[TRPUT]

Bwahaha!! As a geek with a K&N filter fitted to a post Kat I can confirm that it does indeed effect running and performance from idle to WOT. (Actually - it kinda screws it all up!) It took a lot of geekiness and OCD to eventually get it right.

[steves]

You asked two permutations of the same question.

You have to define both what "a while" and "breaks up at high speed" means.

[canucme3]

Do you know what CV stands for? As in "the Katana stock has CV carbs." No race bike or race car I've ever heard of uses CV carbs. They use slide carbs which do not depend on vacuum at all. You twist the throttle (or push the accelerator pedal) and the slide opens, period. CV carbs or "constant velocity" depend on vacuum the ENTIRE RPM range. In which case, I'm "pretty sure" you're wrong.

All carbs work on vacuum through the entire rpm range... That is how the fuel is actually pulled through the jets and into the engine. The difference between CV carbs and fixed venturi carbs or mechanical slide carbs is that CV carbs use a vacuum operated slide to give smoother throttle control and range.
BTW only dirt bikes really use slide carbs and drag bikes use fixed venturi (no slide just throttle plate). A lot of track, race bikes that actually use carbs run CV carbs.

[arsenic]

And all you need to do is add a jet kit to make a K&N air filter work correctly right?

[Engelskmannen]

Engelskmannen.

[canucme3]

And all you need to do is add a jet kit to make a K&N air filter work correctly right?

Mock me if you want, but I do know what I'm talking about. Haven't spent all this time and effort in school for nothing. Ill be a certified bronze level Suzuki tech 4 weeks from tomorrow

[steves]

MMI grad you say

[canucme3]

MMI grad you say

Alright well I maybe new on this forum, but I do know that we have pretty much hijacked this thread. If you have something to say about me feel free to PM me.
As far as the info I gave, that comes from Suzuki and I'll leave it at that

[arsenic]

Hey duder, I AM Suzuki certified. Rebuilding carbs is what I do. But seriously, rock on with your bad self. BTW, Suzuki doesn't make those carbs, Mikuni does.

[canucme3]

Hey duder, I AM Suzuki certified. Rebuilding carbs is what I do. But seriously, rock on with your bad self.

Okay then explain to me what I wrote that was wrong?

And Mikuni makes the carbs to Suzuki spec and you should know Suzuki covers carbs in their factory training where it goes over this stuff

[arsenic]

pretty much everything here:

Yes the carbs run on pressure differences, but they work using pressure differences between the air moving through the carb and atmospheric pressure. Putting a filter on wont change that. The issue more then likely is some one put on the aftermarket air filter and didn't jet for it and you are running way lean on the top end.
As for if how long can it sit before carbs should be cleaned all depends. Did you leave them full of gas? If they were definitely take them apart and clean them if its been sitting more then a couple weeks. If they were drained its still probably in your best interest to pull them apart quick and check them, but there is no real time period put on how long they can sit.
Gas tank depends on how long its sat and care of the PO. If you fill the tank completely it will keep the tank from rusting as long as every so often you drain out the water that will settle to the bottom and top off the tank. Basically just look in the tank and if you don't see rust you should be okay. Personally I would take any tank that sat for any period of time with or with out gas in it and clean it.

And here:

All carbs work on vacuum through the entire rpm range... That is how the fuel is actually pulled through the jets and into the engine. The difference between CV carbs and fixed venturi carbs or mechanical slide carbs is that CV carbs use a vacuum operated slide to give smoother throttle control and range.
BTW only dirt bikes really use slide carbs and drag bikes use fixed venturi (no slide just throttle plate). A lot of track, race bikes that actually use carbs run CV carbs.

[canucme3]

Lol thats really helpful... You seem to know a lot what specifically is wrong with that info?

[scottynoface]

[kevin2502000]

Awwww that's cute, a new expert in town.

[arsenic]

Just thought I'd post some feedback on got on eBay a few days ago:

But again, I have no idea what I'm talking about