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In frame crankcase cleaning

In frame crankcase cleaning

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Dan Pratt
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Hello experts,
I would like to ask what others do to clean the crankcase when rebuilding an engine in the frame. My machine is inside (a nice shop) so I do not want to get too messy. Also ventilation would be a concern. Crank and cam is still in but everything else is removed. I may install the liners before cleaning, just so the coolant area is separated from the oiled area.

So, what kind of cleaners,chemicals. What tools, protection? Rod journals are taped up. I really do not want to be laying on my back with solvent or other hazardous chemical dripping and fuming on me.

I sure would like it spic and span before I go to assemble. Lots of nooks and crannies.

Machine is the 5J D2.
Dan
Dan22 - 1936 22 Narrow, 1937 22 Wide, D2 5J, D4D
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Wed, Apr 11, 2012 9:21 AM
Billy-
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Howdy

A lacquer thinners works great for getting back into all the old sludge and crap. Get scrub the crankcase with a rag soaked in it, wiping it with a clean rag afterwards. Parts Cleaning guns with gas in them work great as well but can pose a risk in poor ventilated areas - this gets messy.

Very time consuming task task doing it if you don't want to get any of it on you - short stints work great.

Cheers
Billy
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Wed, Apr 11, 2012 4:07 PM
STEPHEN
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Reply to Billy-:
Howdy

A lacquer thinners works great for getting back into all the old sludge and crap. Get scrub the crankcase with a rag soaked in it, wiping it with a clean rag afterwards. Parts Cleaning guns with gas in them work great as well but can pose a risk in poor ventilated areas - this gets messy.

Very time consuming task task doing it if you don't want to get any of it on you - short stints work great.

Cheers
Billy
neglecting the ventilation and the mess, I use a pneumatic siphon gun from harbor freight tools to hose the innards down with mineral spirits.
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Wed, Apr 11, 2012 6:55 PM
ag-mike
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Reply to STEPHEN:
neglecting the ventilation and the mess, I use a pneumatic siphon gun from harbor freight tools to hose the innards down with mineral spirits.
be real careful using siphon gun and any thing flameable. ask me about the explosion and setting myself on fire using one. learnt my lessons real good that day.
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Wed, Apr 11, 2012 8:28 PM
ronm
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Reply to ag-mike:
be real careful using siphon gun and any thing flameable. ask me about the explosion and setting myself on fire using one. learnt my lessons real good that day.
Old set of coveralls, do-rag, goggles, painter's mask, solvent gun w/SOLVENT for God's sake, NOT gas:jaw:...messy, nasty, but it's the way to get an engine clean inside, probly not OSHA- approved...half barrel underneath, or lots of floor-dry, lots of ventilation, NO flames or sparks anywhere around...Stoddard solvent is not as flammable as gas or mineral spirits, if you can find it these days...wash from the top down, then from the bottom up, then top again, until the drips come out pretty clear...yeah, I've done this too many times-love in-frames...NOT!
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Wed, Apr 11, 2012 9:32 PM
Catmandu
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Reply to ronm:
Old set of coveralls, do-rag, goggles, painter's mask, solvent gun w/SOLVENT for God's sake, NOT gas:jaw:...messy, nasty, but it's the way to get an engine clean inside, probly not OSHA- approved...half barrel underneath, or lots of floor-dry, lots of ventilation, NO flames or sparks anywhere around...Stoddard solvent is not as flammable as gas or mineral spirits, if you can find it these days...wash from the top down, then from the bottom up, then top again, until the drips come out pretty clear...yeah, I've done this too many times-love in-frames...NOT!
I'm going to expound on the last thread and say NO IGNITION SOURCE, this means while you have a high ppm of gases, do not turn a light on, do not run a drill, everything you use MUST be non-arcy sparky. Remember its not the gas that goes boom its the vapors!!

CMD
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Thu, Apr 12, 2012 2:06 AM
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