95" jetting
Tourer
Joined: May 2006
Posts: 319
Likes: 0
From: Cape Coral, FL
RE: 95" jetting
Mentor,
If you are not altering your fuel to air ratio, it does not matter if it is more cubes, it is just pulling in more of the already correct air/fuel mixture.
Citation, check S&S web site tech section for carb settings
If you are not altering your fuel to air ratio, it does not matter if it is more cubes, it is just pulling in more of the already correct air/fuel mixture.
Citation, check S&S web site tech section for carb settings
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Stage IV
Joined: Sep 2007
Posts: 4
Likes: 0
RE: 95" jetting
That makes sense. I was still using the CV carb when I started tearing things down, so the E will be run for the first time. I guess I will try 1 size richer on each jet than what the carb came with, since it should be set for an 88".
Road Warrior
Joined: Dec 2006
Posts: 1,530
Likes: 0
From: Diamond Bar, California
RE: 95" jetting
ORIGINAL: ReeseSS
Mentor,
If you are not altering your fuel to air ratio, it does not matter if it is more cubes, it is just pulling in more of the already correct air/fuel mixture.
Citation, check S&S web site tech section for carb settings
Mentor,
If you are not altering your fuel to air ratio, it does not matter if it is more cubes, it is just pulling in more of the already correct air/fuel mixture.
Citation, check S&S web site tech section for carb settings
If an engine is able to move more air thought it, it will require more fuel to make the proper A/F for that engine.
You will use more fuel with a bigger engine, but the timming changes andambient tempuratureswill change the requirements of engines AF ratio. you can have the same 95 inengine, and lower the compresion, and advance the timming it will use more fuel, you can change exhuasts on HDs and it will alter fuel reguirments. on a 100 deg day my bike will run like a banshee with a 150 main but, on a 80 deg day shell ping like hell untill she gets a 155 main.
so, you can have an optuim A/F on one engine and tear it down put it back together, and have acomplete different animal. you just have to get the engine what it wants.
I just wanted to recomend to citationdoc to start rich and lean his way into proper jetting.
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Stage IV
Joined: Sep 2007
Posts: 4
Likes: 0
RE: 95" jetting
I'm trying to start a little rich. After giving it more thought, the jet size will need to be changed if air volume is increased because at a higher air volume the orifice in the jet will become a restriction to the engine getting enough fuel.
Tourer
Joined: May 2006
Posts: 319
Likes: 0
From: Cape Coral, FL
RE: 95" jetting
You are not increasing air volume only if all you are doing is increasing cubes, like you would changing to a less restrictive air cleaner. You are simply pulling in more air/fuel mixture if your only change is additional cubes.By stroking, or larger bore, you are only pulling in more already mixed air/fuel, you are not altering the ratio.
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Joined: Feb 2005
Posts: 61
Likes: 1
RE: 95" jetting
ORIGINAL: ReeseSS
You are not increasing air volume only if all you are doing is increasing cubes, like you would changing to a less restrictive air cleaner. You are simply pulling in more air/fuel mixture if your only change is additional cubes.By stroking, or larger bore, you are only pulling in more already mixed air/fuel, you are not altering the ratio.
You are not increasing air volume only if all you are doing is increasing cubes, like you would changing to a less restrictive air cleaner. You are simply pulling in more air/fuel mixture if your only change is additional cubes.By stroking, or larger bore, you are only pulling in more already mixed air/fuel, you are not altering the ratio.
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Cruiser
Joined: May 2020
Posts: 148
Likes: 33
From: Carlisle, Pa
Went from a standard 80" Evo to a Stroker 89" and I can DEFINITELY say the jetting is WAY bigger than it previously had.
Heck, it wouldn't even run with the jets that were in the CV40 previously.
It was 42 pilot 185 main and now I'm at 52 pilot 200 main so whoever said it doesn't matter or it won't change is incorrect.
If you want to try for yourself I'll buy you a airplane ticket to my house and you can spend as much time as you wanted to in trying to get it to run with ANYTHING other than what I've got in it currently.
Heck, it wouldn't even run with the jets that were in the CV40 previously.
It was 42 pilot 185 main and now I'm at 52 pilot 200 main so whoever said it doesn't matter or it won't change is incorrect.
If you want to try for yourself I'll buy you a airplane ticket to my house and you can spend as much time as you wanted to in trying to get it to run with ANYTHING other than what I've got in it currently.
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