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the head has been changed three times (it was discontinued after 2003, replaced by the 2.2 L Ecotec). Our kit comes complete with 10 head studs, 10 parallel ground washers, 10 nuts and a small packet of assembly lubricant. Deciphering The Differences In The Chevy 2.2L Engine.
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#2.2 ecotect head gasket set professional
It costs a lot more to do it this way, because it's tough on tooling, but the results are well worth the extra effort.Ĭlearly, these are the best head stud kits on the market today, and the favorite of leading professional engine builders in all forms of racing. They prevent the coolant and engine oil from leaking into the cylinders, and thus play a crucial role in ensuring the performance of your engine. These small components are located between the engine block and cylinder head in an internal combustion engine. Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned - something that won't happen with inferior quality head studs.ĪRP studs are thread rolled AFTER heat-treat, which give them about 1,000% (that's ten times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). Im replacing a timing chain on my daughters 04 sunfire with a 2.2 ecotec. Head gaskets are an essential part of the engine of your car. It's important to note that lesser quality studs are not even centerless ground - the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). This procedure involves about ten very slight cuts and results in an exceptionally straight part.
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This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.įollowing heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. Then, each stud is placed vertically in special racks and precisely heat-treated to 190,000 psi. If the budget allows, get a new radiator or have the old one cleaned out, when the intake gaskets leak they often let oil into the cooling system. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to 'aircraft' quality. cometic mls head gasket set to suit holden ecotec l36 l67 supercharged 3.8l v6 470.00 holden performance memcal to suit vt v6 145.00 ls1 throttle body adaptor to suit vn-vy v6 & vs-vy l67 190.00 brand new genuine holden v6 ecotec/l67 cranks 395.00 standard camshaft bearings to suit holden commodore vs vu vt vx vy ecotec 3.8l v6. Get the heads reconditioned, I guarantee you will notice the difference in how it runs. Simply stated, there is not a better stud setup on the market today. Our Head Stud Kits are manufactured by Automotive Racing Products (a.k.a. Lower Gasket Set 06-16 GM Buick Chevy GMT Ecotec Z22SE L61 L42 LSJ LNF 2.2 2.4 (Fits: Chevrolet Cobalt) 29.00 Fits 05-09 Nissan Frontier Xterra Suzuki 4. Because the head gasket will compress on initial torquing, make sure studs and bolts are re-torqued after the engine has been run Then, when applying torque to the nut, the stud will stretch only on the vertical axis. Head Gaskets Kit Set Holden Ecotec & L67 3. If everything is right, the stud should be installed finger tight using any Teflon-based thread sealant ( NOT thread locker). Accordingly, the bolt is reacting to two different forces simultaneously.Ī head stud should be installed in a 'relaxed' mode - never crank it in tightly using a jammed nut. When you use bolts to secure the head, the fastener is actually being 'twisted' while it is being torqued to the proper reading. Studs provide for easier gasket and head alignment during reassembly, and more accurate and consistent torque loading. Instead of buying new factory bolts, we strongly recommend head studs. Buy Remanufactured GM Chevy 2.2 DOHC Ecotec Cylinder Head Cavalier Cobalt Saturn ION W/Head Gasket Set & Head Bolt Kit (CORE RETURN REQUIRED) online at an. Engine oil leaks around the head may also signal a problem. Why Use Studs Instead of Factory Head Bolts?įactory head bolts are 'torque-to-yield' bolts, intended to be used only one time, and then discarded.