My 25 has had oversize valves installed some time in the past. They are the "modern type" stainless with two piece keepers, and they also have a larger head then the vendors sell. Head size 1.508
length 5.065 and stem 0.342. The part # 107 SP E 1127 is located on the stem. Any idea who makes these today or what motor they were for originally?

I've been doing my own research, and so far I've come up with nothing. Thanks in advance for any and all help.

Charles

The modern valves the vendors sell are listed as 1.543 head and .342 stem, they would work for you.

SP stands for "Sealed Power" brand

Google "sealed power 1127".

Thank you Frank and Kevin, now I've got a plan.