Thread: Engine temp problem? Or not?

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Some history.

ZZ430 motor, 180 stock stat (restrictive), no spring in bottom hose, Walker 4 core radiator (newly freshened up), electric 16" Spal 2370 cfm fan (new & much more power). Comes on at 180, off at 160.

Car always ran at 190

Changed all the stuff because I want to be ready for summer & driving.

Changed upper & lower hose (with spring this time) & removed the 10 yr old thermostat & installed a new high flow thermostat. I was surprised to see a 180 stat in there w/ car running 190, even on a cold day- I would have sworn it was a 195 in there, based on temps.
Normally if I started the car in garage & let it come to temp, it would sit in the 185/190 range, fan would come on & not shut off. Temp was A-ok.


Now I fire up the car & let it come up to temp. Comes up to about 175-180 & stays, fan comes on, temp drops to 160, fan back off. Does this repeatedly. On-Off-On-Off. Drops fast when fan comes on. I have no idea of brand or CFM of old fan.
I drive the car. Temp swinging between 180 & 165 on side roads. On freeway, hits just below 180 & stays, fan is off due to speed of car.
I thought thermostat might be bad so I swapped it out for another new one- a different brand this time. 1st one was Stant, second was Mr. Gasket.
Same exact thing. Both are high flow & opening area is huge compared to the stock one.
Both new & stock were 180 degree stats.

Problem or am I worrying about nothing?

BTW- It's only in the 70's here now.

On freeway at speed- temp is 180- right at thermostat temperature. Around town- lower.

Too much fan? Too much radiator? Too much thermostat flow?
Or should I shut up & drive?

sounds ok to me i would not worry about it

way overkill,Just drive it!I know that can be easy to say,but that is what I did,No problem!

This is so much better that "too hot". It sounds okay to me. I've got a 1971 Chevy truck w/350 and has similar pattern, i.e. 160 most of the time and I'm running a standard clutch-type fan. I think you're good..

Now - please get to work on the economy, jobs and health care and get back to us with similar good news!

Regards,
Glenn

Originally Posted by glennsexton

Now - please get to work on the economy, jobs and health care and get back to us with similar good news!

Regards,
Glenn

I'm doing my part- spending assets on my car!

could it be too cool?hey.. happend to me!

I'll wait & see.
Probably hit 100 here in a few weeks & that'l test it.

I have a show in the desert in August & I want to be ready.

hell making them hot is not hard at all .getting them to stay cool is the bitc# i will take cool any day