just installed a digital water temp gauge. At what temp should i start to get worried?

 

are you telling me no one here knows

 

Are you asking for like degrees or something? The only gauge reference that we understand is "1/4" "1/2" "3/4" and "ka-boom!".

 

I had all that info on my website before it got hosed, so if you didn't see it - too bad.

Anything under 240F is fine.&nbsp Remember, the stock electric fan doesn't kick in until 225F.&nbsp 250F is the danger point!


-Ted

 

Now I have a question for you: What level of the stock gauge represents 250 degrees?

 

On at 207degF, off at 194degF.

 

I wouldn't trust the stock gauge if it was the last thing on earth - seriously, you really need an aftermarket water temp gauge to monitor the coolant temps.

I would try and keep the temp gauge under 1/2 as much as possible.&nbsp In my experience, different FC's have different temp gauge readings - I think this has to do with the degree of grounding the engine gets, as the stock sensor runs ground through the engine block.&nbsp My FC used to run about 200-210F at 1/4 and 240 at 1/2 through an SPI electrical water temp gauge.


-Ted

 

I know for my S5. at 220F the stock gauge is still in the exact middle where it sits at 180 as well.....

 

Uh.....next mod....water temp gauge.

 

Its interesting, my gauge has always read 1/2 when warm. With the exception of when the tranny overheats the radiator and the radiator overheats the engine.
Heh, If you've never seen a car's tranny pan get blown off a car on an interstate, damn its a site. Damn good thing the other cars stopped, tranny fluid is damn slick, especially when heated over 250deg. Anways to make that story short, I-90 was down to 1 lane near Sturgis SD until the HP came with their catliter equivalent. $27 dollar fine for "road damage", and a blown tranny. Did I mention the wall of burnt tranny oil smoke? Heh... I get a kick out of that everytime I think about it. There is no way to describe the amount of smoke.

 

No wonder I have only heard my E-fan come on a couple times. My temp hovers between 175-180.

 

The S4 temp gauge has a linear reading (moves with temp) but the S5 one only has three positions: too cold, too hot and everything else.

 

This really sounds like the US-spec Miata thermo switch rather than the US-spec FC switch.&nbsp The US-spec thermo switch kicks in at 225F.


-Ted

 

Is there a temp guage that will fit in the stock location that is good.

 

Those figures are straight from the US-model 88 RX-7 FSM, available online.

 

I'll be using one of those cheap wally world temp guages...they work great and I'm a fan of mechanical guages. Not that you guys really care I'm just adding a post to my count.,...

 

Mine doesn't even go above 210, hits 200 after a hard pull, fan kicks in, cools down.

 

What thermal sensor replacements do you guys recomend? How about the Niehoff Ignition WA629BK ? $18 bucks at advance auto parts.

 

This is kind of on topic.

Is there any side effects to running the aftermarket temp probe in the stock water pump housing if you don't have the Efan? Does that temp sensor on the back of the pump housing do anything else?

 

I run 180ish, e-fan set to 190ish. The highest I've seen was 220 on a dyno (the dyno fan was blowing right on my e-fan sender... I have to move that.)

Mechanical gauge in the thermostat neck.

 

what the hell... bringing this one back frm the dead...

 

I have the water temp sender unit tapped into the water pump housing and my gauge is between 180-190.

 

Ya,I have been doign that lately... so anyways
What thermal sensor replacements do you guys recomend?

 

With my autometer gauge I can watch the temp increase....then right as it gets the point the thermostat opens it drops about five degrees. It is nice to be able to see that happening.

James

 

The one that comes with a Greddy gauge.