11-A ,11-B, Valve cages?

[Clincher]

Are the cast aluminum valve cages, valves, rocker arm assemblies, etc., the same and interchangeable between Series 11-A and 11-B?

--Thanks.

[PFitz]

Clincher,

I'm not 100% sure, but I seem to remember there is a differance between 11A and 11B cages. Can't remember what, but it came up when I had an 11B in the shop a couple of years ago. Someone had put a couple of smaller valve cages on it and we were looking to get correct sized ones for. Wrong size cages throw off the rocker arm geometery and make for a noisy valve train.

PFitz

[PFitz]

Bore and stoke the same, but the owners manual says they changed the connecting rod bearings on the 11B, so cylinder spacing, possably rocker box size may differ. I thought I could check the 11A,11B parts book.........if I could find mine. If you have access to an 11A, 11B parts book, check the part numbers of the rocker boxes. Franklin only changed part (drawing) numbers if there was a change in the part.

PFitz.

[Clincher]

I found my Series 11 Parts Book and it shows only one Reference Number (R-2469) for "Valve Walking Beam Case", so I guess 11-A and 11-B must be same. Thanks for your advice.

[ak]

It is my firm understanding that 11 A and B are interchangeable. John

[Clincher]

Thanks, John