Chris86 as Gadge noted it is probably as a cost effective to replace the engine with a new one than to rebuild it if it is an one off rebuild as tools are expensive for such projects. Not only you need the hone, you probably would the valve guide replacement tools and hopefully you don't need the valve seat cutters. So far I have manage to avoid buying the valve seat cutters.

Originally Posted by Gadge
AVB, thanks for the rundown on the hone type, and pic. As you'd gather, commercial workshops here don't find it worthwhile to resize Briggs bores! And 'backyarder' repairers generally don't shell out for the special tools required.
We here in shops don't do much on rebuilds either as noted rebuilds vs new are simply too close to justify the costs. Most times we can buy and install a promo engine for less. The only time around here it cheaper to rebuild is went it come to horizontal engines as they are usually more costly on larger engines. It is still cheaper to rebuild a $2000 Kawasaki v-twin engine than the replacement cost just depends how quick the customer need the equipment back up and running.

The reason I have my hones is from a couple antique horizontal engine projects that the customer wanted me to rebuild which I did then the customer stuck with repair costs. Next time I will insist on at least 50% of the rebuild up front on an approved rebuild. It cost me more than I was charging for the rebuilds as I had buy the two hones and the stone sets. I was hoping to more rebuilds so I could offset the tools cost. I still rebuild engines for myself as you don't count the labor when doing it for yourself and also to keep in practice.

Repair costs is why I don't repair and sell used equipment anymore, I just do repairs now. Customers simply won't pay a fair amount for the equipment when it repaired. I got several pieces here that I did repair and I can't even sale them for what it cost me in parts to repair.