| Author | Message | ||
     Voodoo |
Ok I know Im the new guy, but I thought this was taken care of. Picked up the bike on Friday and have almost 300 miles on it as of today.  Absolutly love the bike..... but have one complaint. It was about 70 today, not humid at all, and every time I stopped there fuel dripping from the overflow line. I opened the fuel cap and could here the fuel boiling in the frame. Still breaking in? I work on cars for a living and dont see a "heat" issue getting any better. Any ideas? Coolant additives? Thanks. Adam. | ||
| Voodoo |
OOPPS hit the wrong something or other and put a smiley on the title. Not really supposed to be happy. OHH well. Learning curves on a new forum. | ||
| Jmr1283 |
theres a couple things. red line water wetter which is best to have antifreeze with it for the corrision protection. then theres engine ice. both reduce engine heat. theres others too. good luck. both should reduce engine heat close to 20 defrees | ||
| Redscuell |
Are you certain your new bike has the 3rd flash? If you're not sure, provide your VIN and some of the Board members here will be willing to check for you. I'm told that this latest computer flash has done a lot for the boiling issue. | ||
| Voodoo |
^I would hope so. The original bike I was supposed to get they couldnt sell me cause the cam chain tensioner recall had not been done.Ill put a call into the dealer tomorrow, thanks. | ||
| Slypiranna |
Until you get over 1200 miles on her, I wouldn't be of concern. This seems to be the norm now since I joined in early in the year of 08 and have been convinced of on mine. Ride it often and ride it hard. Do the first oil and filter change asap and examine it. With that examination, you'll find aluminum debris, which is ok but you shouldn't find any major color of brass or chrome flake. Report back after she has some more time on her and you should feel more cool about it then. New=hot...rip it and she'll reward you in the end with cooler temps and more HP! | ||
| Krassh |
It will still boil fuel on hot days. After the new flash my bike ran cooler but still hot enough to boil fuel. They put insulation inside the frames of the '09s. If it still bugs me that is the way to go. And hey here is a thought. If the fuel dripping bugs you and you do not mind giving up some space in the tail section then pick up a charcoal evap canister for a Cali spec bike and that problem goes away. | ||
| Swordsman |
I don't have an 1125R, but I have to say, as an outside observer, the thought of boiling gasoline makes me a bit nervous.....  ~SM | ||
| Redscuell |
I myself wondered how ANY tolerable frame temp could make gasoline boil, so I looked it up: "The boiling point of gasoline varies, at atmospheric pressure, between 100 and 400 oF. A primary cause of this variance is the various additives in the gasoline from different refiners designed to meet different octane requirements." Source is http://wiki.answers.com/Q/What_is_the_boiling_poin t_of_gasoline | ||
| Carbonbigfoot |
So that would explain why some people haven't had that experience at all, even in the most extreme conditions... It's not hard to imagine that the environment created in the fuel tank on an 1125 is outside the envelope for the "design" of a particular fuel blend. R | ||
| Eaton_corners |
Does that mean a pertinent question could be : What brand of gas do each of us use ? | ||
| Eaton_corners |
Or maybe what region,state,city,et al. | ||
| Ekruizenga |
Ok here is my experience with boiling fuel: I have approx 5500 miles on bike currently typically us 93 octane no one specific brand. Gas boils when there was less than 4 gallons in tank, and outside temp of 80+, or lower outside temp with higher humidity or higher outside temp 85+ with lower humidity. the high humity and high temp is pretty normal here in VA during the summer. Have had all flashes and it still does it. CT temp still ranges from 180-195 with latest flash. Dealer told me that Buell told them that it is probably the vent, pushing vapor back into the gas so it is a bubbling not a boiling issue(don't know if I believe that) my tank temps have been around 138-140'F by the front fork and 115-120'F by the seat, gas temp has measured around 110-120. I have wrapped the headers and lined the inside of the tank by the air intakes with thermo tec heat barrier, didn't help. I now have a new vent, the new vent routing line to back passenger peg, temps outside have been between mid 30's to low 70's lately so haven't heard any gas boiling. My next step is to try some engine ice to see if it will make the raditors more efficent, thus drawing heat away from engine and out the front. I took video of this sound but I cannot cut it small enough to post. (Message edited by ekruizenga on November 04, 2008) (Message edited by ekruizenga on November 04, 2008) | ||
| Voodoo |
My bike is an 09 CR. From what I have read and been told, that this bike has all the heat "shielding" and software updates. I am an automotive tech for a living and the idea of boiling fuel does not excite me either. I think that the radiator fins need to be redesigned for better air flow and possible more coolant flow. Dosent bother me enough to stop riding the bike. I live outside of Raleigh and it gets damn hot and humid here. So this summer we will see. I am going to install engine ice or another similar product. I have not decided which yet. And yes I run 93 octane. | ||
| Thedavyboy |
I put in wetter water in my jeep wrangler and was not happy with it . I have a red 09 cr and I will not put it in my coolant . Just like my xb once the motor breaks in the cooler it will start running . the more miles I put on it the cooler it ran and the cr should do the same . | ||
| Redscuell |
Here's some additional info from a site that is quite scholarly and yet understandable. From my reading of its findings, the article suggests, relevant to our own inquiry, that (1) the higher octane required of a motorcycle engine like the Rotax (vs a car) is working against us in the boiling point area; and (2) we're advised to change brands even during the same season, until we get the driveability we want (including boiling fuel issues). "Be prepared to try several different brands of oxygenated or reformulated gasolines to identify the most suitable brand for your vehicle, and be prepared to change again with the seasons. This is because the refiners can choose the oxygenate they use to meet the regulations, and may choose to set some fuel properties, such as volatility, differently to their competitors." "Final Boiling Point.- Decreases in the final boiling point increase fuel octane. Aviation gasolines have much lower final boiling points than automotive gasolines. Note that final boiling points are being reduced because the higher boiling fractions are responsible for disproportionate quantities of pollutants and toxins." "For a typical carburetted engine, without engine management [27,38]:-Compression Ratio / Octane Number / Brake Thermal Efficiency ( Full Throttle ) 5:1 72 - 6:1 81 25 % 7:1 87 28 % 8:1 92 30 % 9:1 96 32 % 10:1 100 33 % 11:1 104 34 % 12:1 108 35 % Modern engines have improved significantly on this," The Buell site advises that the 1125 is operating with a 12.3:1 c.r. Source: http://www.faqs.org/faqs/autos/gasoline-faq/part1/ Feel free to read the source document and disagree with my reading of it! | ||
| Slypiranna |
"Modern engines have improved significantly on this," That is one reason that this is argumentative. | ||
| Redscuell |
Sly, not sure what you mean by 'argumentative', but the 'modern engines' reference applies only to the c.r.'s relationship to octane; and is nothing to do with the issue of boiling gasoline. Perhaps I put too much info into a single post; read the entire source link before jumping to conclusions one way or the other -- that's why the link was included. | ||
| Usmoto |
I seem to have a fuel boiling problem with my 25r when I use any other gas except the Shell station close to my house. I use the highest octane they have and even on the hottest days I don't have a boiling issue unless I go to a different station. I don't know if it's just coincidence or an actual difference in the gas. My bike does run very hot any time I'm riding under 30mph. I had a Firebolt before and it was a serious heater as well. I'm going for the 3rd reflash today. | ||
| Voodoo |
Yeah the bike gets hot, but not that hot. Maybe I will try Shell for awhile. |
