103ci SE ST Legal Big Bore upgrade
103ci SE ST Legal Big Bore upgrade
The Stage I kit increases the Bore from 96ci to 103ci. The Stage II kit increases the Bore the same amount but adds the SE 255 Cam kit (25638-07). What does the Cam kit add to my performance upgrade? I have always been told that inches are important -or -size matters. But the Cam kit isn't adding inches or size -so what does it add to the performance?
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Joined: Apr 2006
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RE: 103ci SE ST Legal Big Bore upgrade
First off... Welcome Aboard... Please take a moment and post an intro in the NEW MEMBERS SECTION at your earliest convenience.....
The upgrade of the cams is important as it modifies the duration (Time) that the valves for the intake and exhaust are open or closed, to assist in getting more Fuel/Air mix intoand Spent gas' out of the combustion chamber....
Additionally, it modifies the SPECIFIC point of engine rotation (Degrees) when they are opening and closing...
By adding the SE 255 cams to your 103 kit, you will have a great deal better bottom end torque, as well as higher HP numbers when out on the interstate.....
Torque gets you moving.....
Horsepower makes you move faster.....
The upgrade of the cams is important as it modifies the duration (Time) that the valves for the intake and exhaust are open or closed, to assist in getting more Fuel/Air mix intoand Spent gas' out of the combustion chamber....
Additionally, it modifies the SPECIFIC point of engine rotation (Degrees) when they are opening and closing...
By adding the SE 255 cams to your 103 kit, you will have a great deal better bottom end torque, as well as higher HP numbers when out on the interstate.....
Torque gets you moving.....
Horsepower makes you move faster.....
Cruiser
Joined: May 2007
Posts: 194
Likes: 0
From: DETROIT
RE: 103ci SE ST Legal Big Bore upgrade
ORIGINAL: Shovelhead Bob
By adding the SE 255 cams to your 103 kit, you will have a great deal better bottom end torque, as well as higher HP numbers when out on the interstate.....
By adding the SE 255 cams to your 103 kit, you will have a great deal better bottom end torque, as well as higher HP numbers when out on the interstate.....
Outstanding HDF Member
Joined: Apr 2006
Posts: 2,537
Likes: 21
RE: 103ci SE ST Legal Big Bore upgrade
ORIGINAL: fxr_george
No offence but the SE 255 are weak. I want to do the same SE 103 kit but the cams I will not use.
ORIGINAL: Shovelhead Bob
By adding the SE 255 cams to your 103 kit, you will have a great deal better bottom end torque, as well as higher HP numbers when out on the interstate.....
By adding the SE 255 cams to your 103 kit, you will have a great deal better bottom end torque, as well as higher HP numbers when out on the interstate.....
For that matter, why stick with a set of Flat-tops and stock heads with a wimpy and restrictive induction module??????
Those cams are a bolt in and the ECM configuration are PURPOSE DESIGNED to work with those specific components, without needing to revamp the valve train, add on a Fuel management system, etc....
Mods to "Kits" require very specific, and sometimes prohibitive measures that impact on durability, rideability, tunability and most importantly owner confidence....
Cruiser
Joined: Jun 2007
Posts: 241
Likes: 3
From:
RE: 103ci SE ST Legal Big Bore upgrade
ORIGINAL: davlyo
The Stage I kit increases the Bore from 96ci to 103ci. The Stage II kit increases the Bore the same amount but adds the SE 255 Cam kit (25638-07). What does the Cam kit add to my performance upgrade? I have always been told that inches are important -or -size matters. But the Cam kit isn't adding inches or size -so what does it add to the performance?
The Stage I kit increases the Bore from 96ci to 103ci. The Stage II kit increases the Bore the same amount but adds the SE 255 Cam kit (25638-07). What does the Cam kit add to my performance upgrade? I have always been told that inches are important -or -size matters. But the Cam kit isn't adding inches or size -so what does it add to the performance?
I guess if something goes wrong we'll find out whether they are actually going to stand behind it as they told me.
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Joined: Aug 2007
Posts: 80
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From: Mobridge, SD
RE: 103ci SE ST Legal Big Bore upgrade
Has anyone added the stage 1, 103 kit ( without cams) and what did it do for you please?
Say stage 1 , 103 kit, a good air intake, free flow exhaust & SERT. would it be worth it?
I am sure it would be a mild & reliable. Maybe make 75-80HP & 85-95TQ? anybody done this yet?
Say stage 1 , 103 kit, a good air intake, free flow exhaust & SERT. would it be worth it?
I am sure it would be a mild & reliable. Maybe make 75-80HP & 85-95TQ? anybody done this yet?
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Cruiser
Joined: Jul 2007
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From:
RE: 103ci SE ST Legal Big Bore upgrade
The 103 can be done with no kit to 07's TC96 by bore the cyl and new pistons, the motor is already stroked and all......The air, pipes and EFI are almost always done even if no 103 kit is.
sj
sj
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Joined: Aug 2007
Posts: 80
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From: Mobridge, SD
RE: 103ci SE ST Legal Big Bore upgrade
ORIGINAL: sleepyjim
The 103 can be done with no kit to 07's TC96 by bore the cyl and new pistons, the motor is already stroked and all......The air, pipes and EFI are almost always done even if no 103 kit is.
sj
The 103 can be done with no kit to 07's TC96 by bore the cyl and new pistons, the motor is already stroked and all......The air, pipes and EFI are almost always done even if no 103 kit is.
sj