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| Moderated by: Greg Fletcher |
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| Dellorto 40 mounting and initial setup | Rate Topic |
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| Posted: 09-14-2009 05:24 am |
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1st Post |
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francisg Member
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I have a few questions for any or our esteemed experts concerning the mounting and initial setup of Dellorto DHLA 40. 1. Where do the rubber washer / thackerry washers go and what is the coil spacing and torque setting? 2. What is the initial air bleed position? 3. Can i mount the carb to the intake manifold on the bench before mounting the assembled unit to the engine? Carb specs. Choke 34mm Main jet 142 Emulsion tube 7772.5 Air correction idle jet 180 Idle jet 58 Idle jet holder 7850.1 Pump jet 40 Start jet 70 Thanks for the help. Francis G
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| Posted: 09-14-2009 12:57 pm |
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2nd Post |
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Judson Manning Member 
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Opinions will differ, but I'm not a fan of the flexible mounting hardware on the Dellortos due to my past experiences...Strombers are a different story. What I've done with the Dellortos is make my own gasket material to put on either side of the anti-popping intermediary plates (8 in total). With 58 idle jets your initial air bleed will be only a turn or so. I've used 57 and 55 jets on my installations and of course I've needed to add a few turns. The JHPS club store jettings are a GREAT starting point, but you will need to fine tune the jets to match the exact specs of your engine using a Dyno, CO meter, etc. to get optimum power, mileage, drivability, etc. If in doubt - run it rich. Mounting the carbs to the manifold first takes away a lot of the irritation of getting to those bottom 4 nuts. Go ahead and attach the water line, brake booster, and water temp sensor and mount the entire assembly as a complete unit to minimize the VINO factor...
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