If you rad is stuffed it needs to be repaired or replaced. If you replace it aftermarket is an option.

Also, if your car is modified the OEM radiator may not have the capacity to cool your system. Then an aftermarket high capacity one is called for.

That said, I wouldn't buy a radiator from a company with such low quality control that it frequently supplies dud radiator caps. YMMV

 

Agreed. Go with Koyo if anything. Mishimoto is a communist company trying to sound Japanese.

 

I jacked it up maybe a few inches, not much though. You think it would help if I went higher?

EDIT: Nevermind, I went and did a few 9k runs and all of a sudden the heater works again.

 

I installed a mishimoto radiator in my s and had the same problem. I bled it a good not exagerated 15 to 20 times and was still having overheating problems I got desparate and decided to do the gravity trick. I parked on a slope,jacked up the front of the car, and let it sit over night. Next day coolant was lower filled it up and never had a problem after that.

 

I'll give it a shot. I still get the overheating issue sometimes when it's really cold out or if I've been driving for some time. I've already paid for 2 flushes. I hope this one will do the trick.

 

I got the Mishimoto rad a few weeks ago, but I havent' been able to drive it yet, I did bleed it twice though, and I get hot air from the heater. I actually ordered the Mishimoto rad cap with the temperature guage built into it, I hope it isn't a dud. Right now I'm using the cap that came with the rad. I may carry a spare rad cap in my car in the future just in case things go bad with it.

 

What after market cap fits the mishi rad?

 

You can't really blame all the problems people are having on the radiator itself.. it seems like it's all in the cap/bleeding procedure/tstat that people are having issues. I'd say the first thing I would do if you're overheating is to switch out the rad cap/tstat and go from there since these are the 2 most likely things to go bad and the 2 that are the least costly. I've had my Mishimoto rad for almost a year and a half without any problems. When I installed it, I switched out the old tstat, and stock hoses and bled the system twice-just make sure you put the right amount of coolant in since it IS bigger than oem. hope this helps you guys!

 

I never thought about switching the hoses. What exactly is the difference?

 

The key to getting air out of the s2k bleeder is make sure the car is NOT running.

Open it while hot, car off. I can assure you all your hidden air will be right there at that 12mm bleeder.

I have also found using the rubber bleeder on the firewall is not necessary. Not only that, if your methods are not perfected, you will get air INTO the car with this rubber bleeder.

And whatever you do, dont follow the book.