensive for my project, I have found another metal that could be suitable, called Trojan, has better heat conduction than beryllium copper, so overall seems to be a better and cheaper alternative.
Also I can get ready made Ampco 45(Bronze/Aluminium) seats, are they suitable for titanium?
Here is the info for Trojan:
Also I can get ready made Ampco 45(Bronze/Aluminium) seats, are they suitable for titanium?
Here is the info for Trojan:
If beryllium-copper is too expensive, then I would investigate one of the high alloy bronzes like Ampco 45 or the Trojan alloy. Reasonable high temperature strength, good thermal conductivity, and low wear against Ti are the obvious goals. Good luck.
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Does anyone know of a domestic (United States) source for the TROJAN alloy? We have a project that we would like to use the alloy for experimentally. The health concerns with copper/beryllium have made the company wary of that material.
Thanks in advance.
WH
Thanks in advance.
WH
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If you can gundrill do that, I bought some material for valve guides it took 2 drills to bore 32 guides, next time Ill rather buy a gundrill, btw here are the guides:
For the seats, I first tried to do the drilling on a manual machine, and then just bore out with a boring bar on the cnc, however after a short while, the manual drill was blunt as well, so I got out our gundrill, and did the whole operation in the cnc, the gundrill worked really well here, I have not yet taken pics of these.
For the seats, I first tried to do the drilling on a manual machine, and then just bore out with a boring bar on the cnc, however after a short while, the manual drill was blunt as well, so I got out our gundrill, and did the whole operation in the cnc, the gundrill worked really well here, I have not yet taken pics of these.
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