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Old 06-27-2003, 12:20 AM
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Default BB question

Are there any bolts on a BB that go into the water passages? I want to make sure everything is good to go before I paint the engine.
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Old 06-27-2003, 12:39 AM
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Most of your exhaust bolts hit water. also some in front of the engine where the water pup attaches.
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Old 06-27-2003, 02:13 AM
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I've also found that intake bolts will leak oil sometimes(they open into the push rod area)

I think I'll put a bit of sealant on those, the next time I do an intake. Assuming I remember
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Old 06-27-2003, 09:42 AM
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Quote:
Originally posted by dave571
I've also found that intake bolts will leak oil sometimes(they open into the push rod area)

I think I'll put a bit of sealant on those, the next time I do an intake. Assuming I remember
Dave putting sealant on the bolts may give you a false torque reading
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Old 06-27-2003, 11:20 AM
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Quote:
Originally posted by 23T


Dave putting sealant on the bolts may give you a false torque reading

I guess I have never torqued the intake manifold bolts........ever! I always started in the middle and worked my way criss srossing out to the ends. Never broke,cracked, a intake yet. Maybe i should start. This would be a good poll, See How many people torque them.
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Old 06-27-2003, 11:50 AM
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My dad used to say, tighten a 3/8" bolt to about a grunt, head bolts, two grunts and a fart. I do torque most bolts, but intakes are such a paint to do with anything other than a wrench I rely on my dad's system.
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Old 06-27-2003, 12:17 PM
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Most of the middle intake bolts you can't get a torque wrench on anyway. Get them tight and torque the others. Then tighten one of the others with a wrench to feel how tight and tighten the middle ones about the same by feel. Works for me.
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Old 06-27-2003, 06:18 PM
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No question it may give a false reading.

Equally, I don't think it's too crucial(as the others have indicated)

A head bolt would be a different story, but with the realatively low torque values on an intake, I think the sealant would produce a toque reading, within manufacturers tolerences.

Definately, a valid point to bring up.
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Old 06-28-2003, 12:10 AM
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Well, I already spotted the intake bolts going through the heads and used Permatex thread sealer on them. Torqued to 40lbs just FYI. The two I wasn't sure about are the water pump housing to block and the exhaust manifold bolts. Should I use a high temp sealer on the exhaust bolts?
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Old 06-28-2003, 09:33 AM
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Quote:
Originally posted by WayneT
Well, I already spotted the intake bolts going through the heads and used Permatex thread sealer on them. Torqued to 40lbs just FYI. The two I wasn't sure about are the water pump housing to block and the exhaust manifold bolts. Should I use a high temp sealer on the exhaust bolts?
I would, I use copper coat paste
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Old 06-28-2003, 10:24 AM
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Never used sealer on the intake bolts, figured nothing but crankcase pressure on em. The torque specs, however, always spooked me. 45 is OK on a gr 8 SAE rod bolt but 40 on a USS in a thin section of cast iron makes me nervous. I've heli-coiled several so I use an end wrench, and a short one at that. Don't think the w/p hsg bolts go to water, but the ex man studs definitely do.
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