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Old 12-07-2010, 07:38 PM
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This is a lot of sludge...

Pulled the valley plate on a 57 Caddy 365, I knew I'd find sludge but not this much...
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Old 12-07-2010, 07:53 PM
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yikes!
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Old 12-07-2010, 07:53 PM
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That was typical back in the day. Pretty much went away when closed crankcase ventilation came into play. Along with better oils
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Old 12-07-2010, 07:57 PM
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K and K,

I have seen this many times in the OLD cars.
They run colder than cars now is the first thing. Not changing the oil enough. We were taught to change our oil every 2 to 3 thousand miles but some people did not put on that many miles so they did not change the oil. Also
oils BACK then was non-detergent. So sludge would build up faster.
You are in for some DIRTY work here.

Good Luck in the clean-up

Scholman
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Old 12-07-2010, 07:57 PM
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Quote:
Originally Posted by artsvettes
That was typical back in the day. Pretty much went away when closed crankcase ventilation came into play. Along with better oils
Closed crankcase ventilation, such as pcv valves where cc pressure isn't routed straight to atmosphere? How would this affect sludge build up? I was under the impression this was always due to running bad and old oil? What really affects it?
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Old 12-07-2010, 07:59 PM
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Quote:
Originally Posted by scholman
K and K,

I have seen this many times in the OLD cars.
They run colder than cars now is the first thing. Not changing the oil enough. We were taught to change our oil every 2 to 3 thousand miles but some people did not put on that many miles so they did not change the oil. Also
oils BACK then was non-detergent. So sludge would build up faster.
You are in for some DIRTY work here.

Good Luck in the clean-up

Scholman
Retired
When I started the motor before I picked up the car I heard squeeks in the valvetrain under the driver side v/c. Found lots of sludge on top of the heads with no oil getting up two of the push rods to two of the rockers, so I suspected it'd be nasty under the valley plate. Cleaned the heads good with seafoam and reamed out the p/r's with safety wire.
Oil flowed up all rods good then.
After I put the covers back on with new gaskets I found it seeping at the rear of the v/c's. Pulled the covers again to find that ALL oil getting pumped up to the rockers was staying up there because the oil drain back ports were plugged! Reamed that all out as well. Drains back now.
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Old 12-07-2010, 08:33 PM
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A lot of the old oils had parrifin in them. basically it is wax. It would build up like crazy if not changed regularly. It was not unusual to pull apart old engines and see stuff exactly like that. I remember pulling the valve covers off a late 60's mopar and they were literally full except where the rockers were moving in the sludge.
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Old 12-07-2010, 11:11 PM
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64 5 bolt 289 no PCV

My 64 289 w/ road draft ventilation was rebuilt over 10 years ago.
The oil gets black quick but I haven't noticed sludge build up.
May rig up a temporary PCV one day.
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Old 12-07-2010, 11:48 PM
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Quote:
Originally Posted by T-bucket23
A lot of the old oils had parrifin in them. basically it is wax. It would build up like crazy if not changed regularly. It was not unusual to pull apart old engines and see stuff exactly like that. I remember pulling the valve covers off a late 60's mopar and they were literally full except where the rockers were moving in the sludge.
Chet, I bought an old 60 Chevy Van w/I6 years ago. It was the same, V-covers filled to the top except where the rockers moved. My Dad said the same thing, (Good ole paraffin oil). I was about 16 at the time. I started to clean the crud out & He stopped me & said unless you're gonna drop the pan you better leave it alone. It had Quaker State oil cans everywhere inside.
Todd
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Old 12-08-2010, 03:21 AM
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I'll bet Superman could squeeze that into diamonds!
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Old 12-08-2010, 06:42 AM
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Quote:
Originally Posted by SSedan64
Chet, I bought an old 60 Chevy Van w/I6 years ago. It was the same, V-covers filled to the top except where the rockers moved. My Dad said the same thing, (Good ole paraffin oil). I was about 16 at the time. I started to clean the crud out & He stopped me & said unless you're gonna drop the pan you better leave it alone. It had Quaker State oil cans everywhere inside.
Todd
A lot of people lost engines when the high detergent oils first came out. It would start to loosen up all that crap, plug the oil pickup and boom. I was in trade school in the early 70's and we did a lot of Ford engines with completely plugged screens. Usually not to long after an oil change with high detergent oil.
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Old 12-08-2010, 10:04 AM
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Quote:
Originally Posted by SSedan64
It had Quaker State oil cans everywhere inside.
Todd
Yup go old Quaker State I see the commercials today and slug pops into the minds eye.... and the cure the kerosine flush?
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Old 12-08-2010, 10:27 AM
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did that motor have a filter on it or was that a pre-filter engine?

that motor might benifit from 2 qts oil and 3 qts of kerosene run through it
warm it up, drive it (no hills) and drain it while it's hot

i've done this on older motors bought from the jy
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Old 12-08-2010, 10:35 AM
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I remember building Y-blocks for dirt track in the late 60's and finding worse than that from Shell oil,one was so bad the sludge was all the way to the bottom of the valley cover and filled up a water bucket after we scraped it out.
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Old 12-08-2010, 05:52 PM
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Quote:
Originally Posted by artsvettes
That was typical back in the day. Pretty much went away when closed crankcase ventilation came into play. Along with better oils
several years back i pulled the valve covers off of a 302 79 t bird and you could see the ford emblem imprinted in the sludge. You could barely see the rocker arms. I put the covers on and administered last rights.
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