OutdoorKing Repair Forum Forums Restoring, Customising and Modifying Engines J.A.P. Model 2a Restoration

Hi Guys - after a long absence I'm back - and now living in Port Douglas, Queensland, formerly in Sydney.

My Triplets - the 3 Victa 18s I was restoring - couldn't make the trip with me and they are safely stored away in Sydney awaiting my return.

I'm now holed up in a one bedroom unit with no garage, no workshop and not much room to do anything - however, on the plus side is its quite rural up here and there is lots of old outdoor machinery to be had.

I couldn't help myself, so I got a pair of J.A.P.s - christened "The Twins" - a J.A.P. Model 2a and a matching J.A.P. Model 2s. They are pretty much the same engine with the 2s being the more industrial of the two - with a bigger sump and better governor mechanism.

I'm restoring the 2a first, on my dining room table - I hope the landlord doesn't read this.

The J.A.P. Model 2 was made in the 40's thru the 60s, with this particular engine dating from 1949.

They are very small, only standing about 15 inches high (without the fuel tank) and with a footprint of about 6 inches x 8 inches. They were often used with generators, battery chargers and water pumps - but as you can imagine got put to use doing pretty much anything on a farm.

I'm not an expert by any stretch of the imagination - but for what it's worth I will document anything of interest I discover as I restore it.

If you know about J.A.P.s - please don't hesitate to correct anything I may post that is incorrect - this is all about getting the correct details of the little Model 2a recorded on this forum - not about me pretending I know it all.....so.....

J.A.P. Model 2s - Specifications:

Engine Type: 4S
Displacement: 98cc
Bore: 52mm
Stroke: 48mm
Type: 4 Stroke - Side Valve
Power: 1.2hp at 2800rpm
Fuel: Petrol
Spark Plug: L-10 - Champion N-8
Points: 0.018 - 0.020
Magneto: Wico Flywheel Type - FW880 (but varied through the model life)
Carburetor: Zenith Type 13T


And here are some pictures of it as I picked it up.















Early observations - it has no spark - which from what I gather is a bit unusual for these things - apparently the Wico Flywheel Magnetos were really good and reliable.

If anybody is interested (granted, this is not a mower - but it was used outdoors!) I'll post progress photos as I go.

Polybus