46 ci briggs build up

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freakboy

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I'd make a new inlet manifold, there's certainly room for improvement there!

Good luck, I really like boxer engines :)

Hayden

I was acctualy concidering that as long as it looks stock! i could probaly do tht easy... and i could design it so both cylinders get almost eaqual fuel so ones not all carboned up
 

sideways

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From what I've read, nearly all people that have machined a fire slot into the head on their engine have found a power loss, particularly in the top end, just my 2c...

Hayden
 

freakboy

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ok in that case i wont bother i didnt wana experiment on this engine either cause cheep replacements arent to easy to come buy around here. But tomorrow if i have the energy im gona go out and make myself some flanges for a bigger exhaust hehehe.
 

sideways

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I was acctualy concidering that as long as it looks stock! i could probaly do tht easy... and i could design it so both cylinders get almost eaqual fuel so ones not all carboned up

Do it! There's certainly room for improvement there! Especially if ones getting all gummed up, it really shouldn't be doing that though, well not that much anyway, I assumed those pictures were a before and after of cleaning! How are the valve guides (and of course, valve stems) on that cylinder?

Thanks

Hayden
 

freakboy

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no the upper cylinder was like that when i got it off and the lower was that dirty when i tok it off.
 

solomon

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oh wow, i though a fire slot improved performance. What does it do to cause less power?
 

solomon

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haha idk, i remember seeing it on a 5hp guide, and on the raptor 3 heads on ebay, they are milled with a fire slot cut....
 

newrider3

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I'm guessing " engine must be origionaly manufactured for use in lawn mowing equipment. Must be stock in appearance with the exception of irfilter air cleaner or velocity stack. engine may be internaly modified." means no aftermarket carbs guys.
 
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