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Old 05-25-2004, 01:18 PM
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oil on head bolts and head gasket

like a dumb ***, which is about the way i usually operate, i dipped my bolts in oil on the bottom three threads. my bud says there is no room at the bottom of the holes and the oil could prevent me from getting a proper torque reading but i left everything the way it was. i dont think there was that much to worry about.
what i am worried about was that i left the bolts just sitting in the holes while i torqued down other ones, and i didnt think about it at the time, but what about the oil dripping off the bolt and NOT going down the threaded hole but dripping and running down the face of the head? at this point my head wasnt making contact with the block, it was being held up by the locator pin and i was using the bolts to pull it down. i am pretty sure oil must have dripped in btwn the head and the gasket. i never heard or read that the block surface has to be wiped down with alcohol or anything to get the oil off, so i am wondering, since the holes are RIGHT NEXT to the cylinder, if this is going to cause a leak. i used a blue composition fel-pro head gasket.

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Last edited by bullheimer; 05-25-2004 at 03:10 PM.
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Old 05-25-2004, 01:48 PM
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It could if you are running very high compression etc. Likely it will cause no problem but I do like clean and dry for head gasket installation.

I would disassemble and wipe it down just to be sure, of course if it is already assembled and installed in the car I might think twice and just roll the dice.
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Old 05-25-2004, 02:09 PM
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You did say oil. If they're head bolts you're going to need some sort of sealant on the threads as they go into the water jackets. I'm assuming it's a small Chevy. At least in your journal it looks like one.
I usually just use RTV on the threads and oil under the head of the bolts or between the washer and bolt if it's aftermarket bolts.
I've tried the ARP sealant but prefer silicone.
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Old 05-25-2004, 02:28 PM
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Dont use oil on head bolts!! lol.

Use some sealer on the tip of them and you should be good. I know on chevy motors, all those head bolts in a row on the side of the cylinders screw right into a coolant passage, and I think 2, or 4 of the top ones hit oil.

If you use oil on the head bolts, your gonna end up with either an oil leak, or a coolant leak sooner or later.
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Old 05-25-2004, 02:44 PM
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if any of the top ones hit oil it wont matter cause they are inside the valve cover. as for the bottom ones in the water jacket. i used the bolts i took out and didnt see any signs of anything at all being used on them. i pretty much but them all back together the way i took it apart. i'm more concerned with the chance of a compression leak because oil got on the gasket. it is a 350 chevy. i also know the intake bolts suck too so rtv for them as well? (i DO worry too frikken much ponch, i painted the engine yellow not black, NEXT TIME I'LL KNOW BETTER)

Last edited by bullheimer; 05-25-2004 at 02:54 PM.
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Old 05-25-2004, 02:49 PM
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You worry too friggin' much, man..........................

After all this, get your blood pressure checked.
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Old 05-25-2004, 03:22 PM
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No SBC head bolt holes go to oil. All of them go to coolant except for some of the 1989 & later in which the 4 closest to the lifter valley are blind. You should use a non-hardening sealer such as Permatex Aviation form-a-gasket or #300 or Teflon paste. Silicone is generally not recommended, but some guys use it anyway. A little oil on the underhead of the bolt will aid in getting the proper torque reading.

tom
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Old 05-25-2004, 04:50 PM
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okay:
will blow off the oil on the gasket probability/possibility

just bought the permatex 300 and will shotgun all the bolts

AS SOON AS IT QUITS FRIKKEN RAINING.

YOU BASS-TIDS WIN AGAIN!!!!!!! AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHHH HHHHHHHHHHHHHHHHHHHHHHHHHHH!

Last edited by bullheimer; 05-25-2004 at 08:27 PM.
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