Carb Slides

itsid

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what's a carb slide?
is that next to a spark plug seesaw?

'sid

PS to answer the question if a slide carb is gaining you performance we need WAY more information about your setup I'm afraid
 

jacksonh

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what's a carb slide?
is that next to a spark plug seesaw?

'sid

PS to answer the question if a slide carb is gaining you performance we need WAY more information about your setup I'm afraid
I don’t have a setup, I know next to nothing about karting. Don’t know why you are being critical when I’m asking a question
 

itsid

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Well if you don't have an engine and no fuel delivery system (a current setup) to compare a slide carb's performance to,
what are you expecting as an answer?

At this time with the given information (null) the ONLY correct answer would be:
"They might"

which as you will surely agree.. is perfectly pointless,
not even telling if they affect the performance in a good or a bad way..or at all.

Don’t know why you are being critical when I’m asking a question
You have given us ZERO information that would allow us to answer the question,
me asking for more information is not criticising,
it's just asking for information.

'sid

PS and a carb slide is just a funny idea on an engine playground ;)
 

Karts of Kaos

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I think that what he is asking is," is a slide carb more or less efficient than your average butterfly valve carb if they came with the same diameter and ratings and stuff like that."
and I don't know because I only have slide carbs on like two things and one is a two stroke and the other is a motorcycle. but it would be an interesting experiment to try.
 

Snaker

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Carb slides do come in different cutout shapes.
But that is getting way deep and as Sid mentioned, no info to go on.
I don't think you will find any sort of documentation giving step-by-step how to's and/or charts on your specific setup.
If your serious on experimenting, buy some slides and compare.
 

itsid

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I think that what he is asking is," is a slide carb more or less efficient than your average butterfly valve carb if they came with the same diameter and ratings and stuff like that."
And even THAT cannot be answered as presented

A perfectly dialed in good quality butterfly carb CANNOT be beaten with a same throughput slide carb that's dialed in exactly as well.

A true keihin or a Tillotson butterfly carb outperforms any chinese clone of a mikuni slide carb if you only spend minor time on tweaking them.
(assuming both are nominally same bore)
Sooo without knowing what exactly is to be replaced with what... that question cannot be fully answered.

replacing the crappy carb on a clone industrial with a higher quality carb
gives you more room for adjustability and thus enables you to gain some performance.
if you want noteworthy amounts you need more fuel and the potential to make use of it.
(i.e. higher troughput and ultimately a bigger bore carb)
Again.. not important if butterfly or slide if you do it right, there will be no downside either way

BUT [ and the reason for me not answering the question in the first place]
if you have say a true Honda GX270 with it's true keihin butterfly
you'd be a moron if you replace that with a shingshong slide carb
you might want a true 'next size up' mikuni if you so desire or just the keihin from a GX390 later on instead ;
)
If you have a predator with it's castrated chinese version of a keihin clone
you'll be missing out if you would not at least replace that with a fully adjustable carb
once you modded the engine a bit more than the usual governor removal.
(until then it'll be fine as it is a bigger jet maybe and it's all you'd need to be happy)

There is simply no way to fullfill that request without more information.

'sid
 
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