Thanks so much!!! I love this Datsun! What's funny is that I'm 6'7" and weigh about 250. :) I even laugh at the thought of someone not prepared to see me get out of my own car. lol! What a site!


Dreamer

Glad to hear about your success!

And so you are correct! I replaced the water pump, and not much improvement. However...I replaced the radiator, and WALAA! My baby doesn't go hardly over the second cold mark..and that's in 110 degree weather! Here are a couple of pics to show what I did. THANKS again guyz!





and yet another:

Quote:As I said, the normal operating temperature varies because Datsun put such small radiators in some models.

But the correct operating temperature should match your thermostat. For example, with a 180-degree thermostat, your engine coolant should be at 180-degrees, winter or summer, no matter the temperature (once the engine is fully warmed up). There is probably a plus-minus 10 degrees tolerance.

your running temp should be just under half way on your standard temp gauge and no higher

if your temp is higher check to see if its blocked or upgrade to larger radiator

The only problem I can think of with getting a different radiator is the shroud. See, mine (luckily) HAS the original, two piece, shroud....and if I get a bigger radiator, that shroud isn't probably going to fit, thus making for a heated situation if I'm sitting at a long light or traffic...right?


Dreamer

I dunno...don't have a tach.....will see if I can't hook up a temporary meter to see the rpms.

Anyhow, does ANYONE know the normal operating temperature (considering a 110-115 degree Farenheit summer) of my Datsun?


Dreamer

p.s. - Thanks again fer all the advice.

Quote:How high RPMs? A Datsun 1200 runs about 4,500 rpm at 75mph -- well below the redline of 6000 rpm. It can run all day at this speed.

Paying to have a 1200 radiator rodded is a waste of time. Just get a bit larger B210 radiator for less money. You might check with other 610 owners to see if the same principle also applies to 610s (meaning, are 610 radiators marginally 'too small' right from the factory?)

You can test if the radiator is "plugged up on the inside" with this simple test:

1. (engine cold) Remove the cap and yndo the top hose.
2. Undo the bottom hose and block it with your hard
3. Top up the radiator with water
4. Remove you hand
- if it runs out a stream as big as the outlet, all at once, that's good
- if it runs out a stream smaller than the outlet, it is blocked

gday mate
ive got a 180b and i was having the same troubles...

as long as your hoses dont have leaks the problem is your radiator
have it flushed and pressure tested at the radiator place (radiators can look fine on the outside when on the inside they're as bloked up as a public toilet)