How to plug the crank oil galleysI have spoken out about removing the oil galleys balls in the crank.So once the balls are outSo all the crud can be removed.After you have gotten most of the crud out, spray with brake cleaner.Then use a small brush to scrub the galley. Then spray...

Short block teardown and inspection 7bolt 4g63TI had this short block dropped off at my shop about 8 months ago as a core turn in. The story I was told was it had less than 2000 miles on it. It was shipped in from another machine shop that specializes in the 4g engine.First thing I noticed...

Cut a deal with him on a pile of engine parts. He kept up good communication through the whole deal, easy guy to work with. I would not have any issues working another deal with him.

4G63 Block VentI have read a few threads on adding a block vent to the 4g63. I know this not a new idea, and others have had done it before. I also know that there is a kit so a block vent can be added in at the rear balance shaft timing passage. Some of the locations I have seen used I did...

A look at the 4G63 PCV system Engine internal view.I know this topic has been covered in depth over and over again. DSM Wiseman has a great write up on it from the valve cover out, and covers how the system works. If you have not read it, you need to. clickHow this will differ is looking at...

Pull your balls to properly clean your crankI know this topic has been talked about some. Some say it not needed, but I disagree. The crank for a 4g63 is of the cross drilled design.This means that there is an oil galley through both the main and the rod journal with an intersecting oil...

2G 7 Bolt Oil Squirter Block offIt is common practice in a rebuild to block the oil squirters that are fed from the mains of the 2g 7 bolt blocks. This style of squirter can rob oil from the main bearings if they fail open, or become dislodged from the press fit bores they are installed in...

BSE Block Bearing FlipThis is for a BSE done at the time of the engine build. This will not be the BSE procedure used while the block is still in the car. This is not overly complicated to do, just attention for detail needs to be used.The tools needed are few, *Decent sized hammer *The...

BSE: Front Case PrepIt seems that some of the new guys are having a few issues doing a basic BSE. This is just one step of what needs to be done for a full BSE.This should show the basic steps needed to prep the front case for a BSE.The basics needed *Front case, cleaned *Hammer *Socket...

Cut a deal with him on a "Big Mouth" head. Easy guy to deal with and no issues working a solid deal

Cut a deal on a head, Easy guy to deal with. He even keeps up with communication when he is out of country.

Head Inspection # 10I had a head sent in by a customer that just had the head rebuilt through his tuner. The machine shop that built the head did not have a full understanding of the 4g63 head. This head was built with SuperTech single springs and Kelford 272 cams. For the most part the head...

How to replace a seat in an Aluminum HeadThe 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 Shop) link...

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 procedure...

How to check piston to deck clearanceThe subject is a Toyota 2ZZThe block is being milled to ensure a good gasket sealing surface.The short block must be dry assembled with crank, rods, and pistons. Rod and main bearings are installed, and only the 2nd ring installed.The tools used are a...

Back cutting valves for improved air flowThis 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 the face...

How to R&R pistons and Balance Rods 1G 6 Bolt 4G63TThe 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 punchNext is to find the proper sized press pieces to press out the wrist pins...

Oil port mod #2 for 4G63T The head is a 2g head going on a 1g 6 Bolt short block.This head has had oil port mod 1 done.clickThe head bolt holes have been reamed for the 1g head studs. To prevent any issues with oiling issues in the head, I have reamed the bolt hole that is in the path of...

How to remove a Broken BoltThere are many different methods.This is one of the more common methods using an EZ-OutThis method works best on bolts that broke due to being over tighten. The EZ-out method has little success on cross threaded or rusted bolts.The tools needed are few...

A look at the Manley stroker pistions, Part # 608005c-4I had a customer drop off a set for a build. Manley always seems to have a pretty piece in the box. [/url The box claims that that the pistons weigh in at 296-297gOut of the box they were appox. a gram heavy 297-298g...

How to figure Compression RatioI have noticed very few know what their real compression ratio (CR) is. Most think since they have 9.0:1 pistons, that they have a 9.0:1 CR engine. The pistons in the engine are only one part of the formula. Several other things can affect CR, such as...

This was rather simple to do.... I did not double check the hold downs.. one was not tight enough.......This is /was a Dodge 2.2L/2.5L SOHCNotice the chunk missing from the side of the head??When it was thrown out of the machine, it also shattered the cutter blade ($290.00 later) I...

4G63T Block CorrectionThis block was machined at another shop, then ended up at my shop.To start with the block gasket surface was belt surfaced. I have heard of this being done, but this was the first time I have seen it in person.A longer viewThe hone job was sub par also. But...

