J. A. P 2s

Hello all. Bought a  j. A. P 2s the other dag at a market. Started stiping here dowwn and all looks rather good . Sent for a gasket kit but the head gasket seems softer and slimmer than original aluminium one. Replacing as gone a bit tin and black at side of egsaust valve. Its just theres a recess in the head that gos into combustion chamber and wondering if its to close to piston at tdc. First time i ever worked on a j. A. P.. Wood a 2s be old and what hp. Thanks very much.

Is that the gasket set from SEP? I believe L&S Engineers still have some original aluminium head gaskets.

No its not woodsman. Didnt bye that cos i didnt think id get the parts and lookin to much and not complete. And picked this up for €20. Good cowl and flyweel and tank. What i was lookin. But i think this is a good engine.

Thanks for your help

The serial number, which will enable us to date the engine, will be hand stamped into the crankcase.

Iwas looki to hard 19266f.

Hold on i have it now

Any help.

Yes, that's the engine number.
2S = engine type
O = date code letter
71134 = engine number
68 = specification
Arrow mark on the cowling indicates supplied to the military.

O codes for 1938 and 1958. Looking at the silver/blue paint, and the castings made by Qualcast, I think it will be 1958.

Thats brillant blue cat and thanks very much. Didnt think it was so old. Dont see any arrow. Cant wait to get a back at it. Original head gasket is on the way from l&s as woodsman pointed me to thanks woodsman. First one got lost in post but there sending me another. L&s are so good. Got a full carb and fittings aswell. Never fitted and aluminium gasket before do. Dos it need any paste or do i eneel or heat it? Thanks again lads.

Maybe that wasn't an arrow mark on your previous photo. Duh!

No bodder. Took a lot of pictures before i found the right one