advice on 103 stage 4 cams
#41
#42
The new kit also has different heads. Last year it was the 110+ heads with the 95cc CVO combustion chamber. The 2012 kit has the CNC factory heads with the 85cc bathtub combustion chamber. I'd think they will match up nicely with the 259 cams. I just picked up a set of these heads pretty cheaply, and am gonna give them a run in a 107 build, after I do a little more work to them.
I've also changed my wheel pulley to the 68t, which I'd recommend to anyone with a 07-08 touring rig. I'll be swapping my trans pulley to the 30t tri-glide pulley when I tear the motor down for the 107 build. I was gonna do all of that last month, but the weather got too nice, and now I don't really want to lose a weekend. I'm thinking I'll wait until September.
I've also changed my wheel pulley to the 68t, which I'd recommend to anyone with a 07-08 touring rig. I'll be swapping my trans pulley to the 30t tri-glide pulley when I tear the motor down for the 107 build. I was gonna do all of that last month, but the weather got too nice, and now I don't really want to lose a weekend. I'm thinking I'll wait until September.
#43
2012 fatboy 103 stage4 upgrade questin:
Going to get a stage4 upgrade but was wondering if i should get the tw-777 cam instead of the 259e that comes with it, i want the torque right from the get go and have it last and from posts i've seen this would be the case? any input would be appreciated thnx.
#45
I ran the 259E for awhile. Got low end back but wasn't has peppy over 4500 rpm. I installed T-Man's 590 cam and it was great. Excellent overall cam. But I felt I could squeeze out a few more ponies in the higher RPMs with the TR-625 and I was right. The TR-625 stayed in the bike for over 40,000 miles when I traded it for a 2014 Ultra Limited.
If I were to do it again, I would save myself some money and go straight to the TR-625...no doubt about it.
With that cam I dyno'd 114 HP and 115 TQ. I run a D&D Fat Cat 2 into 1 exhaust. The curve was excellent starting at 2200 rpm and it pulled hard all the way to 6000 rpm.
You need to understand though, with a high-lift cam like that, you are certainly going to have allot of valve train noise.
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Brad24 (04-25-2021)
#46
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11-12-2013 10:20 AM