Thanks for info guys. But wooooot ! I do have some issues with overheating during racing conditions, BUT giving away more than 2-2,500 is waaaay too much and certainly out of my budget.
Thanks for info guys. But wooooot ! I do have some issues with overheating during racing conditions, BUT giving away more than 2-2,500 is waaaay too much and certainly out of my budget.
Any chance for a used unit ?
have you done the mods to your cooling system? after doing my 999 i have to tape the radiator if its a little cool out
have you done the mods to your cooling system? after doing my 999 i have to tape the radiator if its a little cool out
What are these mods? Remove the thermostate?
You know what helped me a lot? Cut out the fairings like the 2003/2004 999 versions were on the front and the side. Seems like it transported off the heat way better. That was good for 7-8°C.
Here's two 749R radiators for sale for reasonable money. That way you won't have to downgrade your radiator and fiddle with an extra elbow and hose.
Thanks a lot for the link, will look into it. But before I do, is there a point swapping my stock 999 rad for the 749R's rad ?
If yes, then by all means I'll look into it, the price is reasonable and also swapping won't need any modification to the plumbing or the fairing (right ?).
Quote:
Originally Posted by demontech
have you done the mods to your cooling system? after doing my 999 i have to tape the radiator if its a little cool out
Well could you elaborate on these "mods" you're referring to ?
What I have done is always use a mix of distilled water+Water Wetter, changed the oem hoses with Samco silicone ones, changed the water pump cover with the SpeedyMoto billet cover and also I use a racing fairing with the '03-'04 styling (more holes in the front and the sides for better cooling).
I'd like to hear more/any advise on what more can be done for reasonable $$$ (that 749R rad is intriguing if it really does make a difference over the stock 999 rad... waiting for your thoughts on this before I go for it)
Quote:
Originally Posted by Ben710
What are these mods? Remove the thermostate?
You know what helped me a lot? Cut out the fairings like the 2003/2004 999 versions were on the front and the side. Seems like it transported off the heat way better. That was good for 7-8°C.
See above Ben, it seems we think alike . As for the thermostat, I haven't removed it. Not sure it will make a difference though
I've never tried it. It holds more water, so it can probably support more demanding use like the 749R was destined for. Most 999 models run fine with the stock radiator, so it may not be worth it. Maybe someone else has some hands on testing?
I've never tried it. It holds more water, so it can probably support more demanding use like the 749R was destined for. Most 999 models run fine with the stock radiator, so it may not be worth it.
Trussdude has one, but never gives any feedback on its functionality. In fact, he never gives any feedback related to the parts on his bike, ever...
I'd buy one, but I don't have an issue. If anything, my bike runs cooler then it should run (90C) on a HOT day racing. Most of the time its well below that, in the (70-80C) range.
Also, total side note, if your bike is getting super hot, ya need to check the A/F. I also give a +1 to the idea of drilling holes in your fairings to help vent the radiator. After a proper tune, my 748R ran at 60-70C all the time, which is amazing for a race bike!
(don't mean to hijack the thread since it's about 749R rads, so if the moderators feel I do, please split or move these posts)
On the subject again, my question above is about the difference in performance between the stock 999 radiator vs the stock 749R radiator.
If anybody can help answer this question I'd be grateful.
And if there is indeed a performance increase of the cooling system when using the 749R's rad, then I'd go and get one. I'm looking to drop the "race" temp on my 999 around 10-15C.
Thanks in advance and hope someone can shed some info on this.
yes, remove the thermostat but you have to pug the hole it was in so coolant cant bypass the radiator. the therm is a terible setup as it dosnt fully block the coolant from bypassing when the motor is hot.
(don't mean to hijack the thread since it's about 749R rads, so if the moderators feel I do, please split or move these posts)
On the subject again, my question above is about the difference in performance between the stock 999 radiator vs the stock 749R radiator.
If anybody can help answer this question I'd be grateful.
And if there is indeed a performance increase of the cooling system when using the 749R's rad, then I'd go and get one. I'm looking to drop the "race" temp on my 999 around 10-15C.
Thanks in advance and hope someone can shed some info on this.
It holds a little more water. 2.7 vs 2.8 l It also has
imo the better spigot arrangement. With modified Thermostat
and fairing with cleared lower left fairing (electronics in nose) and
Silicone/Alloy tubing it never ran above 95C even on the hottest
days in RS race trim.
__________________ 848RS, M1100S (soon) GP SuperTwins Champion 2007 & 2008
Nothing is more satisfying than passing V4 Honda riders & Trolls!
thats a good shot! this works so well! a hoop in front of the radiator helps a lot if you have removed the intakes or the peices below the stock intakes
. As for the thermostat, I haven't removed it. Not sure it will make a difference though 
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