Coolant
- Thread starter FFRDave
- Start date
iancp5
New member
It shouldn't - was it unusually hot? Mine has never overheated or vented more than a drop when I've overfilled but the UK is quite a temperate climate and I've never ridden it over 30 deg. I do run the LTR impeller though.
I just changed the coolant on my 300, and it was the easiest change I've done on any bike I've worked on. I did find that leaning the bike over almost 45degrees to the right, and pouring slowly waiting for the burping and bubbles really helped in getting the air bleeded out of the right rad. I first filled it up while upright, then leaned it over right and left and quite a bit of air came out, necessitating a re-fill a couple times. Went for a 40km ride after and the level was fine.
For the record, I used some premixed Honda coolant I had.
For the record, I used some premixed Honda coolant I had.
iancp5
New member
I think you have a more serious problem.
Check the mixture via plug chops. Make sure you haven't blown a gasket or o-ring. If that's ok you must have some sort of blockage in the cooling system - I guess that's a laborious job of stripping the head and all the bits off and checking. Small point before - the impeller is turning ok isn't it? Check it isn't slipping for some reason.
Claude,
The 2 key things to sort out are 1) adequate coolant flow and 2) adequate airflow through the rads.
1) verify adequate coolant flow - see if the radiators warm up quickly when first warming up the engine. If not, then you proabaly have a coolant flow restriction.
2) adequate airflow – I suggest that you remove the Flatland guards and try it without them. Install the stock louvers. I do not run flatland radiator guards for 2 reasons - they notably reduce radiator airflow compared to stock and they do not provide me adequate crash protection (I badly tweaked both rads in crashes on my ’01 while using Flatland guards in conjunction with GP braces). I now use modified CRD braces and custom sized GP braces. For more details on my radiator protection set up see my reply in…
http://www.gasgasrider.org/forum/showthread.php?t=131
If you really want to keep running Flatland guards, then you could use Evans NPGR coolant. The engine will not run cooler, but you will most likely prevent the coolant loss since the boiling point of Evans NPGR is 400F.
The 2 key things to sort out are 1) adequate coolant flow and 2) adequate airflow through the rads.
1) verify adequate coolant flow - see if the radiators warm up quickly when first warming up the engine. If not, then you proabaly have a coolant flow restriction.
2) adequate airflow – I suggest that you remove the Flatland guards and try it without them. Install the stock louvers. I do not run flatland radiator guards for 2 reasons - they notably reduce radiator airflow compared to stock and they do not provide me adequate crash protection (I badly tweaked both rads in crashes on my ’01 while using Flatland guards in conjunction with GP braces). I now use modified CRD braces and custom sized GP braces. For more details on my radiator protection set up see my reply in…
http://www.gasgasrider.org/forum/showthread.php?t=131
If you really want to keep running Flatland guards, then you could use Evans NPGR coolant. The engine will not run cooler, but you will most likely prevent the coolant loss since the boiling point of Evans NPGR is 400F.
GMP
Active member
Claude,
I just realized something, you run a Clarke tank correct? Does this tank in any way restrict airflow on the back side of the radiators? Also, what cap do you run? If you don't have the KTM cap get one, unless you go with the Evans coolant then it doesn't matter.
I have had two GGs, and ridden with a number of others in some very technical terrain without problems. Standard coolant, rad guards, stock impellers, stock and KTM caps. 125s to 300s. Mud, steep hills, deep sand. The bikes just aren't prone to overheating. There is something more to this.
I just realized something, you run a Clarke tank correct? Does this tank in any way restrict airflow on the back side of the radiators? Also, what cap do you run? If you don't have the KTM cap get one, unless you go with the Evans coolant then it doesn't matter.
I have had two GGs, and ridden with a number of others in some very technical terrain without problems. Standard coolant, rad guards, stock impellers, stock and KTM caps. 125s to 300s. Mud, steep hills, deep sand. The bikes just aren't prone to overheating. There is something more to this.
Claude,
Glenn's post triggered a question - what is the altitude where you are experiencing the problem?
I agree with Glenn that the GG 2T are resistant to overheating. However, the only time I had mine overheat with conventional coolant was at 6k ft elevation in hot weather on a steep climb with many tight switchbacks. At this high elevation there is less air density which means less cooling.
Glenn's post triggered a question - what is the altitude where you are experiencing the problem?
I agree with Glenn that the GG 2T are resistant to overheating. However, the only time I had mine overheat with conventional coolant was at 6k ft elevation in hot weather on a steep climb with many tight switchbacks. At this high elevation there is less air density which means less cooling.
cladoo
Site Sponsor
That is exactly when it happens, at 6200ft after a steep long climb. From about 5500 ft to 6200ft in third then down to second gear. This is the only time it boils over. Tight trails at 6200ft does not make it overheat. I went richer on the main jet, from 165 to 170. We'll see.
Loosenut
New member
What jetting are you running in your Gasser for this 6200' ASL climb?
I just rode all over from 6000 to 10000 ft in Idaho.
I have only boiled the coolant in my 2000 GasGas 300 3 times and so the '05 has yet to boil over. I climbed many steeps switch-back hills in Idaho in August on the '05 and I was sure that it would boil over, but it I experienced no problems.
My jetting was:
40 pilot
#8 slide
LTR needle in position 2
168 main
I just rode all over from 6000 to 10000 ft in Idaho.
I have only boiled the coolant in my 2000 GasGas 300 3 times and so the '05 has yet to boil over. I climbed many steeps switch-back hills in Idaho in August on the '05 and I was sure that it would boil over, but it I experienced no problems.
My jetting was:
40 pilot
#8 slide
LTR needle in position 2
168 main
cladoo
Site Sponsor
I was running a 40 pj, #7 slide, G needle at thetop,165 mj. I have since shanged the mj to 170 and will try the LTR needle this weekend. I have been sent an '07 EC300 and should get it Friday. I have to assemble it and break it in soit is ready for Cycle Canada to do a multi bike test here in AB. I hope to take it out this weekend for a break in ride, though it is raining here and they are saying there will be 25cm of snow in the mtns tonight. I hope it melts fast. Should be fun.
Similar threads
