Jozay721

hi everyone, i had an extra nikki carb and stripped it of all the stuff i needed( primaries and secondaries were seized) so one of the things i kept was the secondary jets, i was wonderin if i could take of the primary jets and put in the secondary jets in place, so at the end i want to have 4 secondary jets from a stock nikki carb in place.has anyone done it? and if so will it give me any power?? or reduce power?gas mileage?thanks in advance.

cdrad51

Now why would you do something like that? your car will not run, and you would be running like 6:1 a/f mixture.

Jozay721

really, i was just asking cuz i had an extra set.

MattG

iTrader: (2)

you would run stupid rich, they are different sizes for a reason.

when the primarys are open there is a smaller volume of air going through, thus needing a smaller about of fuel into the A/F mixture, but as the sec's open up it needs more fuel to feed the hungry beast

Jozay721

ooo, cool, thanks.

cdrad51

You can always try it just to have fun

Sterling

Take the primary jets from the doner carb, and drill them out to a size just between the two.

flight_of_pain

i run 140 primaries with stock 160 secondaries on a very large port 13b. 160s in the primary would be sooooo much overkill on a 12a.

isaac

Jozay721

sounds good,but my primary jets on the other carb were so crappy, i just took the secondary jets, thanks anyways sterling . i had no idea that the secondary jets would be so bad on the primaries for a 12a

cdrad51

They are. I mean you would be going from what 92 to 160 - big difference.

The most I was able to go with my sp 12A and other goodies, on a sterling carb was 150 on the primaries and 170 or 175 on the secondaries. The car ran good even though Sterling was not very pleased with my choice of jet sizes . Any bigger than that and the car would bog from being too rich, especially at high rpms.

Eventually I went down a few sizes to lean it out a little bit.

Jozay721

ooo, interesting, where do u get this sterling carb from??

cdrad51

Your cue Dennis

Mazda12AGS

I dunno maybe Sterling, just a thought. HAHA just kidding, but seriously him.

Jozay721

oo, ok yeah im a duh, duh. lol so ill ask sterling then thanks guys.