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Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
Depends on rest of build and compression. I have seen good reviews on stock compression but seems it would be better around 10.5:1 with it's 42 closing. Also seems there are better cams IMO for a stock bolt in application. This also all depends on your expectations.
You could talk to a reputable builder so that the engine combo can be tailored to your riding style and needs.
My builder and tuner/builder, both recommended the Andrews 48H and 9.6:1 CR for my rebuild in my 2014 (air) Ultra. I ride in the 2000 to 4000 rpm range, travel two up, fully loaded
I followed their suggestions for my rebuild. I haven't ridden the new combo yet due Canadian winter. Dyno tune is slated for the spring.
Good luck, there is a wealth of information here and out on the web.
Jerry
Ran 54h cams in my 103 2011 FLHTK, along with .030 cometic head gaskets, fullsac head pipe, S&S ac and mufflers tuned on the dyno with tts master tune. Made 99hp & 107 tq. Ran all over the northwest and northern rockies. Valve train was quiet, no pinging, engine ran cool and made excellent power. No problem pulling the steepest hills, even when loaded down and 2 up. Loved that bike!
I bought everything from fullsac performance. Steve really knows his stuff and was extremely helpful. Might want to look at the fullsac website and call and talk with Steve.
What Andrews says: Bolt-in broad tip cams; 96 in., 103 in. limited and 110 in. CVO engines, Cams work best at rpm range of 2200-5600
Fuel Motos take: not as strong as the 48H and some of the others in the lower RPMs, however it comes on quite good in the mid RPMs and carries out well to the upper RPMs
I am aware you are not able to submit all different combo's on how well this cam does when installing 57H with 4 degree advance. My Indy & HD tech "Lead Dyno Tech" believes its a fantastic build, a huge wake up as needed in low end and pulls real hard up to 5200 rpm's. No need for increasing compression either! Some state you lose a little top end, my techs beg to differ. When making more power at the low & mid range spectrum the opponents using 48H cams find themselves real nervous trying to makeup some serious ground in catching me before the traps. lol... B Bop
2012 FLHR (Road King) Stage II Red Ember Sunglo/Merlo Sunglo, Original HD Chrome Laced Profile Aluminum Spoke Tubeless Rims, ABS, Cruise Control, Security Package, Saddlebag LED Spoiler lights, and array of nostalgic & high performance accessories that enhances appearance & blood curdling performance.
Its a shame there is nothing available today that can measure white knuckles & big a$$ smiles
I have a 2014 Limited and I'm running 48 cams with heads that have been ported and polished. Stock size valves, fuel moto header and intake. Dyno tuned, and numbers are 98hp and 114 torque! Pulls like a runaway freight train!
The 57 is probably the most common and better choice as opposed to the 54H with the S&S 570s right up there as well. Any of them will do well in a stock 103 but would do great with just a .030 head gasket. The 570s would be and were my choice and I ran them both ways. At stock compression and now with a .030. Just slightly earlier IVC at 40.
The 54 h cam is going in a 103 wethead with heads by Don at performance heads, they have 82 cc chambers , I am using Carillo 10to 1 pistons and a .030 head gasket, stage 1 air cleaner Fuel Moto headpipe, Supertrapp disc mufflers and a Power vision with target tune.
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