sprtrx300ex
02-23-2004, 04:51 PM
I put my R-4 S-Bend slip-on on my 400ex last october. It has a nice sound, and great torque. I tried many different jetting combos, and by the time I got close Cold weather was here. So I ended up jetting it to DJ146 main, DJ needle 3rd notch,42 pilot w/ 2 turns out. It semed a little rich at ideal nd maybe a little bit lean on top, but rode and felt great. I could not get a color on the plug not matter what size I was running.
It has recently warmed up (60's) and I took the 400 out. It has an INCREDABLE amount of torque and acceleration. I was simply amazed at how all of the sudden as soon as it warms up it runs so much stronger. However, the pilot stills feels rich. I plan on going down to a 40.
So, my question is, Do you think that the jetting is right now, or do you think it is running lean, causing the engine to run hotter, which I have heard lean = faster. All opinions are appriciated.
Thanks
It has recently warmed up (60's) and I took the 400 out. It has an INCREDABLE amount of torque and acceleration. I was simply amazed at how all of the sudden as soon as it warms up it runs so much stronger. However, the pilot stills feels rich. I plan on going down to a 40.
So, my question is, Do you think that the jetting is right now, or do you think it is running lean, causing the engine to run hotter, which I have heard lean = faster. All opinions are appriciated.
Thanks