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Main Area => GS500 FAQS => Topic started by: conradvr on October 01, 2003, 10:00:37 PM

Title: Indicative Re-jetting matrix
Post by: conradvr on October 01, 2003, 10:00:37 PM
Ok, I have spent hours now ready all the posts about jetting the carbs.  I thought that it would be great to have a rejetting matrix to assist others in determining a starting point/indicative guide.  Please those that have experience and the 'know' correct and add (also please add new combinations).

Air Filter: (s) - Stock Air Box,  (p)  - Pod replacement for Stock Air Box

Exhaust: Perf - aftermarket performance pipe

Kit: Fac1 - Factory Pro Stage 1, Dyn1 - Dyno tune Stage 1, K&N1 - K&N Stage 1, Fac3 - Factory Pro Stage 3, Dyn3 - Dyno tune Stage 3, K&N3 - K&N Stage 3


Exhaust.....|.Air Filter.....|.Pilot.....|.Main.........|.#4Washers..|.Turns
................|..................|............|.................|..or Kit.........|.........
Stock........|Stock..........|40.........|125...........|1.................|3
Stock........|UniF(s)........|40.........|125...........|1.................|3    
Stock........|K&N(s)........|40.........|127.5........|2.................|3    
Stock........|UniF(p)........|40.........|................|...................|      
Stock........|K&N(p)........|40.........|................|...................|
Perf..........|Stock..........|40.........|.................|...................|
Perf..........|UniF(s)........|40.........|.................|...................|
Perf..........|K&N(s)........|40.........|.................|...................|
Perf..........|UniF(p)........|40.........|.................|...................|
Perf..........|K&N(p)........|40.........|140 - 150...|2..................|3 - 3.5    
Perf..........|K&N(p)........|40.........|140 - 150...|K&N3............|3 - 3.5  



Cheers
Conrad
Title: Indicative Re-jetting matrix
Post by: conradvr on October 01, 2003, 10:04:08 PM
Damn it  - all the formatting got lost when I posted this message (removed the white spaces).  Please let me tidy up the table before you posts replies.

Thanks
Conrad
Title: Indicative Re-jetting matrix
Post by: jiggersplat on October 01, 2003, 10:07:16 PM
this is great!  i was looking for something like this earlier today, since i know nothing about carbs.  thanks!
Title: Indicative Re-jetting matrix
Post by: conradvr on October 01, 2003, 10:24:00 PM
ok - reformatted using lotsa dots  - please those gurus out there add and edit to your hearts content.

Cheers
Conrad
Title: Indicative Re-jetting matrix
Post by: JohNLA on October 02, 2003, 12:03:10 AM
Someone should archive and post that.
We all know, I am to lazy.( I last updated my page some time, last year :oops: )
Any energy, Pablo, Kerry, Jeff, anybody?
Title: Indicative Re-jetting matrix
Post by: miket on October 02, 2003, 01:40:55 AM
That's an excellent idea. Perhaps one more column with # of people that have each combination would be useful.
Additionally, there should be a separate table for >=01.

If you want, I can host it on my web site in with my rejetting page (http://www.angelfire.com/mt2/mikesgs500/rejetting).

BTW, I have Uni in the box, V&H, 40 pilots, 127.5 main, 2 washers, 3 turns out. Seems to work ok for me, maybe a tad too rich.

-m
Title: UNI in box...
Post by: The Buddha on October 02, 2003, 08:00:30 AM
Well K&N in airbox is what 127.5 is really ideal for. Find out where its rich and maybe just turn that circuit leaner a little. However you have to try the jetting on the coldest day of the year...Basically in NC...the last few days would be about right for that... :? .
Cool.
Srinath.
Title: Indicative Re-jetting matrix
Post by: scratch on October 02, 2003, 08:29:31 AM
Good Job!!

