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Birdmanhere
Samba Member
Joined: June 03, 2006
Posts: 1054
Location: CANADA EH
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 Posted: Mon Sep 10, 2007 1:13 pm Post subject: cleaning out sludge in a old motor |
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HI all,
I just revived a 5 year sitting 1600 single port motor that i got for $50!
rebuilt the carb, checked the endplay and got it fired right up, runs amazing, strong compression, definetly better than the 1600 dp i had.
My question is when I took the oil plate off there was a good layer of sludge built up and I figure it is all over the bottom of the case.
I cleaned the oil plate but would like to clean the rest of it out.
Is there a good detergent oil or additive I can use to get it out or once it is loose it would just travel all over and wreck the motor...
Oil currently is rotella 15/40.
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crofty
Judas of the North
Joined: August 09, 2000
Posts: 19672
Location: Land of Whine and Phonies
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| Posted: Mon Sep 10, 2007 1:16 pm Post subject: |
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I've added ATF and Risolene with pretty good results.
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Birdmanhere
Samba Member
Joined: June 03, 2006
Posts: 1054
Location: CANADA EH
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| Posted: Mon Sep 10, 2007 1:18 pm Post subject: |
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I heard of using ATF before, how long would you run it in there and then change the oil?
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crofty
Judas of the North
Joined: August 09, 2000
Posts: 19672
Location: Land of Whine and Phonies
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| Posted: Mon Sep 10, 2007 1:32 pm Post subject: |
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| Birdmanhere wrote: |
| I heard of using ATF before, how long would you run it in there and then change the oil? |
I ran it for a couple hundred miles but i only used a .5 quart.
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| HamburgerBrad wrote: |
I slept on crofty's tent once. I passed out drunk from two bottles of Everett's brother's wine. |
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Daddybus
Samba Member
Joined: June 15, 2000
Posts: 1653
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| Posted: Mon Sep 10, 2007 1:42 pm Post subject: cleaning case |
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| I use gunk engine cleaner. You add it to the oil and let the motor idle for 5 mintues (no load, don't drive it, just idling in the driveway). Drain the oil and add new oil. I once started a 1500 that had been sitting 10+ years. Drained the sludge/oil, added new oil and a can of gunk, ran the motor, drained the oil and repeated the process. After two runs of oil and gunk cleaner, the motor was clean and I added fresh oil and a new battery, some brake fluid (pumped the brakes up) and drove it home...my first bus...it now belongs to Eric K. in Colorado. |
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BarryL 
Samba Member
Joined: November 01, 2004
Posts: 14259
Location: Casa de Oro, California
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| Posted: Mon Sep 10, 2007 2:55 pm Post subject: |
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| Sheesh. You put Gunk in an engine. And you ran it to boot? I didn't know you should put it any where but on the outside of stuff or soaking stuff then hose it off. Old timers used to say to leave the sludge alone and run non detergent till a rebuild. I don't even know if anyone still sells non detergent. |
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TimGud
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Joined: March 03, 2002
Posts: 6459
Location: Rio Rico Arizona
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| Posted: Mon Sep 10, 2007 3:12 pm Post subject: |
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| crofty wrote: |
| Birdmanhere wrote: |
| I heard of using ATF before, how long would you run it in there and then change the oil? |
I ran it for a couple hundred miles but i only used a .5 quart. |
This is the method I was taught 30 years ago. It works. |
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Stocknazi
Samba Member
Joined: June 18, 2004
Posts: 5150
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| Posted: Mon Sep 10, 2007 3:16 pm Post subject: |
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you will get plenty of opinions when it comes to removing sludge from your motor. you could remove the top cylinder covers and check for mice nests under the tin, also blocking the cooler. after 5 years i would bet there was something under there. remove the cooler and flush it out with gas/kerosene. you could also remove the valve covers and use carb cleaner to remove what is in there. best thing you can do is really baby that motor and stay off the freeway until it has a few hundred miles on it. stick to short drives of 20-30 minutes at a time and allow for a cool down in between. keep a check on the oil and change it as soon as it gets dirty. could be 50 miles, could be 200. the 15-40 rotella oil should be fine.
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Birdmanhere
Samba Member
Joined: June 03, 2006
Posts: 1054
Location: CANADA EH
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| Posted: Mon Sep 10, 2007 3:38 pm Post subject: |
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| StockNazi wrote: |
| you will get plenty of opinions when it comes to removing sludge from your motor. you could remove the top cylinder covers and check for mice nests under the tin, also blocking the cooler. after 5 years i would bet there was something under there. remove the cooler and flush it out with gas/kerosene. you could also remove the valve covers and use carb cleaner to remove what is in there. best thing you can do is really baby that motor and stay off the freeway until it has a few hundred miles on it. stick to short drives of 20-30 minutes at a time and allow for a cool down in between. keep a check on the oil and change it as soon as it gets dirty. could be 50 miles, could be 200. the 15-40 rotella oil should be fine. |
When i got it I took everything off leaving it a long block, power washed the longblock and all the tin with a treatment of castrol super clean, cleaned out the valve cover, adjusted the valves, timing, endplay, put all the new stuff from my old motor on(dist, fuel pump, alt, exhaust etc)
There were some mice nest in there got them out.
put it all back together, dumped the oil that was in it out and cleaned the screen, filled it up and changed it again in about 50 miles, oil was still clean and no new particles in the screen.
Runs good and cool, just want the sludge out.
Going to go get some ATF and give it a try
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