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Re-torquing head bolts can prevent head gasket failure. Some manufacturers have issued technical service bulletins describing the procedure. (See Saab example here: http://www.saabnet.com/tsn/members/gallery.html?memberID=112&do=show&id=369 ) Reducing the tension on bolts one at a time (But not all the way.), then tightening in sequence is often done, particularly on engines with aluminum heads. Once the gasket has failed re-torquing is less likely to stop the leak. No. Torque specs are calculated on a new head gasket. If you are experiencing a leak in a head gasket, you would be safe to assume that the gasket has already burned a hole in the gasket.
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What is the torque and tightening pattern when using old bolts to replace the head gasket on a 1989 Chevy S-10 2.5?
You cannot use the old bolts to retorque the heads. They are torqure to yield bolts. You must get new bolts.
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by removing the head bolts
How much is the torque of 2c cylinder head bolts Toyota?
torque for 2c engine cylinder head bolts
Do you need to replace the head bolts when you replace the heads on your 4.0 L V6?
If the engine is high mileage yes, replace the head bolts. If it is low mileage it is your choice, but is always a good idea to replace them.
What is engine head bolts tqures?
Varies by engine. We'd need to know the engine in order to answer this.
Do the head bolts on 86 crx need replaced after head removal?
If it's the Civic CRX 1.5Ltr engine code EW3the head bolts can be reused
What is the torque on head bolts for a 3800 Pontiac engine?
The 3800 Pontiac engine had bolt torque specification is 160 pounds. The head bolts should be torqued in 40 pound intervals.
What causes oil to be on spark plugs in a 88 Toyota supra?
valve cover gaskets OR (usually more likely) the No.3 Cyl Head bolts leaking oil. Take the spark plug valley cover off and thow it out and get some aoil drain plug gaskets for the 14mm hex head bolts and retorque them on, this will solve your proble.
How many bolts to change a head gasket?
Depends on what engine you are working on.
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visual of head bolts on 1999 northstar
1995 Mercury Tracer Torque specs for head bolts?
Torque sequence------------ l 93157 l l 862410 l ------------ Step 1: torque in sequence to 44 Ft/LBS Step 2: in sequence completely loosen all bolts Step : retorque all bolts in sequence to 44 Ft/LBS Step 4: in sequence turn an additional 90 degrees Step 5: in sequence turn an additional 90 degrees Recheck final torque in sequence***CAUTION*** engine uses Torque To yield head bolts (TTY) that permanently stretch during the initial installation. New head bolts must be used when cylinder head is replaced or re-installed to obtain proper torque.
What are the engine torque specs for a c15 cat engine?
A C15 Caterpillar engine has dozens of torque specifications for many different engine bolts. The head bolts should be torqued at 350 pounds.
