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Classic Goldwing Technical Forums
Engine & Fuel System Modifications
New guy, another single carb conversion.
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<blockquote data-quote="joedrum" data-source="post: 185447" data-attributes="member: 98"><p>ok the dft carb ...my bike uses the dft carb ..its not the tom carb ...32-32...but is the slightly bigger dft 32-34 carb ...they are are very close to the same ..basically air flow increase is the only difference...</p><p></p><p>there are two things i disagree with on the info tom puts out ...not saying it's wrong for car application ..just talking oldwing motor here ....</p><p></p><p>carb comes with a fuel shut off device on the idle circuit...tom says this can come off and it can ...but it seems to me when the motor is turn off the idle circuit can siphon idle circuit gas into motor down to the bowl level where idle is drawn from ....so to me the fuel shut off needs to stay on carb and wired up to work </p><p></p><p>second is there is no need to use heat on the manifold ....in fact it is best to stop the heat right at the head if possible .....</p><p></p><p>past that the dft needs mods done to it in my opinion and was necessary on my bike ....car carbs have big idle circuits cause of air conditioning and power steering and oldwing motor is small in comparison to car motors....</p><p></p><p>the dft carb also has a combined idle and off idle circuit ..this had to be separated on my carb to get to get idle circuit small enough ...</p><p></p><p>there is an epa power valve on dft carbs that's not adjustable and has to be deactivated ...</p><p></p><p>if these things are done ...past that the dft carb set up is second to nothing out there ...</p><p></p><p>my bike has instant power ..being a 2 stage progressive carb ...the carbs air flow cfm grows as rpm demands ....this also brings in the point of rpm ..on my carb the jetting passed the idle circuit is huge ..compared to stock car jets that's because the rpm capability is three times higher than car motor ..that makes for big flow even though the motor is smaller ....</p><p></p><p>so if you want to go this route ...which I'm glad i did ...you will come up with a superbike like ride that is totally reliable ..ive been on some long trips with mine ..with flawless running .....</p></blockquote><p></p>
[QUOTE="joedrum, post: 185447, member: 98"] ok the dft carb ...my bike uses the dft carb ..its not the tom carb ...32-32...but is the slightly bigger dft 32-34 carb ...they are are very close to the same ..basically air flow increase is the only difference... there are two things i disagree with on the info tom puts out ...not saying it's wrong for car application ..just talking oldwing motor here .... carb comes with a fuel shut off device on the idle circuit...tom says this can come off and it can ...but it seems to me when the motor is turn off the idle circuit can siphon idle circuit gas into motor down to the bowl level where idle is drawn from ....so to me the fuel shut off needs to stay on carb and wired up to work second is there is no need to use heat on the manifold ....in fact it is best to stop the heat right at the head if possible ..... past that the dft needs mods done to it in my opinion and was necessary on my bike ....car carbs have big idle circuits cause of air conditioning and power steering and oldwing motor is small in comparison to car motors.... the dft carb also has a combined idle and off idle circuit ..this had to be separated on my carb to get to get idle circuit small enough ... there is an epa power valve on dft carbs that's not adjustable and has to be deactivated ... if these things are done ...past that the dft carb set up is second to nothing out there ... my bike has instant power ..being a 2 stage progressive carb ...the carbs air flow cfm grows as rpm demands ....this also brings in the point of rpm ..on my carb the jetting passed the idle circuit is huge ..compared to stock car jets that's because the rpm capability is three times higher than car motor ..that makes for big flow even though the motor is smaller .... so if you want to go this route ...which I'm glad i did ...you will come up with a superbike like ride that is totally reliable ..ive been on some long trips with mine ..with flawless running ..... [/QUOTE]
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Classic Goldwing Technical Forums
Engine & Fuel System Modifications
New guy, another single carb conversion.
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