Old screaming eagle camshaft info. SE-2
Thread Starter
|
5th Gear
Joined: Aug 2008
Posts: 9
Likes: 0
Old screaming eagle camshaft info. SE-2
Found a N.O.S old Evo SE-2 cam kit with springs and all. Found the specs. This will be for a stock 1997 roadking fuel injected. Has slip on mufflers. Bought it on a whim.
Anyone have any experience with the old SE-2 camshaft? I was told its actually not a Bad cam.
Anyone have any experience with the old SE-2 camshaft? I was told its actually not a Bad cam.
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,081
Likes: 2,159
From: Ohio
49 intake closing, 257/265 duration, 516 lift. Going to need at least 10.8-1 in a 80" to not need a pusher vehicle below 3000 rpm, if a cam needs this much compression to work, run a 590 lift and get it over with.
Modern performance street cams are working with opposite numbers, earlier intake close, shorter duration and higher lifts which allows lower power and the bigger lift can carry horsepower into higher rpm's.
Being brutally honest, a large percent of modern cams are going to work better than that one for what engine work needs done, sorry for not being the support you may have wanted but not a fan of the SE numbers
PS: bagger cams have intake closings in the 36-42 range to build compression in the lower rpm range, a 49 intake closing will be letting it out
Modern performance street cams are working with opposite numbers, earlier intake close, shorter duration and higher lifts which allows lower power and the bigger lift can carry horsepower into higher rpm's.
Being brutally honest, a large percent of modern cams are going to work better than that one for what engine work needs done, sorry for not being the support you may have wanted but not a fan of the SE numbers
PS: bagger cams have intake closings in the 36-42 range to build compression in the lower rpm range, a 49 intake closing will be letting it out
Last edited by 1997bagger; Jul 5, 2017 at 09:48 PM.
Seasoned HDF Member
Joined: Oct 2015
Posts: 13,549
Likes: 34,794
From: Pine Flat Dam/South Bay Area, CA
SE-2 is gonna be real lazy on the bottom end even in a light bike like a FXR. The party won't be starting until 3500rpm even with a bump in compression. A short duration high lift cam is a better choice especially for a heavy bike like yours.
Advanced
Joined: Jan 2013
Posts: 86
Likes: 1
From: phoenix az
This is very interesting as my stage2 road kind has one and I have been wondering the specs.
Like1997 bagger said I have a 98 and the stage 2 and mine is laggy down low but pulls hard up top
Like1997 bagger said I have a 98 and the stage 2 and mine is laggy down low but pulls hard up top
Last edited by cowboyshovel79; Jul 5, 2017 at 11:19 PM.
Stellar HDF Member
Joined: Jan 2015
Posts: 2,504
Likes: 150
From: ct
Unfortunately I learned the hard way not to increase spring pressure until the lift of the cam is high enough to require it, (.550") approximately. Then a suitable lifter must be matched with them.
Trending Topics
Advanced
Joined: Jan 2013
Posts: 86
Likes: 1
From: phoenix az
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
6 Weirdest Harley-Davidsons Ever Sold to the Public
Verdad Gallardo
7 Times Harley-Davidson Chucked Tradition Out the Window
Verdad Gallardo
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
Thread Starter
|
5th Gear
Joined: Aug 2008
Posts: 9
Likes: 0
i did some more research and found out this is an early kit. 25490-87 not a 25490-87A
the specs of the cam are different than the later "A" .516 lift cam
specs are
.505" lift
int-257 exh-265
int 27/55
exh 55/32
overlap 27+32
says its a bolt in for hyd. or solid tappet.
does this change anything?
the specs of the cam are different than the later "A" .516 lift cam
specs are
.505" lift
int-257 exh-265
int 27/55
exh 55/32
overlap 27+32
says its a bolt in for hyd. or solid tappet.
does this change anything?
Seasoned HDF Member
Joined: Aug 2008
Posts: 5,081
Likes: 2,159
From: Ohio
i did some more research and found out this is an early kit. 25490-87 not a 25490-87A
the specs of the cam are different than the later "A" .516 lift cam
specs are
.505" lift
int-257 exh-265
int 27/55
exh 55/32
overlap 27+32
says its a bolt in for hyd. or solid tappet.
does this change anything?
the specs of the cam are different than the later "A" .516 lift cam
specs are
.505" lift
int-257 exh-265
int 27/55
exh 55/32
overlap 27+32
says its a bolt in for hyd. or solid tappet.
does this change anything?
Thread
Thread Starter
Forum
Replies
Last Post