K&N/Ramair Filter swap, jet change?

[Kasweld]

Hi again, just a quick one

want to change the filters on my Gsx750f to a set of single filters and do away with the air box, can any one tell me do I need to change the jets and if so how do I know what to

thamks 

[Gixer1460]

Don't use individual filters with CV carbs - they just don't work well! Pods better and you'll need to play with jets and needles / positions - more air = more fuel!

[Kasweld]

3 minutes ago, Gixer1460 said:

Don't use individual filters with CV carbs - they just don't work well! Pods better and you'll need to play with jets and needles / positions - more air = more fuel!

How do you mean pods 

[boilerdude]

Pods are individuals. He's tongue tied. He means duals...

http://www.Eblag.com/itm/2-x-RAMAIR-Carb-Air-Filters-Twin-Velocity-Stack-Weber-DCOE-Dellorto-DHLA-CS-901-/352093780810?epid=656779917&hash=item51fa6cbb4a:g:FF0AAOSwA4dWMMEG&vxp=mtr

those.. cs 901

[Gixer1460]

3 hours ago, boilerdude said:

Pods are individuals. He's tongue tied. He means duals...

http://www.Eblag.com/itm/2-x-RAMAIR-Carb-Air-Filters-Twin-Velocity-Stack-Weber-DCOE-Dellorto-DHLA-CS-901-/352093780810?epid=656779917&hash=item51fa6cbb4a:g:FF0AAOSwA4dWMMEG&vxp=mtr

those.. cs 901

You may call individuals filters 'pods' but in 'Gods Own Country', and the home of streetfightered modified bikes but Duals are called Pods!

[boilerdude]

O I C. Ive always heard of the shiny little individuals as pods. And duals are just duals. 

Also thats cute. You mean god like as in allah right?

 

Edited July 17, 2017 by boilerdude

[Kasweld]

Now now men, chill, I know they are called different things

many thanks for all your help

[boilerdude]

right anyway the cs-901 is the suzuki standard I believe. But these do also work. http://www.Eblag.com/itm/RAMAIR-PERFORMANCE-AIR-FILTERS-MS-017-YAMAHA-YZF750-FCR41-FITMENT-NEW-/350638602477 

I went with those for a tighter stretch fit around the stacks. But the larger outer dimensions mean they look funny stuffed into the frame and my knees are slowly rubbing through them. So I deduced the previosly posted 901 probably fits and stays on there just fine and are a slimmer profile for fitting into the bike. 

[boilerdude]

I havent really googled it to check how people use the word in a sentence. Thats just what I thought I knew. I reckon he's probably right and I stand corrected. But I still dont know what a teapot is though. I drink my tea brewed in a giant tank somewhere in atlanta georgia from the coca cola company. Probably loaded with dodgy preservatives and tap water. Like a civilized human being.

[Kasweld]

47 minutes ago, boilerdude said:

right anyway the cs-901 is the suzuki standard I believe. But these do also work. http://www.Eblag.com/itm/RAMAIR-PERFORMANCE-AIR-FILTERS-MS-017-YAMAHA-YZF750-FCR41-FITMENT-NEW-/350638602477 

I went with those for a tighter stretch fit around the stacks. But the larger outer dimensions mean they look funny stuffed into the frame and my knees are slowly rubbing through them. So I deduced the previosly posted 901 probably fits and stays on there just fine and are a slimmer profile for fitting into the bike. 

So would these still need the jets changing in your opinion 

[boilerdude]

I actually dont know. It's the way Ive had my bst38s from the get go. havent tried k&ns back to back on the same carbs yet.

But I believe my 38s with bandit rubber stacks and ramair seems to respond better than I could ever get it to with stock b12 carbs with k&ns and dyno jet kit.

Edited July 18, 2017 by boilerdude

[Kasweld]

Ok thanks, think I'll get em put on and try it

[banoffee]

From the first post it reads like you are removing the air box and fitting individual/dual filters. That right? If so yes, you will need bigger main jets at the very least.

[Kasweld]

6 minutes ago, banoffee said:

From the first post it reads like you are removing the air box and fitting individual/dual filters. That right? If so yes, you will need bigger main jets at the very least.

Yeah that's what I'm up to

[boilerdude]

right. my bad. Yes if you are removing the airbox you will want the apropriate stage 3 (or stage 2 depending on which brand and what they call their open filter kit...).

Between running the ramair with stacks setup or k&ns is little difference. You're still going to want to start with either a kit or if you're going from scratch route then yes what he said ^^^ you will indeed need bigger mains at the least.

[Kasweld]

35 minutes ago, boilerdude said:

right. my bad. Yes if you are removing the airbox you will want the apropriate stage 3 (or stage 2 depending on which brand and what they call their open filter kit...).

Between running the ramair with stacks setup or k&ns is little difference. You're still going to want to start with either a kit or if you're going from scratch route then yes what he said ^^^ you will indeed need bigger mains at the least.

So if I said I'm putting the twin ramair ones on what would you suggest to start with set up after that 

thanks 

[boilerdude]

First thing you're gonna wanna do is replace the motor and carbs with bandit 1200 units. Then start with main jet around 145 or 150.

Edited July 18, 2017 by boilerdude

[Kasweld]

Are my 750 carbs the same as the bandit 1200 ones??? Does the 1200 bandit have bigger jets???

[Blue]

Gsx750f has 105 mains

[Kasweld]

9 minutes ago, Blue said:

Gsx750f has 105 mains

Do you know what the 1200 bandit has? Just thinking I could possibly get a set of them jets to try

[Foz]

A bandit with an airbox is 100 or 102.5 main jet , remove the airbox and your going to be playing with various main jet sizes until you get it right but a good starting point would be say 145-150

[banoffee]

Personally I've found looking at what mains are in jet kits for the bike/mods and starting around there. You can then save a lot of time by then getting it on a dyno to get advice on how to tweak it to get it right.

Different bike (but still a 750) and different carbs completely (flatslides) however approx 30% bigger on mains was where I started for mine with individual k&ns and a loud full system.