Honda CRF250L - CCC Modifications |
Click pictures to supersize.
This collection of information is not intended to be used on street-legal CRF250Ls, and is similar in spirit to the Honda Closed Course Competition Mods that were published in 2004 for the CRF250X. I'll just refer to this collection as the CRFL CCC mods in the future.
I've broken the mods down as follows:
Removing miscellaneous parts
Modifying the stock muffler
Installing an FMF muffler
Quieting down the FMF muffler.
Removing miscellaneous parts - Evap canister, PAIR valve, crankcase breather hose. The Evap canister is buried under hoses and cables in the space above the transmission and just ahead of the central vertical frame member. Start by disconnecting the hoses. Each hose is labeled on the canister body.
Right end:
Left end: Disconnect the electrical connecter on the top of the canister. Cover the exposed wire harness end with electrical or other tape and tie the end down with a zip tie to a nearby harness. Unscrew the two mounting bolts from the two metal brackets. Slide the metal brackets out of the rubber straps - difficult to do. Alternately, slide the rubber retainer strap partially off the right end of the canister; this allows the canister some freedom of movement. Remove the canister from whichever side of the bike seems easiest.
The PAIR valve is located near the radiator overflow tank on the right-front of the frame. Remove the right-side radiator shroud. PICS OF LOCATION. Disconnect the electrical connecter on the PAIR valve. Cover the exposed wire harness end with electrical or other tape and tie the end down with a zip tie to a nearby harness.
Plastic cap and medium clamp - you need 3 of each; 1 here and 2 below.
Remove the PAIR valve from its mount. reinstall rad shroud etc.
Remove the crankcase breather hose from the crankcase tube and the lower airbox port. Seal the lower airbox port with a plastic cap and medium clamp.
Note the absence of clutter in the central area above the transmission - you've removed a bunch.
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Installing an FMF muffler See the Exhaust changes panel on the Modifications web page. |
Quieting down the FMF muffler
More to come, stay tuned... |