SuzukiSavage.com - Pilot jet sizes

Yonuh Adisi FSO

Serious Thumper

Offline

Savage Jedi (Knight)

Posts: 3622
Pilot Valley NV, aka Tatooine
Gender: male

Pilot jet sizes
03/09/08 at 15:06:01

Is there a pilot jet size between the stock 52.5 and 55? After rebuilding the FireLizard's engine I had to put the stock 52.5 pilot back in because it was flooding it with the 55 and of course that gave me the usual shot gun blast back firing on decel. I just tried to put the 55 back in and it floods it out. Is there a jet between those two sizes? I have run a search but could not find an answer.

By the way, I have tried to adjust the pilot screw to no avail. Right now I am running half spacer, 152.5 main, and at the moment I have the 55 pilot in it. I am at approximately 4500 to 5000 ft ASL (Above Sea Level). Any suggestions if there is no in-between jet?

Back to top

Check out Flight of Destiny http://www.amazon.com/dp/B00H9130XC

IP Logged

Yonuh Adisi FSO Serious Thumper Offline Savage Jedi (Knight) Posts: 3622 Pilot Valley NV, aka Tatooine Gender:	Re: Pilot jet sizes Reply #1 - 03/09/08 at 19:13:35 Apparently, I have been researching this all day and I reckon there isn't an in-between pilot jet size. I wonder if I replaced the white spacer with some washers to go back to the original thickness if that might take care of it.
Back to top	Check out Flight of Destiny http://www.amazon.com/dp/B00H9130XC IP Logged

JakeB

Junior Member

Offline

I love YaBB 1G -
SP1!

Posts: 76
NE Ohio
Gender: male

Re: Pilot jet sizes
Reply #2 - 03/09/08 at 20:07:05

The idle mixture screw is meant to fine tune the idle circuit, so it is the "in between" jets. But if you absolutely think you need to, and you have a large drill index you could drill the 52.5 out just a little bit.

The white spacer affects the mixture between 1/4 and 3/4 throttle, so it doesn't have anything to do with the idle. If your running rich in that area then definately find some way to make that spacing thicker.

So basicaly, if the mixture is off in the closed to 1/4 throttle range, adjust the idle mixture screw in (leaner) or out (richer) (up a pilot jet when 3 turns out, down if 0 turns out.) If it's off in the 1/4 to 3/4 range then add (leaner) or remove (richer) thickness on the white spacer. If it's off in the 3/4 to WOT range then go up a main jet size (richer) or down a size (leaner).

JakeB

Back to top

IP Logged

LANCER Serious Thumper Alliance Member Offline Savage Beast Performance Parts Posts: 10875 Oklahoma Gender:	Re: Pilot jet sizes Reply #3 - 03/09/08 at 21:17:02 Quote: By the way, I have tried to adjust the pilot screw to no avail If you are not getting any change/response when you adjust the pilot air screw then you have some clogged passageways inside the carb. Pull it and clean it from the inside out ... every tiny hole ... then it will work properly when you turn the screw.
Back to top	IP Logged

Yonuh Adisi FSO

Serious Thumper

Offline

Savage Jedi (Knight)

Posts: 3622
Pilot Valley NV, aka Tatooine
Gender: male

Re: Pilot jet sizes
Reply #4 - 03/10/08 at 15:54:59

LANCER wrote on 03/09/08 at 21:17:02:

Quote:

By the way, I have tried to adjust the pilot screw to no avail

If you are not getting any change/response when you adjust the pilot air screw then you have some clogged passageways inside the carb.
Pull it and clean it from the inside out ... every tiny hole ... then it will work properly when you turn the screw.

This is especially directed at you Lancer since you're the carb guru around these parts.

An ol' boy came by the house while I was trying to tune the carb and said pretty much the same as you about some passages may be clogged, but here is where I need confirmation or denile. He told me that I could clean the carb by getting a couple of gallons of high octane mixed with about a cup of rubbing alcohol and run it through my tank. He said it would clean the carb very well.

Now this guy says he usually works on twin cylindered bikes. Would this actually work or would it destroy something?

Back to top

Check out Flight of Destiny http://www.amazon.com/dp/B00H9130XC

IP Logged

JakeB

Junior Member

Offline

I love YaBB 1G -
SP1!

Posts: 76
NE Ohio
Gender: male

Re: Pilot jet sizes
Reply #5 - 03/10/08 at 16:21:44

You can also buy the fuel additives that are meant to clean carbs and fuel injectors, but the way I see it is if the passage is blocked then it would take a long time for those additives to dissovle the gunk in there.

I've had jets that were so gunked up that I couldn't stick a piece of wire through them, I had to burn it out by heating the jet up with a torch, and I don't see why if it could happen to a jet, it couldn't happen to any passage in the carb.

