I have been lazy updating this, then lazy posting this too. I wrote this on Tuesday and now it is Saturday that I am posting this. So this will be the first part of a big string of updates. I took a week off after the last race to just relax and get parts on order and got side tracked with some other projects.
My first project was getting my 2007 Triumph Tiger 1050i to run breath better. Anyone who has ridden with me has heard the big backfires and smelt overall rich smelling exhaust. Both are byproducts from the "race style" exhaust modifications I made last year. I have tried a handful of different tunes over the past year without much luck; at the end of the day I think the bike was just not sucking enough air to balance out the open exhaust. After hearing that I can stuff a Speed Triple tune into it if I swap the air box over to a Speed Triple specification unit I figured I would just try to modify the current airbox. The Tiger ended up get getting her spring cleaning too, it’s a bit weird seeing it all clean and shinny.
After opening the airbox and looking at the openings for the throttle bodies compared to the opening in the airbox (which is a lot smaller on the Tiger than the other 1050i motors) there is no doubt why the motor is having a tough time breathing.
The snorkel pulled out laying next the the intakes, note the size difference.
The two holes the bike now breaths though, the snorkel only used one of the holes to suck air though.
I pulled the snorkel out, opening the second air box breather hole up as well. Even with the same tune (I think I currently have the Arrow Race tune) it is running a lot better, almost no popping on deceleration, and it is popping now not huge "BANG" backfires as unburnt fuel just cooks off in the exhaust system. I am pretty happy at this point with it, next time I am at the Triumph shop I will probably try a Speed Triple race tune or something.
The second project was changing the seals and fork oil on both the Husqvarnas. The inside of the CR400 forks were not too bad, but I had also changed the oil before the last race. On both the bikes getting the oil forks seals out was a little bit of a pain, I ended up taking a Dremel tool to the seals to make it easier.
Cutting the old seals out, and you can also see the awesome double seal set-up.
While I was in the forks I did find the CR400 fork springs are undersized and in need of replacement. I also noted that the fork travel on it is a meager 6". The CR250 forks were pretty gross inside, as you can see in the picture there was a lot of muddy burnt up old oil at the bottom of the tubes.
Yummy muddy crap I found in the fork tube.
The oil that was in the forks didn't really smell too bad when I dumped it, so I think it might have been changed at some point and the guts were just not cleaned out. I used 30wt fork oil in both sets of forks, hopefully that will do fine, the factory manual calls for 10wt-30wt motor oil. I also pulled out the CR250 and washed it off a bit to take the "before" picture.
Don't mind the gaping hole where there is no motor.
The only other things really was a night put into trying to get the GS750 running so I can sell it, and spending a good part of the past weekend helping my buddy Zach get his GS500 back on the road again after a year slumber. Between that and helping Kellen with motorcycle and motorcycle gear shopping I have been dubbed a "Motorcycle Superhero." So that is pretty rad too.
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