heat issues

[05fjrBluedevil]

Just wondering, since some do and some do not have heat issues, could it not just be slightly out of timing firing a little late that is causing some to be hotter than others

I'm bored, 091606 dropped off bike still waiting for parts.

 

[keithaba]

IMHO, it's differences in peoples sensitivity to heat. I would love to see a database of a couple hundred 04's and 05's to see if there is variance in the heat output at a constant temperature. Some people ride in the upper 80's and 90's, while others ride in the 60's and 70's. Some people ride in stop and go traffic, while some ride on open roads and highways. I'd be willing to bet most 04's and 05's have very similar heat output. Until someone shows me some data that specifies different, I don't beleive it.

Note* I did not say the 06 didn't run cooler than the 04-05.

Note* I did not say it's not possible that there are heat differences, but I've never seen any data.

 

[C&C]

+1 to what keithaba said.

I find that my bike is too hot in the summer and not hot enough in the winter.

 

[conwest]

Keith is on the money here. They are all hot up to and including `05`s. Aside from the already mentioned environmental and people tolerances diffs, there is a bunch of owners out there that exist in full blown denial concerning anything negative about the FJR. True love, you might say. :blink:

 

[Ignacio]

Keith is on the money here. They are all hot up to and including `05`s. Aside from the already mentioned environmental and people tolerances diffs, there is a bunch of owners out there that exist in full blown denial concerning anything negative about the FJR. True love, you might say. :blink:

It's not denial my friend. It's actually enlightment.

Those in the know understand the physics that a 1300cc engine is going to make in terms of heat. The years don't make more or less heat. The question never has been really about heat, but more about how the heat is managed, and to an extent about opinion thresholds.

I'm one of those that think the '06 are the ones with the heat management issue....not the '03 to '05. Instead of heat spread out evenly from the nads to the ankles, the '06 directs it into a small blast furnace around the ankle....particularly the left one. Glad I don't have that "problem".

But, I am glad this thread is where it is though. A clue how this thread will go.

 

[jestal]

Not to debate the issue of whether the FJR is "too hot"......but......however hot it seems is not likely due to differences in ignition timing. With a fixed reluctor wheel on the crank and electronic ignition controlled by the PCM the differences in ignition timing from bike to bike are probably in the 10ths of a degree...not anything that would provide a perceiveable difference in the exhaust temperature.

I don't think the engine or bike generates or rejects too much or too little heat at all given that it is a 1300 CC high output engine. It is just the air flow management that changes the perception of the bike being "hot." Mine has gone from what I personally considered uncomfortably hot to perfectly cool in comparison and it was done by changing airflow under the tank and from the radiator.

The other factor to consider with the FJR that has also proven to affect the hotness of it is the catalytic converter and the location of the converter. Unquestionably the converter generates a great deal of heat that bikes without a cat would not have to deal with. The under bike location of the cat means that the rider steeps in the heat when idling. When I took mine off there was an immediate reduction in the heat perceived at very low speeds and idling. So this is particular to the FJR but would apply to all future bikes I would guess as they will all end up with catalysts.