Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[sbcharlie]

i guess the hardest desicion is gear drive or chain and how deep is your wallet.if you can aford it go gear drive.between andrews and S&S you have quite a selections of cams.if you decide to stay with chain drive polish the cam chains. this is easy to do on a grinder. get a metal deburring whee and polish the chains to look like bracelets.in most cases you will need to install new shoes any way. to choose a cam you need to consider do you want torque or rpm. another factor is compression or lack of it in 103 engines.
another factor is the squish band, that is the space above the piston at tdc,top dead center. i do not know if there are domed pistons available for 103 engines. decking a stock head will not do much. if you install se heads or aftermarket heads you dimminsh
the value of your bike. just my thoughts on cam choices
thanks short-block charlie

[Cabo]

Is there anywhere you can find the spec on screaming eagle cams (i.e. lift and duation)?

[sbcharlie]

look in your sceaming eagle catalog they list most recent grinds. there is a new catlog out it came out in the spring. a cam of choice is a se251 with 9.8/1 compression

[geezerglide]

Charlie,

Welcome aboard, your expertise and knowledge will be of great help.

geezerglide (Leo)

[Cabo]

Can someone explain the effects of lift and duration as it appliys to horsepower and tork.  I just went with my dealers suggestion of the SE 257 cam.  It runs great above 3000rpm but seems to lack below that.  

Any help in understanding the differences in cams would be helpful. [smiley=nixweiss.gif]

[the O`Fender]

Cabo
I have been asking the same question for almost a year (Cam Specs for SE253) and have yet to find anyone to answer satisfactorily!! From this site I was told .530 lift and thats it, no duration no LSA nothing else. If you do find those numbers please post them here. [smiley=confused5.gif]

[mr_magoo]

Remember the old adage SPEED COST HOW FAST CAN YOU AFFORD TO GO.

[Cabo]

Remember the old adage SPEED COST HOW FAST CAN YOU AFFORD TO GO.

I understand that..but I like to  [smiley=confused5.gif]know what my money is doing.  I just dont understand the effrects of lift and duration as it relates to HP and tork. I would love to find somewhere I could find out more about it and not just trust my dealer.

[the O`Fender]

Cabo this might help some, look around this site you will find useful info [smiley=beerchug.gif]
http://www.nightrider.com/biketech/selectcam.htm

[roadrunner]

my dealer recommends the S&S Geardrive 585G cam, and quick-install pushrods, with the stage 1, aircleaner and true duals.  any options?

[ratrbridin]

Roadrunner, just an opinion based on alot of miles and a supply of used headers/pipes hanging on my garage wall. If you want to maximize syphoning of exhaust gases, allows your heads to flow smoother creating more power, 2 into 1 is where it's at. I know we all like the look of duels on the big bikes but I highly recommend D&D out of El Paso TX. I have owned 4 of their headers on evo / TC88 / TC95 and just put a "Borzilla" on my new FLHTCSE2. Hey, I know what opinions are like, but just thought I would throw mine in...

[larouchedem]

the ofender,

Here's what I have;

Duration - 239/256
Lift .530"

Events- 6/53 - 59/17

That's 113.5 intake C/L and 111 exh C/L.

Also have been told by another source that exhaust duration is 255 on rear cam.
Dave



link=board=CVO_TC;num=1089202441;start=0#5 date=07/08/04 at 14:17:30]Cabo
I have been asking the same question for almost a year (Cam Specs for SE253) and have yet to find anyone to answer satisfactorily!! From this site I was told .530 lift and thats it, no duration no LSA nothing else. If you do find those numbers please post them here. [smiley=confused5.gif][/quote]

[larouchedem]

Hi Charlie,

Dave Brode from Preacher's group here.

<snip

>another factor is the squish band,

Is there a slanted quench surface in the heads, like in an HTCC head? Or, is the chamber round with a small flat quench area around the cylinder, sort of like when an 883 head is on top of a 1200 piston?
<snip

>i do not know if there are domed pistons available for 103 engines.

As far as I know, only for the HTCC heads. Weird looking dome. I saw a pair today.
Dave

[bubbarosa]

you can see a pic of these "weird" looking pistons here

http://www.harley-davidson.com/pdf/SE_032_067.pdf

item 47 with a chart following on the applications of the many different heads and pistons.  None of which are listed for the stock heads.  The 103+ heads are item 42

[larouchedem]

ratrbridin,

Does the left side dummy pipe that they sell work with the FLH Boarzilla? I have their smaller primary 2 into 1 "fatcat" on my FLHT with the left side dummy.
Dave


link=board=CVO_TC;num=1089202441;start=0#10 date=12/15/04 at 19:32:57]Roadrunner, just an opinion based on alot of miles and a supply of used headers/pipes hanging on my garage wall. If you want to maximize syphoning of exhaust gases, allows your heads to flow smoother creating more power, 2 into 1 is where it's at. I know we all like the look of duels on the big bikes but I highly recommend D&D out of El Paso TX. I have owned 4 of their headers on evo / TC88 / TC95 and just put a "Borzilla" on my new FLHTCSE2. Hey, I know what opinions are like, but just thought I would throw mine in...[/quote]