em3rgentOrdr
14.05.2021 16:59:22
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not only replace the fuel lines, replace ALL the water lines as well and go thru every fitting and orfice. chances are the sand made it everywhere in the system. buy new hose, clamps or zip ties and go to town! here
1/2 heater hose for the cooling, poly or tygon for the smaller diameter cooling hoses.
Silicone hose or marine exhaust hose for the exhaust couplers. [links]
4-tech engines have a closed loop system which really cuts down on over heat issues as the cooling water only passes through a heat exchanger, not the engine at all.
good metal tang zip ties and oetiker clamps. You`ll need the tool to install them. [links]
There are many threads about back flushing. Don't recall if there is one that provides great details on it though.
“There are key areas within the block that can have strength and rigidity added to handle the stress of a boosted application. The World Products Man O’War small-block Ford block is a good example of a block that has been designed to handle boost. We made numerous changes to address the shortcomings of the stock pieces, starting with the materials. The iron alloy has been upgraded to a minimum 40,000 psi iron which is vastly stronger than the gray iron used in the stock block, and at least 10,000 psi stronger than the previous versions of Worlds blocks or other aftermarket units. In addition to the stronger alloy, material has been added to the cylinder walls, decks, oil pan rails and main webs,” McInnis says.
Jack McInnis from World Products explains exactly what happens inside an engine when you crank up the boost and where it can put stress internally on the block. more
When boost is introduced into an engine it provides instant horsepower, but it also puts all the other internal parts of the engine under a lot of stress. The engine block has to not only stand up to the boost pressure itself, but it also keep all the internal engine parts in place so they can function correctly.
Adding boost in the form of a turbocharger or supercharger is exponentially easier these days with all the advancements in power-adder technology. The problem is that it has almost become too easy and racers sometimes get a little overzealous with boost and start damaging their engine — including the block in some cases.
“The increased cylinder pressures resulting from superchargers and turbochargers can cause distortion in the cylinder walls during operation. The effects of this distortion are decreased ring seal and possible fatigue and cracking of the bores. Boosted engines are also subject to very high stress to the crankshaft, and main cap retention becomes an issue. Also, the thrust bearing surface of the blocks’ webs and bulkheads are subject to elevated stress levels. The load on the head bolts or studs is also greatly increased and can cause issues with gasket sealing as well as stress to the decks themselves.” more
Most OEM blocks can hold a certain level of boost without any issues, but you will be limited to how much power you can generate. Going with an aftermarket block can allow you to add more boost and power, however, you must ensure block is able to handle what you’re going to try throwing at it.
Learn more about Fel-Pro quality gaskets that are designed for the repair environment, find your car part, or find where to buy your auto part today.
The importance of attaining the appropriate surface finish, one that matches the style of head gasket being used, cannot be overstated. Each type of Fel-Pro head gasket – whether it be PermaTorque® MLS, PermaTorque, solid or perforated core, single layer embossed steel, or other types – all require specific surface finish requirements. If the surface is too smooth, the gasket will have less "grip" and may leak; if the surface is too rough, the gasket will have a difficult time conforming to surface imperfections and may also leak. Surface finish can be checked using a surface finish comparator or a profilometer. Checking the cylinder head surface finish and flatness is an important step to take before installing a head gasket. more
In order to determine an appropriate surface finish, consider the metallurgy of the head and block castings as well as the material and design of the head gasket being used in the install. Different gaskets require different surface finishes, so the surface finish must be matched to the type of gasket that is required for the application. To determine surface finish requirements, consult the OEM repair manual.
Fel-Pro® uses a variety of the latest sealing technologies available to design head gaskets that conform and compensate for minor surface imperfections while being dense enough to maintain even loading between the cylinder head and block. However, even the best head gasket can’t seal a surface that is improperly prepared. Before installing a new head gasket, surface conditions of the engine block and cylinder head must be inspected and refinished if they are out of spec.
Fel-Pro uses proprietary head gasket coatings and facing materials designed to fill in minor surface imperfections and allow for improved sealing on imperfect surfaces found in the repair environment. OEM MLS gaskets work well on new, flat, clean castings, since they require a very smooth surface finish, usually 20-30 Ra or less. more
The engine’s most dynamic and critical seal, the head gasket must withstand high temperatures and casting movement to create a perfect and reliable seal. It not only must contain the extreme cylinder pressures generated during the combustion process, but also has to seal high pressure oil and the oil drain backs, and engine coolant. There are a number of variables that contribute to both the horizontal and vertical motion that occurs between the cylinder head and engine block (deck area).
With the right sleeves, the bore can be increased to 4.125 in. A 4 in. stroke is common, which increases c.i.d. to 427 or 7.0L.
Below are some upgrades that improve the performance of the LS1 and LS6 engines.
1997-2000 LS1 connecting rod bolts are another weak point. In 2001, the LS1 used the stronger LS6 bolts. more
Performance Balanced Rotating Assemblies make the job easier. here