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custom39
02-26-2013, 11:08 AM
I do have a question for all of you... My cooling system is working, maybe too good, I can't get it over 180 at the thermastat when beating on it! normal hiway temp is 165...
so, can this be to low?

This was my first outing in my buggy...The outside temp was around 60 degrees...What motor temp change do you see from 60 compared to when it is 100?

I can easily bring up the temp by blocking part of the rad... just wondering about what temp change I will see at 100 degrees outside temp..

custom39
02-26-2013, 11:10 AM
You can see pics of my setup on the link below....around post 108.

CARLRIDDLE
02-26-2013, 04:08 PM
Running a T stat? Prob ok with outside temp. It would climb when it hit 95*

tgruling
02-26-2013, 05:24 PM
The major problem is what the engine management is "thinking" ,,,
What ever the management system is looking for will not be achieved
by a low motor temp, which could make a rich condition
until it reaches what ever optimum temp it is looking for ,,,
MY 954RR system is suppose to be around 210 degrees ,,,
Does your fan turn on at all ?

The full length tubes must be a part of the "cool temps" ,,,,
,,, just my .02 ,,,, but i think a good system will not see much
difference between 60 or 100 degrees. Your fan "switch" should
be the major contributor to controlling it at the "sweet spot"
- what ever it is designed to run at. Cool temps - not often -
hot outside temps = lots of run time ,,,,, ALL equaling a GOOD
performing cooling system that functions at the designed temp.

custom39
02-26-2013, 06:53 PM
Running a T stat? Prob ok with outside temp. It would climb when it hit 95*

yes, the stock therm in the stock location...

custom39
02-26-2013, 07:01 PM
The major problem is what the engine management is "thinking" ,,,
What ever the management system is looking for will not be achieved
by a low motor temp, which could make a rich condition
until it reaches what ever optimum temp it is looking for ,,,
MY 954RR system is suppose to be around 210 degrees ,,,
Does your fan turn on at all ?

The full length tubes must be a part of the "cool temps" ,,,,
,,, just my .02 ,,,, but i think a good system will not see much
difference between 60 or 100 degrees. Your fan "switch" should
be the major contributor to controlling it at the "sweet spot"
- what ever it is designed to run at. Cool temps - not often -
hot outside temps = lots of run time ,,,,, ALL equaling a GOOD
performing cooling system that functions at the designed temp.

my motor is not FI so no sensors to change any engine mapping... when I did the bench testing the fan comes on at 214 for about 30 sec....stops and the engine temp drops to 202....then when it hits 214 on again and keeps going thru this cycle. It appears the motor (in the shop running) can run like this for as long as I want.

So I guess the answer will be to mask off the rad till I get it up to that 212 temp range...and when it gets warmer open up the rad.

btw.... fan switch is in the bottom of rad and the temp sensor is right at the therm by nmotor

tgruling
02-26-2013, 08:32 PM
OK ,,, my 954 is F.I. so yours is better in that respect ,,,
My air box has enough by itself :--(
The Bench test should be a good example of what it should do ,,,
The "cycle" should continue throughout your run time ,, UNLESS
it cannot keep up - which would mean the fan stays on all the
time and it can't cool down ,,,,,
I am not an expert at this ,,, but i would watch for 50% run
time being too much ,, it should never stay as hot as a bench
test because air is flowing through the radiator ,,,, idling
at stop signs is where a bike heats up ,, running keeps the
fan off most of the time ?? It does not sound like you are far
off ,,, a little bit of air flow adjusting should be perfect.

Without sensor worries ,,, it might not make a huge difference
but i think it is better to be at least 195+ ,,, Personally
i don't think i would block more than a couple inches ,,,,

tgruling
02-26-2013, 08:48 PM
I don't know if you can see my radiator in any of my pictures ?
but because i crammed everything in a small place ,, the rad.
is behind the airbox and cannot keep up ,,, i added a second
mini radiator from some mini - ?? from England i got off Ebay,
in my side pod - both fans running off the temp sensor work
very well now ,,, cycling as you saw yours do.

custom39
02-26-2013, 10:21 PM
OK ,,, my 954 is F.I. so yours is better in that respect ,,,
My air box has enough by itself :--(
The Bench test should be a good example of what it should do ,,,
The "cycle" should continue throughout your run time ,, UNLESS
it cannot keep up - which would mean the fan stays on all the
time and it can't cool down ,,,,,
I am not an expert at this ,,, but i would watch for 50% run
time being too much ,, it should never stay as hot as a bench
test because air is flowing through the radiator ,,,, idling
at stop signs is where a bike heats up ,, running keeps the
fan off most of the time ?? It does not sound like you are far
off ,,, a little bit of air flow adjusting should be perfect.

Without sensor worries ,,, it might not make a huge difference
but i think it is better to be at least 195+ ,,, Personally
i don't think i would block more than a couple inches ,,,,


thanks....you are on the same page as me....and you confirmed what I was going to do....Just needede a reality check!

Rat4020
02-27-2013, 06:03 AM
Custom did ya try a new thermostat. Yours might be not closin like it should

custom39
02-27-2013, 08:25 AM
Custom did ya try a new thermostat. Yours might be not closin like it should


I did check it....and it is working...

How is your buggy coming?

Rat4020
02-27-2013, 08:39 AM
I took the frnt end apart the hiems are worn ordered new , workin on L frnt spindle .machine out and rebush top kingpin and untweak it a bit LOL . Then rebuild Kings . I kinda got side tracked workin on the boys frnt buckled Grand Prix for the last week or so [smilie=gun_bash.gi: