Well got my motor installed and my fan switch took a dump on me so I had to pu in my mugen fan switch. I am still runing the stock thermo is that bad somebody told me it was bad and on kings sight it was said not to do it any reason why this is bad or not?





[Modified by underrated99si, 8:49 AM 7/29/2002]

 

I didn't think there was such a thing as too cool on a B series motor

FWIW, I know a few track guys who run with no thermostat. I wonder what the reprocussions of this would be (other than taking longer to get the engine to normal operating temperatures).

 

overheating....

 

sp00m fan switch w/ stock thermo here

 

should have mine sometime soon.........i hope.

 

overheating WTF how is that possible?

 

If Yoshi has no problems I believe it will be fine then. I still have not installed my fan switch because I will try to find a Mugen thermo in Taiwan.

 

running both the sp00m thermostat and thermoswitch
very happy with it so far in 90 degree summer weather
will find out how i like it when its 20 degree winter weather...

 

How does your setup run on the freeway?

 

water temp needle is always between one quarter and one half markers
never moves...local or freeway...altho "freeway" is a relative term in these parts
warm up time is fairly quick also...no problems at all so far

 

What rad. fluid are you using? Mixture?

 

honda premixed...forgot if which number 1 or 2

 

With no thermostat, there is no flow restriction of coolant to/from the radiator. As such the coolant may not be in the radiator long enough to transfer heat into the air and the coolant will never cool down, thus retaining more and more heat until the engine overheats.

The thermostat allows the coolant OUT of the engine to cool off, so when it is exchanged with the coolant IN the engine, that coolant can absorb the heat. With no thermostat, the coolant can only transfer its heat into the air (via the radiator) as it briefly passes through the radiator. This usually isn't enough and over time, ALL the coolant will be at or above the boiling point.

 

If you run the switch and not the thermostat as the thermostat allows the engine to reach operating temp its already past the turn-on temp of the switch. So what happens is that the fans will always be running and put lots of wear and tear on them. Plus more current draw if idling for long periods could cause charging problems and our alternators aren't exactly beasts at charging to begin with trust I work at Acura. Nothing really wrong though just run fan switch and thermostat together and it will just kee the operating temp lower than stock and prolong life in theory and the fans will still cycle as like normal just normal will be like 160-175F compared to 190-200F as is normally the case. HTH

 

can't you use a switch to manually turn on/off the fan?... i was planning to run without the thermostat and just get an aluminum radiator and add some redline water wetter... my car is not to be driven on the streets and will only see a 1/4 of the track... just wanted to know ur thoughts too?

 

That would be 2.

 

yep,

 

2 it is then...hth

 

so basicly I am fucked and I am messsing up my new B18C5 yes

 

Either use a lower temp thermo or go back to stock I don't think you will have problems with your new rad.

 

Integratom is right. So I would put in a lower temp t-stat or you could mess things up. But don't just throw in any old t-stat. Get the Mugen one (or another brand that has the same rated operating temps as the Mugen) so that it will be properly matched with the Mugen fan switch. You want to maintain the same operating "cycle" as stock...lets say 10-15*F...but just in a lower temp range. I've had the Mugen t-stat and fan switch since April and its been working great. Running 80/20 mixture of water/Prestone Extended Life Coolant (orange stuff). Here is some add'l info from PO.com http://www.preludeonline.com/showthr...ht=mugen+tstat

Btw...nice board


[Modified by Kool-Lude, 6:16 AM 7/30/2002]