Hello all, I am assembling a 57 Square 4, just about finished the bottom end and starting to think about installing the cylinders. I have a lifetimes experience rebuilding British bikes but this is the first S4.Trying to figure out the best way to replace the cylinders, several ideas but I thought I ...

Thanks everyone, I have now located a new set of rods which are on the way

Hello, I am about to start rebuilding my 57 S4, been delayed for over a year due to work but finally getting started. Does anyone have any information on the replacement con rods that were to be manufactured? I was put on a waiting list some time ago but no response so far. I want to build the bike ...

Hello all,
I am about to start assembling my ‘57 S4 engine, planning ahead and reading up as much as I can. I have the Otto head gaskets, reading the assembly instructions I find the instructions a little ambiguous regarding the initial installation. The instructions are clear for the re-tightening ...

Thanks, I had already crack checked ( i own a commercial machine shop so no problem to magnaflux the rods and bolts) however there is a variation of up to 0.010” in the lengths of the 8 bolts, the longest being the 2 new bolts, so nothing to use as a comparison. I am at the point where it all looks ...

Greetings and Happy new year from Manitoba in winter. I am about to assemble my Mk2 Square 4 engine. I have reconditioned the original rods but was unable to find a full set of new bolts. Does anyone have the exact length of the original bolts? I want to measure and check the originals have not ...

Perhaps I did not explain very well in the first post. I have separated the caps from the rods, what I am stuck on is removing the bolts from just the caps. These appear to be very tight, I have tried the usual gentle persuasion, heated the caps to expand the alloy around the bolts, made a basic ...

Hello all, is there any magical, easy way to remove the rod bolts out of the bearing caps on a 57 S4. I plan to re-size the L/E bearings but the bolts appear to be exceptionally tight, tried the usual mild blows with a plastic hammer, heating the cap, etc, but they all remain firmly in place. The ...

Not sure if this would be helpful to many of you, but I thought I would mention it. I am rebuilding a "57 S4, the camshaft was not worn, but it was pitted and unusable. I am based in Manitoba, Canada so some research led me to Shadbolt Cams, in Vancouver, BC <shadboltcams.com> They specialize in ...

Absolutely perfect Mick, exactly what I needed to know. Thank you. Mine is 2" short, obviously would have made it go much faster in the day. Now I can get the English wheel out and roll a section.