four.six and five.four Ford Modular Engine Builders Upgrade to Head Studs!

It appears like in today's higher Performance industry energy adders are the easiest way to make Several horsepower with no entirely rebuilding the engine. But additional horsepower puts far more pressure on the bolts that hold the head to the block. Studs can resolve this dilemma.

A lot of makers are now supplying bolt on further horsepower of anyplace from 50 to 300 a lot more horsepower for the incredibly well known Ford Ford Explorer Workshop Manual Workshop Manual Workshop Manual Mustang four.six Modular Engines by bolting on a supercharger, turbocharger, or nitrous oxide. The customer is beneath the impression that it incredibly is just a bolt on and go kit. And in Many situations it can be. In particular with the milder horsepower upgrades, driven conservatively, a kit could possibly be nicely suited for no a lot more add ons other than a tuning upgrade.

Anytime I supply a quote for a four.six Ford Ford Explorer Workshop Manual Workshop Manual Workshop Manual Modular Engine getting constructed for use with a energy adder I normally propose that the engine be upgraded to involve aftermarket head bolt studs. The factory head fasteners are not capable of adequate clamping force to hold the head securely to the block for the enhanced cylinder head pressures brought on by the energy adder. When the engine is creating additional horsepower and has extra cylinder anxiety, the head is attempting to "lift" off the block with every explosion in the head chamber.

Keep in mind in higher college when they told you about Newton's Third Law of Motion? The third law states that for each action (force) in nature there is an equal and opposite reaction. In this case the "reaction" is the force attempting to "lift" the head off the block. As the force to push the piston down increases so does the force to "lift" the head increase. Make sense?

It becomes the "vicious cycle" of engine building. The stock fasteners cannot hold the head effectively so you blow a head gasket. The head has some harm and you have it machined a couple of thousandths. Now the head is extra susceptible to blow yet another head gasket since the compression has elevated a bit from the machining. Once more you shave the head and the method repeats itself till a single day a person suggests that you use an aftermarket set of head studs that can give sufficient clamping force stopping the head from lifting off the block.

Head studs need to be installed on any Ford Ford Explorer Workshop Manual Workshop Manual Workshop Manual Modular four.six and five.four Engine exactly where a energy adder has been installed. Head studs are offered for all Modular engines. The most well known head studs are manufactured by ARP and are readily available by means of the hyperlink at the finish of this report.

Dave Metlika has been in the higher Performance engine components market for more than 40 years and at the moment writes a weblog detailing some of his experiences. http://enginebuilderdeals.blogspot.com/

ARP Head Studs for Ford four.six and five.four Modular Engines can be located at http://www.modmaxracing.com/category_s/181.htm.