Harley tire shredder kit cam replacement
Thread Starter
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Cruiser
Joined: Jan 2019
Posts: 234
Likes: 6
From: Bahrain
Harley tire shredder kit cam replacement
Hi,
I wanted to know what would be a good replacement for the SE-259 cams that came with my 103 to 110 tire shredder kit, below are the specs of my kit currently:
Big Bore 4.0" Bolt-On Cylinders
CNC-Ported Factory Cylinder Heads
Forged 10.5:1 Compression Pistons
SST Piston Rings
SE-259 cams
Perfect-Fit Pushrods
High-Capacity Roller Tappets
58mm Throttle Body
High Flow Fuel Injectors
Heavy Duty Clutch Spring
T-man air cleaner
D&D fat cat with louvered baffles
Thank you in advance.
I wanted to know what would be a good replacement for the SE-259 cams that came with my 103 to 110 tire shredder kit, below are the specs of my kit currently:
Big Bore 4.0" Bolt-On Cylinders
CNC-Ported Factory Cylinder Heads
Forged 10.5:1 Compression Pistons
SST Piston Rings
SE-259 cams
Perfect-Fit Pushrods
High-Capacity Roller Tappets
58mm Throttle Body
High Flow Fuel Injectors
Heavy Duty Clutch Spring
T-man air cleaner
D&D fat cat with louvered baffles
Thank you in advance.
Advanced
Joined: Nov 2022
Posts: 63
Likes: 33
From: Columbia, SC
Here are the cam specs in case you needed them to compare others. I like these cams actually. They are in a 117, SE Ventilator, V&H True Duals, to CVO cans with a 1/2" hole drilled in the baffle, and CVO heads with high-lift beehive springs though.
259E LIFT .579"/.579" DURATION @.053 246˚/250˚ TIMING @.053 Intake: 19˚ BTDC/47˚ ABDC Exhaust: 58˚ BBDC/12˚ ATDC, TDC LIFT0.182"/.155"
259E LIFT .579"/.579" DURATION @.053 246˚/250˚ TIMING @.053 Intake: 19˚ BTDC/47˚ ABDC Exhaust: 58˚ BBDC/12˚ ATDC, TDC LIFT0.182"/.155"
Grand HDF Member
Joined: Jul 2007
Posts: 3,741
Likes: 8,538
From: Bates County MO
Was the kit measured/set to a specific compression, or bolted together for an "advertised 10.5:1" ? Should make 120 ish squared. May just need a gearing change.
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Cruiser
Joined: Jan 2019
Posts: 234
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From: Bahrain
It was not measured, it is what been advertised in the harley catalogue.
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Grand HDF Member
Joined: Jul 2007
Posts: 3,741
Likes: 8,538
From: Bates County MO
Every one of those I measured came in around 10.3-10.36 CR. Slightly soft for a 47° close cam (intake events are the same SE259E & Woods 8 Woods cams have slightly more aggressive ramps). Either cam shows better results with more compression (10.8-11.0).
I liked to substitute .030" cometic head gaskets, verify/set chamber size, and trim cylinders for a zero deck, assemble, then tune. Typically made 122-125 TQ, 120-125 HP depending on pipe/TB.
I liked to substitute .030" cometic head gaskets, verify/set chamber size, and trim cylinders for a zero deck, assemble, then tune. Typically made 122-125 TQ, 120-125 HP depending on pipe/TB.
Advanced
Joined: Nov 2022
Posts: 63
Likes: 33
From: Columbia, SC
Every one of those I measured came in around 10.3-10.36 CR. Slightly soft for a 47° close cam (intake events are the same SE259E & Woods 8 Woods cams have slightly more aggressive ramps). Either cam shows better results with more compression (10.8-11.0).
I liked to substitute .030" cometic head gaskets, verify/set chamber size, and trim cylinders for a zero deck, assemble, then tune. Typically made 122-125 TQ, 120-125 HP depending on pipe/TB.
I liked to substitute .030" cometic head gaskets, verify/set chamber size, and trim cylinders for a zero deck, assemble, then tune. Typically made 122-125 TQ, 120-125 HP depending on pipe/TB.