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| 1999 Suburban Specs anyone?; Tioghening torques for heads | |
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| Tweet Topic Started: Sep 10 2014, 12:16 AM (1,025 Views) | |
| CaptainMetro | Sep 10 2014, 12:16 AM Post #1 |
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Does anyone have a copy of the tightening torques and sequence for a 1999 Suburban, 5.7 litre? Just got the cylinder heads back from the machine shop, #4 exhaust valve was seized in the valve guide. They put seat inserts for all the exhaust valves. It got a little hot, somebody mixed Dexcool with green antifreeze; caused some major blockage in the block. I'm going to flush the whole system out with dish washing detergent after I get it together. |
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| Old Man | Sep 10 2014, 01:46 AM Post #2 |
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I googled -- 1999 Suburban headbolt torque -- and the following came up: http://www.justanswer.com/chevy/10nxx-1999-chevy-suburban-c1500-old-body-stye-5-7.html |
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| vr4 | Sep 10 2014, 10:44 AM Post #3 |
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Mixing dex with green didn't cause your problem |
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| Good bye | Sep 10 2014, 10:49 AM Post #4 |
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The problem with anti-freeze is that it is a maintenance item. Most people NEVER change their anti-freeze. Green is every 2 years, Dex-cool is 5 years not 15 years! |
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| CaptainMetro | Sep 12 2014, 12:45 AM Post #5 |
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You are in correct, the service records are impeccable as my brother-in-law spent thousands on maintenance on this rig. He just went to the wrong guy for a few things. The coolant was drained and refilled 3 or 4 times, unfortunately they didn't flush the system when they converted it. Don't need any specs, I just bought a Mitchell shop manual for domestic (1999) vehicles for $20, a really good deal! |
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| Old Man | Sep 12 2014, 09:39 AM Post #6 |
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My most neglected maintenance item. Bought a new 2001 Ford Ranger---its STILL running on factory coolant. Guess I am "most people"
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| vr4 | Sep 12 2014, 12:08 PM Post #7 |
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My 15 years experience as a professional seeing mixed dex not do a damn thing says otherwise. Might want to check your intake gaskets. They're cracked (or once were) at the coolant ports |
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| CaptainMetro | Sep 12 2014, 12:26 PM Post #8 |
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Nope. |
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