Tecumseh does not specify that this can be done but they don’t say it can’t either. Been looking for the tooling and any info I could find for awhile, didn’t find much of either. They sold a bushing so you can fix a sloppy journal bore on the block/mag side (one for the sidecovers as well) for a lot of their engines built in the 60's-70 except for the HS series. In middle 1980's the updated the small frame H (3 and 3.5hp) to the larger journal size on the block and the sidcover on the H35 and droped the repair bushing.
I was successful in installing the repair bushing In a late model I tore down last night and reaming it to size with some tooling I collected and a few pieces I made to do the job. I installed an early shaft and sidecover an checked the fit and endplay and all that is a go and acceptable per specs. So now I will work on all the other things the donor block needs to get it into shape (cylinder work, valve seat and face recuts, drill and tap the bosses under the flywheel so I can install point magneto, etc.. so I can do some testing. Hopefully this works, With the lack of decent rear exhaust small frame blocks to work with out there this may help a little….plus I have a few of these blocks NOS
now to clean this disaster area up!!
I was successful in installing the repair bushing In a late model I tore down last night and reaming it to size with some tooling I collected and a few pieces I made to do the job. I installed an early shaft and sidecover an checked the fit and endplay and all that is a go and acceptable per specs. So now I will work on all the other things the donor block needs to get it into shape (cylinder work, valve seat and face recuts, drill and tap the bosses under the flywheel so I can install point magneto, etc.. so I can do some testing. Hopefully this works, With the lack of decent rear exhaust small frame blocks to work with out there this may help a little….plus I have a few of these blocks NOS
now to clean this disaster area up!!
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