Scotch-bright to clean 12ht block down? (1 Viewer)

[melias24]

Hey everyone,

Only being an apprentice mechanic i was getting mixed answers as to how to clean my cylinder block down, some said 120grit sandpaper, others say wizzy disc's (which im against) etc etc.

I'm getting mixed answers whether or not scotch-brite should or shouldn't be used to clean your motor down. Silly me after cleaning the carbon off the combustion chamber in my bores and the block deck used scotch-brite and wd-40 i've read that the particles can be fatal to a motor?

I have my block stripped except the crankshaft is still installed. If i brake clean everything down (the motor was very contaminated with dirt particles anyway from the previous rebuilder being careless) will i be alright in the long run?

Thanks

 

[Feistl]

If your doing a rebuild/freshen up at this stage I would get it hot tanked then the mating surfaces machined properly. I know it adds a bit of cost, but for the $500 odd you can be certain the engine will last for ages. If you do a “backyard job” you run the risk of long term damage/failure and it’s a pretty big job to pull the motor and rebuild a second time

 

[FJBen]

Get it tanked and cleaned at a shop.

The first thing the machine shop said when I asked the question about using a scotch Brite to clean surfaces was absolutely don’t do it. If you already did it, get it tanked and cleaned so there is no question. Those fibers can mess up a lot of stuff