I dont get it

Mystic · Post by **Mystic** » Mon Jan 23, 2012 4:16 pm

I suck at tuning hahahha setup polini contesta 21mm oko 45/100 stock pipe ruima vari with 9g 1.5k contra 1.5k grabbers with 9.1 gears 32:1 premix bp8hs plug 45 mph what am I doing wrong? heck my 43mm bore did 43mph

bakaracer · Post by **bakaracer** » Mon Jan 23, 2012 4:29 pm

mark the variator face with a sharpie and see how high the belt rides. what color is the plug? you using a cylinder head temp gauge?

Mystic · Post by **Mystic** » Mon Jan 23, 2012 5:27 pm

I havent really run it enough for a proper plug chop but so far it is a reddish brown on the end and black at the ring BUT its a used plug too so I will need to get a new one to really check it and no I dont have a cylinder head temp gauge I have a digital probe thermometer I stick on the side of the cylinder and on the head to get an estimate of the temps. measured around 290 after a short WOT run

switched to my prodigy with 9g and stock trans to eliminate that variable till I get the carb tuned, will mark the vari with a sharpie and drop to a 95 tomorrow and see where that puts me

evilone · Post by **evilone** » Mon Jan 23, 2012 5:29 pm

Hmmm, i did 58 mph with the stock carb

Mystic · Post by **Mystic** » Mon Jan 23, 2012 5:33 pm

evilone wrote:Hmmm, i did 58 mph with the stock carb

I know that is what has me messed up hahahha

evilone · Post by **evilone** » Mon Jan 23, 2012 5:36 pm

Just curious what your compression ended up at.

Mystic · Post by **Mystic** » Mon Jan 23, 2012 5:44 pm

havent checked that yet

it starts easy and has plenty of power on the bottom so I dont think that is my problem. Will check that tomorrow as well

swimmingfree · Post by **swimmingfree** » Mon Jan 23, 2012 8:17 pm

did you put in upside down??????
lol olo
swimmingfree

mark the variator like bakaracer said so you no if you using the hole thing.!!!

Mystic · Post by **Mystic** » Mon Jan 23, 2012 9:03 pm

I am pretty sure the belt is riding almost all the way out on the vari but will make sure tomorrow.

kingkamehameha · Post by **kingkamehameha** » Mon Jan 23, 2012 9:45 pm

Put a better pipe on and those 9:1 gears top out quick

kingkamehameha · Post by **kingkamehameha** » Mon Jan 23, 2012 9:48 pm

To small da carb and pipe go with a 24 or 26mm carb and get a better breathing pipe. You should think about getting 8.44:1 gears. Those jets are too small for 32:1 premix.

Mystic · Post by **Mystic** » Mon Jan 23, 2012 9:58 pm

Definately need a better pipe

Just did a compression test 150psi cold. I did notice if i turned the a/f screw in all the way it ran better than at 1 1/2 out but I think the 45 pilot is too big. Think I may take the mani off and make sure my gaskets are good and seal the vacuum nipple screw

Mystic · Post by **Mystic** » Mon Jan 23, 2012 10:44 pm

What about the metal tabs on the reeds between the reed and the stop? would the fuel flow better with or without them?

Bear45-70 · Post by **Bear45-70** » Mon Jan 23, 2012 11:04 pm

Without but the difference will only be a couple hundred RPM.

veedubh20 · Post by **veedubh20** » Tue Jan 24, 2012 12:26 am

Contesta Does work well on sr stock pipe 8.4. Complete s tranny and 24mm carb

21oko need more fuel
On main jet that why turn red/light brown

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