Factory Five 289FIA Build

[xb-60]

Bill,
Can you post some details of your exhausts?
ie what diameter pipes, type and size of muffler, how loud (street legal?), ground clearance ?
It's an area that I haven't looked at in detail for my car yet, so any info of yours would be helpful for my build.

Cheers!
Glen

[Bill D]

The exhaust headers are custom made shorties. Diameter is 1-3/4. Exhaust pipes are 2” diameter tubing into street style mufflers. They exit in front of the rear tires. It’s loud but not too loud.

Ground clearance is 3”

[Bill D]

More pics….

[xb-60]

Good info for me Bill. Thanks!

Cheers,
Glen

[Bill D]

I spent 20 minutes talking to Carbs Unlimited’s Weber tech about my running rich issue. After explaing what I’ve done and haven’t done, he just laughed and said that’s just how the carbs are shipped as a baseline. I have to switch out the main jets, idle jets and air correctors using (2) 737-248 Jet Packs ($100 each). Each jet pack services two carbs, hence, the need for two kits. Sigh

He said to start with replacing the air correctors from #120 that’s in there now with #190-200. Replace the main jet in the emulsion tubes (?) with a #145. Start the car allowing it to warm up. Then adjust the idle mix screws. Base line is 1-1/2 turns out. Ok I can do that.

Adjust the idle speed screws 1/2 turn in from touching the the linkage. Ok, I can do that too.

He‘s located in Arizona. I wish I had my trailer. I would just take it to him to do.

I‘m sure I’ll screw it all up, get frustrated and just cover it up.

[*13*]

It’s a process. It took me a couple years of doing & thinking about it. Make an adjustment, think bout it. Eventually you get there

[1795]

Originally Posted by Bill D

I spent 20 minutes talking to Carbs Unlimited’s Weber tech about my running rich issue. After explaing what I’ve done and haven’t done, he just laughed and said that’s just how the carbs are shipped as a baseline. I have to switch out the main jets, idle jets and air correctors using (2) 737-248 Jet Packs ($100 each). Each jet pack services two carbs, hence, the need for two kits. Sigh

He said to start with replacing the air correctors from #120 that’s in there now with #190-200. Replace the main jet in the emulsion tubes (?) with a #145. Start the car allowing it to warm up. Then adjust the idle mix screws. Base line is 1-1/2 turns out. Ok I can do that.

Adjust the idle speed screws 1/2 turn in from touching the the linkage. Ok, I can do that too.

He‘s located in Arizona. I wish I had my trailer. I would just take it to him to do.

I‘m sure I’ll screw it all up, get frustrated and just cover it up.

Bill,

The emulsion tubes are the long tubes that you unscrew out of the carbs. The main jets are at the bottom of those tubes and are just hand pressed on to the tubes. You should see a number etched into the main jets. For curiosity sake, unscrew one and let us know what number is on the main jet.

I have some smaller jets in the 150-155 range that I bought that I will never use. If the 145's turn out to be too small, I will give you a real good deal on the next size up, if you need them.

I wish that I was closer Bill.

Jim

[Bill D]

I found this picture of an emulsion tube and a diagram of a Weber carb. Ordered two jet packs today.





Let the fun begin!!