Dumb question: fan on backwards?

AND , if it is not puking coolant over board or making nasty boiling noises when you shut off it may not really be running hot. One of those infrared temp guns is handy to have.

 

Model airplane engines turn the opposite way from our automotive engines. Ergo, their propellers turn the opposite way.

Just a quick look will tell if the fan is on 'backwards', as the camber of the blades is concave at the trailing edge. (fans and propellers are 'airfoils')

With the correct airfoil coupled with high R.P.M., the old adage tossed at the errant driver revving his engine at the green light: "Put it in gear, the fan won't pull it!"... just may be true.

 

A junkyard crawl may produce just the right spacer....And a shroud as well.

4TTRUK

 

I think it can't hurt to find a shroud. In re: the puking thing, I can drive it (nervously) with the needle buried into the H and it doesn't puke up coolant at all. I'll probably crash watching that needle instead of the road though.

Anyone install an after market temp gauge on one of these y-blocks that actually works? I bought one from LMC, but it didn't fit...

 

What temp is "hot"?

 

Coolant temp over 230 at the top radiator hose is "hot"...but I don't have a gun so I don't know what that looks like on the outside of the hose/thermostat housing/radiator top tank

 

I would add a fan clutch as well as a shroud.

 

Well, I put in a new thermostat, new coolant and still can't get a handle on the heat thing. Fan shrouds are on their way but I wonder if the factory cold to hot gauge is faulty; if my motor really is running hot, i should expect it to shit coolant after a long drive right?

I will say that I did invest in a vacuum gauge and since my motor is missing the timing pointer, i had been adjusting timing by "ear." I plugged in the gauge and it said my timing was way retarded by a hell of a lot. I adjusted it till I was a bit in the green zone and man, the fridge pulls like a champ. It gets to 60, stays there and has room for more (It was a struggle before).

That said, I was up and down the freeway at 55-60 for over 10 minutes with the factory needle pointing PAST "H" for 15 minutes before that, and never once did it puke coolant..

 

keep putting timing in until it pings, then back off till it stops. Timing can cause overheating and you'll go mad trying to stop it with "normal" tactics.

 

Well, I did as suggested and bought a thermo gun thing. But before I did that, I stopped by a buds house and he had one and it was showing that the engine wasn't running anywhere near 220 degrees. Drove for a while, picked up my own gun, drove some more, grabbed some ice cream, drove some more, came home fired the gun at it..

Yeah, no problems. I guess my old gauge is faulty. I'd still like to monitor the temps from inside the cab though; does anyone have any suggestions on temp gauges?