Suzuki pics thread!

176120 Views 684 Replies 264 Participants Last post by RacingJake, 3 mo ago

rexmitchell

Discussion Starter · Oct 22, 2008

I know we have a snapshot thread and a couple other picture threads but seeing as I own and love suzuki's I want us to have our own pic thread within the zuki thread. SO here we go, lets see it guys(and gals)!
Heres my 2000 GSXR 600 SRAD!

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· #654 · Nov 15, 2021

I bet it would run a darn sight better yet if you put velocity stacks on those CV carburetors @cordogg81

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· #657 · Nov 15, 2021

Pods directly on a bank of CV carbs ... and it doesn't stumble on acceleration or deceleration and doesn't have flat spots in your power delivery? <- That would indeed be a miracle.

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· #659 · Nov 15, 2021

OldVet66 said:
It can be done. I am more familiar with the VM carburetors on my bike. Lots of people over on gsresources have done it with CV carburetors. I am running a stage 3 jet kit with K&N pods and Delkevic 4-1 exhaust.

Sorry but No, it can't be done well, it is not the same problem with VM carbs, VM is not a Constant Velocity vacuum operated carburetor. You have one slide in your VM carburetor that directly opens the throttle, a CV carburetor has a butterfly valve that you manually open plus a round slide that is lifted by the engines intake vacuum. All those people are doing is making a ton more intake noise and consuming more fuel then needed, put those engines on a dyno and you will see the performance issues.

Pods directly on a bank of CV carbs does Not function as well as a bank of CV carbs that are connected to velocity stack shaped inlets. Look at the shape of the parts that were removed.

... you can put an oiled foam filter over a bank of velocity stacks. That can be made to work and That is what you will see on race bikes that run CV carbs.

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· #661 · Nov 15, 2021

What is being called a VM series is just a plain old fashion venturi single stage slide carburetor with a float bowl to control fuel delivery and if you bought a 2021 2-stroke race bike today, that is what will be on it, there is no modern carburetor equivalent. only various models by various manufacturers.

Automotive tire Motor vehicle Automotive design Automotive fuel system Alloy wheel

CV refers to Constant Velocity carburetors and there is a huge difference except for the fact that carburetors operate better if they can draw from a large volume of reasonably still clean air and can breathe through a velocity stack which is just like a funnel, a funnel that makes the air flow in a linear direction, not turbulence. Turbulence is exactly why a velocity stack exists, turbulence at the intake creates inefficiencies. Anybody that doubts it only needs to look at the shape of the rubber horn they took off to stick the cheap pod filters on.

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· #663 · Nov 15, 2021

OldVet66 said:
I am not arguing Velocity stacks, they are more efficient. CV carburetors have an inherent lag and are more suited for general riding. You can sharpen them up with velocity stacks but you can never take the diaphragm lag out of them. Racing is another thing altogether. Flat slides would probably be a better choice if you are made of money and want to run a naturally asperated carburetor.

CV carbs are the epitome of carburetor design complexity that was always driven by the increasing need to reduce fuel consumption on the end product. The reason they are disappearing is because fuel injection is superior at everything, and now manufacturers are even starting to make that vacuum controlled.

I'd be just as happy with a round slide on my race bike, makes little odds, I know I could make it work with either one, the Reed Valves are more important on a 2-stroke.

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· #664 · Nov 15, 2021

In keeping with the thread subject, a Suzuki Velocity Stack:

Wood Bicycle part Bumper Electric blue Auto part

If you believe you can remove that part and still make it work right you are wrong.

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· #667 · Nov 16, 2021

hogcowboy said:
Only when relatively new. At least that's been my experience with rubber parts like that.

You totally misread the intent of what I wrote there. People are removing that part to put a cheap pod filter directly onto the throat of the carburetor, and there is still nothing wrong with that 40 year old rubber velocity stack I posted a photo of, it's going back on a Suzuki and will likely out live me.

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· #669 · Nov 16, 2021

It's called a Venturi carburetor for a reason, but if you discard the cone shape on the left side of the red arrow, you got nothin left of the venturi effect, you have intake turbulence where you don't want it. Why would one fix that by dumping more fuel into the engine.

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· #671 · Nov 17, 2021

Half Speed,
that's as ridiculous as, "can not catch the ideal sonic wave" why are you still trying to explain away the velocity stack intake shape that was so obviously removed? A velocity stack is a funnel, do you know what a funnel does? The hacks removed all the air funnels from the carburetors and now the engine runs like garbage same as it would with open throat carburetors, so next they try opening the holes where the raw fuel enters in an attempt to compensate for what they Think must be too much air getting into the carburetor. <- That ain't how it works.
A carburetor is a fuel atomizer and you just made your fuel atomizer work poorly, if the air intake stack was not needed Suzuki could save a lot of money leaving it off and I bet the bike did work good at one time with the original parts in place.

... I can only image what they did for crankcase ventilation when they discarded the air box. Probably stuck a tiny pod filter on that too, which will quickly plug from the inside.

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