Posts: 1912
Joined: 10/5/2017
Location: Bradenton, FL USA
My motor for my 125 build has 0 hours top to bottom, everything's a bit dingey so I would like to get it nice and clean without splitting cases. Anyone got any tips? Not looking for a mirror finish or anything but something relatively good and clean.
Unleaded tastes a little tangy. Supreme is kinda sour, and diesel tastes pretty good.
Posts: 415
Joined: 1/29/2018
Location: Bethania, NC USA
Mag wheel cleaner, toothbrushes and the sponges with brillo pad on one side. Also some simple green. I did my yz250 engine on the bike best i could before i sold it. 
Posts: 397
Joined: 11/26/2018
Location: GA, USA
i know you can vapor blast them but have the valves good.
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Posts: 1432
Joined: 3/11/2013
Location: Tacoma, WA USA
Go to the hardware store, or a marine place and get some expanding plugs, or rubber stoppers.
Put the stoppers in your intake & exhaust ports. Then put plug your tranny and PV vent hoses.
You can use some kind of caustic cleaner like the purple zep degreaser and either scotch-brite, or a stainless wire brush on the aluminum cases. On the cylinder casting (rough cast) use a nylon brush, the wire brush and scotch-brite mess up the dull finish.
Posts: 5562
Joined: 1/31/2018
Location: Mansfield, OH USA
Without disassembling the engine you can have it sodablasted and be OK. My local vapor blasting guy told me that blasting an assembled motor isnt a good idea. Honestly i dont know why soda is OK and vapor isnt since vapor is less abrasive. Just wanted to throw that info i got from my local experts.
Posts: 1912
Joined: 10/5/2017
Location: Bradenton, FL USA
I appreciate the responses fellas.
Unleaded tastes a little tangy. Supreme is kinda sour, and diesel tastes pretty good.
Posts: 240
Joined: 10/2/2015
Location: IL, USA
kb228 wrote:
Without disassembling the engine you can have it sodablasted and be OK. My local vapor blasting guy told me that blasting an assembled motor isnt a good idea. Honestly i dont know why soda is OK and vapor isnt since vapor is less abrasive. Just wanted to throw that info i got from my local experts.
I would assume he doesnt like the idea of blasting the gaskets with high pressure water.
