Colt Case Ingersoll Garden Tractors

ssmewing wrote: ↑Wed Jan 05, 2022 10:49 am

Eugen wrote: ↑Tue Jan 04, 2022 8:19 pm The guy that runs enginebore.com is located in Mississauga and he has done rebuild work at least for me and @Spike188 . I know that Boomer is the preferred, maybe only source of Onan quality parts for rebuilds. I'll send you his contact info in a private message.

As for an engine rebuild shop near you, that I wouldn't know.

Boomer has stopped doing rebuilds for years. He is THE source for new and used parts and parts advice.

http://boomersonanparts.com/

Download This John Deer enhanced manual.

https://www.gardentractortalk.com/threa ... 260.88333/

Do not print the whole manual. The manual covers many Onan engine models for each section. Carefully make sure you are only looking at the pages for your model.

Follow the manual for disassembly. Take your block to the machine shop and your valves if you want them re-faced. The machine shop will tell you hopefully that you can hone your block less that 0.005 over. If they do then you can reuse your pistons and just get new rings.

You may need to make or buy some tools. If you have an Onan Engine Overhaul Tool Kit, I hate you. Unless you sell it to me. The engine shop will most likely help with new bearings if needed and maybe take care of the valves. Cam bearings are often out of spec.

If it is worn over the 0.005 you are at a crossroads. Find a better block $100ish often. Or pay for the boring and buy new expensive pistons with rings at about a $600 difference. I have never gone with the bore job and the only way I ever would is if the customer requested it, just because of the costs. Boomer may even have good used blocks.

Onan's are a different engine from all others that Case Ingersoll used. So, do not apply this to all small engines. There is not an engine overhaul kit except for those resellers that bulk buy garbage and sell it cheap all over the internet. If you go to an engine parts-only reseller, they will not have Onan kits. The reason for that is many items can still be reused. Each overhaul is different.

None of this boring advice applies to the Kohler engines. They all must be bored, 100% must. The machine shop will tell you what size you need or sell one to you and then custom-fit the piston. The cranks are often out of round as well. By often I mean that they most likely are.

Cookie wrote: ↑Wed Jan 05, 2022 4:47 pm
I did a compression test and both cylinders are about 75 psi. The spark plug wires off the coil are melted , so it looks like the engine has run hot or very lean. I don’t know the history of this engine . All the tins are in place . I will check the read valve tonight.