How to final wash an Engine BlockYou just picked up your block from the machine shop, and your ready to build your engine. The block may look clean, but it is not. It still has grim and grit from machining in it.It is up to you as the builder to final wash the block.First gather together...

I just had to take pics of this and post.What some people do to cheap out on a build.Take one Honda D16Y6 block and add a cheapskate and mix in one 4" side grinder.The HG surface of the block, Keep in mind this engine runs a factory MLS HG.Closer viewSo I get the block set up, and...

ENGINE MACHINE WORK EXPLAINEDPurpose: 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 is intended...

How to Deck a 4G63 BlockThe block is a 7bolt 4G63TThe block was brought in to be prepped for rebuild.It has been Bored and Honed to .020 over std.Checking the block I found it had .0025 taper from front to back and has water pitting.I set the block on the machine fixture; the block...

In the past week I have torn apart some front cases. I would have thought by now even the newest DSM'er would have found the info on what stubby shaft to run.I know this is not a new topic to cover by any means.STAY AWAY from the ungrooved stubby shaft!!!!This one had to be beat out...

Back cutting valves for improved air flowThis 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 the face...

Checking 4g63 Valve SpringsI have been saving valve springs from several cylinder heads. I decided to check the spring pressure.I tested the valve springs using a 1.560 installed height. For a valve spring to be good I wanted to see a minimum of 60lbsI checked 460 valve springs or...

Valve spring comparison #2 Evo VIII, Stock DSM, Manley, Brian CrowerFrom left to right· Used EVO VIII · Used Stock 4G63 · Used Manley · Used BC1100 · New BC1100The EVO springs, set of 16, tested 58-62 lbs @ 1.530Used stock 4G63 valve spring Appox. 140k miles 56lbs @ 1.530Used...

Valve spring comparison BC1100 HKS StockThe line up is (L to R) BC1100 (NIB) HKS Single appox 10k miles used Stock 2G appox 140k miles Used Kia Looked like a 4G mutant Head, ? miles UsedUsed Stock 2g spring55lbs @ 1.530Kia used spring58lbs @ 1.530HKS60LBS @ 1.530BC1100 New...

How Valve springs are checkedI had to check the valve springs for a 4G63TThis 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 66lbs @ 1.575...

What Happens to a head in a machine shopFirst Not all shops have the same equipment and the procedures from one shop to the next can and will differ. Some shops cater to domestics and others imports or even diesels. Some shops will view everything as a “stock” rebuilds. So…. The most...

Oil port mod #2 for 4G63T The head is a 2g head going on a 1g 6 Bolt short block.This head has had oil port mod 1 done.linkThe head bolt holes have been reamed for the 1g head studs. To prevent any issues with oiling issues in the head, I have reamed the bolt hole that is in the path of...

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 finish...

Why not to let your head be belt surfaced/sandedThe 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. It was taken to another shop, NOT mine. The customer was told it was surfaced...

4G63T Head Oil Port Modification #1This is a simple and effective mod done to the oil port from block to head.I have found out a restriction can occur when excessive milling of the head has been done. Resulting in low/poor oil flow through the cylinder head that can cause lifter tic, cam...

4G63 Dropped Valve Head RepairThe Subject head is a 1G 6 bolt head. This head had extensive work done to it and would cost way more to replace than repair.The head was loaded with SuperTech +1mm valves, and duel valve springs and Ti retainers.How the head looked when I received it.A...

How a 4G63 cylinder head is measured for thickness.This is a fairly simple thing to do. This will also help in setting the timing belt and calculate combustion chamber size.New head thickness is 5.200 The Mitsubishi factory manual says a combined total of .008 may be removed from the block...

4g63T Short Block Inspection 6 BoltA customer came in and dropped off a 6 bolt short block. He was feeling a bit “iffy” about the rebuilt short block he had just bought. It was supposed to be drop in and run ready.After a look at it in the back of the truck, we agreed it would be best if I...

How to fluid test a 4G63 HeadThis is a simple and quick way to check for seat and valve seal.First clean the head by the method of your choosing.Once the head is cleaned, blow the runners out with compressed air to remove any carbon, oil or crud that can give a “false” seal.Next lay...

How to Clean a Head Gasket SurfaceThere are many ways to clean a head gasket surface. This is just one way, and it is the method I prefer.I do not like the use of “rol-locs” for cleaning a head gasket surface, for block or head. Cast iron or aluminum.A rol-loc can an will “wave” a gasket...

Hey ya'll!Yep I am a noob!I know a little on the DSM side, but even less on the VR4I had a buddy link me to a build thread over here so I could look at a few things on his VR.So I thought I join.I may not know much, But I am sure I will learn, and I will try to help with what...