103 ported heads
HDF Community Team
Joined: Jun 2006
Posts: 12,782
Likes: 2,610
From: san antonio
Nothing wrong with the 48 in that combination. Having said that it really depends on riding style and where you want the power. Suggest you quiz FM about cam choices based on how you ride the bike and your expectations.
Consider compression releases as part of the upgrade. Manual or ACR's if bike is wired for them. Of course, you will need fuel management and a dyno tune or a "map" from FM that you can upload; dyno tune preferred.
Consider compression releases as part of the upgrade. Manual or ACR's if bike is wired for them. Of course, you will need fuel management and a dyno tune or a "map" from FM that you can upload; dyno tune preferred.
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6th Gear
Joined: Sep 2023
Posts: 13
Likes: 3
From: Moscow
if i made heads level b in fuel moto, i need change cams or 48h will work good? Thats question
HDF Community Team
Joined: Jun 2006
Posts: 12,782
Likes: 2,610
From: san antonio
Seasoned HDF Member
Joined: Mar 2010
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From: Poolville
Pretty sure Head port design is particular to the cam you want to use which is particular to the way you ride and where you want the power..
If I was going to go with ported heads with bigger valves like a stage II head I would not be going with the 48 cams..
If I was going to go with ported heads with bigger valves like a stage II head I would not be going with the 48 cams..
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6th Gear
Joined: Sep 2023
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From: Moscow
which one you can recommend? What about t-man 555 torqster
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HDF Community Team
Joined: Jun 2006
Posts: 12,782
Likes: 2,610
From: san antonio
That cam would work as would he 48; best choice probably not. Take my advice and check out the 103 dynos on the FM website; there are many with ported heads and a variety of cams. Better yet, call FM and get their recomnendations.
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6th Gear
Joined: Sep 2023
Posts: 13
Likes: 3
From: Moscow
only one cam with ported heads (103 engine) on website fuelmoto - cr 570-2