JakeB

Back to top

IP Logged

bill67 Serious Thumper Offline old tired Posts: 8517 genoa city wisconsin Gender:	Re: Pilot jet sizes Reply #6 - 03/10/08 at 16:53:38 High octane gas is suppose have some cleaners in.
Back to top	william h krumpen IP Logged

Max_Morley

Serious Thumper

Offline

LT650 Luxury Touring
& sidecar rig

Posts: 1490
Moses Lake. WA
Gender: male

Re: Pilot jet sizes
Reply #7 - 03/10/08 at 17:07:10

All fuel has cleaners/deposit preventers/removers in it. From what I've read there isn't necessarily more in premium fuel, but they would like you t think there is. I think Sea Foam* works well and if you let it sit in the carb bowl it may -may being the operative word- loosen and dissolve the material in the air bleeds in the carb upper 1/2 that are not exposed to liquid normally. When the air bleeds are partially or wholly plugged the carb circuit doesn't operate as intended and usually richness is the result.
* Sea Foam is available at most auto parts houses and Wally world usually. It is a liquid concentrate usable in both the fuel and lubrication systems. My only experience and recommendation is for the fuel system. It is a winter fuel stabilizer also so mine gets a dose in the Fall and again in the spring and averages 50-55 MPG with me and all the hard bags and fairing hitting the wind. So far I've experienced no negative effects from it. Max

Back to top

Max at Thumper Acres. '96 Savage bagger, '03 Savage w/Cozy sidecar for wifeni.

IP Logged

LANCER

Serious Thumper
Alliance Member

Offline

Savage Beast
Performance Parts

Posts: 10875
Oklahoma
Gender: male

Re: Pilot jet sizes
Reply #8 - 03/10/08 at 20:23:46

Can't say about the mixture the guy recommended, but I do know that if you want to BE ABSOLUTELY SURE that the jets and passages are clean and free flowing NOW, there is only one way to do it and that is to remove the carb...take it apart and manually clean it.
I have had to use wire to remove the gunk from jets and passages before. Waiting for a fuel mix to dissolve it could take forever.
Taking a carb off the Savage, cleaning it and putting it back on can be done in an hour. I mean there is just not that many parts to the thing and it is down right simple, so working on it is very easy. Besides, it is a great way to learn how the carb goes together and works, which is something that is always good to know.

Just go ahead and jump in with all 3 feet, you will learn good things and have fun to boot.

Back to top

IP Logged

Yonuh Adisi FSO

Serious Thumper

Offline

Savage Jedi (Knight)

Posts: 3622
Pilot Valley NV, aka Tatooine
Gender: male

Re: Pilot jet sizes
Reply #9 - 03/10/08 at 20:28:15

LANCER wrote on 03/10/08 at 20:23:46:

Can't say about the mixture the guy recommended, but I do know that if you want to BE ABSOLUTELY SURE that the jets and passages are clean and free flowing NOW, there is only one way to do it and that is to remove the carb...take it apart and manually clean it.

That is what I will be doing once I get enough time to do it that does not interfere with the honey-do list. Which means probably next Wednesday. I was just curious if this guy knew what he was talking about or if he was full of sh*t.

Back to top

Check out Flight of Destiny http://www.amazon.com/dp/B00H9130XC

IP Logged

Yonuh Adisi FSO

Serious Thumper

Offline

Savage Jedi (Knight)

Posts: 3622
Pilot Valley NV, aka Tatooine
Gender: male

Re: Pilot jet sizes
Reply #10 - 03/17/08 at 17:06:42

Well, I have the carb completely torn apart and now just waiting for the wife to return with some carb cleaner. (gonna use some of her fine craft wire to snake the passages. Yes, she gave me permission, she wants the FireLizard running as perfect as possible as well)

Right now I got all the parts separated on my work bench and covered (dang cats that love to steal small parts and lose them) so I should return to the garage with everything still there.

Back to top

Check out Flight of Destiny http://www.amazon.com/dp/B00H9130XC

IP Logged

LANCER Serious Thumper Alliance Member Offline Savage Beast Performance Parts Posts: 10875 Oklahoma Gender:	Re: Pilot jet sizes Reply #11 - 03/17/08 at 19:03:37 *Oh boy, we're having some fun now ! ! !*
Back to top	IP Logged

Yonuh Adisi FSO

Serious Thumper

Offline

Savage Jedi (Knight)

Posts: 3622
Pilot Valley NV, aka Tatooine
Gender: male

Re: Pilot jet sizes
Reply #12 - 03/19/08 at 10:30:14

I was putting my carb back together after cleaning it (all passages clear now) and noticed that the o-ring underneath the pilot air screw is missing. I have no idea how long it has been gone because when I removed the old pilot screw all that came out with it was the spring and washer.

If I am correct, the missing o-ring may be most of my carb problem. So question is, am I correct in that the missing o-ring could be most if not all of the problem I have been having, or is it insignificant?

I will be going to the hardware store today to get some allen head bolts (finally going to replace those soft as heck phillips head screws) and was wondering if any one knew the size of that rubber o-ring.

Back to top

Check out Flight of Destiny http://www.amazon.com/dp/B00H9130XC

IP Logged

Yonuh Adisi FSO Serious Thumper Offline Savage Jedi (Knight) Posts: 3622 Pilot Valley NV, aka Tatooine Gender:	Re: Pilot jet sizes Reply #13 - 03/19/08 at 18:09:05 Okay, put in new o-ring, and bolted carb back together with allen head bolts. Bike fires up nice but I still can't tune the SOB.
Back to top	Check out Flight of Destiny http://www.amazon.com/dp/B00H9130XC IP Logged

JakeB

Junior Member

Offline

I love YaBB 1G -
SP1!

Posts: 76
NE Ohio
Gender: male

Re: Pilot jet sizes
Reply #14 - 03/19/08 at 19:36:20

Without that o-ring a little air could be sucked into the idle circuit, and could possibly affect the tuning. Make sure the o-ring you get is resistant to gas, not all o-rings are created equal.

Have you taken the idle mixture screw out and looked at the end? Maybe the end got messed up/broken off, it's not difficult to nick them up turning them in too far.

JakeB

Back to top

IP Logged