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[08_ScreaminSpringer]

So the heads on my 08 screamin eagle 110 are not that great in flowing or port design? What about the valve size? The bike runs fine but i like the idea of more power .. Also this is my first bike and i love learning about it.. So it's best to go with a piston kit to rise the compression not mill the heads. Are all heads the same CC or some heads less cc from the start?

Also if you mill alot you exhaust would be lower and would be fitting problems..
 

[08_ScreaminSpringer]

Where can i read more on the motor on my 08 110?  Valve size, head cc, Valve springs max lift, does the piston have a -cc or dome? I do know that it has 50mm TB and SE255 cams and 9:3:1 i will check my cranking compression. Who has checked there cranking compression and do you do it with the TB WOT? with both plugs out?
Thanks

[Unbalanced]

Where can i read more on the motor on my 08 110?  Valve size, head cc, Valve springs max lift, does the piston have a -cc or dome? I do know that it has 50mm TB and SE255 cams and 9:3:1 i will check my cranking compression. Who has checked there cranking compression and do you do it with the TB WOT? with both plugs out?
Thanks

On the 07's the information is:     other than the throttlebody I believe the information is still correct.  The only other change I remember is the front head due to the motor mount.   
2.080 valves intake, 1.625 exhaust
head cc's ~ I don't recall the information
Flat top piston 
yep 50 mm tb  this was changed in 08 from the 07 model that had a 46mm throttlebody with the fly by wire.
255 cams
Cranking compression is around 220 - 230 without ACR with acr drops down to 150 - 160.    yep throttlebody is open and both plugs out.

[08_ScreaminSpringer]

Thanks for the info. What are the diff. head gaskets  .020-.030??
Anyone know the cc of the 08 head..  Thanks!

[Talon]

Here's a few sites on head work, a good reputable head shop knows what to do. Usually for a street motor of you size you don't need to go with larger valves, unless your running it hard all the time and looking just for top end HP. The springs on 05 and up motors should be good up to .650 lift unless you rev the motor over 6 grand a lot.

http://www.hotbikeweb.com/tech/0212hb_head_porting/index.html

http://www.nightrider.com/biketech/hdheads_ports.htm

[Unbalanced]

On 03's, 04's and 05's the springs were good to 630 - 640 lift.   They were tested by Zippers and 2 others to double check the lifts.   

I was told max lift on the 07's was 600.  For "most" guys there isnt much of a need for cruisers to go beyond the 2.080 intakes.   In the past I never wanted to go beyond 1.94' intakes on a street motor to make torque and play.   Each head guy has their own take on it and would rely on them to their thing that you have entrusted them to do.

[Talon]

On 03's, 04's and 05's the springs were good to 630 - 640 lift.   They were tested by Zippers and 2 others to double check the lifts.   

I was told max lift on the 07's was 600.  For "most" guys there isnt much of a need for cruisers to go beyond the 2.080 intakes.   In the past I never wanted to go beyond 1.94' intakes on a street motor to make torque and play.   Each head guy has their own take on it and would rely on them to their thing that you have entrusted them to do.

I was told that the pre 05, non beehive springs won't handle as much lift as the newer ones.

[SE08RK]

The only benefit of beehive springs it that they have a broad freedom from harmonic flex during rebound. The spring will actually dampen itself and not transmit the harmonics into its load. The load carrying capacity or load per height is harder to mathematically figure due to the decreasing spiral of their top coils so an actual measurement is necessary. Maximum total lift must be carefully scrutinized because of the ability of the spring to go beyond 'stacked' as with a conventional valve spring.

Beehive springs answer a multitude of problems over conventionally manufactured springs. But, they have longevity problems due to their active nature. They work themselves to death. The span of life, or sustained temper is no where near what a cylindrically wound spring can attain without degrade. Drag strip use is fantastic - long duration use is not so good.

BC

[rednectum]

The only benefit of beehive springs it that they have a broad freedom from harmonic flex during rebound. The spring will actually dampen itself and not transmit the harmonics into its load. The load carrying capacity or load per height is harder to mathematically figure due to the decreasing spiral of their top coils so an actual measurement is necessary. Maximum total lift must be carefully scrutinized because of the ability of the spring to go beyond 'stacked' as with a conventional valve spring.

Beehive springs answer a multitude of problems over conventionally manufactured springs. But, they have longevity problems due to their active nature. They work themselves to death. The span of life, or sustained temper is no where near what a cylindrically wound spring can attain without degrade. Drag strip use is fantastic - long duration use is not so good.

BC

good xplanation. tis why they are usd in nascar. also why i have em in my bike----so i can spin it up!

[08_ScreaminSpringer]

Has anyone had work done at Kingofcubes??

[skyhook]

just bought some heads, head gaskets, pushrods and compression releases from king of cubes...randy was very helpful and did everything he promised

[chunngle]

Has anyone had work done at Kingofcubes??

I just had Randy from Kingofcubes put together a package for me using iron sleeved Axtell cylinders after having problems with nikasil coating seperating from the cylinder walls in a 124" build. He is very knowledgeable and thorough. A great guy to work with.