Follow the torque sequences and specifications in the Manufacturers Manual. Failure to do so may cause head gasket failure, leaking head gasket or even crack the cylinder head.
Fill the cooling system and bleed the cooling system per the Manufacturers Instructions. Failure to do so will create air pockets that will cause the cylinder head to crack. Very Important. When it is time to start the engine for the first time allow the engine to run at an idle between rpm for about 15 minutes to allow the system to build appropriate pressure. Need help? Where it was offered as an alternative to the 7.
It was a step up from the standard 5. The V10 originally added around 55 horsepower and 75 pound-feet of torque to the Excursion. The Ford V10 is an iron-block, overhead-cam aluminum head with mounted spark plugs. Most of the accessory components are shared with the 5. But many of the — models have a major design flaw in the spark plug threads.
The aluminum design expands at a different rate than the steel spark plugs. The spark plugins are also in a 5 inch deep well which only allows 4 threads worth of spark plugin engagement.
Another problem with the spark plugs is the will weld to the threads after repeated heat cycling. Make sure the head is not off more than 0. If the head is out-of-flat more than 0. You don't want a mirror smooth finish on a flat head, nor do you want too rough a texture either. A slight texture on a flat head tends to grip the gasket and that's what you need. We install them with a light coating of chassis grease smeared across them and that's all.
If you let the sealer dry and then install the gasket, it can cause leaks. Check the condition of the studs and nuts. Grade 8 studs and nuts will hold the torque value the best. The correct way to install the studs is just finger tight. Do Not Tighten. If tightened, the stud can cock over at an angle as it will tend to seat on the runout of the thread. Screwed all the way in finger tight utilizes the maximum amount of available threads in these old blocks and provides the correct length above the block for the stud to be correctly above the head to accept the nut and protrude a couple threads above it, assuming of course that the studs, nuts and the head are made to original Ford specifications.
If the stud hole threads are badly worn or damaged, then correct them with the proper inserts. Using a light, examine the sides and the bottom or base of the stud holes. Allow the RTV to dry overnight after the studs are installed. Make sure the stud bosses where the nuts make contact are free of paint and are smooth clean metal. Apply a drop of motor oil to each boss so the bottom of the nut can slide on it.
Lube the stud and nut threads with motor oil. Torque in sequence following the pattern below. Start with finger tight on each, then say 20 pounds or so on each, then 40, then a final amount of 60 pounds on a Regular Brumfield head 5.
As referenced above, the torque values recommended are the most reliable for Brumfield Heads; even more if the block gasket surface is out of flat a little more than I like to see.
In addition, 65 pounds of torque on Brumfield Super Heads, 6. And while it is true that all Model A block threads are old and many are not in good shape, the reason for failure typically lies in the mechanic or installer not knowing how to check if the holes will take the required torque.
All edges on the spacer should be chamfered and the block surface should be clean. The stud and nut threads should be lubed with motor oil. Put the spacer over the hole , screw the short stud all the way in finger tight, put on the hard, high nut and torque to the required torque amount. If any block threads pull or distort you cannot screw the test stud out by hand, thus revealing the hole needed a proper insert before the test if at least original Ford strength was or is desired.
They can stand up to pounds of torque and do not pull out! The bottom line is if the threads in the stud holes will not stand the required torque due to being fatigued from age, worn, worn out, stripped or rotted then replace them with proper inserts into solid metal so correct and faultless torque amounts can be utilized and maintained whether the head is stock or higher compression.
Do not use a gasket beneath the water neck.
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