Tips on replacing head gasket on 360???
#497739
10/15/09 10:39 AM
10/15/09 10:39 AM
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Joined: Jul 2007
Posts: 406 Houma, Louisiana
twister360
OP
mopar
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OP
mopar
Joined: Jul 2007
Posts: 406
Houma, Louisiana
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It has been determined by an old Mopar mechanic that the head gasket on my 360 Magnum motor is bad on the drivers side and I have purchased the parts to replace. What are the steps to disassemble and reassemble? I would like to start on this this weekend.
Thanks
My car 74 Duster mild 360/904/3.91 13.44/101.54
Son's car 75 Dart Sport 318/904/4.10 looking for a 360 or 408
2004 Dodge Ram 1500 Laramie 5.7
2010 Dodge Challenger R/T Classic B-5 6 speed
2010 Jeep SRT8 for the little wife
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Re: Tips on replacing head gasket on 360???
[Re: twister360]
#497741
10/15/09 12:56 PM
10/15/09 12:56 PM
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Joined: Dec 2008
Posts: 2,782 USA
JoesMopar
master
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master
Joined: Dec 2008
Posts: 2,782
USA
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Disconnect your battery
Drain as much of your coolant as possible.
Remove your carb, kickdown to intake linkage, intake etc.
Remove the ground from the front of the head, the exhaust manifold, possibly from the pipe too if you need to.
Remove the valve cover, then the rockershaft assembly.
Take the pushrods out and make sure you mark or put them in an order so they go back to the right lifter AND the correct end down (I like to do that anyway).
Loosen your head bolts but try not to remove the, so you don't get them mixed up, some coolant will probably spill down into the cylinders. Take the head off, you may need to wack the sides gently with a rubber hammer, or there may be a tang you can't pry from a little with a big flatblade screw driver.
Soak up all the anitifreeze off the tops of your pistons. Cover the rest of the motor good and spray some WD-40 on the tops of those pistons and blow it with an air blower from your compressor, just to make sure most the fluid is out. Put a little oil around the edges to keep it from rusting while your working.
Clean the top of the block thouroughly, make sure no trash got into the cylinders, is so, remove it. Do the same to the face of the head.
Clean the top of the block with a good solvent like laquer thinner or etc.
Then do the oppoisite for reassembly. Torque to specs and in recommended sequance for heads, rockershaft, intake, etc.
After your done, do an oil change to make sure no coolant is left in your oil and fill it back up with coolant.
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Re: Tips on replacing head gasket on 360???
[Re: JoesMopar]
#497742
10/15/09 02:04 PM
10/15/09 02:04 PM
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Joined: Apr 2007
Posts: 4,233 petaluma,ca. u.s.a.
west
master
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master
Joined: Apr 2007
Posts: 4,233
petaluma,ca. u.s.a.
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Quote:
Disconnect your battery
Drain as much of your coolant as possible.
Remove your carb, kickdown to intake linkage, intake etc.
Remove the ground from the front of the head, the exhaust manifold, possibly from the pipe too if you need to.
Remove the valve cover, then the rockershaft assembly.
Take the pushrods out and make sure you mark or put them in an order so they go back to the right lifter AND the correct end down (I like to do that anyway).
Loosen your head bolts but try not to remove the, so you don't get them mixed up, some coolant will probably spill down into the cylinders. Take the head off, you may need to wack the sides gently with a rubber hammer, or there may be a tang you can't pry from a little with a big flatblade screw driver.
Soak up all the anitifreeze off the tops of your pistons. Cover the rest of the motor good and spray some WD-40 on the tops of those pistons and blow it with an air blower from your compressor, just to make sure most the fluid is out. Put a little oil around the edges to keep it from rusting while your working.
Clean the top of the block thouroughly, make sure no trash got into the cylinders, is so, remove it. Do the same to the face of the head.
Clean the top of the block with a good solvent like laquer thinner or etc.
Then do the oppoisite for reassembly. Torque to specs and in recommended sequance for heads, rockershaft, intake, etc.
After your done, do an oil change to make sure no coolant is left in your oil and fill it back up with coolant.
you forgot the gasket
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Re: Tips on replacing head gasket on 360???
[Re: west]
#497743
10/15/09 02:33 PM
10/15/09 02:33 PM
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Joined: May 2003
Posts: 15,487 Florida
scratchnfotraction
I Live Here
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I Live Here
Joined: May 2003
Posts: 15,487
Florida
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what yr and vehical is it? magnum 360? Dak...ram 1500...older car ans swaped in the manum? still got the manum keg intake and serp belt? little more to it than an older LA 360,basics are the same but there is a little tid bit of info thats need for the mag stuff like intake bolts only torque to 144 inch pounds..things like that..
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Re: Tips on replacing head gasket on 360???
[Re: twister360]
#497751
10/16/09 11:43 AM
10/16/09 11:43 AM
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Joined: Feb 2003
Posts: 1,095 Bloomington, Illernoise
cptn60
super stock
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super stock
Joined: Feb 2003
Posts: 1,095
Bloomington, Illernoise
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Don't forget to get the cylinder head checked for cracks. we have seen more than a few cracked.
This space available for rent
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Re: Tips on replacing head gasket on 360???
[Re: cptn60]
#497752
10/16/09 04:45 PM
10/16/09 04:45 PM
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Joined: Aug 2007
Posts: 498 El Dorado Ca
65signet
mopar
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mopar
Joined: Aug 2007
Posts: 498
El Dorado Ca
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I would be looking at why the head gasket failed
1965 Plymouth Barracuda 273 M/SA 1970 Plymouth Duster 360/904 10.60s with J heads
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Re: Tips on replacing head gasket on 360???
[Re: RapidRobert]
#497754
10/19/09 10:30 AM
10/19/09 10:30 AM
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Joined: Jul 2007
Posts: 406 Houma, Louisiana
twister360
OP
mopar
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OP
mopar
Joined: Jul 2007
Posts: 406
Houma, Louisiana
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Thanks for all the info.
Too busy this past weekend to get started on the repairs.
My car 74 Duster mild 360/904/3.91 13.44/101.54
Son's car 75 Dart Sport 318/904/4.10 looking for a 360 or 408
2004 Dodge Ram 1500 Laramie 5.7
2010 Dodge Challenger R/T Classic B-5 6 speed
2010 Jeep SRT8 for the little wife
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Re: Tips on replacing head gasket on 360???
[Re: JoesMopar]
#497757
02/28/15 12:14 PM
02/28/15 12:14 PM
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Joined: Mar 2011
Posts: 22 houston, tx
d100clubcab
member
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member
Joined: Mar 2011
Posts: 22
houston, tx
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Quote:
Disconnect your battery
Drain as much of your coolant as possible.
Remove your carb, kickdown to intake linkage, intake etc.
Remove the ground from the front of the head, the exhaust manifold, possibly from the pipe too if you need to.
Remove the valve cover, then the rockershaft assembly.
Take the pushrods out and make sure you mark or put them in an order so they go back to the right lifter AND the correct end down (I like to do that anyway).
Loosen your head bolts but try not to remove them, so you don't get them mixed up, some coolant will probably spill down into the cylinders. Take the head off, you may need to wack the sides gently with a rubber hammer, or there may be a tang you can't pry from a little with a big flatblade screw driver.
Any "easy" way to get these bolts out? I was able to use my cordless impact on a few of them but the ones I need to to do by hand are STUCK
ideas?
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