Hotter Plug?

[triplexxx]

I bought a hotter spark plug for my cold blooded 600v-max. I went from BR9ES to a 8. Should I expect any problems?

 

[Ding]

What specific problems are you trying to address? (What do you mean by "cold-blooded"?)

 

[triplexxx]

Seems like alot of these triple lungers are slow at warming up. Mine has a tendancy to stumble alot. I try to let it warm up and listen to the engine and it seems to drag a little as it trys to warm up. I put my hands under the exhaust it still feels cold after ten or so minutes. The plugs look black and wet.

 

[Ding]

Which sled?

 

[triplexxx]

2003 v-max600 triple

 

[Ding]

I wouldn't go with a hotter plug as all this means is that the plug will not dissipate heat to the head as fast and thus the plug will run hotter. If it runs too hot it can cause engine damage. I doubt going to a BR8ES will go that far, but I still wouldn't do it.

I would however look at your oil pump setting (make sure the cable housing it back together), and your jetting. It does sound like you either have too much oil or you are too rich.

I don't have my tech info here with me, but if my memory serves me correctly Yamaha has still not put a thermostat on the 600 triple engine. This does not allow the engine to warm up unless the engine gets worked a little. You may consider adding a thermostat or a heater depending on what climate you ride in.

 

[triplexxx]

Thanks Ding sounds like good advice, I thought the advice I got at autozone was not good. I went in there to get BR9ES which what my sled calls for and they was out, and the guy behind the counter recommended the eights.