How do you set correct idle speed on the carburetor?

[greg g]

Check Pete A's site (Blueskies) and get a gander of his Ovaltin adapter can. It is on his site under the engine section.

[james curl]

On a lot of newer cars with two barrel progressive carburetors the idle opening is adjusted using a number sized drill bit to set the throttle plates at idle. This is done on the bench before installation. The drill bit is placed into the throat of the carburetor and the throttle plate adjustment screw is adjusted to just allow the drill bit to pass between the bore and the plate at idle. Something along this line should work for the initial setting.

[Don Coatney]

On a lot of newer cars with two barrel progressive carburetors the idle opening is adjusted using a number sized drill bit to set the throttle plates at idle. This is done on the bench before installation. The drill bit is placed into the throat of the carburetor and the throttle plate adjustment screw is adjusted to just allow the drill bit to pass between the bore and the plate at idle. Something along this line should work for the initial setting.

James;

Good idea. I will try that

[Young Ed]

Interesting thats how you set the carb on my 10th scale RC cars. They give you a thin wire and you close it to that size.

[james curl]

All Toyota 20R carburetored engines set their progressive two barrel carburetors that way. I owned a 75 Celica and drove it 330,000 miles before sending it to a new owner who cares for it as much as I did. He now has a much modified 20R engine in it which I helped him install, one of the three spare engines I had that needed rebuilding.