Bump for answers...

 

I'm ordering my Evo 6 Mishimoto radiator this week based on your review. I'm getting the Mishimoto Evo 6 upper radiator hose.

On my 1/2 Koyo radiator I just used a straight hose from Gates. Made it impossible to get on with radiator or Tstat housing in place due to the thickness of the Gates hose. I had to lift radiator up and slide hose on as I lowered the radiator. Not a fan.

Also getting my tstat housing tapped. Thanks for the great write ups.

I saw your car on 34 last month getting on it from a stop. I was in the BBY with the cutout.

 

You're welcome; thanks for reading them!

Just wanted to clarify that when I saw a max coolant temperature of 218 degrees on the road course, it was a High Plains Raceway, which is at 5,000 to 5,050 feet of elevation. This is important to note, because at high elevation, the greatly reduced air density means radiators, oil coolers, and intercoolers are much less effective as heat exchangers.

There were guys racing at High Plains Raceway that weekend from outside of Colorado, who had never raced at elevation before, and were having all sorts of issues with overheating—even though they've never had problems with overheating at their home tracks at lower elevation.

I just recently ran a full NASA race weekend at Motorsports Park Hastings (MPH) in Hastings, NE, which is at a substantially lower elevation of only 1,900 feet—still a huge difference from sea level, or within 500 feet of sea level—and my max coolant temp for the entire weekend was only 213 degrees. I only saw that peak temp during the hottest part of the day on Sunday, when air temps were in the high 80s; for the rest of my racing sessions the rest of the weekend, coolant temps never exceeded 208.

I'd like to go on record as saying that MPH is a frickin' great track, BTW. If you're within a 12-hour drive of this road course, I HIGHLY recommend you consider making the trip out to drive it.

It is a unique track that is relatively easy on brakes, and my peak speed was only 130 mph; but the corners are set up in such a way that they feel extremely fast as you try to carry maximum speed through them, and most of the "in-field" corners are linked, so that when you get consecutive corners right, you feel like you're doing 100 mph through them instead of 75 mph, and it's extremely satisfying to boot.


http://www.racemph.com/

A couple pics of my Evo from MPH this past weekend, plus an on-track video clip:

 

Would the radiator hose for the 8/9 work on the 5/6 radiator, just need to rotate it 180 degrees?

 

To help the OP. I just recently replaced my OEM radiator with Mishimoto. The clearance for the OEM fan/fan shroud is tight. The fan shroud touches the turbo because the mounting points for the OEM fan is either long or OEM fan shroud's mounting point is spaced out.

 

I just wanted to chime in on the Mishi Warranty....

Pat at Mishimoto took care of me right away. He sent me a replacement radiator right away after i filled out their warranty form. No questions asked, but how you broke it!

Great Customer Service!

 

Sounds like mishimoto has a top notch warrenty.

 

Was this with the
Evo 4/5/6 radiator
http://www.mishimoto.com/mishimoto-m...tor-4-5-6.html

Or the
Evo 7/8/9 radiator:
http://www.mishimoto.com/mitsubishi-...diator-01.html

Looking at the specs it seems the 4/5/6 (2.55") is slightly thicker than the 7/8/9 (2.47") by 0.08 (more than 1/16" less than 1/8"). Which brings the radiator slightly closer to the turbo.

I wish Mishimoto made the 7/8/9 radiator with the top inlet moved to be inline with the tstat housing.

 

The Evo 7/8/9 radiator ^