440 guys I need your help
03-13-2009, 03:54 PM
#1
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440 guys I need your help
Im just starting to work on a 71 d100 truck came with a 6cyl and i put in a 360 out of a 78 van, i bought a motorhome 1978 with a 440 to put in the truck it has 40,000 miles on it it runs great, but runs hot, so after a new rad. clutch fan and a flush new water pump the works, it still runs hot. No water in oil or oil in water, i put a temp gage in the block and there was rust in water jacket so i flushed it again and again the motor runs like new and dont miss a lick, a friend at the parts house said the block was stopped up with rust and said i could pull the intake off and stick a pressure washer in the water ports and free up the rust. Is this possiable im new to the 440s and dont know much about them HELPPPPPPPPPPPPPPPPP (grin) I would be greatful of any ideas
03-13-2009, 07:21 PM
#3
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have a 190 got from parts house its new i also put a new 180 as well as tryed without I can crank this thing up and the water is hot after 2 min I drove it with the temp outside in the upper 40s and it never ran hot drove over 100 miles
Last edited by hmadic; 03-13-2009 at 07:25 PM. Reason: forgot to put something in
03-13-2009, 07:43 PM
#4
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[quote=hmadic;15065]Im just starting to work on a 71 d100 truck came with a 6cyl and i put in a 360 out of a 78 van, i bought a motorhome 1978 with a 440 to put in the truck it has 40,000 miles on it it runs great, but runs hot, so after a new rad. clutch ...
Does it seem to be low on power too?
Does it seem to be low on power too?
03-13-2009, 08:05 PM
#6
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I would not under any circumstance power wash with the intake off, I jacked my block up when I power washed my block with all the old stuff on it, had to have the cylinders bored out as I couldn't hone out the rust. If anything I would pull the water pump housing and shoot the water through there. Also have you thought about changing the water pump?
03-13-2009, 08:31 PM
#7
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Im just starting to work on a 71 d100 truck came with a 6cyl and i put in a 360 out of a 78 van, i bought a motorhome 1978 with a 440 to put in the truck it has 40,000 miles on it it runs great, but runs hot, so after a new rad. clutch fan and a flush new water pump the works, it still runs hot. No water in oil or oil in water, i put a temp gage in the block and there was rust in water jacket so i flushed it again and again the motor runs like new and dont miss a lick, a friend at the parts house said the block was stopped up with rust and said i could pull the intake off and stick a pressure washer in the water ports and free up the rust. Is this possiable im new to the 440s and dont know much about them HELPPPPPPPPPPPPPPPPP (grin) I would be greatful of any ideas
03-13-2009, 08:32 PM
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Water pump is new, Ive never ran into this problem before on any motor. Friend told me that the water jackets in the 440s were bad to stop up with rust the motor only has 40,000 miles on it I hate to tare it down just to unstop it it leaks nothing and runs great it just runs hot. Im new to the 440s my 1st one got it at a good deal
03-13-2009, 08:46 PM
#10
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Water pump is new, Ive never ran into this problem before on any motor. Friend told me that the water jackets in the 440s were bad to stop up with rust the motor only has 40,000 miles on it I hate to tare it down just to unstop it it leaks nothing and runs great it just runs hot. Im new to the 440s my 1st one got it at a good deal
How big is the radiator? [sounds like its stopped up though because of how fast it heats up.] How hot does it get? Does it spew antifreeze when it heats up? When does it run hot, in traffic? going down the road at steady speed? How close is the fan to the radiator? Do you have a fan shroud?
03-13-2009, 09:06 PM
#11
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new 4 flue radiator new shroud it will hit 180 degrees in about 3 to 5 min at and idle and as long as its cool outside in the upper 40s wont run hot at all also brand new 7 blade fan sits about 2in from radiator. I drove it about 50 miles with the outside temp in the 50s and it ran hot when i say ran hot it hit 210 and was climbing fast so by the time i got pulled over it was at 220 or so so i let it cool down to make it home another 5 miles
03-13-2009, 10:53 PM
#13
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id say thats a pretty good question.
dude, if you think theres rust in there, i wouldnt remove the intake, id just do like that one guy said and just spray it around in there, hopefully you can get some of the gunk out. you might be able to find come chemical that cleans the rust outta waterjackets from like kragen or something.
and another thing - it sounds like whoever had that 440 before you used too much water in the rad and not enough anti-freeze.
redline might have something that will help remove rust and allow the radiator to run cooler
dude, if you think theres rust in there, i wouldnt remove the intake, id just do like that one guy said and just spray it around in there, hopefully you can get some of the gunk out. you might be able to find come chemical that cleans the rust outta waterjackets from like kragen or something.
and another thing - it sounds like whoever had that 440 before you used too much water in the rad and not enough anti-freeze.
redline might have something that will help remove rust and allow the radiator to run cooler
03-14-2009, 09:28 AM
#14
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I have a B&M Flex Fan on the motor I had a clutch fan (new) still ran hot so I bought the stright Flex fan so it would pull more air. Im sure there is rust in the water jackets Im not sure how hard its gonna be to get it out, so far no luck, I hate to do a rebuild with only 40,000 miles on the motor ive been told that the back water jackets get stopped up and wont let the water circulate through the block and it lets the motor over heat but this is my 1st 440 so im new
03-14-2009, 02:49 PM
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Rad hoses aren't collapsing on ya are they ? How's the timing, a little too much advance will warm em up. When you first start the engine (cold) take the rad cap off, are you seeing circulation ?
