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Harley-Davidson Big Twin Evolution and Twin Cam Edelbrock/ JE Sport INSTALLATION INSTRUCTIONSsman Pistons

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Filed Under (Harley Davidson) by admin on 07-02-2011

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INSTALLATION PROCEDURE Note: All Evolution® “Big Twin” pistons are marked “Front” or “Rear” and come with rings, wrist pins, and locks. • Note: We highly recommend that a dealer or trained mechanic perform the installation of these pistons. Specialized equipment is required for honing and finishing the cylinders to ensure long life of the piston and cylinder assembly. 1. Remove original equipment cylinders from engine. Refer to a shop manual or other reference book for specific steps, if needed. (Note: Care should be taken not to bend the studs or damage the cylinder during removal of the cylinders.) 2. With a small screwdriver, move the wrist pin retainer around to gain access to the tail of the retainer as it lines up with the notch in the bottom of the wrist pin hole. 3. Use a small screwdriver, pick or awl to roll the wrist pin retainer out of its groove. 4. Push wrist pin out and remove piston. 5. Repeat procedure for the other piston. 6. At this point, take cylinders, new pistons, and piston-to-wall clearance specifications to your dealer or machine shop to perform necessary machining operations. • IMPORTANT NOTE (Evolution® and Twin Cam®): The cylinder bore must be machined/honed to provide .0025″ of piston-to-wall clearance. Measure the piston diameter at a point .500″ up from the lower skirt (See Figure 3). 7. Starting with the front cylinder, install new piston rings and one wrist pin retaining clip (Note: Second ring has a dot which must face up when the ring is installed) . 8. Place the piston over the conecting rod, making sure that the intake valve pocket is towards the intake side. (For Evolution ® , see Figure 1. For Twin Cam ® , see Figure 2) . Coat the wrist pin with engine oil and insert it into the piston. Install the second wrist pin retainer into the groove. 9. Lightly coat the piston skirt with engine oil. Place a piston ring compressor over the piston/ring assembly and compress. Place the cylinder over the piston and gently push down until all rings are in the cylinder. Remove the ring compressor, and push the cylinder the rest of the way down. (Note: Be careful not to get oil onto the base gasket.) 10. Place two nuts and washers on opposite corners of the #1 cylinder to hold it down while you repeat the procedure for cylinder #2. 11. Assemble the rest of the engine per factory specifications. Start the engine and let it run at 2000 rpm for about 10 minutes.

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Harley-Davidson Twin Cam Engines Cam Chain Drive System Installation and removal MANUAL

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Filed Under (Harley Davidson) by admin on 27-03-2012

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Removing the Cam Chain Drive System. NOTES Changing camshafts and cam drives in the 2006-up Harley-Davidson® Twin Cam 88® engines is different than in pervious engines. Procedures require use • of some special tools. Installation should be done by an experienced mechanic with access to factory service manual and required tools. Tighten all fasteners to the correct specifications and in order described. Always use an accurate torque wench. • Incorrect installation can cause engine damage not covered under warranty. CAUTION Failure to install components correctly can result in sudden engine seizure. Engine seizure may result in serous injury to motorcycle operator, passenger, or others. A- Disconnect the battery ground cable to eliminate potential sparks and inadvertently engagement of the starter while working on the motorcycle. B- Remove spark plugs and pushrod cover clips. Collapse the pushrod covers to expose the pushrods. C- Safely elevate and stabilize the rear of the motorcycle. Place the transmission in high gear. Turn the rear wheel to rotate the engine until both lifters and pushrods for either cylinder are at the lowest point on the camshaft (TDC of compression stroke). Both intake and exhaust pushrods for that cylinder will be under pressure from the valve springs and will rotate with light finger pressure. NOTE: 510G camshafts may use stock style non-adjustable pushrods instead of adjustable pushrods. If installing non-adjustable pushrods, disassemble and assemble rocker boxes per H-D® instructions. All other S&S® gear driven cams require installing adjustable pushrods. As a time-saving measure, the stock pushrods can be removed with bolt cutters. Be sure to head caution and warnings of these instructions. D- Cut the pushrods for the cylinder that is at TDC with the bolt cutter and remove the pushrod covers from the engine. Rotate the engine to place the pushrods for the other cylinder at their lowest point. Cut and remove the remaining pushrods. WARNING CAUTION Cutting pushrods with a saw or cutoff wheel may result in debris entering the engine, causing engine damage not covered under warranty. WARNING Cutting pushrods without releasing spring pressure, by rotating the engine until tappets are at the lowest point of travel can result in bodily injury. E- Remove the pushrod covers and lifters form the crankcase. F- Remove engine cam cover and gasket. Secure lifers with a tool made from a large binder clip

