| Author | Message | ||
     Rdes65 |
Anyone ever run straight pipes on a Buell? I know it sounds good, sure there would be a little loss of power, but what happens to the engine if anything? I heard tale of the motor running hotter and burning up pistons. Any truth to this? THANKS!!! | ||
| Aaron |
Anyone ever run straight pipes on a Buell? Yes. I know it sounds good, sure there would be a little loss of power Say what? Narrowing, yes. Loss, no. but what happens to the engine if anything? I heard tale of the motor running hotter and burning up pistons. Any truth to this? Unbaffled straight pipes tend to work good at one rpm, where the negative wave generated by the outlet hits the chamber. Get too far from that rpm and yes, I could see a positive pressure wave at overlap time instead, and you're right, that wouldn't be good. | ||
| Craig2324 |
I want to run a straight pipe on my 1999 X-1. It will be about the same length as the factory pipe. Any advise on what size pipe I should step it down to from the 2 1/2 in header pipe. I have the Power Commander, Race ECM, and a Modified Air Box w/K&N Filter. Any and all advise appreciated | ||
| Aaron |
I dyno'ed an X1 last April that had a straight pipe replacing the stock muffler ...  | ||
| Craig2324 |
What was the diameter of the pipe, length, and any modifications to the dyno'ed bike? Also, what was the reading with the stock muffler? | ||
| Aaron |
This is just something that was rolled onto the dyno during a shootout. I don't have any details or before/after information. | ||
| Doncasto |
The straight pipe on the above bike was a cobbed together muffler shop slip on built by the X-1s previous owner to satisfy his need for noise. It used the stock muffler angle from the header (2 1/2 inch) to just about the front of the engine where it then expanded to 4 inches. It carried that diameter to where it ended at about the back of the primary. | ||
| Ccemn1 |
Clarkie, is that you??? | ||
| Jackbequick |
For the "seat of the pants" perspective, the most noticeable thing will probably be be the torque loss in the lower to mid RPMs. On a carburated engine you need to plan on having to work out the low speed and high speed jets needed. If the high speed jet is not rich enough you can experience over heating and sustained higher RPM can melt a hole in the piston. I have no experience with the EFI engines but I assume that there is some avenue for getting the fuel/air mixture right. Jack |
