HT Main Jet Size?

Pablo · #11 (**permalink**) 06-25-2008, 10:07 AM

Quote:

Originally Posted by misteright1_99

#68 Drill = .031 Pablo

Thanks - saved me the hassle of searching the net, getting out Machinery' s handbook, finding a wallchart....

Saddletramp1200 · #12 (**permalink**) 06-25-2008, 10:57 PM

The rubber O ring that should be there does not change the gas to air mixture. The AIR needle does. The .48cc is about 23-30. Seventy cc about 30-36 at most. One to, One & One half turns. I run 140 mains in my goldwing but I'm pushin' 6 carbs.

**Bikeguy Joe** · #13 (**permalink**) 06-26-2008, 08:17 AM

These carbs don't have an air needle.

Mikodawg · #14 (**permalink**) 08-14-2008, 08:17 PM

My HT80 ran too rich on the stock jet after some 150 mile break-in. I soldered up the stock jet and began with a .4mm(way too lean) I settled on the .6mm (.023) with the needle clip is at the top. I getting a good burn on the plug and picked up about 2mph.
I am running a 32:1 mixture now using Belray MC-1 synthetic. (As a matter of interest the Powerking 80cc actually measures 69.3cc.)

wizzizer · #15 (**permalink**) 09-08-2008, 04:07 PM

Hi, i am new to this forum and i have recently drilled my mainjet out waaay too big. now i would like to know how to solder up the hole and redrill it. do i need brass solder? or what? thanks!

wizzizer · #16 (**permalink**) 09-08-2008, 04:45 PM

this may be a dumb question but i went to the dellorto site but all the jets were listed as 5mm, how do i know what size the orafice is of those jets (.7mm,etc)?

thanks.

Pablo · #17 (**permalink**) 09-08-2008, 04:49 PM

Quote:

Originally Posted by wizzizer

this may be a dumb question but i went to the dellorto site but all the jets were listed as 5mm, how do i know what size the orafice is of those jets (.7mm,etc)?

thanks.

I know what you mean. It's by the part # - just stick your own decimal point in. #70 is .70 ,#65 is .65, etc

Saddletramp1200 · #18 (**permalink**) 09-08-2008, 04:50 PM

I have never heard of a jet being soldered with any luck. New one is my guess.

wizzizer · #19 (**permalink**) 09-08-2008, 07:02 PM

i read in another post that some were drilling and soldering and redrilling to try to find the right size so i thought it was common, oh well. i just ordered a few from dellorto anyway.

thanks guys!

**Norman** · #20 (**permalink**) 09-12-2008, 07:11 PM

I use a propane torch and electrical solder, I also use a resin type flux when soldering. Don't need much heat use needle nose pliers to hold jet in the fire then tough the solder to the hole and it wil flow into the hole very little solder is needed, to drill the hole I use a pin vice to with micro drill bits to drill my main jets by hand with the main jet mounted in a vice. works for me with no problems.