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Yamaha YZ400/426F Camshafts REMOVAL AND INSTALLATION MANUAL

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Filed Under (Yamaha) by admin on 01-01-2012

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Cleanliness is always a good place to start. Make sure the motorcycle is cleaned thoroughly before you start. It would be advisable to use an engine degreaser on the frame and the engine. This will ensure a clean engine during the assembly process and less of a chance of thread damage and/or dirt contamination in the engine during reassembly. And as always, replace any fiber-based gasket that was moved in any way, i.e.: cam chain tensioner. You will need basic hand tools and a torque wrench, machine towels (rags), some cleaning solvent, and a cam chain tensioner gasket. And the Hot Cams’ Degree Wheel Kit if you so desire. We will start by removing the tank and seat, top engine mount, and the cam cover. Remove the crankshaft cap and timing hole cap on the left engine case cover. Remove the spark plug. Rotate the engine in a counter clockwise (CCW) direction. Position the engine on top dead center (TDC) using the mark on the flywheel or better yet a degree wheel using a positive stop. Be sure to notice that the intake valves were the last to move, this will ensure the engine of being on “true” TDC. True top dead center occurs when both the intake and exhaust valve are closed when the piston is at TDC. This is technically the end of the compression stroke and the Page 1
beginning of the power stroke. The “artificial” TDC is during the overlap when both the intake and exhaust valves would be open. Note the positioning of the cam lobes (their included angle will be close to 170 degrees), this will help during the installation of your new Hot Cams camshafts Remove the cap bolt on the end of the cam chain tensioner block, be aware of the copper washer. Release the spring tension on the cam chain tensioner by turning the flat blade screw slot inside the adjuster block in a clockwise (CW) direction; it will lock in the retracted position. Remove the two 8mm headed bolts that hold the cam chain tensioner to the cylinder block. Remove and discard the gasket. Remove the 4 bolts that hold the exhaust cam cap in place, lift the cam cap off. It may be necessary to pry very lightly on the cap to lift it off its dowel pins. Do not use the cam lobes as the pry point. Be careful not to drop the dowels and also be careful to not lose the half moon shaped retainer for the bearing under the cam cap. Remove the 6 bolts that secure the intake cam cap and lift the cam cap off the camshaft, again, be careful to not drop the retainer or dowels. Lift the intake camshaft out of its pocket in the cylinder head casting. Remove the cam chain from the sprocket, set the stock camshaft aside. Lift the exhaust camshaft out of its pocket in the cylinder head casting and remove the chain from the sprocket. Do not drop the cam chain, dangle it over the side of the engine while keeping slight upward pressure on the chain to maintain its position on the drive sprocket on the crankshaft

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S&S Super Stock Cylinder Head Kit Installation Instructions for 1984 And Later Evolution Big Twin and Sportster Engines

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Filed Under (Harley Davidson) by admin on 28-11-2010

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check Piston Alignment in Cylinder Bore The purpose of this procedure is to check for and correct possible piston misalignment in the cylinder bore. During normal manufacturing, engine components such as crankcases, cylinders, and connecting rods can be machined to dimensions within factory specifications but on the extreme ends of the tolerance range. Sometimes these components when combined together form an assembly that is borderline or actually “out of print”. The worst result is that the pistons can run cocked in the cylinder bores causing the connecting rods to thrust to the sides exerting unnecessary stress on the pistons, rings, rod bearings and other related parts. This procedure is not the same as “blue printing”, but it provides almost the same result. We feel that not enough emphasis is given to checking the piston alignment in the cylinder bore. NOTE – All engines should be checked upon disassembly. This applies to any engine receiving new pistons which includes those being completely overhauled. CAUTION – Pistons which do not run true in cylinder bores may cause excessive connecting rod side thrusting. This may lead to premature ring, piston, connecting rod and rod bearing wear and eventual failure of these parts. Visual Procedure A. Reinstall cylinders on old pistons without rings. Hold cylinders securely in place. B. Move piston tight toward camside of engine. C. Turn engine over in normal direction of travel 2 or 3 revolutions and observe piston during process. D. Move piston toward driveside of engine and repeat Step C. If misalignment exists, piston will appear closer to cylinder wall at one point around circumference. Condition can be corrected by bending rod in opposite direction. Figure 1 shows an exaggerated side view. E. Repeat Steps B to D for other cylinder. F. Remove pistons and cylinders. Observe pistons for wear spots on sides above top compression ring. If either side near wristpin is worn clean while side opposite is carboned up, then piston was not running straight and true in cylinder bore. Piston will also generally show diagonal wear pattern on thrust faces of skirts and possibly signs of connecting rod to wristpin boss contact inside piston.

