1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

need more power out of this Weber 48IDA

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Old May 2, 2010 | 10:26 PM
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Rotarx7's Avatar
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need more power out of this Weber 48IDA

first thing first... I love this carb! way better than that stock injection. the only thing is i dont exactly know how to tune them. what size jets to use, blah blah. you can call me a carburetor NOOB
well as of know im running an stock SE motor and i know that its not tuned right. my low end SUCKKSS! ive driven a 12a that felt faster than my car. Today I took the carb apart together to clean it and change the gaskets.
this is what is in it: 180 air corrector,F8 emulsion tube, 190 main jet, and for the air, 120 jet holder with 70f10. 37mm chokes i think

what do you recommend i change? bigger main jet and f11 emulsion tube?
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Old May 2, 2010 | 10:54 PM
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I got a blowthrew setup that im selling =) boost prep carb too. KUz i dont need it anymore hahah
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Old May 3, 2010 | 12:49 PM
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I'd also have to say boost. I just helped percent do a blow through on his 45DCOE and it really is shocking how much it woke the car up at low revs.
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Old May 3, 2010 | 02:07 PM
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From: https://www2.mazda.com/en/100th/
37mm chokes seem small... and exhaust is important too.
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Old May 3, 2010 | 02:09 PM
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I drove Percents car before I moved and god damn it pulls hard. The F8 e0tube is going to be too rich for a stock port 13b. try the F-11's again. check your float level. All the tuning of these carbs starts there. if your float is off nothing anyone tells you is going to matter.
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Old May 3, 2010 | 02:27 PM
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thanks! i have the full RB exhaust on my car right now. should i get bigger chokes. trying to get some f11s at the moment
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