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Classic Goldwing Technical Forums
Engine & Fuel System Modifications
Single Carb Conversion: Adapt the stock plenum
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<blockquote data-quote="CC" data-source="post: 97422" data-attributes="member: 3214"><p>I tend to agree with who was concerned about the volume of air in that large plenum. (Although it would be a very different story if a supercharger was being considered). Rather than destroy my original carb-rack, Im using a stainless steel 2-1/4" BOV (turbo blow-off-valve) that I got for $16-delivered from evilbay. Yes it's a turbo valve, but the flange mount is perfectly sized for the 34-pict carb that I purchased! I made sure to order a BOV with a flange-tube diameter that is "larger" than the roughly 1-5/8" carburetor port to help ensure there's room for decent fuel atomizing. Im also installing a 3/8" aluminum carb-spacer to help improve fuel atomizing further while slightly raising my engines low end torque yet again. I will also be inserting a small fuel nipple at the lowest point of the plenum-(BOV), with a hose that will go to another 90-degree nipple which I will install somewhere on the surface of the fuel gauge sending unit; this will act as a fuel return to ensure there's no fuel build-up inside the plenum given it's limited space. The negative pressure inside the fuel tank should keep the plenum free from any fuel build-up; while the vented gas-cap simply compensates by working more/and or less, according to outdoor/engine temperatures. And don't worry, Im sure "Not" going to put a drill to a fuel tank!!! After buying some J&B weld which "WILL" permanently bond to the PVC runner's "and" the stainless BOV, without having to ever play- "patch-up games" with blue-RTV. I will have have spent under $50 for my intake; and that includes a can of high-temp aluminum paint. And yes I'll post some pics as this happens within the next 7 to 10 days. CC</p><p>(it's going slowly; but the white-vinegar is eating away at my fuel tank's surface rust)</p></blockquote><p></p>
[QUOTE="CC, post: 97422, member: 3214"] I tend to agree with who was concerned about the volume of air in that large plenum. (Although it would be a very different story if a supercharger was being considered). Rather than destroy my original carb-rack, Im using a stainless steel 2-1/4" BOV (turbo blow-off-valve) that I got for $16-delivered from evilbay. Yes it's a turbo valve, but the flange mount is perfectly sized for the 34-pict carb that I purchased! I made sure to order a BOV with a flange-tube diameter that is "larger" than the roughly 1-5/8" carburetor port to help ensure there's room for decent fuel atomizing. Im also installing a 3/8" aluminum carb-spacer to help improve fuel atomizing further while slightly raising my engines low end torque yet again. I will also be inserting a small fuel nipple at the lowest point of the plenum-(BOV), with a hose that will go to another 90-degree nipple which I will install somewhere on the surface of the fuel gauge sending unit; this will act as a fuel return to ensure there's no fuel build-up inside the plenum given it's limited space. The negative pressure inside the fuel tank should keep the plenum free from any fuel build-up; while the vented gas-cap simply compensates by working more/and or less, according to outdoor/engine temperatures. And don't worry, Im sure "Not" going to put a drill to a fuel tank!!! After buying some J&B weld which "WILL" permanently bond to the PVC runner's "and" the stainless BOV, without having to ever play- "patch-up games" with blue-RTV. I will have have spent under $50 for my intake; and that includes a can of high-temp aluminum paint. And yes I'll post some pics as this happens within the next 7 to 10 days. CC (it's going slowly; but the white-vinegar is eating away at my fuel tank's surface rust) [/QUOTE]
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Classic Goldwing Technical Forums
Engine & Fuel System Modifications
Single Carb Conversion: Adapt the stock plenum
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