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Yamaha YZ 250F Camshafts REMOVAL AND INSTALLATION MANUAL

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Filed Under (Yamaha) by admin on 30-12-2011

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Remove the 4 bolts that hold the exhaust cam cap in place, lift the cam cap off. It may be necessary to pry very lightly on the cap to lift it off its dowel pins. Do not use the cam lobes as the pry point. Be careful not to drop the dowels and also be careful to not lose the half moon shaped retainer for the bearing under the cam cap. Remove the 6 bolts that hold the intake camshaft cap and lift the cam cap off the camshaft, again, be careful to not drop the retainer or dowels. Lift the intake camshaft out of its pocket in the cylinder head casting. Remove the cam chain from the sprocket, set the stock camshaft aside. Lift the exhaust cam out of its pocket in the cylinder head casting and remove the chain from the sprocket. Do not drop the cam chain, dangle it over the side of the engine while keeping slight upward pressure on the chain to maintain its position on the drive sprocket on the crankshaft. Fit the half moon shaped retainers in the grooves of the Hot Cams camshaft bearings to ensure good fit, set retainers aside for the time. Using assembly lube, lube the shim buckets, bearing surfaces for the camshafts in the cylinder head, and pack some in the camshaft bearings. Set the exhaust cam into the cylinder head casting while at the same time fitting the cam chain over the sprocket. Make sure that you keep all the cam chain slack to the back of the engine. The cam chain pulls the camshaft sprockets in a counter clockwise direction and the slack of the chain must be kept on the cam chain tensioner side of the engine. The exhaust cam has two timing marks on it. When correctly installed one mark will be at the 9 o’clock position and the other mark will be at the 12 o’clock position. When correctly timed the mark at 9 o’clock will be aligned with the valve cover gasket surface. Repeat the above process for the intake camshaft. Again, make sure you keep the chain slack to the cam chain tensioner side of the engine. Check to be sure the crankshaft is still at TDC. The intake cam has two timing marks also. One at 12 o’clock and the other at 3 o’clock. When both cams are installed correctly, the valve cover gasket surface will form a straight line through the exhaust timing mark at 9 o’clock and the intake timing mark at 3 o’clock

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HARLEY DAVIDSON HYBRID CAM PLATE AND HIGH FLOW OIL PUMP KIT REMOVAL AND INSTALLATION INSTRUCTIONS

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Filed Under (Harley Davidson) by admin on 07-02-2011

