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Quick Fuel QFT 750 CFM Vacuum Secondary Main Body Kit

793-6-750VQFT

made in usa

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QFT 750 CFM Vacuum Secondary Main Body Kit
$172.99
QFT 750 CFM Vacuum Secondary Main Body Kit
This product is not available, please call customer service for options, at 1-800-345-4545.
793-6-750VQFT is rated 1.0 out of 5 by 1.
Rated 1 out of 5 by from Does not work with QFT VS carburetors Title says it all. I was in the process of converting a 750 Slayer series carb to chokeless (I never use it anyway) when I was so happy to find that this main body DOES NOT WORK WITH A 4160’s METERING PLATE! Kinda stupid when you realize all Quick Fuel’s VS carburetors are 4160’s with metering plates, not blocks. Nowhere is this mentioned in the description so I’m either left with buying a new secondary metering block and new fuel manifold or going back to the old main body. In fact, the instructions included with the kit even mention reinstalling the metering plate as if this body will even accept it. This is a very frustrating thing to realize when it could have been made to work as either a 4150 or 4160 with just a little more machining. Then there’s the holes the secondary’s vacuum diaphragm bolts up to. They aren’t threaded and the screws aren’t self-tapping from the original carb so I’ve gotta source what looks like an 8-32 bottoming tap. Another hit is there was a good ding on the front corner that deformed the primary metering block mounting face enough that I had to file it flush to ensure a leak-free seal. Same goes for the casting around the vacuum port for the secondary diaphragm on the side of the body. Too rough, there was no way the little cork donut would ever possibly seal right so I filed it flat too. I was glad that this product arrived sooner than the website indicated but now, what does it matter? I can’t use it anyway without spending another $100 in parts because the design is such that it can’t even be used with a QFT carb. For that I give it this pathetic rating. I don’t know how well it works otherwise. Maybe it’s great once you work around the short-sighted design and correct any QC issues your part may or may not have when it arrives.
Date published: 2018-08-10
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