HARLEY DAVIDSON HIGH PERFORMANCE CYLINDER STUD KIT INSTALLATION INSTRUCTIONS

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

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This kit is designed for installation on 1986 and later XL model motorcycles. This kit is required on engines with compression ratios of 10:1 and higher. For XL 1200 engines with higher compression ratios, Screamin’ Eagle gasket kit part number 17046-98 is also recommended. Installation To protect against shock and accidental start-up of vehicle, disconnect the battery cables, negative cable first, before proceeding. Inadequate safety precautions could result in death or serious injury. Always disconnect the negative battery cable first. If the positive battery cable should contact ground with the negative cable installed, the resulting sparks may cause a battery explosion which could result in death or serious injury. 1. Disconnect the battery, negative cable first. 2. Remove top end heads and cylinders according to Service Manual instructions. Cylinder studs that are bent, scratched or broken must be replaced. Broken and bent studs distort clamp load, while scratches produce stress risers that may eventually lead to broken studs. Distorted clamp load causes head gasket leakage that may result in engine damage. Do not use a ratchet or breaker bar to install cylinder studs because they will bend the studs. 3. Remove existing cylinder studs according to Service Manual instructions. 4. Install new studs, Loctite end first. • Place a 0.313 inch DIAMETER BALL, HD Part Number 8860 (or from the XL clutch release mechanism) into the head bolt recess. Thread the stud into the head bolt until the stud bottoms on the ball. NOTE Pack clean shop towels into the crankcase openings to prevent the ball from falling into the flywheel compartment when removing the head bolt. • Clean the threads in the crankcase. • The studs have a Loctite patch on the crankcase end threads.Install the studs in the crankcase with the Loctite patch side down. • Use a T-handle to install the studs. Install studs until the free length is 4.84 ±.05 inches. See Service Manual for more detailed information. 5. Check all studs for proper height. 6. Reinstall the top end heads and cylinders according to the Service Manual Instructions

TRIUMPH 750 BIG BORE CYLINDER AND PISTON SET FOR 650 TWINS INSTALLATION

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

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Step 1. Unpack your big bore kit and inspect the contents. There should be the following: 1. Cylinder x l 2. piston with wristpin x 2 3. Hepolite piston ring set x l 4. Special big bore head gasket Step 2. Thoroughly wash the cylinder bores with soap and water. Do not use solvent! Dry bores with air or a lint free towel and let completely air dry. This step is most important and will greatly extend the life of the pistons. Step 3. Following the procedure outlined in your service manual, drain the fuel tank, remove the exhaust system, fuel tank and carburetors. Have a catch basin handy to capture any fuel that may spill from the carburetors, as fuel is highly flammable and can be ignited by a dryer pilot light etc. from a long distance. Clean up any spilled fuel immediately and dispose of away from any source of ignition. Store the fuel tank in a well vented area, outdoors is best, in the event your fuel taps should leak. Step 4. Remove the rocker boxes by slacking the 9 head bolts a little at a time in a star pattern. Remove the 6 nuts at the front and back of the head. Remove the 4 corner rocker box bolts. Remove the head bolts and rocker boxes. Remove the push rods. Examine the push rods to insure they are straight and the ends are tight. Replace any suspect push rod. Step 5. Remove the cylinder head. Now would be a good time for guide and valve renewal. This is best left to an expert. More cylinder heads have been ruined by auto machine shops than by hard use. If you do not have a qualified shop in your area please call for a referral. Step 6. Remove the push rod tubes and the cylinder base nuts. Clip rubber bands around the top of the lifters to keep them from dropping into the crankcase. Have a few lint free rags handy. Bring the pistons to the top of the stroke and begin lifting off the cylinder. If the cylinder is hard to lift off, thread a nut on one of the base studs and use a tire lever to pry against the bottom fin close to its base using the stud as a fulcrum. After partially raising the cylinder stuff the crankcase mouth with rags to keep any carbon or broken rings from entering the crankcase. These will remain in place until step 12. Step 7. Leaving the rags in the crankcase remove the wrist pin circlips from the pistons and discard. Heat the piston and gently push the wrist pin out. Do not use force as this can damage the connecting rod or its bearings. Be sure to account for all the clips as one left in the crankcase can do extensive damage. Step 8. Clean all gasket surfaces to remove any traces of the old gaskets. Use Pennatex gasket remover if needed. Be very careful not to scratch the gasket surface or to allow any gasket particles to enter the crankcase. Even a small bit of gasket can stop the oil pump from working! Step 9. Note the direction and location of the lifters. These must be replaced in the same position as when removed. Remove the lifter blocks from the old cylinder. Start by removing the small retaining bolts and washers. The lifter blocks are extremely fragile and are easily broken. They are also very expensive so great care must be taken in this step! Triumph special tool 222-616008 is advisable here. Apply pressure to the center of the block only. Do not press against the tangs that locate the lifter! A tool can be fabricated using two dowels to locate in the lifter holes. Step 10. Clean and examine the lifters and camshaft faces. Clean the lifter blocks and remove the sealing oring under the locating flange. Replace these with the new orings in the gasket set. Apply a smear of gasket sealant to the lifter block oring and press into the new cylinder. Be sure the lifter block is parallel with the bores and the grooved block is on the exhaust side. Apply a small amount of assembly oil to the lifters and replace in the exact position they came from

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