Finding Jet's

[fresh]

Hi guys,

First time poster but I've been looking around on these forums for a little over a year now. Have purchased a K&N Lunchbox filter and have a new slip on exhaust on the way but was curious what jet's I would need.

I have a 2006 GS500F, the slip on is from here http://www.ellaspede.com/shop/reverse-cone-mufflers/ if that helps. I've had a look on the wiki but didn't seem to help too much, i'm thinking 22.5/62.5/145, or should I just buy a bunch and go from there since they're relatively cheap?

Any help would be greatly appreciated.

-fresh

[EdChen]

I'm not a jetting expert, but based on the wiki that you've already checked out, that seems like a good starting point. Probably not a bad idea to grab a 20 pilot, 65 mid and a 147.5 main in addition to what your had listed. Should give you a decent selection to play with. Good luck! And when you get it dialed in, please edit the wiki with your info so others can learn from you.

[The Buddha]

Hi guys,

First time poster but I've been looking around on these forums for a little over a year now. Have purchased a K&N Lunchbox filter and have a new slip on exhaust on the way but was curious what jet's I would need.

I have a 2006 GS500F, the slip on is from here http://www.ellaspede.com/shop/reverse-cone-mufflers/ if that helps. I've had a look on the wiki but didn't seem to help too much, i'm thinking 22.5/62.5/145, or should I just buy a bunch and go from there since they're relatively cheap?

Any help would be greatly appreciated.

-fresh

20/65/147.5 is a drop in combo for it.
You can skip that 65 if you're getting em locally, most bikes work just the same with 1-2 washers under the needle.
I sell a kit without mids (but bolts and washers included for $25 shipped in US) But if you're near a cycle gear or other good dealer, get it there.
Cool.
Buddha.

[junior1786]

there is a website called jets-r-us, as far as i looked, they have the bigest selection. look them up

[fresh]

Thanks a ton guys!

Most likely be ordering jets locally if I can, otherwise just waiting for the filter to arrive from the US.

I'll post my results on the wiki when it's all done.

Cheers!
fresh

[yamahonkawazuki]

was going to say the buddha knows his jets. also have to take into account elevation

[fresh]

20/65/147.5 is a drop in combo for it.
You can skip that 65 if you're getting em locally, most bikes work just the same with 1-2 washers under the needle.
I sell a kit without mids (but bolts and washers included for $25 shipped in US) But if you're near a cycle gear or other good dealer, get it there.
Cool.
Buddha.

I tried what you suggested using the 65 mid, and I put everything back together and started her up.

Bike went straight to 5k rpm.

Backed off the idle screw and not much happening there.

Swapped the stock mids back in and it's sitting around 3k rpm atm.

Not too sure where to go from here. Any help would be greatly appreciated.

Cheers

[crackin]

Is the throttle free play set correctly?

[The Buddha]

Ok since you seem to be running in some sort of opposite world ...
Try 17.5 pilots ... They are original stock pilots.
If that is still revving high - go to 15.
Or try 55 mids.

Has the motor been modded ?

Cool.
Buddha.

[EdChen]

I'd also double check that all the vacuum lines are attached and intact, plus the choke isn't stuck.

[fresh]

I'll try the above recommendations  and report back tonight with the results.

I have a feeling I haven't set the throttle cable correctly and definitely check the vacuum lines before changing the pilots.

Thanks again for the help guys.

[damo2211]

I bought mine from ebay, upon purchase they ask for the specs of your bike, any mods you have done or are going to do in the future and they give you the jets to suit.

[fresh]

Vaccum lines, throttle cable is fine.

Awaiting 15 pilots and we'll see how that goes, local didn't stock em so getting the from a few towns over.

[Joolstacho]

Fresh, dear boy, I dunno why the penny hasn't dropped. Nothing personal mate, but over and over again we see forumers trashing airboxes to put on pods, spending silly money hassling with jetting and exhausts, - all with so many problems, and I have yet to hear of anyone who has added any meaningful HP to a GS500. (Please let me know what the formula is if you know different!)
Basically we have a motor here that is inherently limited by it's 2-valve design, it's a very strong, reliable donk, but it ain't a racer!
I can't help thinking that maybe some people who are trying to squeeze more HP out of the GS500 would be better off starting with a decent 4-valve motor.

[fresh]

Fresh, dear boy, I dunno why the penny hasn't dropped. Nothing personal mate, but over and over again we see forumers trashing airboxes to put on pods, spending silly money hassling with jetting and exhausts, - all with so many problems, and I have yet to hear of anyone who has added any meaningful HP to a GS500. (Please let me know what the formula is if you know different!)
Basically we have a motor here that is inherently limited by it's 2-valve design, it's a very strong, reliable donk, but it ain't a racer!
I can't help thinking that maybe some people who are trying to squeeze more HP out of the GS500 would be better off starting with a decent 4-valve motor.

I am by no means looking to add "meaningful" HP to my GS, I am however wanting to get it looking "just right", see pic below of current state.

- link(http://imgur.com/3e0Wo9W)

In order to do this I wanted to change the exhaust and so I thought I might as well swap out the air filter, that said I have the bike running now which is great after a couple hours of searching and reading.

The Idle screw was screwed all the way in, so I unscrewed it and tested with jets Buddha suggested and seems to work great, idling a little high(a little above 1.5k RPM) with the idle screw all the way out.

Any suggestions from here guys?

Cheers for all the help.

[The Buddha]

You may have a high float ... but you're getting signs of lean with a larger pilot.
Not a clue man, sorry.
Cool.
Buddha.

[fresh]

Alright guys good news!

Got the bike running! Mechanic said to use stock jetting because that's what he used on a similar build.

Did that, played with the idle screw and runs like a dream now, thanks for all the help guys.

[Big Rich]

Stock jetting with a K&N lunchbox and new exhaust? I'd be wary.....

At the very least you should bump the jetting up a little bit. There are many factors that go into carb tuning, but when you add more air and NOT more fuel, you can cause a lean condition (and cook the motor).

[fresh]

Booked it in for dyno tuning anyway just to make sure.

But those are the settings he used for a similar shorty and all they did was shim the needle with stock jets. I think they said something like 4HP gain?

[The Buddha]

Put an O2 sensor in the exhaust and dyno it, but you watch the O2 sensor. You want to see over .5 when throttle is open and leading the rpm. As in - the bike is revving up.
Cool.
Buddha.