My question is, would adding cold oil to a warm engine cause the head to warp and or crack?

I finally replaced my headgasket and stupid me I never checked the head for warpage. its an om615 in a 66 200d.

With the radiator cap off the coolant bubbles like its boiling even at first start up and there is very little smoke. what smoke there is with the radiator cap off is a light blue in color which could be IP timing since i just redid the injectors.

With the engine running and I put the radiator cap securely on she runs ok for approx. 20-30 seconds then the RPM's dropp a little and then theres a huge amount of white smoke that comes out of the tailpipe. If I remove the radiator cap it takes around a minute for the rpm's to return and for the white cloud to go away.

when I had the head off I saw no cracks anwhere on the head, but I'm unsure now if that really is any kind of indication of the state of the head since I did'nt bother to even check the flatness of the head.

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For everything I've ever done there has always been a first time.

66 MB 200d
65 VW T2 Deluxe
76 VW T2 Westfalia

it's definitely leaking coolant into the combustion chamber..

with the cap off the radiator, combustion gasses are entering the cooling system and leaving through the cap.

with the cap on, the pressure of the hot coolant forces the coolant into the combustion chamber, causing white smoke and a drop in RPMs because the coolant is reducing the amount of combustion being that it is an "inert" substance in the combustion chamber taking up the combustion's room.

sounds like you have a decent leak in your head gasket. hopefully someone can prove me wrong and you won't have to swap heads!

what does the exhaust smell like when it's pouring white smoke? what does the coolant smell like when the coolant is bubbling?

syringe some coolant out from the radiator, if it is really dark or black, you'll know your head gasket is leaking.

if the exhaust has a sweet smell to it (wen it's coming out white), you're burning coolant.



sorry to hear this man, smells like warped head to me

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cold oil in warm engine....Doubtful. it would have to be pretty darn cold for it to do anything IF anything to the engine..

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hum.....
1987 300TD 311,000M Stolen. Presumed destroyed

to your origional question (sorry i got on a rant and forgot.. )

adding cold oil to a hot engine shouldn't give you problems. i mean unless you keep your oil in the freezer haha jokes aside, i really don't think it's a huge no-no. people do it all the time when they change their oil while the engine is hot.

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If your oil was really cold you wouldn't be able to remove from the container, say at temperatures of -100 F. But you will never hurt even a very hot head with the addition of oil. In many heat treating processes when they want to bring the temperature of steel from very hot, say 1400 to 2000 degrees F, they do it by rapidly quenching the piece in oil at room temperature and it doesn't damage the piece. Try that with water, and first of all you will have an explosion, secondly the piece would be junk.

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Junqueyardjim
Christianity, if false, is of no importance, and if true, of infinite importance. The only thing it cannot be is moderately important. C.S. Lewis



1983 Mercedes W123 240D 4 Speed 285,000 on the road with a 617 turbo, beautiful butter yellow, license plate # 83 240D INDIANA

2003 Jaguar Type X, AWD. beautiful, good mileage,
Mom's car, but I won't let her drive it!

not an issue, the coolant in the head is WAAAAY colder than the oil could be. also, a hot engine is not over 180F waay below what would be needed to damage the head.
UNLESS you were out of coolant, and you got the block over heated, then the thing would likely warp on it's own. no oil needed.

sure sounds like something is not right with your head. I'd pull it and take it to a good machine shop. they can grind the gasket surface flat... but make sure they check the cam journals. if the head is warped it could cause the came journals to be out of alignment. this could cause came failure.

I good machine shop should be able to identify any problems you may have, and correct them.

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Looks like I know what I'm doing again this weekend. Has anybody used Bearing Service Co. in Portland before. If so how was the work and even more of a concern at this moment how was the price? What does it cost to have one of these heads worked on?

I pretty sure I allready know the answer, but I'll need a new head gasket since the one on there has been torqued down, even though its been ran for approx. 5-10 minutes

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For everything I've ever done there has always been a first time.

66 MB 200d
65 VW T2 Deluxe
76 VW T2 Westfalia

not all gaskets need replacement just from being torqued. the issue is if you've had plenty of exhaust flowing across the cracked/warped area.

Get them to check for cracks. I guess you did a visual inspection. Often you need to do a proper crack test to find them.

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Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving

Magnaflux

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1982 240D 4spd, 327,000mi

X3 sounds like a cracked head. The cracks are not always easy to see with the naked eye and sometimes not visible at all with the naked eye.

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

Just a second thought!
Why did you change the head gasket ? Was there a problem?
What did the old gasket look like?
Have you tensioned the new one correctly? Replaced bolts if stretched?

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Grumpy Old Diesel Owners Club group

I no longer question authority, I annoy authority. More effect, less effort....

1967 230-6 auto parts car. rust bucket.
1980 300D now parts car 800k miles
1984 300D 500k miles
1987 250td 160k miles English import
2001 jeep turbo diesel 130k miles
1998 jeep tdi ~ followed me home. Needs a turbo.
1968 Ford F750 truck. 6-354 diesel conversion.
Other toys ~J.D.,Cat & GM ~ mainly earth moving

I don't think you can magnaflux aluminum items... xray or something similar needs to be done for this I think...

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!

According to user ForcedInduction on the forum superturbodiesel.com, the OM615 uses a cast-iron head.

Source:
http://www.superturbodiesel.com/std/archive/index.php/thread-214.html

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1982 240D 4spd, 327,000mi