Weber guys - Need some Main Circuit bits..

[Fullchat289]

F16 e-tubes
160 Mains
225 Airs

Looking to fatten up a bit. Let me know what you have..

Thanks,

- Allen.

[Earl J]

Hi Allen, I have the F16 e tubes, 225 airs and the 160 main jets as spares. Do want to buy them or borrow them for tuning? Send me a PM with your contact info and your intentions. Thank you.
~Earl J

[Earl J]

Duplicate post

[Fullchat289]

PM sent!

- Allen.

[priobe]

I think I have a duplicate set of 160 mains if needed that I can sell if you dont find what you are looking for

[Gaz64]

Originally Posted by Fullchat289

F16 e-tubes
160 Mains
225 Airs

Looking to fatten up a bit. Let me know what you have..

Thanks,

- Allen.

Allen,

Just interested in what jetting you have now, and where you need to fatten it up.

[Fullchat289]

Hi, Gary.

Had the car to the strip in July of this year and the car pulled nicely through gears 1-3 but when I shifted into 4th, the car noticably fell flat. Pulled the plugs a bit later in the season after a hardish run and instead of a nice milk chocolate brown, I saw more of a chalky hue. Just thinking that it's fuel related..

Main Circuit is as follows and these are 44 IDF's on a 347 with Dart Pro1 heads..:

Chokes are standard 37mm
Mains 135
etubes F11
Airs 175

initial timing is set at 12 deg BTDC

- Allen.

[Gaz64]

Allen,

Sounds more like the carbs are running out of fuel.

The 44 IDF comes with a 36mm choke, F11, 135 main, 175 air from factory, you say yours has 37mm choke?

Do you have a fuel pressure gauge at the carbs?

What size needle and seats?

What fuel pump?

What size fuel lines?

I ran 44s on my Blue car in my avatar, 308 cid, 38 choke, F2 e-tube, 150 main, 180 air, 2.00 needle and seat.

[Fullchat289]

Hi, Gary.

You are correct....36 venturies.. I was going by memory

I'm running a tick over 3lbs of fuel pressure which was dialed back (sometime after the run at the strip) from a bit over 5psi upon recommendation.

My fuel pump is a Mechanical Edelbrock Performer 289-351:

Edelbrock 1725 Edelbrock Performer RPM Fuel Pumps

and needle/seats are as per stock, so 1.75.

Hose from fuel pump is a -6 AN hose, so 3/8" ID.

- Allen.

[Gaz64]

Allen,

If your car pulls well up to 3rd gear then falls over, I'd say look at going up to 2.00mm in the needle and seat.

You should run a wideband O2 sensor to determine A/F ratio at full power, your problem could be the bowls are running out of fuel.

[Fullchat289]

Thanks for that, Gary! Seems like a change that would be easy enough to try before getting into the main circuit. Guess I'll make sure the floats are set correctly while I'm in there, too.

- Allen.