Question about Mastermind cylinder cleanup method

[Al Smith]

Gots to be very fast, and very thorough in the rinsing, as the alkali of the oven cleaner will consume aluminum

That's a no chitter.Don't dilly dally with it .Got it one and get it off ,fast .Nasty stuff .

 

[Chainsaw Jim]

Anyone try a little piece of folded up 50 grit by hand? You know when you've busted through the aluminum transfer when it starts getting slippery.

 

[beaglebriar]

Anyone try a little piece of folded up 50 grit by hand? You know when you've busted through the aluminum transfer when it starts getting slippery.

That's how I do it but I don't clean up cylinders every day.

Takes a while sometimes but I've never ruined one either.

 

[dall]

These are nice. Harbor Freight kit. 50 mmish
View attachment 44792

link?

 

[exSW]

link?

I just walked in the store and bought it.
They're like Dollar Generals. If you don't have one yet,you will.

 

[dall]

i use flapper wheels on a battery drill and i have scotchbrite ball mounted also i like that design also closest harbor freight to me is uniontown pa a hour or so away

 

[exSW]

i use flapper wheels on a battery drill and i have scotchbrite ball mounted also i like that design also closest harbor freight to me is uniontown pa a hour or so away

I looked on the website,couldn't find it. The packaging is gone so I can't get a code of it. I wouldn't want you to have to venture into Fayette County.

 

[Landmark]

Looks like you cut thru the plating pretty bad.

OP Dont feel bad. Been there myself. Easier to see the line after you have crossed it.

 

[Mastermind]

OP Dont feel bad. Been there myself. Easier to see the line after you have crossed it.

I like that.

 

[RIDE-RED 350r]

For sure! LOL!

Picked up some muriatic acid today. Going to try that method on the next one.

Thought I would add: The cylinder that started this thread had ALOT of transfer in it. Full width of the exhaust port above and almost full width below. That probably played a factor in my taking things too fa too fast.

 

[Mastermind]

For sure! LOL!

Picked up some muriatic acid today. Going to try that method on the next one.

Thought I would add: The cylinder that started this thread had ALOT of transfer in it. Full width of the exhaust port above and almost full width below. That probably played a factor in my taking things too fa too fast.

I've ruined more with acid than I have by sanding. If the acid gets in a scratch, it will eat away under the plating. Also, be aware that the fumes are not good for you, or any metals that are near.

 

[Mark71gtx]

Definitely an outside job with gloves and glasses...

 

[Stump Shot]

OP Dont feel bad. Been there myself. Easier to see the line after you have crossed it.

I would add to this that it was already broken before a fix was attempted. Nothing ventured...

 

[dall]

I looked on the website,couldn't find it. The packaging is gone so I can't get a code of it. I wouldn't want you to have to venture into Fayette County.

lol ive only been to uniontown 2 times once to get tires almost 20 years ago for my buddys garage and to look at my cousins stepsons truck when he tore it up lol

 

[MustangMike]

i use flapper wheels on a battery drill and i have scotchbrite ball mounted also i like that design also closest harbor freight to me is uniontown pa a hour or so away

There is one 20 min from me, but their shipping rates are so reasonable (and fast) I often just "shop from home" if I see what I want on line and don't need it this minute. For example, they shipped 3 solar panels to me for $6.99 and it came it 2 or 3 days!

 

[dall]

i cant find it in their listing is the problem

 

[huskihl]

I use acid first on most of them. I keep it out of the ports. I sand when I get close using a slotted nail with 80 grit and wd40 or whatever spray lube is close

 

[drf256]

For sure! LOL!

Picked up some muriatic acid today. Going to try that method on the next one.

Thought I would add: The cylinder that started this thread had ALOT of transfer in it. Full width of the exhaust port above and almost full width below. That probably played a factor in my taking things too fa too fast.

I use acid and sandpaper. Sand first to get any of the oil embedded stuff off the transfer, then use acid on a Qtip, the sand again. Rinse with baking soda at the end to neutralize the acid.

I looked at your pics. The witness lines show you to be safe. I wouldn't even it out on the other side myself. So what if it's a bit assymetric.

You have a nice chamfer and the port roof is still nice and round.

I'd run it as is and I bet you'll be just fine. Opening the other side is gonna add more width and possible more problems. Unless you're chasing tenths, not sure why you would even it out.

 

[Stump Shot]

If it helps anyone, here's a pic of the set up I use sitting on top of a 3m flapper I really like and used on a 3 horse B&S engine. Would love a smaller one for saw cylinders but don't think/know if one even exists. Has the Scotch Brite padding between the sandpaper in layers.

 

[dall]

If it helps anyone, here's a pic of the set up I use sitting on top of a 3m flapper I really like and used on a 3 horse B&S engine. Would love a smaller one for saw cylinders but don't think/know if one even exists. Has the Scotch Brite padding between the sandpaper in layers.

View attachment 45104

i have one of those also and havent found a smaller diameter one either