I work exclusively on mitsubishi 4 and 6 cylinder turbo engines and I have a few questions concerning combustion chamber and piston design. The stock combustion chamber on the engine is a pent roof design and the typical piston design used to date in these motors has been a round dish design...
I am building an engine currently for one of my customers who drives in the open rally class, The engine is a 4g63 Mitsu with a big 16G turbo. The class allows any engine mods to the stock block etc, as long as the compressor inlet on the turbo is reduced to 34MM. Since I have to make a new...
We are building a destroked V6 by offset grinding the crank journals and having custom rods made. The new diameter of the journal is the same as another engine we work with often however the width of the rod is .200" less. If we wanted to use the bearings from that application, is there a good...
We are having custom rods and pistons made for a full out drag engine and are also planning to have the crank knife edged. We do this on a regular basis with the 4 cylinders we build however this engine is a V6 and requires a bit more work. The questions I have are.Is there a good way to...
I have heard in the past that a reduction in intake temperature of 10 degrees roughly translates to an increase in power of around 1%. My question is if this is at all accurate or if there is a better formula for determining power gains from intake temp reduction.
In a discussion on another...
I am going to be destroking a quad cam V6 soon and I am concerned about this engines history of spun rod bearings. The bearing speed will be lower due to the offset grinding to destroke it. I would assume that itself would help some. I was considering having additional notches cut in the rods...
I have been digging information on design for a dry sump pan for a DOHC V6. I have discussed dividing the mains into separate compartments based on the it's current use in Pro Stock showing improvements in power.(The source for help works for a large pan manufacturer) I am short a few design...