Do you have a shroud on the rad ?
Do you have a shroud on the rad ?
03-14-2009, 03:14 PM
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New everything as far as the cooling system goes, as far as the timeing never been messed with only 40,000 it has had the carb changed has a elderbrock put on it the this is a 4bl motor if that helps. I have never run across a motor like this before it has a grimlin in it (grin)
03-14-2009, 03:49 PM
#17
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I just tore down and rebuilt my 440 with 38k miles, the holes where the housing met up wasn't cleaned up and there was some leftover metal from the casting, and also minimal metal scale.
What I recommend for you to gauge what's in there before you do anything else would be to pull the radiator hoses and the water neck and spray your hose in there and see what comes out. (I know you flushed it, but keep doing it until nothing comes out) Also maybe change up your antifreeze mixture.
One benefit of pulling the housing is that you can narrow it down to one side or the other as long as there is no cross over.
What I recommend for you to gauge what's in there before you do anything else would be to pull the radiator hoses and the water neck and spray your hose in there and see what comes out. (I know you flushed it, but keep doing it until nothing comes out) Also maybe change up your antifreeze mixture.
One benefit of pulling the housing is that you can narrow it down to one side or the other as long as there is no cross over.
03-14-2009, 04:09 PM
#18
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there is no cross over that I see (i guessing you mean cross over pipe. Where im at now is popping out the back freeze plugs and see if i can clean out the block that way, the motor is still in so it may be a pain I love the motor lots of power i know it will be fun when fixed
03-14-2009, 07:04 PM
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It sounds like you have a circulation problem. I would start the engine, bring it up to temp, when the engine gets to temp fell the air off the fan and see rather it is cold or warm. If its cold then the water is not flowing through the t-stat. If you have ran it with out the t-stat then I would look at the waterpump. Did you change any of the Belt routing and make things run backwards? If its not the waterpump then i would pull the waterpump housing. see how much build up is in the holes becuase about however much rust is in the holes of the water pump housing is how much you will find in the block. If you have good flow and the t-stat is installed right then you might have a crack. I had a cracked cylinder in an 8.3 liter Cummins that would overheat and not blow and water out the overflow. So I hoped this helped good luck and hope to here what fixes it
03-14-2009, 07:32 PM
#21
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heres what i have found out so far the 440s were bad to stop up if they set for long periods of time by this i mean the water jackets would fill with rust and reg flush just wont cut it. any ideas?
Last edited by hmadic; 03-14-2009 at 07:33 PM. Reason: i caint spell
03-14-2009, 08:23 PM
#22
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there is no cross over that I see (i guessing you mean cross over pipe. Where im at now is popping out the back freeze plugs and see if i can clean out the block that way, the motor is still in so it may be a pain I love the motor lots of power i know it will be fun when fixed
03-14-2009, 08:37 PM
#23
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440 flush
Im at that point now Ive been told the back water jackets are the ones that stop up the worst. I dont know how well this will work (I HAVE NOT TRYED THIS YET) but and old guy i know (loves dodge) said he had a dodge wrecker that stoped up and he drained the anti freeze out took out t-stat and filled with water and a pound of lye and drove it about 10 miles came back and flushed flushed flushed with water put back in t-stat refilled with anti freeze and it never ran hot again will it work? i dont know but there should be something that will cut the rust out. But what?
03-14-2009, 09:22 PM
#25
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yea I know I just think here has to be a way to flush a block out with out alot of trouble. the only thing thats not factory parts is carb it and edelbrock and its new this thing runs great it just runs hot
Last edited by hmadic; 03-14-2009 at 09:23 PM. Reason: caint spell
03-15-2009, 02:19 AM
#26
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RV 440... isn't there something about extra water flow thru the heads on an RV? I can't remember exactly, but it seems there is something about the front freeze plugs being replaced with water hoses to have flow thru the heads. Might check that in a search on here.
Also, a clutch fan will flow more air than a flex fan, especially at higher rpm.
Also, a clutch fan will flow more air than a flex fan, especially at higher rpm.
03-15-2009, 08:10 AM
#29
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RV 440... isn't there something about extra water flow thru the heads on an RV? I can't remember exactly, but it seems there is something about the front freeze plugs being replaced with water hoses to have flow thru the heads. Might check that in a search on here.
Also, a clutch fan will flow more air than a flex fan, especially at higher rpm.
Also, a clutch fan will flow more air than a flex fan, especially at higher rpm.
