silicosys4
Banned Member
- 427
- 7
- Jan 13, 2011
-
Port Angeles,
Washington
I bought some used Nascar titanium valves off ebay for $20 for a set of 8. They are going to be a christmas present for a friend of mine, and for shelf-candy they are pretty trick.
They are small block chevy valves, and are damn light for big-ass valves.
As I'm looking at them, I'm comparing the size of these valves to the new SS valves for the 4g I have sitting around waiting to go in....
The ti valves are much bigger than the dsm valves...I got to thinking....could the ti valves be machined into 4g valves? There certainly seems to be enough excess material.
I researched a little bit, and found that the ti valves don't last anywhere as long as SS valves, but are much lighter, and when softer beryllium/copper seats are used can last up to 500 miles at avg. 8000rpm, before needing to be replaced. That could be a lot of 1/4 mile passes.
The beryllium copper seats on a SBC are about $250...
So at this point, out of curiousity,
Has anyone machined titanium enough to know if it is possible to cut down small block chevy valves into 4g63 valves? I saw quotes online from people paying $20 a valve or so to have used titanium valves cut down to fit their head....of course, those were small blocks, and machining was probably not that crazy to get them to fit...
Also, does anyone know of a machine shop that would be able to do beryllium seats without trying to rape a guy? Seems like if it's $250 or so for a small block set up it couldn't be much more for an inline-4 setup.
Anyways, if it's under $600 or so to have valves cut, and beryllium seats installed, it might be worth it if someone is already having the head work done, and wants to run oh I don't know....beehives and titanium valves
could be worth it.
P.S. the titanium valves were $1000 new from del ray...$22.50 off ebay for 8 used TITANIUM exhaust valves (56 grams apiece)
http://www.ebay.com/itm/7MM-Del-Wes...Parts_Accessories&vxp=mtr&hash=item23158fbe78
They are small block chevy valves, and are damn light for big-ass valves.
As I'm looking at them, I'm comparing the size of these valves to the new SS valves for the 4g I have sitting around waiting to go in....
The ti valves are much bigger than the dsm valves...I got to thinking....could the ti valves be machined into 4g valves? There certainly seems to be enough excess material.
I researched a little bit, and found that the ti valves don't last anywhere as long as SS valves, but are much lighter, and when softer beryllium/copper seats are used can last up to 500 miles at avg. 8000rpm, before needing to be replaced. That could be a lot of 1/4 mile passes.
The beryllium copper seats on a SBC are about $250...
So at this point, out of curiousity,
Has anyone machined titanium enough to know if it is possible to cut down small block chevy valves into 4g63 valves? I saw quotes online from people paying $20 a valve or so to have used titanium valves cut down to fit their head....of course, those were small blocks, and machining was probably not that crazy to get them to fit...
Also, does anyone know of a machine shop that would be able to do beryllium seats without trying to rape a guy? Seems like if it's $250 or so for a small block set up it couldn't be much more for an inline-4 setup.
Anyways, if it's under $600 or so to have valves cut, and beryllium seats installed, it might be worth it if someone is already having the head work done, and wants to run oh I don't know....beehives and titanium valves
could be worth it.
P.S. the titanium valves were $1000 new from del ray...$22.50 off ebay for 8 used TITANIUM exhaust valves (56 grams apiece)
http://www.ebay.com/itm/7MM-Del-Wes...Parts_Accessories&vxp=mtr&hash=item23158fbe78