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June 11th, 2012, 11:23 PM   #1
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will thermo fans fit 2005 fe 550e

i have dramas with overheating and boiling on my fe 550e, will thermo fans fit straight onto my bike, and how much would be a decent price to pay for them
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June 15th, 2012, 01:18 PM   #2
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Re: will thermo fans fit 2005 fe 550e

Originally Posted by trent_181
i have dramas with overheating and boiling on my fe 550e, will thermo fans fit straight onto my bike, and how much would be a decent price to pay for them
No, there is not enough room.

You have to get an 06 fan if I am not mistaken, that is what I did with my 04 550.

Easiest fix for you at the moment is to get some Evans power sports coolant to stop the boil overs.

Dale
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June 15th, 2012, 07:41 PM   #3
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Re: will thermo fans fit 2005 fe 550e

What are you actually doing when the bike overheats, not saying the fan is a bad idea but it shouldn't be required unless your doing alot of slow riding, is it possible there's something wrong with the cooling system? Could always get a higher pressure rad cap also
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June 16th, 2012, 02:16 AM   #4
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Re: will thermo fans fit 2005 fe 550e

we do a lot of slow riding but i replaced the cap nand we have gone through every possibiltiy of what could be making it over heat and we can not figure it out, the only thing i havnt done is replace the thermostat, but i pulled the thermostatout and it opened up with boilng water but not with 50 degree water
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June 16th, 2012, 07:22 AM   #5
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Re: will thermo fans fit 2005 fe 550e

Originally Posted by trent_181
we do a lot of slow riding but i replaced the cap nand we have gone through every possibiltiy of what could be making it over heat and we can not figure it out, the only thing i havnt done is replace the thermostat, but i pulled the thermostatout and it opened up with boilng water but not with 50 degree water

Not a bad Idea, however you can't just remove the thermostat itself, you will have to eliminate all of the hosing and run it straight. By just removing the thermostat you have an open loop in the cooling system that will allow coolant to just recirculate without passing through the radiator. If you want to remove the the thermostat you will need to do it like the FS, and FC models of that year, pages 74 & 75 of the spare parts manuals.

However, I don't think that is your problem. Your problem is not enough air flow over the radiator, and, possibly low engine revs in your tight riding.

You can also drill holes in all of the radiator louvers to allow more air flow to go straight into the radiator

Try keeping the revs up a bit higher, E.G. ride in a lower gear. This serves two purposes, it circulates the coolant faster through the loop, and requires the motor to make less power thus generating less heat. This technique worked pretty well for me on my 04 550.

However, in the end, I put Evans NPG-R coolant in it to eliminate the boil overs all together. The NPG-R is going away as it was not rated for below freezing temps and has been replaced by a new fluid that is rated for below freezing temps, I believe it is called power sports or something. Go to their web site and it will be easy to find. As I said before this will be the easiest way for you to eliminate boil overs. The Evans will make the motor run about 20 degrees F hotter as it does not exchange heat as well. HOWEVER, the coolant stays in the motor, and you will not have boil overs. You just have to be smart about it though, you can't sit still and abuse your clutch forever trying to get out of a tight spot. For me, it worked out great when running the National Hare and Hound series..........You'd come to a big uphill, or tight section that would normally cause a boil over, but, with the Evans it would not, and in a while you'd be moving again and the motor would cool off since all the coolant was still in the cooling system, as opposed to it puking out an unknown amount, and then having to decide whether to ride on, or stop during the race and top off.

In my case when I saw a guy parting out an 06 bike I bought his tank so I could install a stock radiator fan kit. Your year bike does not come with a bung in the radiator for the thermo switch, and neither did mine. Again, In my case a guy was parting out an 07 bike and I bought his radiator which did have a bung for the thermo switch. However, you can get a local radiator shop to install a bung for the thermo switch, or, they make in line thermo switch wells that you just cut into the bottom hose of the radiator. If you go this route, make sure you get the 100C switch and not the 85C switch, or the fan will run all the time. And when that happens, the fan will take all the power that is converted to DC, and that means that your battery will eventually loose its charge, and you will be kick starting your bike as the stock stator rectifier/regulator only puts out 25 Watts DC and the other 90 Watts is put out as AC voltage to run the lighting. This was a complaint among fan users, and that is why I suggest the 100C switch, as that was the solution for a lot of these folks.

In my case, I had my stator rewound by UHE member SPARKS, and installed a trail tech universal reg/rectifier, and made my bike all DC voltage. Plenty of power then to run the fan continuously, charge the battery, and run all the lighting and then some.

Speaking of which, do you have the closed course jetting in it, or the EPA green jetting?

You should be running a 40 pilot, and OBDVR needle 5th from the top at the very least, and set the fuel screw according to the manual. The stock EPA green jetting makes the bike run a lot hotter.

One last point, do you bleed the cooling system each time you ride the bike? There is a small 8mm head bolt right next to the spark plug. It is pretty critical that you bleed coolant from this screw as there is an air bubble that forms in the head, and if there is air where there is supposed to be coolant, then its going to get hot. When the bike is cold, simply take off the radiator cap and loosen this screw until coolant with no bubbles is coming out. You will be surprised at how much air is trapped in there.

Hope this helps,

Dale
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June 16th, 2012, 11:42 PM   #6
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Re: will thermo fans fit 2005 fe 550e

I'm with Dale, I purchased an 06 tank set up fo rmy 04 550 and then there's a ton of room to mount the fan, I'm setting up an in line KTM X-CW 300 kit (splicing the hose for the temp switch) with an on at 100 off at 95 temp range as well as running an Ozzie made product much like the evans product mentioned.

If your going to hang on to the 550 for a spell then spend the bucks, it's not a huge amount of money for a good result.

Good luck
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June 18th, 2012, 01:57 AM   #7
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Re: will thermo fans fit 2005 fe 550e

thanks heaps for your help fellas,
now that i think abouti think i might of been nursing it through the tight slow stuff, so ill try giving it more revs this weekend,
im not sure which jetting my bike has, how do i find out?.
and i wasnt aware that i should bleed it every time so i will make suere i do that.
ill look into running a 40 pilot and adjusting the needle but im not that good with bike engines,

thanks heaps again you have givin me a lot of things to look at hopefully i can solve the problem if it doesnt i think ill have to bite the bullet and put on thermo fans
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