sand in my crank...need help please

[monstermike]

So I just ordered some ported jugs from Kevin Herr and I'm stoked. Had my 89 for about 2 months. First quad I've ever had. ReBuilt a few car motors that's my background. And enjoy doing stuff myself.

 

Any way.

 

I cleaned around the cylinders with a rag , brake cleaner, and air from compressor. Took cool head off. Then when I took the left cylinder off , some sand from the between the two jugs fell on the crank. Ahhhhhhhhhh!!!!!!!!""

 

I currently have broken wrist so working on it is hard with a cast....

Hope idont have to tear bottom end apart

Being a newb and cripple

 

Once I assymble it can I run it for 10 sec

Oil change

Run for 30sec

Oil change

Over

and over like 5 or 6 times.

[So Cal Suspension]

Sand is one of those things that can demolish a motor in a short period of time... If it were me, and this was a brand new motor, I wouldn't risk it... You could probably pull the other cyl off, fill the cases with gas or I've heard you can use diesel, turn the crank over a few times by hand, and dump it out... do that a few times and I think you'd be okay...

 

Then again, all the pre-lubed parts on your crank would no-longer be lubed...

[NetBSD]

i would split the case if it were mine and clean it out right, oil changes wont do nothing because you dropped sand in the crankcase, the oil is only for the transmission.

[monstermike]

Old bottom just new top cylinders and pistons

 

 

What's the best way to do a top without this happening.

[NetBSD]

any time i pull the top end off any engine i take it to the car wash and hose the hell outof it, never EVER work on a dirty engine or this kind of stuff happens

[monstermike]

Ill def pressure wash next time. Any more input or other options besides splitting the cases.

 

I mean if I flushed it out enough it should be clean right? With the gas/diesel I would think that it be pretty efficient...what do you think?

[NetBSD]

i wouldnt trust the gas/diesel to clean all the sand out, to many places for it to hide. im not saying it wouldnt clean it out but i just wouldnt trust it, wipe out the mains and you got alot more money to toss into that thing

[So Cal Suspension]

i wouldnt trust the gas/diesel to clean all the sand out, to many places for it to hide. im not saying it wouldnt clean it out but i just wouldnt trust it, wipe out the mains and you got alot more money to toss into that thing

No, it's not going to be perfect, but that's why I said fill it up, and turn it over (spin the crank), and repeat it a few times until it all comes out.

 

I mean, let's face it, 95% of us who put together motors do-so in our garages, there is dust, dirt, and other shit that probably falls in our motors without us knowing. Truthfully, the BEST way is to tear the motor completely down, and clean everything in a solvent tank, but short of that, the diesel thing I think would be the most thorough thing that you could do.

[sheerider11]

Yeah nobody has a completely dust/ dirt free environment. Plus if it's gonna go in the dirt I can guarantee your gonna get dirt in there. I ran my motor on straight water for a few strokes one time. It's the nature of the beast.

[Coupelx]

flush it out. oil the bearings back up with 2stroke oil and put it back together.

[J.J.]

Once I assymble it can I run it for 10 sec

Oil change

Run for 30sec

Oil change

Over

and over like 5 or 6 times.

 

Mike, reading that prompted me to give you a little heads up; the crankcase is separate from the gearcase.

If you are gonna flush the crankcase then do it when the cylinders are removed, through the same opening that the dirt fell in. Turn the motor upside down to flush out.

 

Don't put diesel into the opening where the dipstick goes... I would just split the cases if it were me.

 

good luck and happy holidays

[monstermike]

Mike, reading that prompted me to give you a little heads up; the crankcase is separate from the gearcase.

If you are gonna flush the crankcase then do it when the cylinders are removed, through the same opening that the dirt fell in. Turn the motor upside down to flush out.

 

Don't put diesel into the opening where the dipstick goes... I would just split the cases if it were me.

 

good luck and happy holidays

 

 

 

 

LOL. I hear u.....ikinda figured it out.....

....all I know bout the bottom end is through research

but thanks dude. That'd be pretty bad to drop in some diesel. In the trans

I think Ima flush it a few times

 

I knoow its half ass but i think it'll be allright.

I wanted to wait til summer to do a complete. Teardown

 

Happpy holidays to you and everybody else on here

any more advice toowards not spplitting cases is cool too.

[04zSpittinKlotz]

i would use gas or mixed gas imo instead of diesel, i mean thats what is in there normally and wouldnt dry out the bearings. even if you split the cases it would still be hard to make sure you got it all outta the bearings, id flush it probably 10 times if it were me. i wouldnt rotate the crank the first few times just try to shake that heavy bassterd around and dump it, then rotate it and dump. also after you feel like your done rotate the crank to see if you can feel any "grindage" lol and if you still have the other jug on id leave it on for the douching would be easier to rotate the crank without worrying anout the other rod floppin around

[bansheesandrider]

i would use gas or mixed gas imo instead of diesel, i mean thats what is in there normally and wouldnt dry out the bearings. even if you split the cases it would still be hard to make sure you got it all outta the bearings, id flush it probably 10 times if it were me. i wouldnt rotate the crank the first few times just try to shake that heavy bassterd around and dump it, then rotate it and dump. also after you feel like your done rotate the crank to see if you can feel any "grindage" lol and if you still have the other jug on id leave it on for the douching would be easier to rotate the crank without worrying anout the other rod floppin around

The problem with using mixed gas is that you will still have oil in the crankcase that will cause the sand to stick the cases, crank, bearings and seals. If he really does not want to split the cases, I would wash it out with clean solvent and/or alcohol, then blow it dry with air. Once you are satisfied that it is clean and it turns over smoothly, I would dump 2 stroke oil in the crankcase, enough to fill it about 1/2 way and then turn the crank to make sure it is all lubed. After letting it soak for awhile dump out the oil and you should be fine.

[Larry's Shee]

I would split the cases, you're only talking 20 nuts and bolts. Try to find a parts washer you can use or pay to have it cleaned. One grain of sand will destroy a bearing. Lots of difference between dust in the air and sand, 80 grit vs 2500. Please do not use gas as a cleaning solvent, you are inviting, no begging, for a disaster to fuck you up . And I'm not talking about a stupid motor. Use diesel or kerosene only.