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REMOVAL To prevent accidental vehicle start-up, which could cause death or serious injury, disconnect battery cables (negative (-) cable first) before proceeding. (00307a) Disconnect negative (-) battery cable first. If positive (+) cable should contact ground with negative (-) cable connected, the resulting sparks can cause a battery explosion, which could result in death or serious injury. (00049a) 1. Refer to the service manual and follow the instructions to remove the seat and disconnect the battery cables, negative (-) cable first. Retain all seat mounting hardware. Gasoline can drain from the carburetor fuel line when disconnected from fuel valve fitting. Gasoline is extremely flammable and highly explosive, which could result in death or serious injury. Wipe up spilled fuel immediately and dispose of rags in a suitable manner. (00256a) NOTES Installing this kit requires removal and installation of the cam support plate. Refer to the service manual for instructions with the following exception pertaining to cam compartment compo- nents: The crank and primary cam sprocket flange bolts are specially hardened, and the flat washers are of a special diameter and have ground surfaces. Use ONLY the parts provided in the Drive Gear Retention Kit (H-D Part Number 25533-99A, sold separately) when installing this kit. -J04804 1 of 7
The cr ank sprocket flange bolts and pr imary cam sproc ket flange bolts ARE NOT interchangeable. 2. Refer to the service manual to remove and discard the crank sprocket flange bolts and primary cam sprocket flange bolts and washers. 3. For 1999 models only: Refer to the service manual to remove and discard the currently installed cam drive sprocket. 4. Refer to the service manual to remove and disassemble the cams from the support plate and oil pump. Discard the support plate and oil pump. 5. For 1999 – 2000 Dyna, 2000 Softail, 1999 – 2000 Touring, and 2001 EFI Touring models only: Inspect the cams, chain, sprockets and chain tensioners for wear, and replace as needed. Refer to the service manual for inspection and replacement procedures. For 2001 – 2005 Dyna, 2001 – 2006 Softail, 2002 – 2006 Touring, and 2001 carbureted Touring models only: Inspect the cams and secondary cam chain for wear, and replace as needed. Refer to the service manual for inspection and replacement procedures. The primary cam chain, primary sprockets and both tensioners will be replaced by new components from the kit. For ALL models and years: Discard the guide, as it will not be used. INSTALLATION 1. ALL models: See Figure 1. Obtain the new Rear Cam Roller Bearing Kit (H-D Part Number 8983) from inside the Cam Service Kit (H-D Part Number 17045-99C, purchased separately), and install as indicated in Step 2. NOTE See Figure 2. If not enough of the splined shaft is exposed to install the sprocket, omit the spacer (4) and proceed to Step 2e. When the bearing inner race is started onto the machined area, remove the flange bolt (5), flat washer (6) and sprocket, then assemble using the spacer (4). Repeat Step 2e to fully install bearing inner race. To center thrust washer, be sure o-ring is installed in relief groove. Damage to bearing cage and engine can occur if thrust washer is not centered. (00473b) 2. See Figure 1. Install the O-ring (5), thrust washer (4) and bearing inner race (3) onto the rear camshaft as follows: a. See Figure 2. To properly locate the thrust washer (2), install the O-ring (3) in the grinding relief groove on the splined end of the rear camshaft between the machined area and the secondary cam sprocket.

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Harley-Davidson Twin Cam Engines Performer RPM Gear Drive Camshaft Kit INSTALLATION PROCEDURE

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Filed Under (Harley Davidson) by admin on 03-03-2012

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1. Disconnect the battery, and remove the fuel tank. 2. On engines with the oil tank above the engine, drain the engine oil. 3. Remove the front exhaust pipe to clear the Cam Housing Cover. 4. Remove the Rocker Covers and remove the four 5/16″ bolts and the two 1/4″ bolts holding the rocker arms in place. With the rocker arms removed, remove the stock pushrods. 5. Remove the push rod tube retaining clips and push rod tubes. 6. At this point, you may remove the lifter covers and take the lifters out, or you can make a lifter holding tool from a binder clip as shown in Figure 1 INSTALLATION PROCEDURE 1. Disconnect the battery, and remove the fuel tank. 2. On engines with the oil tank above the engine, drain the engine oil. 3. Remove the front exhaust pipe to clear the Cam Housing Cover. 4. Remove the Rocker Covers and remove the four 5/16″ bolts and the two 1/4″ bolts holding the rocker arms in place. With the rocker arms removed, remove the stock pushrods. 5. Remove the push rod tube retaining clips and push rod tubes. 6. At this point, you may remove the lifter covers and take the lifters out, or you can make a lifter holding tool from a binder clip as shown in Figure 1 . 7. On pre-2000 models with a cam position sensor, you may want to remove the inspection cover, unplug the wires, and remove the sensor at this time to ease installation later on. 8. Remove the cam housing cover keeping the bolts in a separate cup. ( Note: Oil will run out of the cam housing.) 9. Using the Chain Tensioner Unloader Tool, unload pressure on the outside chain tensioner, and pin it in place with the retaining pin (See Figure 2) .

KAWASAKI 1700cc Liquid-Cooled V-Twin Engine 6-Speed Transmission with Overdrive

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Filed Under (Kawasaki) by admin on 13-12-2010

