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SB 1000 #1 Cylinder Head Core Plug Leakage- Revised 7-9-76 (3 pages)
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SB 1000 #14 Cylinder Head Bolt Torque Change 11-8-78 (1 page)
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Classic Goldwing Technical Forums
Engine & Fuel System Modifications
740 carb review also known as DFT DFTA weber
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<blockquote data-quote="joedrum" data-source="post: 137180" data-attributes="member: 98"><p>ive learned a lot about the dft carb in my work with it ... it mostly all learn in results as they came by trying things ....the dft carb was made for economy cars of a bit more cubic inch size and much lower rpm range ...jetting and the size of the different circuits in the carb and also the progression of the carbs in the linkage is all setup for this economy carb package ..weber also had to satisfy epa deals also ....</p><p></p><p>it is not a strait carb in the purest form ....things like the power valve witch is not adjustable ...need to be remove from having influence on the its operation ....the auto choke is another thing i dont have set up either as in the most open position blocks some air flow ...me personally want the highest of performance wont stand for that ...and the simple throttle lock on a bike performs warm up without airflow decrease....and is my way of doing it ....</p><p></p><p>the weber idle circuit is not only idle it is off idle too ...when it comes to the dft carb ...to me the is the biggest mismatch to the oldwing motor ....and is where i do my biggest mod to the carb to match the oldwing performance capable motor ...</p><p></p><p>the mod is an air mod to the carb ...in the idle circuit of this economy carb there is simply way too much gas provided for the somewhat small oldwing motor and it will run rich ...the mod i made quite some time ago ..i thought might just be for my modded oldwing 1200 motor...and may not apply to other oldwing stock motor ......ive come to the conclusion this is not so ....idle is idle no matter whats going with motor capabilities stock or modded like hooch ..... i will try to find pics of the mod i did for next post</p></blockquote><p></p>
[QUOTE="joedrum, post: 137180, member: 98"] ive learned a lot about the dft carb in my work with it ... it mostly all learn in results as they came by trying things ....the dft carb was made for economy cars of a bit more cubic inch size and much lower rpm range ...jetting and the size of the different circuits in the carb and also the progression of the carbs in the linkage is all setup for this economy carb package ..weber also had to satisfy epa deals also .... it is not a strait carb in the purest form ....things like the power valve witch is not adjustable ...need to be remove from having influence on the its operation ....the auto choke is another thing i dont have set up either as in the most open position blocks some air flow ...me personally want the highest of performance wont stand for that ...and the simple throttle lock on a bike performs warm up without airflow decrease....and is my way of doing it .... the weber idle circuit is not only idle it is off idle too ...when it comes to the dft carb ...to me the is the biggest mismatch to the oldwing motor ....and is where i do my biggest mod to the carb to match the oldwing performance capable motor ... the mod is an air mod to the carb ...in the idle circuit of this economy carb there is simply way too much gas provided for the somewhat small oldwing motor and it will run rich ...the mod i made quite some time ago ..i thought might just be for my modded oldwing 1200 motor...and may not apply to other oldwing stock motor ......ive come to the conclusion this is not so ....idle is idle no matter whats going with motor capabilities stock or modded like hooch ..... i will try to find pics of the mod i did for next post [/QUOTE]
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Classic Goldwing Technical Forums
Engine & Fuel System Modifications
740 carb review also known as DFT DFTA weber
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