80" Evo motor S&S carb Jetting ???
#1
10-05-2013 | 05:15 PM
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Intermediate
Joined: Jan 2013
Posts: 30
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From: Spokane
80" Evo motor S&S carb Jetting ???
I have a mildly built 80"? evo 10 over bore w/ Harley pistons, Heads by Short Block Charlie's performance 7mm rebuild shaved 9.5:1 comp., crane 300 2B cam, adj. lifters, accel ignition and S&S super e. have abt 13k on this motor it runs very strong to 95 or so and fall flat. I'm running 24/48 gears. ..... before this rebuild I was running stock comp. a ev27 cam, same carb & ign.set up and 24/49 gears, it wasn't as strong but would pull steady to 110 and still go to bounce the spdo. So now its quicker but falls flat at 95mph. Jetting I hope is the problem. before I start grabbinin in the dark any idea what size jets I should be runnin...?? Not lookin to gointo the carb till I have some jets in my hands.
#7
01-28-2017 | 03:50 PM
6th Gear
Joined: Oct 2016
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From: BelAir, Maryland 21014
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#8
01-28-2017 | 05:27 PM
Seasoned HDF Member
Joined: Mar 2010
Posts: 18,471
Likes: 5,567
From: Poolville
I have a stock 1340 Heritage with Vance and Hines Longshots and a Hypercharger. I just snagged an S&S Super E and don't know if I need to change the jets for the open pipes and breather. the stock jets that came with it are .0295 and .072...any help would be appreciated
Approximate Jetting For S&SŪ Super E & G Carburetors
Displacement
displacement........ 883cc 74 to 88ci 96 to 107 ci 111 to 124 ci
Intermediate jet ... 265 - .028 .0295 .031 .031
Main Jet .066 .072 .076 .078
These jetting recommendations are a starting point only. Rejet carb for best performance.
https://www.sscycle.com/docs/default...vrsn=2
#9
01-28-2017 | 05:31 PM
Seasoned HDF Member
Joined: Mar 2010
Posts: 18,471
Likes: 5,567
From: Poolville
I have a mildly built 80"? evo 10 over bore w/ Harley pistons, Heads by Short Block Charlie's performance 7mm rebuild shaved 9.5:1 comp., crane 300 2B cam, adj. lifters, accel ignition and S&S super e. have abt 13k on this motor it runs very strong to 95 or so and fall flat. I'm running 24/48 gears. ..... before this rebuild I was running stock comp. a ev27 cam, same carb & ign.set up and 24/49 gears, it wasn't as strong but would pull steady to 110 and still go to bounce the spdo. So now its quicker but falls flat at 95mph. Jetting I hope is the problem. before I start grabbinin in the dark any idea what size jets I should be runnin...?? Not lookin to gointo the carb till I have some jets in my hands.