Good work is rewarded with more good work!
Title: Indicative Re-jetting matrix
Post by: conradvr on October 02, 2003, 04:29:46 PM
Update : 1 (please post your combinations, I will keep updating the table and finally this will be posted kindly by miket on his wesite for future generations - and future jetting questions can be easily referred to his site - saving newbies like myself spending hours searching)
--------------------------------------------------------------------------------


Air Filter: (s) - Stock Air Box, (p) - Pod replacement for Stock Air Box

Exhaust: Perf - aftermarket performance pipe, V&H - performance pipe

Kit: Fac1 - Factory Pro Stage 1, Dyn1 - Dyno tune Stage 1, K&N1 - K&N Stage 1, Fac3 - Factory Pro Stage 3, Dyn3 - Dyno tune Stage 3, K&N3 - K&N Stage 3

Note (result, no of users): r- rich, sr - slightly rich, p - perfect, l - lean, sl - sligtly lean

Pre 2001
Exhaust.....|.Air Filter.....|.Pilot.....|.Main.........|.#4Washers..|.Turns|Note
................|..................|............|.................|..or Kit.........|.........|
1...Stock...|Stock..........|40.........|125...........|1.................|3.........|
2...Stock...|UniF(s)........|40.........|125...........|1.................|3.........|
3...Stock...|K&N(s)........|40.........|127.5........|2.................|3.........|
4...Stock...|UniF(p)........|40.........|................|...................|..........|
5...Stock...|K&N(p)........|40.........|................|...................|..........|
6...Perf.....|Stock..........|40.........|.................|...................|..........|
7...Perf.....|UniF(s)........|40.........|.................|...................|..........|
8...Perf.....|K&N(s)........|40.........|.................|...................|..........|
9...Perf.....|UniF(p)........|40.........|.................|...................|..........|
10.Perf.....|K&N(p)........|40.........|140 - 150...|2..................|3 - 3.5|
11.Perf.....|K&N(p)........|40.........|140 - 150...|K&N3............|3 - 3.5|
12.V&H.....|UniF(s)........|40.........|127.5.........|2.................|3.........|sr,1

Post 2001
Exhaust.....|.Air Filter.....|.Pilot.....|.Main.........|.#4Washers..|.Turns|Note
................|..................|............|.................|..or Kit.........|.........|
1...Stock...|Stock..........|............|.................|...................|.........|
Title: Re: UNI in box...
Post by: miket on October 02, 2003, 05:10:02 PM
Quote from: seshadri_srinathWell K&N in airbox is what 127.5 is really ideal for. Find out where its rich and maybe just turn that circuit leaner a little. However you have to try the jetting on the coldest day of the year...Basically in NC...the last few days would be about right for that... :? .
Cool.
Srinath.

Yeah, in fact, it is running like a champ lately :thumb:
I, on the other hand, was freezing coming back tonight!  It must have been in the fifties! :roll: (I can see those guys up north rolling their eyes   :nana:  )
Title: Indicative Re-jetting matrix
Post by: conradvr on October 02, 2003, 05:56:10 PM
Update : 2 (please post your combinations, I will keep updating the table and finally this will be posted kindly by miket on his wesite for future generations - and future jetting questions can be easily referred to his site - saving newbies like myself spending hours searching)
--------------------------------------------------------------------------------


Air Filter: (s) - Stock Air Box, (p) - Pod replacement for Stock Air Box

Exhaust: Perf - aftermarket performance pipe, V&H - performance pipe

Kit: Fac1 - Factory Pro Stage 1, Dyn1 - Dyno tune Stage 1, K&N1 - K&N Stage 1, Fac3 - Factory Pro Stage 3, Dyn3 - Dyno tune Stage 3, K&N3 - K&N Stage 3

Note (result, no of users): r- rich, sr - slightly rich, p - perfect, l - lean, sl - sligtly lean

Pre 2001
Exhaust.....|.Air Filter.....|.Pilot.....|.Main.........|.#4Washers..|.Turns|Note
................|..................|............|.................|..or Kit.........|.........|
1...Stock...|Stock..........|40.........|125...........|1.................|3.........|
2...Stock...|UniF(s)........|40.........|125...........|1.................|3.........|
3...Stock...|K&N(s)........|40.........|127.5........|2.................|3.........|
4...Stock...|UniF(p)........|40.........|................|...................|..........|
5...Stock...|K&N(p)........|40.........|................|...................|..........|
6...Perf.....|Stock..........|40.........|.................|...................|..........|
7...Perf.....|UniF(s)........|40.........|.................|...................|..........|
8...Perf.....|K&N(s)........|40.........|.................|...................|..........|
9...Perf.....|UniF(p)........|40.........|.................|...................|..........|
10.Perf.....|K&N(p)........|40.........|140 - 150...|2..................|3 - 3.5|
11.Perf.....|K&N(p)........|40.........|140 - 150...|K&N3............|3 - 3.5|
12.V&H.....|UniF(s)........|40.........|127.5.........|2.................|3.........|sr,1
13.SV650..|UniF(p).......|40.........|135............|1..................|3.........|


