friggin

Well in the last year I built a 1982 YZ490 and blew it to pieces...:bang head: Then I got a 1992 Yz250...and blew it to pieces:bang head: Today I picked up my notoriously fast 1977 YZ400. Lets see if I can make this one last a bit longer! Got it for free,ganna see if I can get it cleaned up...

Got sharp ass teeth too! Been talking smack about it so I broke down and went for the Marks pipes special for $699. Also got the progressive front springs and K&N filter on order as well. I have full intentions of beating this monkey down, and making him my Bitch!!:punk:

OK Went to start up and I've started getting loud backfires the past couple of times when I hit the start button. started and ran for about an hour on the highway..cruising at 70ish..all of a sudden loss of power (power did not cut off though, RPM drops to about 1000), then a loud backfire, then...