Gold inserts

I'll take a stab, Russian VA?
Bob

I plan on machining them down to fit other engines unless I can find out what engine it's for.

I think that the glow plugs are for the McCoy 5 Red head that is a .049 engine . I think that they are some what hard to find and might be worth selling or trading to someone that could use them .

Mike1484

Agreed-these are glow head inserts for the beam mount front induction McCoy 049 glow-from the mid 50s...and the radial beam mount McCoy 5 glow from a couple of years later. They came in both plain and 'gold' versions...AFAIK there is no difference in performance or compression ratio between the two versions...but i'm open to correction on that aspect....IIRC the standard McCoy 1/4-32 glowplugs were also coloured gold around that time...

ChrisM
'ffkiwi'

I just saw some like these on ebay last night.

https://www.ebay.com/itm/203211798091
https://www.ebay.com/itm/203211797819

Thanks all for the great information confirming the application for these glow inserts. I'll now be in search of one of these engines. Talk about the horse before the cart!