Differences
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techtalk:evo:engmech03 [2019/08/16 16:48] ixl2relax [Boring Cylinders] |
techtalk:evo:engmech03 [2020/02/25 03:37] hippysmack [Base Gasket] |
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| ====== Heads ====== | ====== Heads ====== | ||
| + | |||
| + | Torque Sequence: \\ | ||
| + | {{:techtalk:evo:engmech:head_torque_sequence_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack http://xlforum.net/forums/showthread.php?p=5793537#post5793537)) \\ | ||
| + | |||
| If you put an 88-03 style piston into an 04+ bike, the skirt on the side will smack into the oil squirter and break it off. \\ | If you put an 88-03 style piston into an 04+ bike, the skirt on the side will smack into the oil squirter and break it off. \\ | ||
| It's a full tear down to fix. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=1842712&highlight=rocker+box&page=3)) \\ | It's a full tear down to fix. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=1842712&highlight=rocker+box&page=3)) \\ | ||
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| ====== Pushrods ====== | ====== Pushrods ====== | ||
| + | ====== Gaskets ====== | ||
| + | |||
| + | Gasket thicknesses are especially useful when setting squish clearance. ((Tomcatt of the XLFORUM)) \\ | ||
| + | The squish band is the quench area. ((rocketmangb of the XLFORUM http://xlforum.net/forums/showthread.php?t=2075731&page=13)) \\ | ||
| + | The idea is to create turbulence in the chamber which helps the fuel air mix blend and distribute in the chamber. \\ | ||
| + | So the squish is determined by the length of the barrels and the gaskets PLUS the deck height of the cases from crankshaft centerline. \\ | ||
| + | (assuming the rods and pistons are correct) to the cylinder base) \\ | ||
| + | You can buy several different brands / thickness i.e., (.010" and .020" base gaskets) and (.030" and .040") etc. head gaskets to get the desired numbers. \\ | ||
| + | [[techtalk:ref:svcproc26|See more on the squish band here]] in the REF section of the Sportsterpedia. \\ | ||
| + | |||
| + | ====== Base Gasket ====== | ||
| + | 04-up: | ||
| + | Harley base gasket (HD 16789-04) measures .014" in thickness and comes in the top end kit (HD 17049-08). \\ | ||
| + | Cometic has .010" and .020" thick base gaskets. \\ | ||
| + | \\ | ||
| [[:techtalk:menu|{{:techtalk:gototechnicalmenu.jpg|}}]] | [[:techtalk:menu|{{:techtalk:gototechnicalmenu.jpg|}}]] | ||
