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You are watching: 2001 chevy s10 4.3 oil pump replacement


1998 2.2L 5 speed 2wd S10 bought new and offered in 2007, ns should have actually kept it.2001 black Blazer 4wd 2 door, 2.5" RC lift and also 2" BL. 33x9.5r15"s ~ above Z28 wheels, minor fender work to clear. RC steering stabilizer. An ext on the list...

The oil press is pretty great but i wouldn"t mind it gift a tiny higher, 15-40psi depending on the rpm. I haven"t adjusted the oil so maybe thicker oil would help. I think ns will simply replace the pump, castle aren"t expensive.The oil pan gasket is leaking together well and I just don"t see just how it might be addressed without removed the front diff so i might too replace it.The oil cooler lines are on my perform too, I arrangement to repair them as soon as they space off.Any proposal on what brand pump and timing chain? additionally are there any type of pitfalls to protect against while replacing these parts? many thanks again for the help.
1998 2.2L 5 rate 2wd S10 bought new and offered in 2007, ns should have actually kept it.2001 black color Blazer 4wd 2 door, 2.5" RC lift and 2" BL. 33x9.5r15"s on Z28 wheels, boy fender work to clear. RC steering stabilizer. More on the list...

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IMO, a 4WD automobile needs a high volume pump. However, true Melling choose high volume pumps space .300" longer than a Melling traditional or a high push pump and they have a distinct HD casting. If a high volume pump is installed, the oil pump choose up screen assembly will not to the right the 9-1/4" deep oil pan. The is difficult to find an aftermarket choose up assembly that will certainly fit the oil pan through 3/8" to 1/2" bottom clearance.I installed the adhering to when my engine to be rebuilt and also I had to cut and shorten the oil choose up tube by 1/2" and also wire weld the shortened tube ago together. The deep pan ~ above the 4WD and also longer pick up assembly is an ext subject to engine vibration and also failure, particularly in off-road, high performance street and competition applications. The lengthy oil pump pick-up assembly in 4WD oil pans needs added bracing and reinforcing. The extra plumbing with a 4WD oil cooler and also remote filter requirements a 10% greater volume -standard press oil pump. The Melling 25% greater volume pump is not required and also neither is the "C" collection competition Melling oil pump. Melling pick #10552 oil pump, high pressure, HD casting, 3/4" inlet, requires the Melling 259S pick up pipe shortened 1/2" or a custom developed pick increase assembly created a 9-1/4" deep oil pan. The Melling select #10552 oil pump additionally has a spur gears that room doweled into the bottom plate. Melling pick up display screen assembly, #259S, 3/4" pipe, perform NOT to attempt to use a Melling bolt-on form pick up.It is risky and it will not fit. Remove by-pass spring and piston then braze or cable weld pick as much as pump. It is not essential to remove the bottom plate. The Melling bolt-on choose up assembly will certainly not fit the oil pan and also the weak brazed bolt-on mounting bowl is a weak design. Push the pick-up tube into the oil pump making use of the Melling MCAT-75 tool through Loctite #640 . Jegs #23621 oil pump pick up retainer and also brace.Bolt the retainer to the oil pump bottom plate and weld the retainer come pick-up tube. An employee in ~ Jegs designed these braces and also they are not created or sold everywhere else. Wire tack weld the brace to the pick up tube and also toss the bolt. That is OK to bolt the brace to the bottom of the oil pump using Loctite #640. The bottom key bolts space a special type that will break of over torqued. That stays clear of the threads in the oil pump casting from pulling if the bottom plate bolts space over torqued. Load the spur gear cavity through petroleum jelly and also torque bottom bowl bolts to 7 lb./in (80 in/lb) maximum. Use a inch pound micro-torque wrench because a foot pound wrench is inaccurate that low. Melling 1S-55E, oil pump drive shaft, hardened through steel sleeve (if the oil pump does not come through one) ARP 230-7003 oil pump mounting stud because that high volume pump, 65 lb./ft hex-nut torque.Summit #111480 soft copper gasketSince you space going to the trouble to replace the oil pan, don"t pass up the chance to carry out these ultimate up-grades. These up grades may it is in over-kill for a daily driver through high mileage. If that is the case, leave the stock oil pump in-place and don"t deal with it if that ain"t broke.