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Tech: Twin 40s jet sizes?BenzBoy
@benzboy
Club Retro Rides Member 7
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Dec 30, 2004 13:53:47 GMT
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Me and my brother are trying to get his Mk3 Escort running for its MOT. Setting up the carbs is proving a bit tricky though! Its a 1.6 CVH with twin 40 Dell'Orto carbs - does anyone have any experience in setting these things up? We've got it to run but the idle jets are too big so it's running rich. Unfortunately some people on the Ford forums don't like to share the info with others (why, I don't know  ) So, if anyone knows the right jet size we should fit, we'd be most grateful!  |
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Dec 30, 2004 14:00:14 GMT
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my 1700 411 has 40 idfs.
the main jet is 170
the air jet is 190
wouldnt have thought your application would be much different.
at least it gives you something to aim at.
hope it helps ;D
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mason
Part of things
Posts: 601
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Dec 30, 2004 14:31:09 GMT
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it all depends on your venturi size, a rough starting point is venturi sizex4 for the main jets
as for idle jets I'm not too sure
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Last Edit: Dec 30, 2004 14:32:21 GMT by mason
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GrumpyOldMan
Part of things
Addicted to unreliable cars ?!
Posts: 182
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Dec 30, 2004 15:10:41 GMT
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A very useful programme (by Dave Andrews, the K-Series wizard) can be found here !It works for both Weber DCOE and Dell'Orto DHLA. |
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Tech: Twin 40s jet sizes?BenzBoy
@benzboy
Club Retro Rides Member 7
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Dec 30, 2004 20:44:58 GMT
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Thanks a lot for your help guys . We've since found that the engine is only running on 2 cyls - the carb is the prime suspect as there's a nice fat spark but the plugs are soaked! The other two cylinders are firing because the other carb is OK.... bit of a puzzler that one! The idle jets need changing anyway, but we gotta figure out why one carb is overfuelling too much |
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