precision machining valves bacdefgh precision machining blank stem oversize ... shaped valves with oversized heads and extra long stems these high performance ... are available in various materials exhaust valves have the patented 44 degree ... flow and higher gas speed stems need to be shortened to required length and keeper ... grooves need to be machined these valves are a must in ... valves they require machining by a professional with professional ... equipment head dia a 236445 in 2.000 black diamond b 236446 in 2.100 black ... tensilite titanium d 236448 in 2.125 black diamond e 236449 ex 1.715 black ... diamond f 236450 ex 1.750 black diamond g 236451 ex 1.750 special ... inconel h 236452 ex 1.850 black diamond zpn type stem dia .3107 .3107 ...
