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Old 09-19-2007, 09:24 PM
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Chevy water neck bolts torque

I can't find an answer to this anywhere! What the heck should I torque the bolts to on a O-ring water neck for small block Chevy? I've found somebody else asking this question, and some one told him to 'torque to spec'! Great answer! I've searched this site and googled the subject. I've found specs for every engine part, except the water neck!
This is a new Mr. Gasket neck, going onto an Edelbrock aluminum manifold.
I've read all the various views regarding silicone-no silicone, ring alone or with gasket, bolts vs studs, aftermarket vs OEM, etc, so you don't need to go there.

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Old 09-19-2007, 09:33 PM
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I dunno the answer, I'm just not near my books right now, but . . . I put an Edelbrock performer intake on my truck when I put the new cam in. I found the original water neck was highly corroded when I took it off and I couldn't believe it didn't leak. I bought a new water neck with an o-ring and that darn thing has always seeped! I've siliconed, formagasket #2d, used FelPro PermaSeal gaskets, etc. and it just seeps!

I just gotta order a new water neck from LMC truck I guess!

Anyway, anyone else have problems with these o-ring water necks???
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Old 09-19-2007, 09:45 PM
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Torque spec

Tighten until the bolt starts to strip then back it off 1/2 turn. (Just joking)
Try 20 foot pounds, if the seal leaks tighten the bolts to 25, if it still leaks there's something wrong with the seal. Not all fasteners have readily accessible torque specs.
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Old 09-19-2007, 09:53 PM
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Most of the aftermarket chrome ones with or without the o-ring are mostly crap. Very few seal correctly. Put them on a flat surface and they all seem to rock. I would like to know who makes a good one !
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Old 09-19-2007, 10:10 PM
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Quote:
Originally Posted by GCD1962
Most of the aftermarket chrome ones with or without the o-ring are mostly crap. Very few seal correctly. Put them on a flat surface and they all seem to rock. I would like to know who makes a good one !
So would I!

I thought about getting one from LMC truck - I'm guessing a lot of their stuff is nos?
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Old 09-19-2007, 10:35 PM
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Bolt Torques

Most Small Block Chevys Use 3/8" Bolts On The Water Outlet Depending On The Hardness Of The Bolt It Should Go As Followed A Grade 5 Bolt Should Hold 30 To 35 Foot Pounds Of Torque, A Grade Eight Bolt Should Hold 40 To 45 Foot Pounds Of Torque. The Grade Of The Bolt Is Determined By The Number Of Lines On The Head Of The Bolt Plus Two So A Bolt With Three Lines Is A Grade Five A Bolt With Six Lines Is A Grade Eight. If Seepage Is A Problem On A Perfectly Flat Surface With Some Sand Paper You Can True The Surface Of The Water Neck,also When Using Steel Bolts With Aluminum Manifolds Use Some Never Seize Or Liquid Teflon On The Bolt Threads To Prevent The Bolt From Seizing And Destroying The Threads. Hope This Helps.
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Old 09-20-2007, 02:20 PM
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Thanks. I'll try the 20-25 foot pounds.
Great bolt info, Z-mann62! I'll save that for future reference.
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Old 09-20-2007, 02:27 PM
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Just tighten the %^#$ thing....lol....come on.....who breaks out the torque wrench to change a thermostat? Might be over thinking things a bit.....lol
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Old 09-20-2007, 02:28 PM
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LMC truck parts are great I ordered a new stock intake and water neck and I havent had a leak yet (touch wood and whistle).. I torqued the bolts to 30 ft lbs

Hope this helps

Ed
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Old 09-20-2007, 03:15 PM
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Quote:
Originally Posted by BBCMudbogger
Just tighten the %^#$ thing....lol....come on.....who breaks out the torque wrench to change a thermostat? Might be over thinking things a bit.....lol
I do! I torque about anything I have a number for!

It's not that hard - the torque wrench is right there with the rest of the tools!
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Old 09-21-2007, 01:39 PM
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Quote:
Originally Posted by BBCMudbogger
Just tighten the %^#$ thing....lol....come on.....who breaks out the torque wrench to change a thermostat? Might be over thinking things a bit.....lol
The main reason I asked about proper torque, was because while I was resarching water neck gasket info, I saw a lot of comments about leakage due to over-torqueing.
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Old 09-21-2007, 03:31 PM
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I guess the feel just comes with experience. Since I have been working on cars which is at least the last 15 years I have never had any leaky water necks or used a torque wrench on them.....sorry for sounding like a jerk....lol
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Old 09-25-2007, 11:46 AM
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Torque Wrench

Do You Even Know What A Torque Wrench Is ?
After All In 30 Years Of Experience I Found There Is A Right Way And A Wrong Way !

Sorry It I Sound Like A Jerk
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Old 09-25-2007, 12:10 PM
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Is It Cool To Capitalize The First Letter Of Every Word Too ??
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Old 09-25-2007, 01:18 PM
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Quote:
Originally Posted by Z-MANN62
Do You Even Know What A Torque Wrench Is ?
It's pronouced "Tor-KAY" and they're made in France, right?

Sorry, just couldn't resist!
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