I fabricated this so I can run the 44mmWeber instead of the 48mm.

 

Thats sweet

 

Looks Good!

 

Thanks. I came up with this because my Weber is a little small for the port job I did . All the after market intake manifolds are made so that they only draw through one venturi for each rotor so you only get half of the CFMs available. This manifold all the CFMs go to each rotor.

 

very nice .

 

very nice

 

That's pretty cool.

Are you locked in to using the IDF and unable to go with an IDA?

The IDF does have a diaphragm accelerator pump and built in port for vacuum advance.

 

Are you not concerned with turbulence and fuel pooling inside the manifold?

 

I have a portion welded in between the center port that should keep the front and rear rotors from stealing from the other. The Weber is a little on the small side and the after market manifolds all draw from only one venturi so that is only half of the Webers total CFMs and this should draw all available CFMs to each rotor. So the smaller Weber should work ok. I have the area of the plenum small and the carburetors venturis are lined up to fit in line with the centers between the front intake ports and rear ports. I can also cut the sheetmetal and refit so it will move the carb 3/4 of and inch closer. If I can't get it to work I have an aftermarket manifold and can pick up a 48IDF and go with that. It's more fun to see what I can come up with on my own. I am 65 years old and have been in racing since I was 13. I have built sprint cars , dirt stockcars, worked with Winston West Nascar SCCA Can Am type cars.

 

I have the car running and it halls the mail. I took it out on the street ran it up to 5500 RPM in first then shifted to second and floored it and the car jumps sideways. It's pretty cool to have a car that can brake the tires lose when it is already going around 45. The manifold rocks.

 

Glad it worked for you. Mine can also break them loose in gear on dry road when you open the secondaries in 1st and 2nd (it's got a modded Nikki). Haven't tried it in 3rd yet. Kinda intimidated at this point. These cars sure are fun.

 

if you have one 4 sale idf 13b 6 port intake i need one 760 351 6636

 

I took the car to Thunderhill raceway in Willows California. Had to rejet the car because I live up in Twain Harte at 4500 feet above sea level and the race track is at 135 feet above sea level. Once I got it jetted man it ran like a banshee. Got up to 131 mph going into turn one and when I jumped on it was ready to go.

 

I'm glad to hear this set up is working well for you. I have the same carb but on a Rotary Engineering manifold....I just want mine to run lol.