BarneyC 2 #1 Posted yesterday at 01:09 PM Back in 2006 having a couple of slightly smoky Suffolk Punch 75G iron engines one with worn bore and the other with some internal corrosion of the bore I decided to challenge myself to rebore one of the engines. The engine has been running since 2006 and compression is still excellent and no smoke at all. The project was made more difficult by not at the time being able to find an oversize piston or even just oversize rings. I researched other options and eventually found a set of suitable rings which were suitable for a 52mm bore. I have attached a few images, no explanation as I am guessing that anyone who wants to do this probably does not need an explanation? Very important to get the gudgeon pin at 90 degrees to the cylinder. Suffolk punch pistons are not cam ground but they do need to be tapered. I hope someone with one of these engines finds this of interest. You need a lathe with a minimum of 9" swing Share this post Link to post Share on other sites
