HD 255 & Andrew's 48
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Cruiser
Joined: Aug 2011
Posts: 119
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From: Pennsylvania
HD 255 & Andrew's 48
Sorry for another cam question guys but hopefully mine is pretty simple. These 2 cams are going to be pretty much the same except I would think the bike would run a little cooler with the 48 because it's a non emissions cam is that correct?
These cams are similar in that they are torque cams, the engine heat comes from the fact
that it's an internal combustion engine. The exhaust has heat because of combustion, and has
to pass through a Catalytic converter, that creates more heat.
that it's an internal combustion engine. The exhaust has heat because of combustion, and has
to pass through a Catalytic converter, that creates more heat.
Ultimate HDF Member
Joined: Jun 2009
Posts: 6,899
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From: OH
I wouldn't look at the SE255 for a 103. IMO and it's just that.... the only SE cam that I would use is a 204 with 1.75 rocker arms and that is not a true stump puller it's a mid range cam. The 48's were designed for the 96's and the 57's were designed for the 103's. Personally I would drop to a .030" head gasket and go with the 57. I may ride different than you do but that 255 shuts off way to early for my tastes.
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Joined: May 2012
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From: Carlsbad, CA
I wouldn't look at the SE255 for a 103. IMO and it's just that.... the only SE cam that I would use is a 204 with 1.75 rocker arms and that is not a true stump puller it's a mid range cam. The 48's were designed for the 96's and the 57's were designed for the 103's. Personally I would drop to a .030" head gasket and go with the 57. I may ride different than you do but that 255 shuts off way to early for my tastes.
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HDF Community Team
Joined: Jun 2006
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From: san antonio
The 48 would be my choice simply because it will carry out the TQ curve a bit further and has a bit lower CCP to deal with. However, if you don't see 4500 rpms often, the 255 is a torque monster in a 103. You should have compression releases with either cam. Also upgrade inner cam bearings as part of the project and take a good look at your tensioners; early or late model, still worth a look-see. You will need a fuel management system and a good tune with either cam as well.
Seasoned HDF Member
Joined: May 2012
Posts: 32,934
Likes: 36,028
From: Carlsbad, CA
The 48 would be my choice simply because it will carry out the TQ curve a bit further and has a bit lower CCP to deal with. However, if you don't see 4500 rpms often, the 255 is a torque monster in a 103. You should have compression releases with either cam. Also upgrade inner cam bearings as part of the project and take a good look at your tensioners; early or late model, still worth a look-see. You will need a fuel management system and a good tune with either cam as well.
