Recently, I have been having some issues with my s14 and trying to keep it cool. Replaced everything except for the radiator in the cooling system, but I have flushed the radiator out.

For some reason, I am slowly climbing in temps while driving. IMO, I think it is the radiator not performing as well I as would hope. Has anyone heard of the Mishimot X-Line yet? Instead of the 2 row core, these have 3 rows. Better cooling capacity, right?

Link:

http://www.mishimoto.com/nissan-240sx-s14-performance-aluminum-radiator-95-98-sr20-triple.html

Thoughts?

Could be your waterpump, or air bubbles in your coolant system. You need to check these things before buying a new radiator.

Mishimotor radiators aren't half bad, but if they come with a plastic drain plug, beware. It will be the weakest link if you are either driving aggressively, or tracking the vehicle. A friend had his literally shoot out the bottom and empty all the coolant all over the track.

^^ Thanks for the response neptronix!

I bled the system extremely well last night, and the water pump along with the Tstat, rad cap, hoses, were replaced within the past month. Could it be my water pump already failing after 1k miles?

Also, when I was checking out Mishimoto's site, on the home page it mentions that they now offer magnetic drain plugs with the radiators, and not plastic ones.

doubt its your water pump failing but its a possibility is your rad fan working? and stupid question have you got plenty of coolant in?

^^ Thanks for the response neptronix!

I bled the system extremely well last night, and the water pump along with the Tstat, rad cap, hoses, were replaced within the past month. Could it be my water pump already failing after 1k miles?

Also, when I was checking out Mishimoto's site, on the home page it mentions that they now offer magnetic drain plugs with the radiators, and not plastic ones.

No problem.
If you replaced all that stuff recently, then i can only place blame on the bleeding of the cooling system. The BMW e36 was *notorious* for this and i worked on a couple of those. I don't know how bad the sr20de is in terms of that, but it's worth a shot.

A fairly decent way to test for bubbles in the coolant system is to turn the heater on when the car is overheating. If it produces heat, good. If it doesn't, you've got an air bubble trapped in the heater core, which means you probably have air bubbles elsewhere.

As per bleeding, me and a friend learned of a great trick that would probably work on other cars. Basically, you leave the coolant reservoir cap open and get the engine nice and hot, rev it at 2000-3000rpm or so for a while, then right before the coolant boils over, turn the car off! ( and keep the reservoir cap open )

If it rapidly sucks coolant into the engine from the reservoir as the coolant starts to cool down, then you've displaced a ton of air which is now filled with coolant :biggthump:

Good to hear that Mishimoto finally fixed their radiators. They are good, otherwise, in terms of build quality.

Anyway, let us know if it's working or not, at least.