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fastener torquing Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Automotive Repair>> Car Troubleshooting PTO Anonymous Poster ptopto1215@peoplepc.com Feb 6, 2008, 11:07 AM Post #1 of 4 (1097 views) fastener torquing Sign In I'm torquing engine bolts in an unheated garage. The temperature is about 35 degrees in there. My concern is with the headbolts. I used permatex thread sealer on the headbolts to a '76 sb chevy 400 and the bolts are ARP. Will the low temp cause the liquid sealer to thicken and possibly change the torque reading when torquing the headbolts? I realize I might be concerned needlessly but figured I'd ask anyway. My thinking is to torque them cold while everything is at the same ambient temp, rather than fire up the bullet heater and wait for everything to come up to about 50-60 degrees, and risk having the unpainted block and heads start sweating. Any thoughts? Tom Greenleaf Ultimate Carjunky / Moderator Feb 6, 2008, 12:29 PM Post #2 of 4 (1091 views) Re: fastener torquing Sign In First off I'm not sure. I do think it's more important for the general temp of everything be about the same. If you just heated the shop it could take ages for a whole block to come up to a uniform temp. I doubt thread sealer will be that much of a concern with accurate torque readings. See how hard they fight with just starting them should be a good indication. That's a tad chilly for working with tools and everything that cold. I did do a waterpump in shifts of in and out of a house in 10 below zero air - that will be the last of that thank you! See what other's think on this. Good luck, T Guest Anonymous Poster ptopto1215@peoplepc.com Feb 6, 2008, 3:25 PM Post #3 of 4 (1090 views) Re: fastener torquing Sign In Tom, yes it is frigid. Not 10 below frigid, but chilly enough for my taste! Those were my thoughts as well, about the time to come up to temp with the heater. Block was recently machined and cleaned and I tapped all holes so the bolts went in with no real effort. I'll torque 'em down and they should be good. Thanks for the second opinion. pete way2old Veteran / Moderator Feb 6, 2008, 4:46 PM Post #4 of 4 (1086 views) Re: fastener torquing Sign In I have to agree with Tom. If the sealant is not gelled, it should not matter if it is 65 or 35. I think you will be OK. I replaced rod and main bearings in a Ford 360 in teen temperatures and the engine had no problems. But like Tom, I am not going to do it again. Being way2old is why I need help from younger minds   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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