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Kawasaki’s first production bagger model is ready to take the street by force. The new Vulcan® 1700 Vaquero™ motorcycle combines the authority of a massive 1700cc liquid-cooled V-Twin engine together with low-slung, streetwise styling of a frame-mounted front cowling and lower chin fairing, sleek side-opening hard bags, and a choice of stealthy Ebony or fiery Candy Fire Red monotone paint. Besides its unmistakable style, the Vaquero also includes a smooth-shifting 6-speed overdrive transmission, cruise control, a full-feature audio system, and a host of custom-designed accessories. Get ready to rumble. 1700cc Liquid-Cooled V-Twin Engine The Vulcan 1700 Vaquero’s 1700cc V- Twin bristles with low-rpm torque, ensuring immediate and potent acceleration. 6-Speed Transmission with Overdrive With its overdrive top gear, the Vaquero’s 6-speed transmission teams up with the V-Twin engine for a relaxed highway cruising experience. Frame Mounted Front Cowling Muscular front cowling features a cut-down windscreen for a minimalist look and uninterrupted airflow, and is frame-mounted for light handling. Side-Opening Hard Bags Holding an impressive 9.2 gallons of storage apiece, the side bags integrate neatly into the Vaquero™’s smooth, clean lines. Electronic Cruise Control Conveniently located on the right handlebar, the Vaquero’s standard electronic cruise control precisely maintains speeds between 30 and 85 mph. Full-Feature Audio System High-fidelity audio system features AM/FM and weather radio, and is can be accessorized with iPod players, XM Radio and CB radios. Multi-Function LCD Instrumentation Located on the Vaquero’s stylish “muscle car” inspired dashboard, the multi-function LCD instrumentation clearly organizes and presents all essential information.
Engine Four-stroke, liquid-cooled, SOHC, four valve per cylinder, 52° V-twin Displacement 1,700cc / 103.7ci Bore X Stroke 102 x 104mm Compression Ratio 9.5:1 Maximum Torque 108 lb-ft @ 2,750 rpm Cooling System Liquid, plus cooling fins Ignition TCBI with Digital Advance Induction Digital fuel injection, dual 42mm throttle bodies Transmission 6-speed with overdrive and positive neutral finder Frame Type Steel, double-cradle with box-section single-tube backbone Rake/Trail 30° / 7.0 in. Front Suspension / Wheel Travel 45mm hydraulic fork / 5.5 in. Rear Suspension / Wheel Travel Swingarm with twin air-assisted shocks, with 4-way rebound damping / 3.1 in. Front Tire Size 130/90×16 Rear Tire Size 170/70×16 Brakes, Front / Rear Dual 300mm discs, dual twin-piston calipers / Single 300mm disc, twin-piston caliper Overall Length 98.8 in. Overall Width 38.2 in. Overall Height 50.8 in. Seat Height 28.7 in. Curb Weight 835.7 lbs.** Wheelbase 65.6 in. Fuel Capacity 5.3 gal. Color Choices Ebony, Candy Fire Red Warranty 36 months Good Times™ Protection Plan 12, 24 or 36 months ** Curb weight includes all necessary materials and fluids to operate correctly, full tank of fuel (more than 90-percent capacity) and tool kit (if supplied

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HARLEY DAVIDSON SCREAMIN' EAGLE TWIN CAM 103 (1690 CC) CONVERSION KIT INSTALLATION MANUAL

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Filed Under (Harley Davidson) by admin on 19-02-2011

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REMOVAL When servicing the fuel system, do not smoke or allow open flame or sparks in the vicinity. Gasoline is extremely flammable and highly explosive, which could result in death or serious injury. (00330a) 1. Remove maxi-fuse. Refer to MAXI-FUSE INSTALLATION in Service Manual. 2. Remove existing air cleaner assembly. Discard filter element, backplate, and air cleaner cover insert but save remaining parts. Refer to AIR CLEANER REMOVAL in Service Manual. 3. Remove existing exhaust system. Discard mufflers but save remaining parts for kit installation. Refer to EXHAUST SYSTEM REMOVAL in Service Manual. 4. Remove engine from chassis following the instructions in the Service Manual. 5. Remove induction module. Refer to appropriate FUEL INJECTION section in Service Manual. 6. See Figure 1. Remove and save screw (with pilot sleeve) to release fuel supply tube clamp. is03165 Figure 1. Fuel Supply Tube Clamp Screw 7. See Figure 2. Pull fuel supply tube (1) from fuel rail. -J03825 1 of 10 1 2 3 3 4 is03166 1. Fuel supply tube 2. Sealing washer 3. O-ring 4. Screw (with pilot sleeve) Figure 2. Fuel Supply Tube Assembly 8. Remove sealing washer (2) and O-ring (3) from fuel supply tube. Remove second O-ring (3) from fuel rail bore. Discard sealing washer and O-rings. 9. See Figure 3. Pull fuel injectors (1) with attached fuel rail from induction module. To overcome the resistance of the bottom O-ring (2) on both fuel injectors, gently rock assembly back and forth while pulling. 10. Remove spring clips (3) from fuel injectors. Pull fuel injectors from fuel rail. To overcome the resistance of the top O-ring (4) on both fuel injectors, gently rock assembly back and forth while pulling. 11. Disassemble engine top end, engine bottom end, crankcase, and crankshaft. Refer to appropriate ENGINE sections in Service Manual. 1 2 4 3 is03167 1. Fuel injector 2. O-ring, bottom 3. Clip, spring 4. O-ring, top Figure 3. Fuel Injector Assembly INSTALLATION Inspect Cam Clearance A clearance problem between the new cam lobe and crankcase housing may exist on certain older model engines. Failure to maintain proper clearance could result in severe engine damage. (00391b) 1. See Figure 4. Prior to starting assembly procedures, insert new cams from kit into inner needle bearings (1) located in the right side crankcase and check for a minimum of 0.030 in. clearance between highest lift point of cam lobes and crankcase housing (2) with feeler gauges. NOTE If inadequate clearance is detected, crankcase housing must be machined to provide 1.060 in. Radius clearance from center of each cam bearing bore. After machining, recheck for minimum of 0.030 in. clearance

