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Old December 15th, 2009, 12:06 PM
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Default yukon : head replacement

head replacement
Post by yukon on Oct 12, 2006, 10:10am

any tips, tricks, things to look out for, or manual pages to help replace a head on the 230 6 cyl? I've never dealt with an overhead cam before. thanks
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Old December 15th, 2009, 12:06 PM
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Re: head replacement
Post by hiker on Oct 12, 2006, 2:09pm

Yukon, Some quick thoughts. Before disassembly, set the engine to Top Dead Center on the compression stroke for a good reference point when reassembling the engine. After you take the valve cover off, look at the relationship of the cam timing gear mark (dimple?) and the cam lobe for #1 cylinder. You'll notice that there is only one lobe for each cylinder and #1 lobe is pointed straight down. You will leave the timing gear and chain together resting in the timing cover. Use tie wraps through the holes in the timing gear and wrap around the chain to keep it from jumping a tooth. It's been a while since doing this but I don't think the gear will slip down into the timing cover. Maybe others will confirm. Otherwise, support the gear or wedge something to keep the gear from dropping down. The head is heavy. . . get help. Don't just drag it off the side, because the pistons are slightly domed and may get damaged. Two of the head bolt holes in the head are a tighter "close tolerance" fit to aid in head alignment. One in front, and one in the back. All other bolt holes are a loose fit. pay attention to the front and rear head bolts, they may all be the same, if not keep them in order.
good luck, Robert-CA
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Old December 15th, 2009, 12:06 PM
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Re: head replacement
Post by hiker on Oct 13, 2006, 12:48pm

AB Linn sells the valve cover gasket, new production. You can also try Memphis Equipment.
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Old December 15th, 2009, 12:06 PM
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Re: head replacement
Post by brute4c on Oct 13, 2006, 12:52pm

VPW is worth checking too....
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Old December 15th, 2009, 12:06 PM
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Re: head replacement
Post by hiker on Oct 13, 2006, 1:03pm

here's a head gasket from NAPA for a non shaved head/block: www.napaonline.com/masterpages/NOLMaster.aspx?PageId=470&LineCode=NGA&PartNumber=3844BS&Description=Cylinder+Head+Ga sket

They also have the valve cover gasket but I can't get the link to work correctly from here.

Copy and paste the address, or go to NAPAonline.com and look up "head gasket" without the quotes '63 kaiser jeep, engine gaskets & seals, 6-230

Robert-ca
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Old December 15th, 2009, 12:06 PM
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Re: head replacement
Post by brute4c on Oct 13, 2006, 1:24pm

The civvy head gasket doesnt fit the mil head...unless one wants to silicone the front corners of the head and block....the mil head has triangles that protrude from both sides at the front, timing cover, end. The mil gasket has the "wings" for this area where the civvy one doesnt...the civvy head wont even cover the entire opening on the back of the timing cover that the mil head does...


The valve cover gasket is fine...
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Old December 15th, 2009, 12:06 PM
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Re: head replacement
Post by hiker on Oct 13, 2006, 1:47pm

The NAPA picture shows the "wings" on the front of the gasket. Jon, you are correct as usual, years ago I did use a civilian head gasket with fillers up front just as you have said. I'm interested in what really is available.
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Old December 15th, 2009, 12:07 PM
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Re: head replacement
Post by brute4c on Oct 13, 2006, 2:06pm

Interesting they have the wings....have to order one and see...a definite maybe on that one...
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Old December 15th, 2009, 12:07 PM
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Re: head replacement
Post by hiker on Oct 13, 2006, 2:16pm

Edited post above with picture.
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Old December 15th, 2009, 12:07 PM
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Re: head replacement
Post by yukon on Oct 13, 2006, 3:47pm

thanks for the help. i've ordered the head gasket and valve cover gasket from napa. i'll let you know how they work out and if they indeed look like the picture.
 

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