Help identifying gs 1100e engine

[Guest]

Hi so I bought some bikes to part out and all were 82 GS1100E. One bike has a engine that is slightly different. There are no numbers stamped in the engine and it looks like there never were any. Idk if it’s some kind of replacement. The thing that caught me off guard was there is no provision for a oil pressure switch on the bike. It just looked odd to me. Also the head looks the same but is missing a fin on it. Is this a katana engine or something? Also there is usually a oil galley that runs along the back of the cylinder with a plug in it but there is none on this engine. Anyone know what this is?

[427SVO]

This is the head with the missing fin

EFC43517-82E8-4299-8C51-F9E62008EF68.jpgFin missing right under oil plug

[427SVO]

2F246803-A580-4C6B-9342-1167DE671D76.jpgMissing oil pressure/temp provision

[427SVO]

D9A9E34A-9F21-44D0-956F-753BF93BF245.jpgNormal 82 GS1100E head

[427SVO]

040E2CFE-3A92-4D5E-850E-A347F93124BE.jpgNormal GS1100E oil pressure switch

[TeamDar]

80-82 GS750. Look on the front of the cylinders for the displacement badge.

[427SVO]

80-82 GS750. Look on the front of the cylinders for the displacement badge.

Your exactly right. Thank you!