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Drippy rocker boxes don't look good on anyone's bike. Fortunately, Narcissist ex friend offers these top-notch replacement gaskets to cure that very problem. Their s… Read More. Looking for a different bike? Change bike selection. This item is currently out of stock. Sign-up to be notified when it's available. This is a new product that isn't. Pre-orders will be filled first. Their silicone bead surface promotes sealing, and they're made proudly right here in the USA.

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Harley-Davidson Engine Tools

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Search Within. View Cart Checkout. My Garage. Saved Rides Manage Rides. Add a new ride. Harley Categories.

Find Parts Fast. Select Year. Select Make. Select Model. Harley Parts back. Harley Accessories back. Tire Finder. Aspect Ratio. Rim Diameter. Tire Sizes Explained. Tire Width. Harley Tires back.

Exhaust finder. Harley Exhaust back. Helmets back. Apparel back. Featured Harley Brands View All back. Shop by Discount back. Ride Types All Ride Types.An angled parting line and easy access counter-sunk hold down screws makes for easier, in-frame removal.

One Neoprene O-ring replaces three leak-prone gaskets in the stock sets. Sputhe rocker boxes are much more rigid than stock units. Can also be used to upgrade earlier engines to top end breathing. Eccentric rocker spindles allow the use of lighter and stronger non-adjustable pushrods. A must for any engine with mechanical lifters.

CNC machined and anodized billet aluminum rocker pedestals are clearanced for any cam lift and can be used with or without OEM Breather assemblies. Fits all Harley-Davidson TC rocker boxes. Sold in sets. The same strength and rigidity as our eccentric spindle supports except designed for conventional rocker spindles.

Set of 4. E-Mail: sputhe hotmail. Sputhe name, design and related marks are trademarks of Sputhe. All Rights Reserved.

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harley twin cam rocker box removal

Sputhe was not known to me because I was not into the motorcycle racing scene. Looking forward to my next purchase from Sputhe. I was finally able to get the bike out and wow what a difference the stabilizer links make! On acceleration it doesn't feel like it's trying to kick me off any more plus the high end speed issues are gone and I can also notice a difference at low speeds.

Thanks for making a great product! Hi, l was just looking over my 04 dyna.As always, review your service manual before attempting a labor intensive job, such as this. Also, refer to your manual as you work. It is important to have a clean, safe area prepared for disassembly. The motor may be apart for at least a couple of days, especially if you are sending heads and cylinders out to a machinist. It is important to clean and lay out all of your hardware and parts in such a manner that you will be able to easily identify and remember order of reassembly.

There are a few reasons for disassembling your top end. Freshen up a motor: With high miles, a motor may have excessive carbon build up on the pistons or in the heads.

Gaskets may need to be replaced as they begin to fail and allow oil to seep past. Performance upgrade, often a rider will be looking for more horsepower and opt to build a bigger motor or build for more compression.

Cam Replacement on a Harley Davidson Twin Cam, including Pushrod Removal • J&P Cycles

You will start by removing the battery negative cable, fuel tank, and exhaust. Remove the top motor mount; including the horn assembly. In the same area; remove the fuel line and the engine temp sensor. Next, remove your air cleaner assembly, throttle cables, and carefully, unplug all of the sensor plugs at your throttle body. Now, you can remove the hardware that secures your throttle body to the heads and carefully slide the complete throttle body away from the motor.

This is very important for the single fire ignition. Loosen and remove your upper rocker box. Now is a good time to remove your spark plugs, raise your rear wheel and shift the motorcycle into high gear.

You will want to spin your rear wheel until you have reached top dead center. At this point there is the least amount of pressure on your pushrods which allows for ease of disassembly. Remove your pushrod clips.

Next, loosen and remove the two bolts that retain your breather assembly; then evenly, loosen and remove your rocker arm towers. Label the towers front and rear and set them aside. Now, you can loosen and remove your lower rocker boxes. You are now stripped down to the heads. Break them free with one sharp motion; then continue to loosen evenly in a cross pattern. Lift off your heads and remove the old head gaskets.

harley twin cam rocker box removal

Next, you can carefully slide the cylinders off of the pistons and cylinder studs. Work slowly and methodically. Focus on not allowing any debris to enter the open crank case. Label the cylinders and set aside. Now you can push clean shop towels into the openings of the crank case to protect against anything falling into your lower end, while the top end is apart.

Finally, you can remove your pistons from the connecting rods. It is important to slide short lengths of rubber hose over your cylinder studs for protection. Then, proceed by picking out the wrist pin clips and carefully tapping the wrist pins out from the connecting rods.

It is preferable to use a connecting rod holder when tapping out the wrist pins, if the tool is available to you. Harley top end overhaul is a lengthy procedure on your Twin Cam motor. You will see that a lengthy job does not necessarily make it a difficult job.Leaking rocker box gaskets were a particular problem with Harley Evolution engines.

