Hi everyone. I used heat the other day to remove a couple of engine bearings, with help using other tools. I have another post " Is this Normal " about the " cracks " around the exhaust. This is the engine that came with a traxxas rustler purchased from ebay this past summer. I did some math the other night, as I need to get new parts for this engine, connecting rod, piston, bearings. I think the cost will be around $200.00, when its probably better to get a brand new engine of compatible size as they start at $250 before tax. There is a scuff mark in the 2nd pic at the bottom left corner close to the screw hole, probably from the punch I was using. I hope the photos helped.
Thanks

For the 50 buck difference I'd just buy a new engine. That way

you know what you've got. No surprises. Gets rid of the exhaust cracks, too.

I would get a completely different engine altogether. Traxxas engines are O-K, but just. A Dynamite .19T is a very nice upgrade for not a lot more money, if even more. Dynamite is made by SH, and SH is well known for making decent RTR engines. Go for better and get a Novarossi 2.5.

I've never seen anybody use a punch to remove a bearing. I just heat the block in the oven at about 350 till it's hot and slap the back of the motor on a table top or board. the bearing pops right out. I don't like anything Traxxas, so 1QwkSport2.5r's idea about switching brands is a good one in my book.

I’ve always used heat to change bearings. They will literally fall out unless the crankcase is super dingy and fully of oil sludge. Even then, a 10min stint in the oven at 350°F is a sure bet to have the bearings falling out. Using a punch on these rather fragile crankcases will undoubtedly mar the surface(s) where the bearing race resides and cause a potential failure down the short road.

He said the scuff marks on the case by the left corner screw hole were probably made by the punch he was using is why I mentioned the punch. !0 or 15 minutes at 350 they fall right out. I have had to tap them on the back plate area on a table top but they come right out.

While it didn’t come across right because my wording sucks, I was insinuating that hammer fisting bearings out (or anything model engine related for that matter) is rarely ever necessary. Hammer fisting to me is anything involving brute force, hammers, pliers, vice grips, punches, etc. and should never be used on model engines.

I am in full agreement with you; I’m sorry if I came across any other way.

Thanks for the advice & the Dynamite .19 engine is available at one of the local hobby shops. I haven't done anything with the carburetor but if I use it again, I'll take it apart installing new O-rings & whatever else. I understand with radio control that parts might be out of stock depending on what the person needs. I find one shop to be always out of Traxxas stock but maybe its just supply & demand or something out of my control.
Have a good weekend everyone.