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I have an alum block 4.6l 2v form a 01 Mountianeer.. I have been told that 02 is the first year for the alum block in the trucks/suv I have not got the engine apart yet, but should have in the next day or 2 I was told it had a blown headgasket Mileage is unknown Asking $200.00 OBO...

How to fix mild pre-detonation on forged pistons. The subject pistons are Wiseco pn 6595M85 +14 cc dish pistons w/ H.D wrist pins 03-07 Evo VIII The pistons came into my shop with slight damage around the thin wall of the eyebrow on the outer edge. They were hung on Eagle rods. To me...

How to R&R pistons and Balance Rods 1G 6 Bolt 4G63T The used rods and pistons, the pistons are being replaced due to cracked and broken ring lands. I start off by marking the front of the rod with a center punch Next is to find the proper sized press pieces to press out the...

ENGINE MACHINE WORK EXPLAINED (part 1) Purpose: I have noticed that many DSM tuners out there are attempting your own engine rebuilds, and many have questions on what machine work to do, how the various types of machining processes differ, and the capabilities of the various machines. This...

Why not to let your head be belt surfaced/sanded This issue will be found with ANY head that is belt surfaced/sanded!! The subject head is a Mitsu 4G63T from an Evo VIII This head was in very good shape to start. The head was pulled due to a bottom end problem. It was not overheated...

I just came across a 4.0 Jag engine this would drop into a Ford 3.9 Block you would get the crank, 8 rods/pistons and the harmonic balancer. $200.00 shipped O.B.O I checked the bearings to those in the 3.9 and they carry the same part number If you have any questions feel free to...

How to resurface a 4G63T Head For a MLS head gasket. I use a Comec Auto I 1000 High Speed Milling Machine with CBN insert for Cast Iron OR a PCD Insert for Aluminum Heads This machine is double adjustable, I can adjust the spindle speed and the table travel speed to achieve the surface...

How to Change Valve Guides In a 4G63 Cylinder Head The first thing is to remove the valves, springs, retainers and locks. The guides are cracked from the bent valves… (Sorry about the pic,) The tools needed for this is an air hammer, a regular hammer, venire calipers...

How to replace a seat in an Aluminum Head The head being worked on is a 2002 Ford Focus 2.0l SOHC This style of head, the “split port” Intake I have seen this as a common problem. The first step is to mount and level the head into the head shop. (I am using a TnS 2000 Head...

I have three 3.9l DOHC Engines that are being pulled apart. The excat years/mileage is Unknown. The engines were pulled and replaced due to Knocking in the bottom end, one block has a window in it Pics can/will be provided upon request I am keeping the heads to rebuild(thats what I do)...

How To Resurface a Flywheel I need to replace the clutch, and I want a “new” clutch surface on my flywheel so the clutch will operate problem free. The first step is to have the flywheel cleaned of oil , grease and grime. This flywheel is in decent shape minimal warp and few hot...

How to lighten a stock cast iron flywheel Start with your stock flywheel, In my case, 2.3L Turbo Ford Its weighs in at 20.5Lbs Lets see how much weight can be cut off…. Next is to remove the clutch plate alignment pins…. A slide hammer works well Mount the...

How an aluminum head is pressure tested for cracks. The subject head is a 5sfe Toyota DOHC The procedure will be the same for any head. First all the old gasket material has to be removed around all the water ports in the head. Head gasket, thermostat, any ports that flow water. This...

How Valve springs are checked I had to check the valve springs for a 4G63T This is a simple process. But a specialized piece of equipment is needed. I use a Rimac spring tester with a 300lbs scale. The first thing to do is set the stop to the correct height. The spec used is...

How to check a head for warp. The first thing to do is remove all carbon and old gasket material. Then with a machinist straight edge, Check all 8 positions. If .003 can be fit under the straight edge, the head needs to be resurfaced. Also Note the fire ring grooves from the head gasket...

Back cutting valves for improved air flow This is a procedure done to help flow the air charge across the back of the valve and smooth the transition into or out of the combustion chamber. Normally don on valves that are not fully machined or swirl polished. Once the valve has had...

Hey all! Glad i found this place!! Sorry But i do not own a Lincoln or a caddy.... But i do dream of having a Hot Rod lincoln oneday, maybe a markVIII ? But what has brought me here is I have a couple of the LS engines 3.9l DOHC I did not know what is needed in the LS...