Weber IDF Main jet help Options

[tornik550]

I am in the process of tuning my car after a rebuild. I have dual weber 40's. My engine is a 2.27L. Everything is going pretty well. I am slowly getting the jetting closer and closer. I was driving around at about 60mph yesterday. The head were hotter than I like (325 degrees). I checked the spark plugs and they were bone white. The main jets were at 160. I increased them to 170 (above 160 I only have increments of 10). With the increase to 170, the car is running very well and the temp at around 60mph cruising is around 275. I sped home, tuned off the car and took out the plugs- bone white. I was quite surprised.

The main jet size sounds high too me. Does it sound high to everyone else? Is it possible that I am needing a high main jet size because of the float level? I have my floats set at 10.5 with the gasket.

Any opinions would be greatly appreciated

[tornik550]

I think that I need clarification of the stock float height. I have seen people say that the float should be set at 11mm from the top of the gasket. I also saw in in my haynes weber manual that you should set the floats at 10mm NOT including the gasket. I was told by someone at aircooled.net that I was to set the floats at 10.5mm (gasket or not?). I have it set at 10 mm off the top of the gasket which would be 11 mm off the metal. What is the correct float height. It seems that I should be around the correct area.

The nice thing is that I have a large amount of main jets. I have everything from about 130 to 160 in increments of 5. Above that I have increments of 10. I have AC jets of 190, 200, 210 and 200.

Also, to clarify, last night when I was driving, I had the sluggish feeling when was driving above 2000 or so rpms. Below that everything was fine.