5 Most Common Harley Twin Cam Issues to address before they address your Motorcycle! 1999-2017 H-D

Twin Cam Harley Davidson’s are the brands leading workhorse, being such they incur plenty of wear, tear, are overworked and underfed. inspecting, checking and replacing these parts will guaranteed keep you going longer than the rest of the HOG pen

Cam Tensioners are going to be the Most Important, as this is the heart of the bike, this is a big part why the twin cam gets such a bad wrap but if you maintain doing your maintenance it should be no issue


1999-2006 Twin Cam Tensioners - Check and Replace shoes at least every 10,000, The little plastic particulates like to drop off in chunks causing plastic bits in the oil pump if not addressed which lead to a whole host of failures.
You can replace the shoes to get by, but it's only right to do the full tensioners every 25k-30k miles and if you’ve never touched it, the previous owner didn’t either, and if you’re already in there you might as well replace primary shoe, gasket, Primary and Cam cover hardware and Primary, derby cover gasket, check the primary tensioner and check chains for excessive slack.
1285 07+ Cam Sprocket Lock
994 for 1999-06
To replace the tensioners Need Special tool JIMS J&P Part #: 910-209 Mfr Part #: 1283 , Use On 99-06 FL, 99-05, FXD & 00-
06 FXST
Most people forget the outer chain guide OEM# 39965-99 J&P 433-484 it's on 1999-06 TC88 on the outer front.
FLST 1999-2006
FXST 1999-2006
FLT 1999-2006
FXD 1999-2005
James Gasket Kit J&P Part #: 431-176 Mfr Part #: JGI-25244-99-K
Primary Cam Chain Tensioner - 39954-99A MIDUSA:66000
Secondary Cam Chain Tensioner behind the camplate - 39964-99 J&P#433-483 MIDUSA:66002
Cometic Cam Change Gasket Kit
Mfr Part #: 3094-0128
If your on a budget Cheapo Shoes Only 99-06 OEM: 9905: TP 🧻 Mfr Part #: 9905KIT
Shoe only tool J&P Part #: 753-881 Mfr Part #: 9905T
For 2006 dyna and 2007-2016 FL Touring 07-17 Hydraulic Tensioners only: OEM: 9906 J&P Part #: 753-880 Mfr Part #: 9906KIT If you have 40K miles on your tensioner assemblies at least replace them
Fueling Tensioners:J&P Part #: 10026823 Mfr Part #: 8077
S&S Tensioners:J&P Part #: 832-935 Mfr Part #: 330-0518
Twin Cam Performance Kits 1999-2006 - Update to Hydraulic tensioners before your spring ones let you down they fail most often after 30,000 miles and hydraulic are known to fail after 40k miles, replace tensioners and

Twin Cam Performance Kits 1999-2006 - Update to Hydraulic tensioners before your spring ones let you down.
make sure the cam plate isn't bowed which is common with the sandcast oem plates when your just replacing shoes,and even you're on a budget it’s probably wise to check your oil pump gear rotors for wear and have one on standby for replacement and most likely it will be worn from its entire life riding on the out of true crankshaft, better to replace a 150 oil pump than pay for a 250 tow to do the same thing all over again.
07-17 Twin Power Mfr Part #: 87077
99-06 Twin power Mfr Part #: 87076
You must check crankshaft runout before making any cam or performance choices. Also keep in mind before you install any performance products as a installer this is your responsibility to calculate and check
Coil bind, Valve to valve clearance, and valve to piston clearance with the Grind, open, close, duration/s, valve lift, lift @ TDC
So that way you don't have a piston kiss your valve and then that's all she wrote.
https://www.feulingparts.com/sku/9015 Runout gauge
https://www.jpcycles.com/product/910-...
Chain drives also give much more leeway of crankshaft runout, this is the biggest factor when choosing chain or gear drive setup your crankshaft must have less than .003 Thousandths runout on crankshaft axis, .012 thousandths is Harley’s serviceable limit for Crankshaft altogether, So before you think big cam you might be thinking big bottom end and built heads. Darkhorse crankworks are the best, if you're not going to replace your main crank bearing and have your crank trued, don't want excessive gear drive sound, chain drive is the way to go.
If you really care for your bike or your customer wants a bulletproof upgraded setup you can install or build your own Hydraulic Conversion kit. Which in short means You can Convert 1999-2006 Spring tensioners to hydraulic with Screaming Eagle conversion cam plate/oil pump and Andrews conversion cam combo or Fueling kits are popular because of their price point and inclusivity of all the parts required.
Oe+ - 600-1418 Mfr Part #: 7090
525 - Mfr Part #: 7320
543 Conversion - Mfr Part #: 7322
574-0925-1282 Fuelling SKU: 7324
Please remember Whenever you replace cams, always swap inner cam bearings, even as a safety measure it would be wise, you absolutely don’t want one of these little rollers to seize up, to then seize your new entire cam chest
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