View Full Version : N/R Cooling System
I have a 2001 N/R Commander that I bought used about three years ago. It's the 350efi jet with the Hamilton 212. The question I have...Are there areas I need to check for sand/gravel? I have noticed the operating temperatures have slowly gone up the last year, especially when pulling.
sturgeonboy
05-27-2007, 01:20 PM
259,
Great question. Your cooling system might be starting to plug up with sand and silt. I am not the one to help but if you go over to the riverjet site there are alot of guys over there that will help you out.
I'll give it a shot. Thank you:cheers:
fishkisser
05-27-2007, 10:04 PM
Once you get the intercooler ungraveled I suggest you install a raw water filter on your setup You won't be sorry;)
IDWITHELD
05-28-2007, 10:18 AM
A sand filter is a must if you run skinny water or beach your boat alot (like I do).
I recently installed one and was shocked how much sand was trapped on my first outing.:bigshock:
Cheap insurance.
I did a photo play-by-play on the installation. I wonder if it is tech tip worthy?
Just another note worth mentioning. Keep an eye on your oil level and keep those filters changed. This is also a small part of the cooling system.
Monitor and log when you add coolant.
Check your plugs. If the ceramic is yellow / green you have a blown head gasket - which can result in overheating or raised temperatures.
I cleaned out the heat exchange. Not much sand but there was a little. I decided to check the thermostat since I figured the sand was not the problem. It was the thermostat. I put it in boiling water and it barely opened. Thank you all again. I'm still going to get a sand trap.
IDWITHHELD...I'll do a search for your post. I'm probably going to do the sand trap myself. It would be a great reference.
IDWITHELD
05-28-2007, 09:33 PM
I haven't put the pictures together yet for a how-to. I found some info on ifish...but not a lot.
But, I bought my sand trap from KEM Equipment Inc in Tualatin. I'll warn you it's not cheap. But, when you see the quality and construction it's worth every penny.
They sell a beautiful trap....just not a mounting bracket.
Good job on the diagnosis.