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 Switching orientation of Honda GC series

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Rustbucket Garage
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PostSubject: Switching orientation of Honda GC series    Switching orientation of Honda GC series  Icon_minitimeMarch 25th 2021, 8:07 am

So my granddad has this troy bilt pressure washer with a gc series on it. I was looking at it and I noticed something interesting. The carburetor appears to have studs to run it in either orientation. Adding into this the unusual orientation of the sump, I was wondering, would it be possible to convert a vertical gc to a horizontal and vice versa by rotating the carburetor as mentioned above and swapping sumps? Obviously being as this is a fully functional pressure washer I'm not going to tear it apart because it's not mine but if I find another it might be interesting to try.


Last edited by Rustbucket Garage on March 26th 2021, 1:38 pm; edited 2 times in total
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AllisKidD21
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PostSubject: Re: Switching orientation of Honda GC series    Switching orientation of Honda GC series  Icon_minitimeMarch 25th 2021, 10:42 pm

I believe that's actually why they're designed like that, so the block can be used for horizontal and vertical applications.

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PostSubject: Re: Switching orientation of Honda GC series    Switching orientation of Honda GC series  Icon_minitimeApril 1st 2021, 10:14 pm

With briggs oppys, the base block are pretty well interchangeable between horizontal and vertical, besides a few oil drain ports drilled differently so the oil will drain back into the block and not build up under the tappet covers and blow out the pcv. I wouldn't doubt the GC having something similar.
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prancstaman
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PostSubject: Re: Switching orientation of Honda GC series    Switching orientation of Honda GC series  Icon_minitimeApril 3rd 2021, 11:50 am

It would be a good idea to look over the oil system with the carburetor. I did a Tecumseh like that but it was a pressure lube engine. Where I just epoxied the sump screen and added a tube for a pick up. I would imagine that a splash lube engine, you would have to make sure the holes that lube the bearings are all on the top to dribble down into the bearings to keep the engine alive. Everything else is lubed by the oil mist from the splashing around. Could be as simple as making a oil dipper from a piece of sheet metal and redrilling a couple holes, to work. Then the proper carb orientation for the float to work right.
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PostSubject: Re: Switching orientation of Honda GC series    Switching orientation of Honda GC series  Icon_minitime

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