Honda-SOHC
SOHC.co.uk Forums => CB750 => Topic started by: Oddjob on February 18, 2025, 03:30:10 AM
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Saw this on the USA forum and thought it might be of interest to the UK members. Very well made, good feedback from buyers and means you can ditch the remote oil tank if that’s the look you’re going for.
Called Sump Thing and is based in Holland, a web search should lead you to the website if you’re interested. https://sumpthing.net/
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Nice idea for that special builds!
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Looks well made, and the cost was less than I thought it would be. I assume they are using standard Honda gaskets top and bottom for the lower engine cover. Curious as to whether or not that would have to be removed to get the motor in and out of the frame. I am assuming it would.
Definitely one for those builds where you want fresh air uinder the seat.
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There's a video of it being installed on the site IIRC. It looks simple to install and yes I'd imagine you'd need to remove it before dismounting the engine from the frame but TBH I would always remove the sump anyway to gain more space. It can be fitted with the engine in situ as well, clearly much easier if the bikes on a bench.
It doesn't interest me much as I'm not a 750 owner, or even an enthusiast of the 750, but many are and I thought it might just be the ticket for those special builds. The downside to fitting it is the fact you need to fill the oil through a tappet cover, not as bad as it sounds but not the best solution. There is a sight window to check oil level though so that's a good thing.
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Looking at the videos, the exhaust front pipes will need extending to make it fit in some cases?
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Doubt it Ted, the 750 uses 4 into 4 as a rule, they tend to travel to either side of the sump not directly over it. Aftermarket systems may be a problem though. I'm sure he mentions that somewhere.
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F1/F2 pipes wouldn't fit, as the collector for the 4-1 sits right under the motor. Would need to pick a pipe with care, as most aftermarket 4-1 systems are going to have that issue. The pipes have to run either side of thte oil filter housing, then meet up underneath.
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That's why I said As a rule, far more K 750s than F 750s.