Post 2001
Exhaust.....|.Air Filter.....|.Pilot.....|.Main.........|.#4Washers..|.Turns|Note
................|..................|............|.................|..or Kit.........|.........|
1...Stock...|Stock..........|............|.................|...................|.........|
Title: Indicative Re-jetting matrix
Post by: conradvr on October 03, 2003, 08:46:37 PM
Miket - can you post this on your website?

thanks
conrad
Title: Indicative Re-jetting matrix
Post by: jiggersplat on October 03, 2003, 09:13:19 PM
anyone got the scoop on just a k&n pod, no exhaust?

dan
Title: Indicative Re-jetting matrix
Post by: chimivee on October 03, 2003, 11:35:31 PM
Quote from: jiggersplatanyone got the scoop on just a k&n pod, no exhaust?

dan

That's my set up right now.

K&N Pod, stock exhaust: 40 pilots, 2.5 turns out, 2 washers (~1.2mm), 147.5 mains.  I think others have used smaller mains - more like 140.  I started w/ 145's and my bike runs better w/ the 147.5's.  Plugs look just about right - definately not rich.  I rode Pkaaso's bike the other day (K&N, slip-on, 150 mains) and it felt comparable - maybe just a tiny bit more pull at the top end.  So I think my mains are just right.  My low-mid throttle seems maybe a little bit soft, but not sure if it's abnormally so.
Title: Indicative Re-jetting matrix
Post by: miket on October 05, 2003, 03:45:32 PM
Quote from: conradvrMiket - can you post this on your website?

thanks
conrad

I will. I was hoping that more people replied.
Title: Indicative Re-jetting matrix
Post by: conradvr on October 05, 2003, 04:20:28 PM
so was I - maybe wait a little longer or start a new thread with a different heading?
Title: Indicative Re-jetting matrix
Post by: conradvr on October 05, 2003, 04:25:29 PM
--------------------------------------------------------------------------------

Update : 3 (please post your combinations, I will keep updating the table and finally this will be posted kindly by miket on his wesite for future generations - and future jetting questions can be easily referred to his site - saving newbies like myself spending hours searching)
--------------------------------------------------------------------------------


Air Filter: (s) - Stock Air Box, (p) - Pod replacement for Stock Air Box

Exhaust: Perf - aftermarket performance pipe, V&H - performance pipe

Kit: Fac1 - Factory Pro Stage 1, Dyn1 - Dyno tune Stage 1, K&N1 - K&N Stage 1, Fac3 - Factory Pro Stage 3, Dyn3 - Dyno tune Stage 3, K&N3 - K&N Stage 3

Note (result, no of users): r- rich, sr - slightly rich, p - perfect, l - lean, sl - sligtly lean

Pre 2001
Exhaust.....|.Air Filter.....|.Pilot.....|.Main.........|.#4Washers..|.Turns|Note
................|..................|............|.................|..or Kit.........|.........|
1...Stock...|Stock..........|40.........|125...........|1.................|3.........|
2...Stock...|UniF(s)........|40.........|125...........|1.................|3.........|
3...Stock...|K&N(s)........|40.........|127.5........|2.................|3.........|
4...Stock...|UniF(p)........|40.........|................|...................|..........|
5...Stock...|K&N(p)........|40.........|147.5........|2.................|2.5......|p,1
6...Perf.....|Stock..........|40.........|.................|...................|..........|
7...Perf.....|UniF(s)........|40.........|.................|...................|..........|
8...Perf.....|K&N(s)........|40.........|.................|...................|..........|
9...Perf.....|UniF(p)........|40.........|.................|...................|..........|
10.Perf.....|K&N(p)........|40.........|140 - 150...|2..................|3 - 3.5|
11.Perf.....|K&N(p)........|40.........|140 - 150...|K&N3............|3 - 3.5|
12.V&H.....|UniF(s)........|40.........|127.5.........|2.................|3.........|sr,1
13.SV650..|UniF(p).......|40.........|135............|1..................|3.........|


