remove tarnish and other real baked on dirt

nitroairplane wrote:

dankar04 wrote:Hoppe's#9 is divine! Works well and made to remove grime. Use out doors as stuff is potent. I have a very old bottle and one of chemicals it has in it is nitro benzene. Kind of temped to put some in pint of 1/2A fuel and see how it goes. Can't be any worse than nitro methane. Maybe try a junk Wen-Mac or OK Cub. Some of old fuel used this in racing fuel.

It can be worse.....
Nitrobenzene was used in glow engines before nitromethane .it has a slightly sweet smell but they stopped using it after they found it was Carsinogenic as well as highly toxic

GermanBeez wrote:

nitroairplane wrote:

dankar04 wrote:Hoppe's#9 is divine! Works well and made to remove grime. Use out doors as stuff is potent. I have a very old bottle and one of chemicals it has in it is nitro benzene. Kind of temped to put some in pint of 1/2A fuel and see how it goes. Can't be any worse than nitro methane. Maybe try a junk Wen-Mac or OK Cub. Some of old fuel used this in racing fuel.

It can be worse.....
Nitrobenzene was used in glow engines before nitromethane .it has a slightly sweet smell but they stopped using it after they found it was Carsinogenic as well as highly toxic

duy, nitrometh is JUST AS TOXIC.

nitroairplane wrote:

GermanBeez wrote:

nitroairplane wrote:

dankar04 wrote:Hoppe's#9 is divine! Works well and made to remove grime. Use out doors as stuff is potent. I have a very old bottle and one of chemicals it has in it is nitro benzene. Kind of temped to put some in pint of 1/2A fuel and see how it goes. Can't be any worse than nitro methane. Maybe try a junk Wen-Mac or OK Cub. Some of old fuel used this in racing fuel.

It can be worse.....
Nitrobenzene was used in glow engines before nitromethane .it has a slightly sweet smell but they stopped using it after they found it was Carsinogenic as well as highly toxic

duy, nitrometh is JUST AS TOXIC.

i dont think so.

microflitedude wrote:

nitroairplane wrote:

GermanBeez wrote:

nitroairplane wrote:

dankar04 wrote:Hoppe's#9 is divine! Works well and made to remove grime. Use out doors as stuff is potent. I have a very old bottle and one of chemicals it has in it is nitro benzene. Kind of temped to put some in pint of 1/2A fuel and see how it goes. Can't be any worse than nitro methane. Maybe try a junk Wen-Mac or OK Cub. Some of old fuel used this in racing fuel.

It can be worse.....
Nitrobenzene was used in glow engines before nitromethane .it has a slightly sweet smell but they stopped using it after they found it was Carsinogenic as well as highly toxic

duy, nitrometh is JUST AS TOXIC.

i dont think so.

Definitely not.

jetpack wrote:I've crock pot a lot of motors. Use a kitchen strainer as a basket, and submerge your parts on its lowest setting, cover it and keep it outside by all means. Do not breath vapors at all when you uncover it.

Cast engine cases will turn dark if left in too long. High heat will turn everything dark. You cannot re-use your crock pot for food and if thrown out, you break the ceramic pot so nobody picks it out of the garbage to use for cooking again.

Paint stripper also works well.

One full day on low should take care of most of it, stopping half way to remove the parts to check the progress and scrub the heavy deposits. A brass brush is safe.

I have noticed the potency has dropped I think. It has cleaned about 15 regular motors and the last couple it just didnt seem to work very well. Not like I had remembered when I first started using it.

jetpack wrote:It would have either been too high of heat or too long of time. Regular unheated antifreeze does no harm so it would have to been either two. The dark should come right off with some scrubbing with the copper cleaner.

PV Pilot wrote:Another good one to add to the list is Gumout carb cleaner, for the internals. Very old caked on castor oil resembled petrified tree sap (amber) and it's very hard to get it to break down. The Gumout I found out this past weekend pretty much liquifies it on contact. Have to be carefull with the Gumout because it can melt some soft rubbers.

I tried some of the Dawn Power Scrubber also that comes in the small blue squirt bottle. It works best if allowed to set on the parts for say 30 min, then some toothbrush work, followed by a hot rinse.

PV Pilot wrote:Another good one to add to the list is Gumout carb cleaner, for the internals. Very old caked on castor oil resembled petrified tree sap (amber) and it's very hard to get it to break down. The Gumout I found out this past weekend pretty much liquifies it on contact. Have to be carefull with the Gumout because it can melt some soft rubbers.

I tried some of the Dawn Power Scrubber also that comes in the small blue squirt bottle. It works best if allowed to set on the parts for say 30 min, then some toothbrush work, followed by a hot rinse.

jetpack wrote:I just finished trying to clean up an old motor in a 50/50 mix of glycol in the crock pot. Hardly touched the baked on stuff and none of the carbon in the exhaust port. It softened it all up however, so Im just going to finish cleaning it by hand.

gcb wrote:One thing I did not see mentioned is that once you put antifreeze in the crock pot, NEVER, NEVER, NEVER use it for food again. The antifteeze becomes embedded in the pot and CAN NOT be removed...and that ain't no crock!

George