Best way to flush bottom end.

[sheefreak]

Doing a new top end on a friends Blaster, Kerosene good to use to flush bottom end out?

[bigboybanshee]

Doing a new top end on a friends Blaster, Kerosene good to use to flush bottom end out?

361570[/snapback]

 

I've heard of people using kerosene but IMHO it's best to split the cases. You never know what might be wedged in a crevice that could pop out and fubar something in the bottom end Going through the bottom end shouldn't take but a few hours to tear down, clean, and re-assemble...

[fixitrod]

You can try to flush but I wouldn't risk it. If there is in metal that made it into the crank seals they will go bad and ruin your new rebuild. A few of us have tried and ended up rebuilding again.

[.]

there isnt much area in a blaster engine for stuff to hide.....I got a blaster that grenaded a piston pretty good, crank wouldnt turn over because it was wedged with a piece of the piston.

 

Got it broken loose, got all the stuff I could out of it, flushed it out with some kerosene and threw it back together with a new top end. Thing got the shit beat out of it for over 2 years trying to keep up with a 250R, banshee, and a raptor. It finally wore out and I put another top end on it and sold it.

[locogato11283]

3500 psi pressure washer will take care of that

[fixitrod]

I assumed it was a melt down or something. If you are just redoing the top end kerosene.

 

I also missed the fast that it was a blaster...

[sheefreak]

You could tell it was way lean, the exhaust side of the piston basically disintegrated until it reached the first ring landing and a chunk gave away and that was it. The pieces that were in the exhaust were so brittle that I thought I could get away w/flushing it, but if it has been in you fella's experience a bad idea not to split the cases, I guess I will go that route. Any more input?

[sanddragon2004]

You could tell it was way lean, the exhaust side of the piston basically disintegrated until it reached the first ring landing and a chunk gave away and that was it.  The pieces that were in the exhaust were so brittle that I thought I could get away w/flushing it, but if it has been in you fella's experience a bad idea not to split the cases, I guess I will go that route.  Any more input?

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i broke a reed in a motor and ended up using tranny oil ATF to flush all the shiz out, just fill the crank case, cranked it over everything stuck to the crank so i could get it out, then i just turned it upside down, and blew it out with a presure washer. no problems with it so far.

[89Steeda]

I did the flip it upside down, then steam clean it, carefully a few times. Then I flipped it right side up, filled it to the top with diesel, worked the crank easily back and forth, dumped it out. Did this over and over about 4 times. This was on a CR 250, but its the same principle. Good luck, I'd split it if I had to do it again, my Warrior just got split tonight.

[racer]

I also missed the fast that it was a blaster

361670[/snapback]

god damn, wanna talk about ironic typos.

 

 

 

[stclark816]

3500 psi pressure washer will take care of that

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Yup, worked great with my cases, never had any problems.

[fixitrod]

god damn, wanna talk about ironic typos.

362019[/snapback]

[sheefreak]

Ended up splitting the cases last night. What a pain in the ass, vertically split cases. It took a while to get the crank bearing pressed back in the case, but we got it and crank is turning true and free. Makes a banshee motor look like the best design ever.

[.]

ah.....a blaster is easy......ah....any 2 stroke is easy.....there aint that many moving parts.

[sheefreak]

It wasn't that hard, just a lot nicer to split a case on a banshee.