86 250r need jetting first time doing it

[honda250r86]

I just rebuilted my top end .50mm over , uni air filter , installed a brand new esr reed valve , brand new esr exhaust and silencer and my mixture is 32:1 oil: amsoil

what size should my main jet and pillot jet be and where should my clip be on my needle ?

this sparkplug is after a chop test
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[badass350x]

chop test at full throttle? looks a little on the lean side, pics don't do it a lot of justice,,, need more info!!

[honda250r86]

yes it was from 1 to 6 gear at full throttle , i got the stock carburetor and the air filter lid was off , last time i have check the compression was at 150-155 psi AirScrew (number of turns out): im not sure how much and also the altitude :52 feets
il try tomorrow with the air filter lid on if there any change to the plug ( new plug) is it possible to jet it right by just turnin the air screw in till it idel fine ?

[BOB MARLIN]

You just rebuilt the top end and only have 155 psi ?.

[honda250r86]

yeah its probly because i used my old head gasket for the rebuild because my new head gasket was leaking prestone when i installed it

and i only tested the compression before i started breakin in the engine
after 1 gas tank burn since the break in i got 160 psi now

[BOB MARLIN]

The low service limit is 170 psi - minimum. You should be above 180 psi. I am not sure you you can even start to jet it right at that low of compression.

[honda250r86]

Il probly go and buy a 89 cr 250 head gasket I heard it should boost my compression