tuning with taz parts

[jokim00]

Hopefully I get a lot of people who use taz's parts

To everyone who uses taz's parts, I just want to do a survey on your tuning set up.
Please don't bash me for saying how the tuning differs from area to area because I know altitudes are different with everyone.

If you are running the:
48mm bbk
21mm carb
16*81 gear ratio


What is your fuel:oil ratio?
What is your main jet size?
pilot jet size?

[SuprasNsprees]

Hopefully I get a lot of people who use taz's parts

To everyone who uses taz's parts, I just want to do a survey on your tuning set up.
Please don't bash me for saying how the tuning differs from area to area because I know altitudes are different with everyone.

If you are running the:
48mm bbk
21mm carb
16*81 gear ratio


What is your fuel:oil ratio?
What is your main jet size?
pilot jet size?

I have that setup. I use the pilot that came with the kit which is a hair lean according to my CHT, but I don't have any problems with it. Carb came with a 125 main in it, but he tossed a 95 in with the manifold kit. I put the 95 in, and it too has been great. my CHTs for WOT pulls never go over 360 degress, and that's full lean on the clip

as far as oil goes.. I'm still using the oil pump, so i just put a splash in the fuel tank
each fill-up. I stopped measuring several hundred miles ago

[jokim00]

man i'm having the biggest problem right now

i removed the oil pump and started premixing with 32:1 exactly and it won't take the 95 main or even the 42 pilot
i'm all the way down to a 88 main and a 35 pilot. somethings terribly wrong.

before i mixed precisely, i just filled the tank to the top and just put in 2.3 oz of oil every fill up.

it's so weird right now i don't know what to do anymore.

what two stroke oil do you use?

taz is too busy to help

[Bear45-70]

Pre-mixing means you go richer NOT leaner. You are lucky you have not burnt up the piston that lean.

[jokim00]

i did go richer bear
i went back to 32:1 because it seems the 40:1 premix needs smaller jets
currently, i am running 32:1 with a 95 main and a 42 pilot

the thing i dont understand is though, taz recommended in a piece of paper he sends with all of his kits to use 32:1 for break in and 40:1 or 44:1.

His carb comes with a 42 pilot and a 102 main and it's supposed to be a plug and run sort of deal but i had to downjet to a 35 pilot and a 88 main with a 40:1. possibly more but i didn't have smaller sizes.

So I'm going back to the 32:1 mix and try to work around it.

the thing I did before was premix in the tank and i guess the ratio was way lower since it added up and i eyeballed it.

[Bear45-70]

i did go richer bear
i went back to 32:1 because it seems the 40:1 premix needs smaller jets
currently, i am running 32:1 with a 95 main and a 42 pilot

the thing i dont understand is though, taz recommended in a piece of paper he sends with all of his kits to use 32:1 for break in and 40:1 or 44:1.

His carb comes with a 42 pilot and a 102 main and it's supposed to be a plug and run sort of deal but i had to downjet to a 35 pilot and a 88 main with a 40:1. possibly more but i didn't have smaller sizes.

So I'm going back to the 32:1 mix and try to work around it.

the thing I did before was premix in the tank and i guess the ratio was way lower since it added up and i eyeballed it.

Taz's info can't be that far off. Something isn't right. Changing from 32 to 1 to 40 to1 oil mix might require one step down on the main but 102 or even 95 to an 88 is just not possible. Have you checked to make sure the slide is opening all the way at WOT?

[jokim00]

I'll check the slide tomorrow. but as far as i checked, after seeing how it was fast idling i checked the throttle cable to see if came down all the way and it hadn't so i adjusted the hex nut on the cable to lower it all the way. maybe this causes the slide to not go up all the way anymore..hmm i'll double check tomorrow.

and yes, i was doing some reading and saw that a higher oil:fuel mixture makes it leaner and would require bigger jets.
so i was thinking and when i was refueling by fueling to the top and just dumping 2.6oz of oil into the fuel tank and mixing thru that make it really really lean.

So when i precisely measured 4 oz to 1 gal for a 32:1 mix, i was getting problems because now it was all richer.
but it still doesn't make sense.

taz recommended 40:1 or 44:1 making it really rich requiring smaller jets. and indeed, he recommended a 95 instead of the 102 the 21mm carb came with. he didn't say anything about having to change the needle clip or downjetting the pilot.

still, it bogs like a freak.
i'm guessing it's the oil
i use this
http://www.oreillyauto.com/site/c/detai ... &ppt=C1941

this is so irritating.
Right now i have the precisely measured 32:1 fuel (87 octane with 4oz of the oil above)
I tried jetting by starting with the 102 main and the 42 pilot but the ped would start and bog after 3 seconds or less

So i downjet to 35 pilot and 88 main.
I need help haha.

Thanks bear

[Bear45-70]

Too big a carb will fall flat on it's face if you crash the throttle wide open. Try slowly rolling into it to about half throttle and when the revs come up to about 3,000 the going to WOT.