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General Category >> Rubber Side Down! >> Jetted lean/rich/just right? You tell me!!
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Message started by Yoshi on 05/20/14 at 18:48:56

Title: Jetted lean/rich/just right? You tell me!!
Post by Yoshi on 05/20/14 at 18:48:56

So I have my Mac muffler on with stock air intake

155 main with a 52.5 pilot runs good at 2 turns out, pulls strong

What do you think?
Rich?
Just right?

plug has about 300 miles on it with moderate driving

I seem to be getting about 39 mpg this way

http://https://scontent-1.2914.fna.fbcdn.net/hphotos-frc3/t1.0-9/10257922_10152127784438870_8592497111747162209_n.jpg

Title: Re: Jetted lean/rich/just right? You tell me!!
Post by pgambr on 05/20/14 at 19:26:27

May be just a hair on the rich side, but I no tech guy. This link will help a little bit.

http://suzukisavage.com/cgi-bin/YaBB.pl?num=1126253987

Title: Re: Jetted lean/rich/just right? You tell me!!
Post by shorty on 05/20/14 at 19:31:31

run more miles and check the plug again.. mpg should be higher so maybe a little rich?
better rich than lean ;)

Title: Re: Jetted lean/rich/just right? You tell me!!
Post by Yoshi on 05/20/14 at 19:35:47

I have a crappy picture of my old plug when i ran stock jets and stock pipe, looks a little leaner (little lighter tip)

I tried the 152.5 jet and the bike ran good that way too, I may switch back to that

http://https://scontent-1.2914.fna.fbcdn.net/hphotos-prn1/t1.0-9/10251967_10152054902968870_7407900478367348240_n.jpg

Title: Re: Jetted lean/rich/just right? You tell me!!
Post by WD on 05/21/14 at 00:20:26

155 is overkill for sea level. If I was in Sag Harbor, Bridgehampton, Watermill etc where I have family I'd be running 152.5 or 150 over 52.5 or 50. You have the same problem on the island that we do here in Dixie, soggy air. Lean it out a stage or 2 on the top end, 1 down low, will run fine and bring your fuel economy up back a bit. Poorly atomized fuel (big jet) plus high humidity will coke up the cylinder head, exhaust ports, header pipe and muffler.

I ran a 155/55 jet set in the mountains and at sea level in WA. Bike smoked like an old tractor trailer and got a whopping 36mpg consistently. Pretty pathetic when that exact same bike with stock jets and modified exhaust in MS, TN, KY, AR, AL, FL and LA averaged 75mpg commuting and a high of 85mpg on the freeway...

Title: Re: Jetted lean/rich/just right? You tell me!!
Post by Yoshi on 05/21/14 at 03:49:39

I'm gonna throw in the 152.5 today, I dont want to go with the 150 but I'll try it out after I do a plug check with the 152.5

Thanks

Title: Re: Jetted lean/rich/just right? You tell me!!
Post by Yoshi on 05/21/14 at 17:29:47

main jet replaced to a 152.5, I'll stick with the 52.5 pilot for now, I know Im never done tinkering with this thing ;D

https://www.youtube.com/watch?v=qpHQk-pA6fI