Jet sizes

Post by **Lostmycage** » Tue Sep 15, 2009 4:21 am

I got my jets from my dealer (this sounds a lot worse if you've ever played Fallout 3). They were about $5 each, but I figured with shipping costs and convenience... I was out maybe $5 over an internet store. Shipping can kill a deal.

babblefish · Post by **babblefish** » Tue Sep 15, 2009 10:25 pm

I'm thinking about just drilling out the stock jet until it runs right. I'm thinking a size 102 jet has a 1.02mm hole which is equivalent to a #60 (0.040") drill bit. A 105 jet is a #61 (0.041"), etc. The step sizes are kinda big, but I figure I'll just keep drilling it out until it runs crappy then drill a new jet with the previous smaller drill bit. Do you have any experience will drilling jets?

Post by **Lostmycage** » Wed Sep 16, 2009 12:16 am

Not jets specifically, but I've tinkered with drill presses before. It's just brass, right?

If I were gonna drill jets, I'd find a receiver unit that has the same threads as the jets and mount that to a base (or clamp). Center it on the press and you can drill all day long with perfect (assuming it's centered) results.

Of course if I did that, I'd definitely take some pics... (hint, hint)

If I were to guess, I'd say the thread is M4 or M5, you could probably check the threads at a hardware store (I really want one of those thread-checkers, but they bolt them down and hide all the tools elsewhere in the store... I just don't have the focus to remember to bring the tools to the thread-checker and unbolt it...).

babblefish · Post by **babblefish** » Wed Sep 16, 2009 1:27 am

Actually, I have a lathe. Can't get much more accurate than that. Although that may not be necessary because the size difference is so small that the drill bit will center itself.

Post by **Lostmycage** » Wed Sep 16, 2009 3:36 am

Fine, fine, you win.

Man, I wish I had a full machine shop... I'd have a hell of a lot of fun! That reminds me, I need to draw up some plans for a garage. I keep putting that off.

babblefish · Post by **babblefish** » Wed Sep 16, 2009 4:23 am

I like your previous (vintage?) avatar better....

Post by **Lostmycage** » Wed Sep 16, 2009 5:19 am

babblefish wrote:I like your previous (vintage?) avatar better....

Change is fun...

babblefish · Post by **babblefish** » Wed Sep 16, 2009 9:55 pm

I meant the one KRUSTYburger did for you!

bicyclerider · Post by **bicyclerider** » Tue Mar 15, 2011 6:16 pm

not trying to butt in gang...
old topic...

but where is the carb on the blur located?
is it under the seat? top of the engine? I see there is something there that appears to be a carb. Has a black plastic top on it with a long spring under it.

What is the easiest way to access the carb and give it a cleaning (spray it clean with gumout or the like) to get it ready to ride for the season?

or is it hidden behind the black air filter? box
Got pics?

thanks

Mark