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Posted

Just did a new top end .30 over t5's.. trinity stage 4 port.. pro design coolhead... jets in there now are 52 pilot's 170 mains at 4k feet the needle i couldn't read. is there an easy way to get the needle out? It seems to be a little rich. how far should i jet smaller and where'would one buy these jets? thanks

Posted

Just did a new top end .30 over t5's.. trinity stage 4 port.. pro design coolhead... jets in there now are 52 pilot's 170 mains at 4k feet the needle i couldn't read. is there an easy way to get the needle out? It seems to be a little rich. how far should i jet smaller and where'would one buy these jets? thanks

 

Yes, the needle comes out, hold the throttle spring back up against cap and then push throttle cable down a little and out.

 

You seem VERY rich, I run 145 mains, 42 pilot, and CEL needle 2nd from top @ 5000 feet with the mods below in my sig.

Posted

Thanks sonofsand. I talked to jeff at fast,he agrees and is sending me some jets. I think this thing was jetted for sea level. If I ever get up to st anns i'll look you up.

Posted

Thanks sonofsand. I talked to jeff at fast,he agrees and is sending me some jets. I think this thing was jetted for sea level. If I ever get up to st anns i'll look you up.

 

You are welcome. Yeah, look me up, best dunes ever up here.

Posted

x2 what sonofsand said. I think you are quite rich.

 

I don´t know your porting, but I´m at sea level and I also have very similar mod´s like yours.

 

In the summer time I usually need 150 to 155 mains and 40 to 45 pilots. with 45 pilots I can go over winter. Also in the hottest summer days those 150 mains seems to be a tad on the rich side, but I don´t have any smaller main jets.

160 main was good around -4*C to -6*C

 

Also my friends 421 CUB with CPI pipes and race gas was a tad rich with 162 mains on the dyno(he didn´t have any smaller to test). Temp was +12*C. Now it´s closer to 15-17*C and he need go under 160...maybe 158.

 

The largest mains I have used was 175 and that was the coldest I have ever rode with my Banshee, It was -24*C.

 

 

-Pasi S.

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