57H Cams Install and Tune
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Tourer
Joined: Mar 2010
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57H Cams Install and Tune
I picked up my 2009 Road King this morning from Doc's Performance after he got done installing Andrews 57H cams and a HD Heavy Breather. I cannot say enough about how professional Doc was answering all my questions and accommodating my schedule. He cleared up for me a bunch of the nonsense I read online, like cutting pushrods and all my myths about dyno results. He took the time to explain all the dyno results and explained why 20 pulls are necessary. His shop is spotless and his work is top notch. After getting into my bike he noticed the O2 sensors werent functioning properly so he replaced them as well as my head breathers. Doc got the VE of both cylinders dialed in and the bike pulls very hard. Its honestly a different bike. The throttle reponse is so much quicker than factory. It idles and starts smoother and easier. The sound is awesome. I rode about 20 miles this afternoon and got a nice stretch of road where I was able to let it eat and I backed out before the bike ran out of steam north of 100. It revs so much quicker its awesome. Enough of my babbling, truth is in the results below. Note that these are SAE not the STD a lot of folks use because of their higher numbers. Needless to say I am absolutely stoked with 93 hp and 114.8 torque. The red lines on the graph are the results with the parts installed but before Doc did any tuning. Its amazing how much impact a 30 hp and 30 ft lbs increase over stock has on my *** dyno!
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Tourer
Joined: Mar 2010
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stock 103, 57H cams, HD Heavy Breather, factory no-cat head pipe, Jackpot 4" pipes, and Docs tune.
Elite HDF Member
Joined: Sep 2007
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From: Near Myrtle Beach, SC
Glad you clarified. I was wondering why all of that with a stock header pipe (according to what the dyno sheets said). Glad to hear the cat was removed. Would like to see how much better an aftermarket x-pipe header (fuel moto 2-1-2, etc.) would fare.
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Tourer
Joined: Mar 2010
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09 came from factory without a cat. I asked about an aftermarket head pipe versus my stock pipe and Doc said the gain would be negligible. The factory pipe without cat and the jackpot pipes flow more than enough for what my motor and mods produce. It may sound better but performance gains, if any, may only exist towards the redline and I don't do any riding there.
Stellar HDF Member
Joined: Aug 2007
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From: Virginia Beach
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Stellar HDF Member
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From: Virginia Beach
No starting issues. None. Valve train makes some noise. See my full write up here: https://www.hdforums.com/forum/touri...n-a-103-a.html I live in Hampton Roads, VA
Last edited by jammerx; Apr 1, 2013 at 08:57 PM.
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