Need to know what is the pattern to snug bolts on head gasket

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Head bolt torque specs and pattern

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Jun 6, 2009 - Lancer Engine Tech - Head bolt torque specs and pattern - Hey all. Before anyone flames in case there is a post, I did use the search ...

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Doug, Torquing multiple bolts, like on a cylinder head are shown in last video link.Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
http://www4.briggsandstratton.com/miscpdfs/RNT/Engine%20Specifications%20Chart_ms3992.pdf
FAQ Small Engine Specifications Briggs Stratton Specs
Engine mounting pattern
HOW TO LOOK UP AND TORQUE BRIGGS HEAD
How to replace Briggs Stratton Intek Head Gasket Pt 2

Hi, You dont say which engine But 68 cads use 400+ cubic inch engines. It is the same as the 327.s. This is a very important procedure and MUST be done in stages and in a certain bolt tightening sequence You start at middle top and work your way around the pattern to just snug up the bolts. Then to 25 lbs following pattern Then 50 lbs Untal you reach your correct torque. DO NOT OVER TIGHTEN. You have to go on line (say Auto Zone site) and get the correct pattern and torque .
If you have installed new gaskets make sure they are installed correctly. should say this side up or right and left. If you don't find your spec's on line I can look them up in my goood old school books for you. Mike.

OKAY LOOKING AT OIL PAN FACING SHALLOW END LEFT SIDE STUDS BOLTS SEQUENCE 13 12 11 10 9 BACK BOLTS 8 7 6 5 OKAY 5 BOLTS WILL BE ONE OF THE RIGHT SIDE STUDS STARTING AT 5 BACK STUD THEN BOLT 4 3 2 1 AND FRONT BOLTS ON FRONT OF PAN AFTER 1 BOLT 15 AND BOLT 14. SEE FRONT BOLTS ON FRONT END OF OIL PAN 14 15 AND 1. WRITE NUMBERS DOWN IN THE SEQUENCE I GAVE YOU ON PAPER. DRAW OIL PAN ROUGH DRAFT PUT THE NUMBERS I GAVE YOU I SAME SEQUENCE THATS YOUR OIL PAN BOLTS SEQUENCE.

If the gasket is on the oil pan you may try tightening the bolt. To tighten pan gaskets you'll need to tighten in steps in a crisscross pattern. Snug a bolt move across the pan snug another bolt. Do this until all bolts are snug. Do not over tighten pan gasket bolts or leaks will occur. Just uniformly snuf.

The head bolts are torques to 16.7 lb ft run the bolts in to just snug then starting in the middle and work outwards in a rotational pattern. After running the engine up to temperature shut it off let sit for a few minutes and then re-torques the bolts again in the same pattern.

To replace the rocker box gaskets, you'll have to remove the bolts on top of the rocker boxes to get them off. You may have to remove the fuel tank(s) and seat. You didn't tell me what year and model bike you're working on. Once you have these bolts off, you can replace the gaskets between the center and the upper parts, the inner gasket and the umbrella if your bike is equipped with them.

To replace the gaskets under the lower plate, work with one plate at the time. Remove the spark plugs and jack the rear wheel off the ground. Put the transmission in high gear and bump the engine over until the piston is at top dead center in the cylinder your working on with both vavles closed. Start by removing the three 1/4" hex head bolts and the two 1/4' socket head bolts. Then, remove the 5/16" bolts on the pushrod side of the engine. Tap the rocker shafts out and remove the rocker arms. Remove the other two 5/16" bolts. Lift the lower plate and replace the gaskets. Do not mix up the pushrods. They are usually color coded as to which position they go in.

To reinstall the lower plate, place the rocker box on top of the cylinder and start all bolts except the two 5/16" bolts on the push rod side of the engine. Put the rocker arms in place and push the shafts through them. Start the remaining two bolts. At this point, your lower rocker box plate is "floating" above the cylinder head. Tighten the four large bolts down until they are all flush with the top of the plate. Then, tighten them down 1/4 turn at the time until they are snug. Then, tighten the six smaller bolts down until they are barely snug. Torque the larger bolt to 15-18 foot pounds and the smaller bolts to 10-13 foot pounds. Wait for the tappest to bleed down to where you can turn them by hand to do the other cylinder. Do it the exact same way as you did the first one.

To install the middle and upper plates, put the center gasket and all other gaskets in place and align the plate. Install the socket head bolts in the top and torque to 100 Inch pounds.

Put the transmission in neutral and lower the bike. Reinstall the spark plugs, the tank(s) and the seat.

Good Luck
Steve

Assuming the motor is an inline six
1.Middle bolt is number 1.Clockwise torque to 22 f/lb
2.Same pattern to 45 f/lb
3. same pattern to 100 f/lb
Be sure to use loctite 592 to the threads and some head gasket sealer to both sides of the head gasket.
Hope this helps

Coat threads of left hand front bolt with sealant: 1st - step; - 22 ft./lbs. 2nd - step; - 45 ft./lbs. 3rd - step, all bolts except L.H. front bolt; - 110 ft./lbs. 4th - step, L.H. front bolt; - 100 ft./lbs.

Intake bolt torque is 11-14 foot pounds. Note:
to torque bolts & nuts, start in center using
crisscross pattern working outward. And as Far as the sealant goes, you shouldn't need any additional sealant since the new gasket has sealant.(just make sure both surfaces are clean an free of oil.) sometimes if the head or the block show signs of pitting on the matteing surfaces then you could use a litttle of that cooper spray gasket to coat the new gasket.