Reply to "4 x Weber 48 IDF (not IDA) conversion"

Hum, Webers flatten out at 6,000? Mine I would say would continue to pull, and pull HARD to around 7,200. They wanted to go so bad that I had to put a rev limiter on the engine.

I found 42mm chokes about right. 37mm chokes would flatten out in the low 6,000's, yes. Just like a rev limiter. The engine just wouldn't go anymore.

I also ran 44mm chokes and didn't like them. It was worse then a 3 liter BMW. It was flat across then entire rpm range with seemingly no ceiling, and that's dangerous to the engine. I couldn't feel a power peak. It was just flat.
You couldn't even tell what rpm you were at without a tach.

It is rumored that the 58mm IDA's for the Big Ford were made in serial numbered sets. I've only seen one set, and one intake manifold in mag.

I'm sure there are more but they are probably in a warehouse in England or Europe. You know like the one in Raiders of the Lost Ark. Labeled property of Ford, and part of the GT40 racing program. Probably.

They are a love hate relationship. When they are bad it's living hell, but when they are right they are nothing short of amazing. Maybe even orgasmic.

Because they change with the weather, be advised, they are a lot of work.
The promis of the Webers was that at full throttle they pulled like fuel injection.

Guess what? Now we have IR EFI that pulls like fuel injection at every rpm. Amazing. Ain't electricity great?