Post 2001
Exhaust.....|.Air Filter.....|.Pilot.....|.Main.........|.#4Washers..|.Turns|Note
................|..................|............|.................|..or Kit.........|.........|
1...Stock...|Stock..........|............|.................|...................|.........|
Title: Indicative Re-jetting matrix
Post by: Rashad on October 05, 2003, 04:36:04 PM
Im running:

Vance and Hines Fully system, K&N pods, 40 pilots, 2 washers(for 1mm total) 150 Mains... 99 motor on a 91 gs..lol

Awesome idea!!! :thumb:

Oh yeah, Bob's ignition advancer is on there as well!
Title: Indicative Re-jetting matrix
Post by: Flash on October 06, 2003, 12:39:37 AM
NICE JOB conradvr :thumb:  :thumb:

I always thought about doing this, but you beat me to it.

I have the #1 setup for my '96 GS.

Now all we need is Suzuki part #s (Did I just open up a can of worms or what!?!?!?!?)

#4 washer (hardware store)
#40 Pilot jet (Suzuki part# 09492-40014) - 1 Mikuni #40 non-bleeder
#125 Main jet (Suzuki part# ???????????) - not sure, but this one is easier to get without problems from the Suzuki dealer
Title: Me too...
Post by: The Buddha on October 06, 2003, 09:05:06 AM
Yea me too...
Was running 150/40/3 turns/2 washers with K&N clamp on filters and slip on V&H can on stock headers. Works perfect on my 89.
I now have 37.5 pilots in it... Has 3.5 turns on screws, and has that annoying spot right at take off that has a distinct raspy sound and some weakness in power... 40's are on order...
Cool.
Srinath.
Title: Indicative Re-jetting matrix
Post by: Lars on October 06, 2003, 09:06:04 AM
1993 GS500E: Stock airfilter, stock exhaust, mixture screw 2,75 turns out, needle: needleclip 1 position higher than standard (~ 1 mm) , pilot jet:40, main jet: 125.

The jetting is exactly right at sea-level. Plugs are nice brown color.  
Jetting gets definitely rich when in the mountains. (1 km above sea-level)  Idle drops 300 rpm,  bike gets noticably slower. Luckily Holland is all flat, so always optimum mixture :)

Top speed: 185 km/h (flat on the tank, helmet almost resting on tach :P)
Title: Indicative Re-jetting matrix
Post by: Briggs on October 06, 2003, 10:44:57 AM
I got my 40s in this weekend. I will be installing them tonight, and after  I will let everyone know my results.
Title: Indicative Re-jetting matrix
Post by: conradvr on October 06, 2003, 05:11:32 PM
--------------------------------------------------------------------------------

Update : 4 (WHERE are the post 2001 riders???  please post your combinations, I will keep updating the table and finally this will be posted kindly by miket on his wesite for future generations - and future jetting questions can be easily referred to his site - saving newbies like myself spending hours searching)
--------------------------------------------------------------------------------


Air Filter: (s) - Stock Air Box, (p) - Pod replacement for Stock Air Box

Exhaust: Perf - aftermarket performance pipe, V&H - performance pipe, (s) - slip on, (f) - full system

Kit: Fac1 - Factory Pro Stage 1, Dyn1 - Dyno tune Stage 1, K&N1 - K&N Stage 1, Fac3 - Factory Pro Stage 3, Dyn3 - Dyno tune Stage 3, K&N3 - K&N Stage 3

Note (result, no of users): r- rich, sr - slightly rich, p - perfect, l - lean, sl - sligtly lean

