wr 400 jetting in colorado---will it be rich?
Posted July 15, 2003 - 03:36 PM
Posted July 15, 2003 - 05:36 PM
Posted July 15, 2003 - 05:59 PM
8500 feet sounds like Rampart Range or somewhere similar. There are trails up to 13,000+ and at that point, I'd rejet for sure. At least bring smaller mains and you can drop the needle if the bike runs really poor.
If you decide not to rejet your bike, I suggest you bring several spark plugs with you on your ride with the Yamaha plug wrench. If you foul the plug, you need to replace it on the trail or start pushing the bike.
You can search for LarryCo's jetting and see how far off you are and get an idea of how rich you'll be running. Before I did this jetting, I was running a 160 and a 158 main depending on how high I was riding. Stock was a 165 main. It worked okay but is much better since I changed all the jets.
Posted July 16, 2003 - 05:37 AM
Posted July 16, 2003 - 04:05 PM