Need help with jets

[SteveCZ28]

ok now that christmas has passed i now feel ok with buying new jets for my 85 r. it runs super rich, and has problems idling. motor has maybe 30 minutes total run time, as ive just been heat cycling it and rode it down my alley and back 2 times. im needing a variety of jets to try to figure out what main jet i actually need. and i also need to try to figure out the slow jet also. i came across a 5 pack of jets offered by dg. but it says its a universal fit,and i dont know if it will actually fit my r or not. and i dont know which way i need to go for the slow jet. it is on stock jetting for both main and slow jets, and is a stock motor with a open k&n pod filter and full fmf exhaust. any help or input would be appreciated.

heres a linik to the variety pack i mentioned

http://www.sport-mann.com/eshopprod_...FIVE_-_PAC.htm

[SteveCZ28]

noone has any info or input for me?

[STiForester]

What is done to your motor and what exhaust are you runnin

[SteveCZ28]

2nd to last sentence

is a stock motor with a open k&n pod filter and full fmf exhaust

[Dirtcrasher]

If it's breathing that much, your gonna need a allot more fuel. I would buy the next couple sixes up of pilots and somewhere in the range of 7-10% larger mains.

Jetting cannot be done over the net, unless someone has the same build at your same altitude, your gonna have to play with it.

Make one change at a time starting with the main.

How can it be rich with a K+N pod on there? Imagine how easy it's taking in air and the pipe is less restrictive getting it out.

Sure your oil mix isn't a bit too much and masking the jetting issues?

[SteveCZ28]

im running 28:1 to help break it in. it is a brand new bottom up rebuilt motor. i heat cycled it 3 times for about 15/20 mins, took it for 1 ride and it is bogging too much to even hit power band, so i cant even do a plug chop. but when i do pull the plug it is soaked and a wet black when i pull it. so i doubt it needs more fuel than it already has. so i dont even know where to start. i dont even know where to get pilot jets from, but like in my 1st post i provided a link to the main jets, in a 5 pack, but i dont know if those will work for me or not

[Dirtcrasher]

^ Yeah, it's soaked/wet/black because it can't clear out. Get back on a regular premix and see where it's at. You've already heat cycled it.

But 100% hand down an open K and N are gonna want more fuel; ALLOT more fuel.

Don't be one of these guys that run the premix rich while they are still lean as hell (fuel to air mix) and blow up a fresh rebuild in a short time.........

[SteveCZ28]

i bought a full airbox/filter off a member from here. waiting for it to show up, so i can install it, and see how the bike acts then. if it acts ok, i might just stick with the airbox and lose the open k&n pod..

and ill mix up some fresh 32:1


i dont wanna blow this one up. thats why im asking for help lol...the original motor ran, but was letting the bottom end go as it had chunks of bearings coming apart on the crank


also forgot to mention, it doesnt want to idle, even with the idle screw adjusted all the way in...is this part of jetting also??

[pantera1975]

When I put on a full fmf system on my 86 R I went up 2 main and 1 pilot with a stock air box at 60-80 deg air temp at about 1000 ft elevation. And with that motor set up I also was running pump gas 91 octane and 40-1 klots r-50 oil.

[SteveCZ28]

where do i get pilot jets at? if i changed the pilot jet, would that help with idling?

[stroberts22]

Sounds like your are rich at idle. Have you tried to turn it out and see if you can get it to idle? The air screw tells you what pilot you need. If it is less than 1 turn in the pilot is lean. If it is more than 2 1/2 turns out your pilot is rich.

[SteveCZ28]

i tried turning the airscrew. it doesnt make a bit of difference

[pantera1975]

Try RmATV thats where I got all of mine from.

[stroberts22]

Do you still have the stock pe carb? Do you know what pilot is in it? What main is in it?

[whyzee]

What main jet are you running right now, what clip is the needle at and where is the air screw set at? ?
I bet you need a 148 main jet. Needle clip 2nd down from top and air screw 1 3/4 turns out from full in.