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Author Topic:   carb question?

Posts: 5
From: vancouver canada
Registered: Apr 2002

posted 05-15-2002 01:44 AM     Click Here to See the Profile for Racin'Jason342   Click Here to Email Racin'Jason342     Edit/Delete Message   Reply w/Quote
how can i get my motor to run leaner in the 2000 to 3500 rpm area.the jetting is good for the peak power area but really fat down low,my carb has removable airbleeds,can i tune this with these if so can you recomend how(smaller or larger orifice)and to which ones the inner or outer bleed.thanks in advance

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blown 351

Posts: 68
From: Seattle, Wa. 98258
Registered: Dec 2001

posted 05-15-2002 03:09 PM     Click Here to See the Profile for blown 351   Click Here to Email blown 351     Edit/Delete Message   Reply w/Quote
You can tune the timing of the main circut wth the airbleeds, but it gets tricky, and I would be reluctant to use the bleeds to tune it this way. If you do, it will be the smaller of the airbleds which control the emusification of the fuel in the main well. Increasing their size will lean out the mixture. What do you have in their now?? 35s??
Another way to lean the part power throttle setting would be to replace the main jets with leaner ones, and then install a power valve with a higher setting. Therefore at WOT and high power settijngs drawing low vacuum, your mixture will be richer. I would try this before changing the timing of the main circut with air bleeds, because you may end up compensating for a lean off idle stumble.

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