NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   -   Mikuni 13b 6port (https://www.nopistons.com/performance-mods-20/mikuni-13b-6port-45916/)

Revin 03-10-2005 03:30 PM

Im new to this forum and hope someone can help. I have an 88 SE with a 13b 6port, Mikuni sidedraft, Racing beat header and presilencer, N1 mufflers, Centerforce clutch, and Accel 8.8 wires. I recently removed the EFI and installed the Mikuni 44 I was having trouble starting it so I sent it out for a complete rebuild. I got it back and it starts every time. I can get it to idle good but, the throttle response is horrible if the pedal is pushed quickly. I have the manual and found that the screws on the back of the barrels only tune the idle and everything else is jets. The car is running lean and I dont want to blow it up. Im using a holley blue fuel pump and holley regulator delivering 3 psi of fuel. Does anyone know the correct jets for the 6 port motor? The jets in it now are:

Idle jets 62.5

Accel pump 90

Main Air 240

Main fuel 190

I dont know what pump nozzles are in there or which ones should be.

I got these sizes off the computer but never had a second opinion as to what should be in there.

Any help is GREATLY appreciated


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