Pre 2001
Exhaust.......|.Air Filter.|.Pilot.....|.Main.........|.#4Washers..|.Turns.|Note
..................|..............|............|.................|..or Kit.........|..........|
1...Stock.....|Stock......|40.........|125...........|1................|3........|p,1
2...Stock.....|UniF(s)....|40.........|125...........|1................|3........|
3...Stock.....|K&N(s)....|40.........|127.5........|2................|3........|
4...Stock.....|UniF(p)....|40.........|................|..................|.........|
5...Stock.....|K&N(p)....|40.........|147.5........|2................|2.5.....|p,1
6...Perf.......|Stock.......|40.........|................|.................|..........|
7...Perf.......|UniF(s).....|40.........|................|.................|..........|
8...Perf.......|K&N(s).....|40.........|................|.................|..........|
9...Perf.......|UniF(p).....|40.........|................|.................|..........|
10.Perf.......|K&N(p).....|40.........|140 - 150...|2...............|3 - 3.5|
11.Perf.......|K&N(p).....|40.........|140 - 150...|K&N3.........|3 - 3.5|
12.V&H(f)...|UniF(s).....|40.........|127.5.........|2...............|3.......|sr,1
13.SV650(s)|UniF(p).....|40.........|135...........|1...............|3........|
14.V&H(s)...|K&N(p).....|40.........|150...........|2...............|3........|p,1


Post 2001
Exhaust.....|.Air Filter.....|.Pilot.....|.Main.........|.#4Washers..|.Turns|Note
................|..................|............|.................|..or Kit.........|.........|
1...Stock...|Stock..........|............|.................|...................|.........|
Title: Indicative Re-jetting matrix
Post by: mjm on October 06, 2003, 05:40:22 PM
Quote from: conradvr--------------------------------------------------------------------------------

Update : 4 (WHERE are the post 2001 riders???  please post your combinations, I will keep updating the table and finally this will be posted kindly by miket on his wesite for future generations - and future jetting questions can be easily referred to his site - saving newbies like myself spending hours searching)
--------------------------------------------------------------------------------

I have had a couple different set-ups on a 2001.

Stock air filter and stock exhaust -  two washers 3+ turns on mixture screws and 135 mains - started a little better, more power but still took forever to warm up and popped and bucked while warming up.

K&N Pods, stock exhaust - #20 pilots, 3 turns, two washers, 142.5 mains - much better warm up and power.

K&N Pods, Cobra F1R - # 20 pilots, 3 turns, 1 washer, 150 mains - also tried 152.5 but was running rich on very hot days.

Starts without the choke in warm weather (70 degrees F and up) indicating that it may be a bit rich down low.  When it is cold enough to need the choke - warm up, to where it will pull without hesitation with the choke off, is about 15 - 30 seconds unless the temperature is below 40 degrees F -  then it may take a block or two.  Below freezing (like it was here this morning) I take the car.

Never touched the "mid-main"
Title: Indicative Re-jetting matrix
Post by: Adam R on October 21, 2003, 01:54:01 AM
I'm running Vance & Hines exhaust, 150 mains, 40 pilots and K&N pod filters with the mixture screws at 3 turns out.  I think the idle is a little lean, so I'll try turning the mixture screws out a little more.  I haven't checked the plugs yet but the bike accelerates strongly through the rpms with no bogs or hesitations.


Adam
Title: Indicative Re-jetting matrix
Post by: Michael on October 21, 2003, 02:06:57 AM
I put this on another post but will repeat it here to keep it all together.
2001, 27 000 km, running 91 octane, Uni in the box, Performance pipe (stock header diameter, 53.5mm collector and muffler inlet, less restrictive but still legal muffler), V&H advancer.
22.5 Pilots, screws 2 1/2 turns.  Needles FactoryPro Stage 1 with clips on second top slot.  127.5 mains.
Fuel consumption about the same as stock.  Maybe slightly rich (based on colour of muffler outlet only) but not bad.
Title: Indicative Re-jetting matrix
Post by: miket on November 03, 2003, 08:58:50 PM
I finally managed to put it on my web site. The URL is http://www.angelfire.com/mt2/mikesgs500/rejetting/Rejetting_Matrix.html
Title: Indicative Re-jetting matrix
Post by: JohNLA on November 03, 2003, 10:52:33 PM
Thanks Mike, and nice job :thumb:
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