Modern Automotive Performance
Modern Automotive Performance

Looking at Building Your Evo X? Look No Further!

Posted on 27 April 2015

Darton Iron MID Wet Sleeves for the Mitsubishi Evo X

Click Here to Purchase Your Sleeves  [caption id="attachment_13585" align="aligncenter" width="625"]DSC_3204 Click the Image to Pick up yours Today![/caption]

First off, Wet vs Dry Sleeves. Which is better and why?

Dry Sleeves close off the water jacket. This, of course, means coolant, etc can't surround the cylinder. Wet Sleeves leave the water jacket there, so coolant can surround the cylinder. This allows for proper cooling. The top to the cylinder is closed off. This closes the deck up top, preventing cylinder moment under heavy boost.

In short? Wet sleeves cool better!

With that out of the way lets get to it. Darton MID Sleeves are some of the best sleeves on the market. With superior strength and fitment Their flanged tops align against each other while still allowing coolant to flow through them.

Many production blocks suffer weak cylinder stability due to poor support in the upper deck area. The manufacturing process of typical "cast sleeves" provide for increased power in low horsepower engines, but does not accommodate high horsepower, high boost, or larger bore sizes.

Darton MID Sleeves replace your weaker factory cylinder liners with high strength iron sleeves, eliminating a weak link in your engine and providing you with the strength needed to get the full potential from your setup without losing any sleep worrying about cracking a factory sleeve and taking the engine out.

So lets explain the "Modular Integrated Deck" feature. If you notice the sides of the top of the sleeves are notched so they mate up flush against each other, providing a full rigid structure when assembled, but still able to be replaced individually if needed. The top flange has coolant passages and the outside surface of the sleeve contains "fins" that help reduce heat soak within the sleeve, helping keep the heat out of your internals where it could cause damage cracking or warping.

Please note: ALL Darton Sleeves come from the factory slightly smaller than stock bore. ALL Darton sleeves must be finish bored and honed to the specs of the pistons going into them. Basically You can't install a piston into ANY Darton sleeve the way it arrives from the factory. Your machine shop already knows this, and now so do you!

These sleeves come as a 86mm bore, and can be bored out to 90mm.

These Darton MID kits include:

  • 4 MID Wet Sleeves and the necessary install equipment
  • They also feature:
  • Improved block integral strength
  • Improved cooling
  • "Wet sleeve" replace-ability
  • Increased horsepower output potential
  • Superior oil and compression control
  • Street or strip application
  • Superior cylinder sealing and ring wear
  • Ductile iron w/130,000 psi tensile strength

Finally, Make sure you have your sleeves professionally installed by a notable shop. If sleeves are not installed properly it can lead to major issues down the road.

To wrap things up: sleeving doesn't just add the ability to overbore, but the actual strength of the sleeve is a lot higher than the original sleeve. More power, more strength and more opportunity.

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