Harley went through four generations of lower rocker covers and four versions of the middle cover, or D-Ring, as the motor company tried to solve the problem. The earliest gaskets, from towere made of cork. The next versions, which lasted untilwere made of zinc and leaked the most. Subsequent versions were rubber. Removing rocker box covers to replace the gaskets is a straightforward process. Very experienced mechanics can do the job without removing the gas tank but less experienced mechanics should probably begin this job by remove the tank.

Remove the seat bolt and washer from the tab on the rear of your seat. Remove the seat to access the battery. Loosen the negative battery cable from the terminal with a box wrench and remove the cable from the battery. Remove the center console. Typically, the center console is attached to the center console bracket with three Allen head screws. Remove the fuel line from the petcock. Typically the petcock and fuel supply are joined by a hose clamp. Loosen the hose clamp with a flat head screwdrivers.

Drain the gasoline in your tank into an adequately sized, sealable, gas can. On models with dual gas caps, disconnect the crossover and fuel venting hoses in the front, middle bottom of the tank. Remove the front mounting bolt, flat washers and acorn nut with a box wrench and socket wrench.

Remove the rear mounting bolt, flat washers and acorn nut. Disconnect the fuel gauge connector on recent models. The fuel gauge connector is under the left side of the fuel tank. Remove the gas tank from the motorcycle. Set the tank on a flat stable surface in a well vented place. Remove the six Allen bolts and washers that connect the rocker cover to the rocker assembly.Fulfillment by Amazon FBA is a service we offer sellers that lets them store their products in Amazon's fulfillment centers, and we directly pack, ship, and provide customer service for these products.

If you're a seller, Fulfillment by Amazon can help you grow your business. Learn more about the program. Your question may be answered by sellers, manufacturers, or customers who purchased this item, who are all part of the Amazon community. Please make sure that you are posting in the form of a question. Please enter a question. Don't be fooled by others that have copied my kit. My research discovered that the noise is caused by the factory's sloppy fit between the rocker shafts and the hold down bolts meant to keep them in place.

You can see the marks in the hardened bolts from the hammering in the pic above. My inserts fill that gap, locking the shafts in place, stopping the noise.

Tapered for easy installation, professionally made to exacting tolerances so each is virtually identical. Kit includes 4 inserts and a spare! Here's just one actual review from a customer on the largest online HD forum So when I had my bike in there for some work I had him install the Rockouts. The ticking is gone and when the service manager walked by my bike as it was running he stopped and said my bike was the most quiet he had ever heard.

Had the tech order some for his bike. In fact I think he said he ordered a set of I have to agree. None of my previous Harleys were this quiet. Skip to main content. Free day shipping within the U. Prices may vary for AK and HI. Return this item for free Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition and get a full refund: no shipping charges Learn more about free returns.

How to return the item? Go to your orders and start the return Select the ship method Ship it! In Stock. Add to Cart. Secure transaction. Your transaction is secure.Mike Roen has the Harley cylinders in place and is now ready to put the lower Harley rocker box on. Your gaskets are labeled front and rear.


Make sure to install correctly. Make sure to remove the old o-ring. Prep your bolts with some blue Loctite and put them in the correct allocation. You will snug then torque them. Tip: The rear cylinder has less clearance for the Harley rocker box. Install your pushrod o-rings top and bottom.

Install your pushrods in the correct location. Mike shows how to find top dead center to move forward with the install. Your gasket set should come with a new steel breather assembly. You will prep them and install into the support plate. Make sure o-rings are in place and the notch is lined up so the bolt can go through. Push rods need to be in place then snug and torque. Check it out. We will do the same on the rear cylinder once the front push rods are bleed down.

In the next video we will install the Harley rocker box covers. Bob and Mark put an older Sportster up on the lift to show you how to service the front and rear brake calipers. They teach you which parts to remove, clean and replace, and discuss the components of the single piston-style caliper assembly and how they work. Bob shares some tips on Harley battery replacement and upkeep. Sportster Maintenance can also bring comfort. Our experts also walk through proper belt services and adjustment on Harley rear shocks.

Next Video: Belt Deflection. It is strongly recommended that you remove the negative cable of the battery first and replace it last when servicing your bike.

Bob has been dealing with these batteries for years and removes the neg from the battery. If this is your first time, we highly suggest removing neg from ground stud on the crankcase boss see images with wobble extension. Remember me.

harley twin cam rocker box removal

Lost your password? Privacy Policy. LOG IN. Search for:. Become A Member. Fix My Hog Membership with automatic renewal. Subscription Select a subscription Please select from the available subscriptions above. Description Mike Roen has the Harley cylinders in place and is now ready to put the lower Harley rocker box on. Pushrods Install your pushrod o-rings top and bottom. Upgrade Your Breather Assembly Your gasket set should come with a new steel breather assembly.

harley twin cam rocker box removal

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