Toymods Car Club Inc: Tech & Conversions => 18RC & Weber 32/36 hesitiation and Backfiring.

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M.W.P.
Forums Junkie

Location:
Rocky Mountains, Canada
Registered:
May 2002

Re: 18RC & Weber 32/36 hesitiation and Backfiring.	Sun, 08 December 2002 15:02

The old carb would have had a system that stopped the second butterfly from opening until there was enough vacuum (high rpm). The hesitation happens when you open the second butterfly too early. My 18R (not RC) stock carb had a vacuum system which was inactive for a long time (meaning no second throat). I chucked the vacuum system away and replaced it with a spring, so it now opens from about 70% throttle onwards. If i go past this before about 2500RPM the engine will struggle. The cool thing is i can feel the new spring on the pedal, so i know when im going to open it. I get about 120KM/10L on the open road on ULP + valve lube. Im running ULP98 all the time now, i havnt check mileage around the city yet. Remeber this is a 4spd manual Corona... no 5th gear crusing for me Gotta love the 18R in my Corona (RT104). Top end is a little noisy (prolly timing chain), but it runs damn well for over 275,000 on the clock. I love taking it out to 120Km/hr in 3rd... thats about 5500RPM. Ill be needing a new project to keep me busy soon, so im gonna try building my own DIY ignition timing and fueling ECU along with inlet manifold, throttle body and injectors. Will be interesting. With any luck i should be able to get it to run better than on the carb, and if things go well i should get quite a bit more power out of it as well. [Updated on: Sun, 08 December 2002 15:10] [Report message to a moderator]

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