Daytona 675 Motorcycle Race Kit Installation Manual

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Filed Under (Triumph) by admin on 29-10-2010

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Remove the existing cylinder head gasket in line with the procedures detailed in the Daytona 675 service manual. 2. Fit the chosen race kit cylinder head gasket following the procedures detailed in the Daytona 675 service manual. Caution The use of the following race kit cylinder head gaskets will require changes to the fuelling settings. To alter fuelling settings a third party programmable control unit will be required. Item Description Qty 1 Head gasket (t = 0.65mm) 1 1 Head gasket (t = 0.60mm) 1 1 * Page 7 of 29 © Triumph Designs Ltd 2007. Cams, Valve Spring & Sprocket Kits Parts Supplied Camshaft Inlet Kit – A9618055 Camshaft Exhaust Kit – A9618056 Valve Spring Kit – A9618058 Camshaft Sprocket Kit – A9618057 Warning The race kit must be fitted as a complete set. If it is not fitted as a complete set a failure may result which could cause loss of motorcycle control and an accident. Caution The use of the Camshaft, Valve spring & Sprocket race kits detailed below will require changes to the fuelling settings. To alter fuelling settings a third party programmable control unit will be required. 5 5 4 1 3 2 4 3 Item Description Qty 1 Cam assy, inlet, race 1 Item Description Qty 2 Cam assy, exhaust, race 1 Item Description Qty 3 Valve spring, 14.4id, race12 Item Description Qty 4 Sprocket, camshaft, 34T 2 5 Socket head cap screw, Encapsulated, M6x10 4
Page 8 of 29 © Triumph Designs Ltd 2007. NOTE •The standard inlet cam is 9.25mm max lift and 258.50o duration. The race kit inlet cam is 9.25mm max lift and 268.74o duration. •The standard exhaust cam is 8.5mm max lift and 246o duration. The race kit exhaust cam is 8.5mm max lift and 262.21o duration. •The race kit valve spring must be used in conjunction with the standard spring platforms and retainers. The fitted length of the race springs is the same as the standard spring. 1. The race kit valve springs should be assembled in the same manner as the standard valve springs. Follow the procedure detailed in section 3 of the Daytona 675 service manual. Ensure the springs are installed with the close wound, colour coded end of the springs facing downwards, towards the piston. 2. The race kit camshafts should be assembled in the same manner as the standard camshafts. Follow the procedure detailed in section 3 of the Daytona 675 service manual. 3. The race kit cam sprockets should be mounted and secured to the camshafts using the slotted holes in the sprocket. The slotted holes allow adjustment of the valve timing. The circular holes in the sprockets are for Triumph service tool T3880102 and should not be used to mount the sprockets to the camshafts. NOTE •No timing marks are included on the race sprockets. Race engines will typically have different depths skimmed off the cylinder head and, therefore require specific individual timing. 4. The camshafts should be timed using cam degreeing equipment which typically consists of a degree wheel, pointer, dial indicator and piston stop. Optimum cam timing will depend on the exact specification of the engine, but a recommended starting point is 104o IMOP (Inlet Maximum Opening Point) and 104o EMOP (Exhaust Maximum Opening Point). 5. Always check the inlet and exhaust piston to valve clearance for the timing selected to use, before running the engine. You must ensure both clearances are adequate. As a guide, the standard nominal piston to valve clearance is 1.3mm inlet & 1.5mm exhaust

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