engine is frozen - What chemical to use?

1981 xj650 maxim (it has been sitting 10 years, and it ran before it sat)

I Try to turn it by hand and its frozen.

I Try to turn it with the clutch pulled in - frozen
Clutch probably frozen to.

I currently have Marvel mystery oil soaking in spark plug holes, but I think I'm going to need something stronger. MMO does wonders hot but cold Kerosene might be better. Has anyone used Kroil? I have heard really good things about Kroil but its pricey at $80 a gallon. Has anyone used coke/pepsi and kerosene mix? Heard of guys using this.

Kroil is pricey so I might fill it up with straight kerosene for now and soak a weak and see if she gives a little and if nothing move on to Kroil.

Anybody have first hand experience, tips or advice?

Thanks

 

Get aerokroil...2 cans for about $20 http://www.kanolabs.com/late/

 

I'd put 2 Tablespoons of Marvel in the Holes.
Wait an hour.
Remove the Crank Cover.
Put a Wrench of the Square Rotor Flats.
Begin with LIGHT Tapping on the Wrench with a Rubber Mallet.
Clockwise a few hits.
Counterclockwise a few.
Increase the Impact gradually.

A 10-Year sit may be too long without a Layup Prep.

 

Kroil comes in aerosol cans too; http://www.kanolabs.com/google/

But Rick may be right. You may be looking at rings and a hone, and hope the cylinders aren't so rusted as to require a rebore. Plus if it's the bottom end and not the pistons that are stuck, you'd be better off just looking for a viable motor.

 

A mix of 50% automatic transmission fluid and 50% acetone is pretty good to loosen up lots of things, if you already have both ingredients, it is pretty cheap to start with.

 

I completed this first thing Rick. That's why I was thinking of soaking the entire crank case with a kroil mix of some sort before i give it more persuasion. maybe something in the clutch is frozen because when I pull the clutch in gear there is still no turn. I'll go with a can of arokroil down the spark plug holes and a combo of things in the crank case filled to the brim. Set the timer for 7 days and see what happens.

anybody have an extra motor if this all goes to hell?

thanks for the posts

 

I ordered this thanks man

 

Russ; Dude, you live near the ocean? 8O

As much as I swear by Kroil (and it IS THE stuff when no other works) if this all happened within close proximity to a large body of salt water I fear the worst. But diagnose, don't assume.

Guys, let's find this guy a new motor. Non-YICS 650 Maxim, right?

I'm (mostly) kidding. Let's get her broke loose, get a compression test and see where we stand. My 650 sat for 15+ years with little or no prep (numbnuts simply parked it) and it blows happy numbers. Anything's possible.

 

I'm 20 min from the ocean. It Sat with the carbs off the bike and there was no oil in the bike (worst case, i know - Bike was free) The bike was covered with a tarp (I got that going for me :lol: ). I might break down and buy a gallon of kroil to add in the crank case...do you think I could add kerosene with this to fill up the entire case? what would be best to add to fill entire case up? If it is rust (I was thinking maybe giving Evaporust a try. I've used it in gas tanks before and it works with no flash rust left behind, and is safe with gaskets.

I just went out and rocked it back and forth in 1st gear, 2 and 3. (all I can get to). The MMO is pretty much gone from spark plug holes. I had some deep creep in garage so I hit the holes with that. I'll try again tom with rubber hammer and rocking it. Kroil spray cans on the way. Still thinking about the mix to fill entire crank case up with.

Really don't want to do this grease gun trick -

http://www.dansmc.com/stuck_engine.htm

 

There's 1,000 Jap bikes in Floral City - 250 miles to your NW.

Hey - what happened to "Mouse Milk" for dissolving ring rust ??

 

There are some Automotive Forums that swear the 50-50 mix mentioned is just as good as Kroil.

I hope things go your way.
But, I fear the odds are against you.

A decade without "Layup" takes a toll on the Jugs.

 

I have used acetone to clean everything, and I think its in most carb cleaners. I'll give this combo a go and see what happens.

 

mix is in and said my prayers. I'll keep moving bike from side to side, and keep the spark plug holes filled with mix. I'll see if I get any movement tom night.

 

Marvel Mystery oil is what I used on my Honda CL350 that I gave my nephew in 1997 (Running). And all he did was ruin it. Sat 16 years. But now I put a few drops in waited a day & spun the motor slowly. Now it sounds like it has compression. Just need to change oil, do carbs, and just general setup & I believe it will run. So Good Luck cause it might just fool you. And fire right up.

 

I have had marvel mystery oil in the spark plug holes before I even reworked the fuse box (standard practice as pre lube) to try and crank the bike over easier. I use MMO in my truck with every oil change. It really is the best to add with oil and clean. I had a chevy s10 truck run to 255k before I had to sell it and it still ran strong when it sold. I free'd up a sticking valve on a friends car with it to (engine running thou) I highly suggest to anyone with an engine to add it before their next oil change and do your engine a favor. Add it thru your break booster intake 2 as well (just like you would sea foam) Cleans like a boss.

My current mix is MMO, ATF, Acetone. and about to add Diesel fuel for the hell of it. I ordered an air chuck with a 14mm thread that I plan on forcing mix down over the pistons.

I took the valve cover off today (took about an hour with those bolts never being touched) just to see what it looked like. Not bad at all...very very light normal varnish and no rust. so I hit that with MMO and it cleaned right up. I'm thinking about taking the heads off but I fig. I'd wait at least a week for mix to do what it can do.

Clutch has already free'd up a little so time is my best tool right now. I have seen guys on u tube using a Pond pump and a mix of Diesel fuel and MMO. they pump it thru the oil fill hole and out the breather tube. I don't see thou how that would help get the mix to the pistons. The grease gun trick seems to be the standard process for that but I'm going to try to use this air chuck tool with low pressure until it does the same job. Its in the mail, $10 on ebay. sound good? Only thing else I could think of was tilting the engine forward until I felt the mix was working its way past the pistons from bottom to top.

 

I'm watching to see if you end up using the beet juice (Evapo-rust).........if you do, and if it does, then I'll go ahead and try it with a tractor engine that's set up.

Otherwise, it's probably gonna sit til I get some and try it anyway.........but that'll be awhile.

Dave F

 

I would use PB blaster, that stuff works miracles. I freed up a 30 year old snowmobile engine with it. I was able to use a rubber mallet on the piston after letting it soak for 2 weeks, adding as the pb got used up. In your case you could possibly use a brass drift to try and free the pistons.

 

That is a really good way to damage a piston crown. Aluminum is much softer than brass. If an alloy engine won't move by turning the crank (even after soaking) then it's time to gently persuade the head off, or time to find a replacement engine.

 

I wouldn't use a brass drift..........a block of wood is what we've used on tractors------

 

Rickcomatic...I had a feeling you would be right. Its been sitting with a bunch of different lubes...not budging... Nothing cutting the old mustard In that ol gal. I've been busy with life and finally got some time. I'm looking for used engines to swap out. What year xj650/750 Motor would swap out ok? I'm in school and don't have the time and space to break apart an engine. I would think replacing parts inside would be costly. Your thoughts Rick.

I am looking at this on ebay. Not sure what year it is yet. http://cgi.ebay.com/ws/eBayISAPI.dll?Vi ... ink:top:en

 

Evapo-rust ..I completely forgot about that. Maybe I'll flush and toss it in just to experiment....I tell ya though Id rather toss some C4 in catch a show.