85Gen1

Hey all,

so i ran the car at the dyno yesterday and learned what i needed too. at wide open im running way too lean about 15.2 to 16. i was only going to 4200 rpm to lear that. can you buy jets for nikki carbs or do you drill them out? help?

heres the run btw

http://www.youtube.com/watch?v=HKUT0b2WAuc

made 142.68 hp @ 4300 173 Tq @ 4100

Jibaro 12A

iTrader: (8)

http://www.mazdatrix.com/c-3.htm

85Gen1

Awesome! thanks so much

Jibaro 12A

iTrader: (8)

nice video BTW

85Gen1

thanks, i really wanted to do a full pull but it was too lean

85Gen1

How much in size should i increase those jetts? on them it says primarys are 90's and secondaries are 110.. my average AFR over those two runs was 15.6. im trying to get it evenly around 12 any thoughts?

Oneiros

So this is a blow through Nikki? Who did the boost prepping? They should have given you relatively accurate sized jets, because 110 on the secondaries is ridiculous. When I spoke to bad 83 about this ages ago he said to go to about 200 on the secondaries.

85Gen1

rotary shack did the prepp... it has the stock jets in it right now, i wasnt sure if i should leave the primarys alone due to the fact that there in the 12 to 13 range of ARF. i was gonna try 150 on the secondaries to start unless i get told otherwise.

Oneiros

Wow ok thats pretty bad that rotaryshack didnt give you at least roughly correct sized jets. I mean if you gave that a full run out to 8k rpm it would probably blow on those jets. Very bad.

Just get a 2mm drill bit and drill out the secondary fuel jets, easiest solution. Leave the primaries.

Stock secondary fuel jet sizes are 160 on most nikki's so i would be going for 200 rather than 150.