Carb mechanic wanted

[Spyderman]

i mean the top of the plug is the end the spark jumps across

[chuck hahn]

OK so by TOP i am looking at the two electrodes.. If you lay a plug in my hand and ask me which end is the top i will point at the end the wire hooks to but thats not what you mean..

[Spyderman]

OK so by TOP i am looking at the two electrodes.. If you lay a plug in my hand and ask me which end is the top i will point at the end the wire hooks to but thats not what you mean..

right i mean the top of the plug is the other end from where the wire connects to

[chuck hahn]

i got it..thats where i get twisted. I literally take what you guys type and then i am wrong and all twisted around. I get it now.. thanks.

[Spyderman]

no problem at all
now remember that each circuit is controlled by throttle position and not speed on your speedo or by RPM on your tach neither speed or RPM affect what a carb does on any of the circuits
only throttle position controls what each circuit does

[1948man]

I've read somewhere that you need some kind of special light and lens to see deep into the recessed area of the ceramic. Is this true. I was doing plug chops today and had a hard time seeing the main jet area of the ceramic well.

[Spyderman]

also i hope that you noticed that i gave you the stock jet sizes and needle and needle jet size for your carbs
and the settings for the pilot fuel screws and air screws are just a starting point you may need to fine tune them to get it perfect
also remember that those screws will be different for each carb that is why you need to do the plug chops
for example carb #1 could be @ 5/8 of a turn out #2 @ 3/4 #3 @ 5/8 and #4 @ 7/8
your plug for each cylinder will tell you where you need to set the screws

again i hope i have helped you to get a better grip on getting your carbs set up right

[Spyderman]

I've read somewhere that you need some kind of special light and lens to see deep into the recessed area of the ceramic. Is this true. I was doing plug chops today and had a hard time seeing the main jet area of the ceramic well.

good sunlight and a magnifying glass will do it works for me

[1948man]

Thanks, will carry a magnifying glass next time.

[chuck hahn]

i was already thinking of the mag glass..

[chuck hahn]

330 Texas time..I just got home to find the jets from Z1 in the mail..I wll be tearing these carbs down and i will post all the numbers i find on the parts..then we can assemble from there...

[chuck hahn]

OK..so heres what i have for numbers

Cutaway at the bottom of the slides is 1.5
The needle jets that are in it are 5F21 and the clips are on the ctr groove
The emulsion tubes i couldnt find any number on them.

So heres my plan of attack..I am gonna put in the 100 main jets, the 15 pilot jets, spray everything down with carb cleaner and compressed air and poke out all the little holes to be sure they are open, and reassemble....sound reasonable???

[chuck hahn]

I have done the following..
Installed the new 100 mains and the new 15 pilot jets
verified the correct needle jets were in the carbs they were ..5F21
verified all the clips were in the 3rd groove.
I recleaned all the holes in the emullsion tubes and took out all the pilot jets to be sure the needle ends werent damaged and to spray carb cleaner thru them as well
did the same with the air screws and passages.
After poking and carb dleaner sraying i blew comoressed air thru all passages.
verified all the float heights as per Rustybroncos instructions.
verified the little sringy thing on the float valves werent stuck
set the pilot screws at 7/8 out and the air screws at 1 1/2 out.
reassembled and installed on the bike. She fired right up and i almost immediately noticed the difference in idle smoothness and theought ..heyn this is a good sign. Next i stuffed my pockets with tools and took it out on the freeway. I decided i woul ride till i found an exit and do a plug chop and just get over as far as i could from traffic. I checkd the plugs and they a looked ok to me and just a bit of tan about 1/16 to 1/6 up the porcellan from the electrodes. I adjusted the air screws IN 1/8 turn and took it for another ride. now they are a bit more tan but way from being blackened, so i figure i am real close. I then took it back mout again and tried to ride it like i stold it. It has way more response now and really wants to pull..MUCH MUCH MUCH different than what it was acting like before!! I was going 75 in 5th gear and just turned the throttle a bit more open and it didnt couch or anything. It just started climbing out as i would expect it to do. Thats the good news..now the bad. I got 3 more bikes that i want to be sure are set up accordingly..I was very intimidated and confused as to what you all were trying to explain but it is abit less confusing now and i want to say thanks to all of you, even though i must have had a lot of you really frustrated with me. So here is the final set up as it sits right now::

100 main jets
15 pilot jets
pilot jet screws out 7/8
air screws out 1 3/8
5F21 needle jets clip on center groove.

[rustybronco]

One question still remains... Did you bench sync them as I suggested?

[chuck hahn]

yes..i left a message cuz i knew you were doing the floor trim... I set them looking from the engine side..just a guess that it was what you meant. just a sliver in number 1 and then set 2 thru 4 to lokk exactly like number 1.