[911racing]

Another newbie -still learning. I have a 79CX500 std ----I have not been able to find a diagram explaining the coolant flow direction before/after the thermostat opens. I have looked the factory manual-nothing.



I am just curious and want to be sure that everything is ok before I start my first ride in 10 yrs--bike been in storage-have done a lot on prep and it starts--waiting on thermostat. The orig one still works- but just wanted to start out good.



Thanks again

 

[thackney]

Before the tstat opens the circuit is pump to engine coolant passages to stat housing to bypass hose to pump. When the tstat opens flow is to upper rad hose through rad and back to the pump from the lower hose and pipe on L side of engine.

 

[Allan]

 

[nolavox]

I think the flow is right to left through the thermostat looking from drivers perspective. ( that pipe will suddenly get warmer)



Disclaimer: There is a 50% chance of error in my response

Edit: I could only see a question mark and now see the diagram.... It looks like I was 100%--- 50% wrong

the pipe getting warm would indicate the thermostat opening tho.

 

[911racing]

Great Stuff, I was just not sure which way to guess.



The explanation and diagram are two terrific aids. I am anxious to ride by this weekend.

 

[911racing]

Ok, got the bike running.



I had the radiator cleaned, filled 50% with coolant and distilled h20. The orig 82C Tstat still works but I put in a new one.



I tried to idle in driveway to get tstat to open ( no cap on rad)- can not get hot enough. So went up and down the street and the TEMP is just to the left of the "M". --normal range. I got my infrared thermometer and the tstat was only at 75-80 C.



Question



1> Drain some coolant and add h20 and try agian to bleed the air.



or



2> Fill rad ,put cap on tight and run the highway for a while and come back home. Let cool down a little and take cap off --idle some more and see if collant is flowing. This will take longer since I have to remove fairing to get cap off--too tight in there.





---the reservoir is half full



)))I did test the new tstat several times---it began to open at 185 F and fully at 205 F

 

[Shep]

If the coolant is flowing the transfer pipe on the side of then engine gets hot

Have you checked the voltage of your 7V supply,



http://globalcxglvtwins.hostingdelivered.com/viewtopic.php?f=8&t=257

 

[rickbert]

Oh heck.....nevermind what I typed here first, if anyone actually read it before I deleted it and covered it up with this........I just woke up....that diagram is correct !



I think I smoked too much as a kid and my brain doesn't operate fully first thing in the morning....

I'll be back after more coffee....excuse me

 

[marshallf3]

It follows on virtually any vehicle or stationary (like for a big pump) engine that the hot water enters the top of the radiator(s) and exits at the bottom.



Hot water rises, cooler water sinks. A little thinking and it will make sense.



I'm going nuts again. Buried somewhere in the pile of network wiring, routers, modems, switches and a bunch of other junk near me is a Casio alarm watch that I must have left set to set off the alarm at 10:30 AM. It puts out one of those electronic tones that can't be pinpointed so now every 5 minutes for an hour it goes off until it gives up after an hour. I've looked as hard as I can without moving stuff so much that I might upset the complicated network wiring that feeds 8 wired and one wireless point. Ah well, when I get stronger I'm going to put my real reworked desktop and new 26" LCD monitor back in here and it goes in that area so I'll have everything apart and I'll find the stupid thing then.