Plans for 107"
Thread Starter
|
Cruiser
Joined: Oct 2011
Posts: 204
Likes: 4
From: Fort Worth, TX
Plans for 107"
So I am in the planning stages for a budget 107 build on my '10 FLHTK.
I would like some input on the component selection as well as overall combo.
I already have a FuelMoto air cleaner, SE 255 cams, Power Vision, and D&D slip-ons.
I intend to retain what I already have and use the following for the 107 build.
Hylift-Johnson 2313SE Lifters
Cometic 4.060 .040 thick head gasket
Big Boyz ported heads
Jackpot ceramic coated head pipe and stainless full size crossunder. (Budget allowing)
AMS Moto big bore pistons and cylinder boring (KB pistons, Hastings rings).
I understand I am going to have to be careful about cranking compression.
Big Boyz calculator comes up with 208 psi with a 0 deck.
Is this pushing it? I believe the pistons can tolerate some machine work to reduce compression if required. I know FM gives this option with their CP pistons.
Please let me know your thoughts.
I would like some input on the component selection as well as overall combo.
I already have a FuelMoto air cleaner, SE 255 cams, Power Vision, and D&D slip-ons.
I intend to retain what I already have and use the following for the 107 build.
Hylift-Johnson 2313SE Lifters
Cometic 4.060 .040 thick head gasket
Big Boyz ported heads
Jackpot ceramic coated head pipe and stainless full size crossunder. (Budget allowing)
AMS Moto big bore pistons and cylinder boring (KB pistons, Hastings rings).
I understand I am going to have to be careful about cranking compression.
Big Boyz calculator comes up with 208 psi with a 0 deck.
Is this pushing it? I believe the pistons can tolerate some machine work to reduce compression if required. I know FM gives this option with their CP pistons.
Please let me know your thoughts.
Advanced
Joined: Jun 2009
Posts: 53
Likes: 1
From: Creedmoor, NC
So I am in the planning stages for a budget 107 build on my '10 FLHTK.
I would like some input on the component selection as well as overall combo.
I already have a FuelMoto air cleaner, SE 255 cams, Power Vision, and D&D slip-ons.
I intend to retain what I already have and use the following for the 107 build.
Hylift-Johnson 2313SE Lifters
Cometic 4.060 .040 thick head gasket
Big Boyz ported heads
Jackpot ceramic coated head pipe and stainless full size crossunder. (Budget allowing)
AMS Moto big bore pistons and cylinder boring (KB pistons, Hastings rings).
I understand I am going to have to be careful about cranking compression.
Big Boyz calculator comes up with 208 psi with a 0 deck.
Is this pushing it? I believe the pistons can tolerate some machine work to reduce compression if required. I know FM gives this option with their CP pistons.
Please let me know your thoughts.
I would like some input on the component selection as well as overall combo.
I already have a FuelMoto air cleaner, SE 255 cams, Power Vision, and D&D slip-ons.
I intend to retain what I already have and use the following for the 107 build.
Hylift-Johnson 2313SE Lifters
Cometic 4.060 .040 thick head gasket
Big Boyz ported heads
Jackpot ceramic coated head pipe and stainless full size crossunder. (Budget allowing)
AMS Moto big bore pistons and cylinder boring (KB pistons, Hastings rings).
I understand I am going to have to be careful about cranking compression.
Big Boyz calculator comes up with 208 psi with a 0 deck.
Is this pushing it? I believe the pistons can tolerate some machine work to reduce compression if required. I know FM gives this option with their CP pistons.
Please let me know your thoughts.
Last thing you want to do IMO is put more pressure on a crank with run-out issues.
If more than .003" run-out, reconsider your strategy.
Thread Starter
|
Cruiser
Joined: Oct 2011
Posts: 204
Likes: 4
From: Fort Worth, TX
I'm not doing gear driven cams so I don't think i need to hold to the .003 runout spec. I do know that HD's published .012 is a bit much.
I will check it and if it is excessive I will regroup.
I will check it and if it is excessive I will regroup.
Road Captain
Joined: Jun 2014
Posts: 699
Likes: 232
From: Batcave
I agree. Doing a 107 build and headwork for 255 cams does not make sense at all.
Sponsor
Joined: Dec 2007
Posts: 12,084
Likes: 829
In a 107" touring build, an Andrews 57, or CR .575 would be better choices than that emission-oriented 255.
Scott
Scott
Trending Topics
Seasoned HDF Member
Joined: Mar 2010
Posts: 21,025
Likes: 7,549
From: Poolville
the 255 is a stock trade up, low compression cam and will fall flat on it's face way before 5k. No sense in doing heads if your gonna use that cam. With chain drive you will be fine and yes the moco upped the run out to .012"... 208 ccp is very high and you will have problems tuning the motor with the 255. As said a cam with 38-42* will suite the build good and will carry out a lot further... A woods TW-7H would be a good cam for that build with real good low and mid torque but will still carry up over 5500 rpm set at 10.0-10.2:1 COMP.... But most are using the Andrews 57 cam....
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
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
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,830
Likes: 7,968
From: poway
Make sure you have a reasonably good tuner to tune the bike.