Acid to clean cylinders?

[rolmops]

I was told by an outboard repairman that it is a good idea to remove every last bit of aluminum that was on the cylinder walls of a 50 horse evinrude.He said that aluminum leftovers would grind against the new aluminum pistons and wear them down fast.<br />Then he continued to say that he does it by smearing some diluted muriatic acid on the cylinder walls, because aluminum corrodes away very fast and the sleeve does not.After cleaning up the acid he would hone cylinder and it should be ready for a rebuild.<br />The pistons I consider using are "GLM PRODUCTS".Did any of you guys ever hear about those?<br />Any of you ever use this acid cleaning method?<br />Thanks,Rolmops

 

[Walker]

Re: Acid to clean cylinders?

I won't use it on a customers motor. I get the damaged cylinder bored. I have used muratic acid on my own motor though.

 

[marinemech1]

Re: Acid to clean cylinders?

rebore motor acid is ok to remove aluminum but motor has a given amount of wear anyway<br />your changing pistons so only increase in price will be cost to rebore<br />i have no experience with aftermarket pistons

 

[Laddies]

Re: Acid to clean cylinders?

We used it on plated bores original, but now use it as a first clean up for all bores with aluminum stuck on the cyl. walls it will not hurt cast sleeves or plating, but it will eat or softed the aluminiun so it may be removed before honing, so it don't take excessive honing and wear on the the cyl. simply anouther way to hold down repair costs and do a quailty repair