Head Bolts Replace? - JeepForum.com

 
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post #1 of 5 Old 10-22-2004, 07:59 AM Thread Starter
jedwards
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Head Bolts Replace?

Good morning. I just found out last night that the head on the 90 laredo I just bought is warped and the valve seals are bad. The machine shop is going to mill down that head to remove the warpage and redo the seals. I noticed in the chilton manual that is says to replace the head bolts after the second use, should I do this? Where is the best place to get the bolts (chrysler wants $121 for them).

Also the head was already disassembled when I got the jeep, so how do I know which bolt goes where (since there are 4 different types/lengths)?

It also says to use a sealant on each of the bolts and loctite 592 on bolt number 11, any suggestions on what type of sealant?

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post #2 of 5 Old 10-22-2004, 08:49 AM
gumby
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do this

Replace the head bolts you don't have to get them from the dealer. you can buy
Grade 8 or harder bolts from a machine shop or Napa ETC... get a sample from your old ones. should not be that expensive

1984 CJ-7 offroad special loves to get dirty and play rough. unlike the girls I meet
258 rebuilt with torquer cam/ weber 32/36 carb, HEI ignition ,headers 4 in lift AMC 20 detroit rear locked and trussed / tru trax front 4:56 Gears ,solid axles on 35's

"Two roads diverged in a wood and I - I took the one less traveled by, and that has made all the difference."-
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post #3 of 5 Old 10-22-2004, 09:10 AM Thread Starter
jedwards
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Bolts

What about the ones that seem like studs (bolt with thread then a nut then more thread)? Does this type serve a purpose?
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post #4 of 5 Old 10-22-2004, 03:06 PM
gumby
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Threaded studs offer a more even torque application not prone to streching or uneven pulling. because your tightening them down against the head where a bolt is pulling the head down to the block

1984 CJ-7 offroad special loves to get dirty and play rough. unlike the girls I meet
258 rebuilt with torquer cam/ weber 32/36 carb, HEI ignition ,headers 4 in lift AMC 20 detroit rear locked and trussed / tru trax front 4:56 Gears ,solid axles on 35's

"Two roads diverged in a wood and I - I took the one less traveled by, and that has made all the difference."-
Robert Frost
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post #5 of 5 Old 10-23-2004, 07:46 PM
75SV1
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I think the ones with the threads are for the wire support for the Injectors. There should be two or three black plastic post with a 'C' at the top. These slip over those threaded bolts. On the Newer bolts 96+ (I think), two of them have a post or dowel sticking uo from the bolts. These align the rubber valve cover gasket. It doesn't apply to your year, but just in case.
Tom
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