Happening now

 

Fan removed and replaced. Now for the moment of truth: Did I just waste $250?


Removing the fan

Old fan. I hope it is bad.

Back together.

 

Still that annoying sound and temps up to 221. New low temp thermostat is on its way. Will also check exhaust for leaks and tighten the exhaust manifolds.


Oh well. At least I got my oversized spare on!

 

This really helped me out. I did find exhaust leaks. Tightened up some of the obvious ones but it also looks like I will need some welding done. Didn’t get around to torquing the exhaust manifolds to the exhaust. I’ll do that later in the weekend.

 

Oh dang, well done. Did you just tape up the shop vac hose end to seal it up?

 

When I did it, the shop vac hose fit pretty snugly in the tail pipe and there was no need to use tape to seal it.

 

Awesome. I have an exhaust leak and didn't even think of doing this. Forum win.

 

I used My leaf blower and duct taped the vacuum hose to the exhaust. Worked like a charm!

 

Pulled the stat and put in a genuine 180 stat. Flushed all the coolant out. Running with water and purple ice - no coolant.

Before

idle - 210 to 215
1500 rpms - 210 to 224
2000+ rpms. - 204 to 212

After

idle - 194
1500 rpms - 183 to 188
2000+ rpms - 179 to 183

Fixing the exhaust leaks tomorrow!

 

I'd advise against running without coolant. Coolant acts as a lubricant for water pump bearings too, and has other corrosion prevention properties. I believe all water wetter/purple ice/etc do is break the surface tension water might have as it runs through channels. Running straight water will almost always have better cooling properties than running a 50/50 mix alone. Some race cars run water. But it's not a suitable substitute for 50/50 in a not-racecar.