Weber 44 idf flat spot |
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Weber 44 idf flat spot |
tornik550 |
Jul 4 2013, 11:59 AM
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#1
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Senior Member Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None |
So I recently purchased new weber 44 idf's. They didn't work out well so I went back to an old set of weber 44 idf's that I had. I thoroughly cleaned the carbs, sprayed carb cleaner through all jets, tubes, etc. I have also balanced the linkage. Set the floats, etc.
The car starts well. Idle's well. When I drive the car I get a major flat spot between 1500 and 3000 rpm's. Below and above the car accelerates normally. What changes should I make? My current setup for my 2258 (dual webers, big cam) -idle 55 -main 160 -et F11 -ac 200 -vents 36 Are there other issues that can cause this type of problem (timing,etc?) |
tornik550 |
Jul 14 2013, 07:46 PM
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#2
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Senior Member Group: Members Posts: 1,248 Joined: 29-January 07 From: Ohio Member No.: 7,486 Region Association: None |
Chris-
I followed your instructions on tuning my carbs. The car is running great. CHT was max around 300- both banks. My oil temps got up to 220 with heavy driving. I do have a AEM wideband. I am getting air fuel numbers in the ranges you mentioned in your post. Since I only have 1 wideband for all cylinders and I do not have egt gauges on each header- I used an IR thermometer at the 1st curve of the headers (triad headers- sorry Chris). I adjusted the mixtures until I got almost equal temps on each header and still was within the normal ranges on the wideband. To me- the temps seemed a bit high. After the car was idling for about 15 minutes- the IR thermo was reading about 575 at the curve. Does that seem right? I am probably looking too much into things since everything else seems fine. Thank you for your help! |
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