ochster
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- Mar 11, 2000
- 689
- 0
Getting ready to spend a day with the welder (little Jeff), to finalize mounting locations, for the muffler and airbox. This is on the "long in tooth", project XR300, I just put a custom subframe on.
In locating the airbox, there will be a need for a nearly 25mm spacer, in the intake tract. The XR250/300, has a fairly short intake compared to many other machines. I'm wondering if it would be worth while, to fabricate a longer intake manifold, instead of simply putting a coupler on the back of the carb. I could use a slight deviation in the mounting angle of the carb., and this would also allow me to incorporate that into the new manifold. Is there something to be gained here?
I also am going to be aligning and mounting the muffler. I have alway's like the megaphone design muffler on the small bores. Spark arrestability, is important, and the supertrapp is easy to deal with. Should I be broadening my thinking, being the new subframe can be made to fit anything right now?
I realize these question are very general in nature, as well as being subjective to testing. Would just like to hear from others, and get some input, while things are still in the "soft" stage.
Thank's
Mark
In locating the airbox, there will be a need for a nearly 25mm spacer, in the intake tract. The XR250/300, has a fairly short intake compared to many other machines. I'm wondering if it would be worth while, to fabricate a longer intake manifold, instead of simply putting a coupler on the back of the carb. I could use a slight deviation in the mounting angle of the carb., and this would also allow me to incorporate that into the new manifold. Is there something to be gained here?
I also am going to be aligning and mounting the muffler. I have alway's like the megaphone design muffler on the small bores. Spark arrestability, is important, and the supertrapp is easy to deal with. Should I be broadening my thinking, being the new subframe can be made to fit anything right now?
I realize these question are very general in nature, as well as being subjective to testing. Would just like to hear from others, and get some input, while things are still in the "soft" stage.
Thank's
Mark