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techtalk:ref:engmech02 [2020/03/03 01:03] hippysmack [Base Gaskets] |
techtalk:ref:engmech02 [2024/01/14 20:53] (current) hippysmack |
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| ====== Top End ====== | ====== Top End ====== | ||
| * [[techtalk:ref:engmech02d|Measure the Volume of a Combustion Chamber]] (CCing your chamber) | * [[techtalk:ref:engmech02d|Measure the Volume of a Combustion Chamber]] (CCing your chamber) | ||
| + | |||
| ====== Heads ====== | ====== Heads ====== | ||
| Line 10: | Line 11: | ||
| - | ====== Valves ====== | + | ====== Cylinders ====== |
| + | |||
| + | ====== Rings ====== | ||
| + | * [[techtalk:ref:engmech02c|Ring Gap Orientation]] | ||
| + | |||
| ====== Pistons ====== | ====== Pistons ====== | ||
| Line 16: | Line 22: | ||
| * [[techtalk:ref:engmech02e|Removing / Installing Piston Rings]] | * [[techtalk:ref:engmech02e|Removing / Installing Piston Rings]] | ||
| - | CP pistons is who makes the pistons for both NRHS and Hammer. ((NRHS Sales of the XLFORUM http://xlforum.net/forums/showthread.php?t=1409240&highlight=piston+pin+clips&page=12)) \\ | + | CP pistons is who makes the pistons for both NRHS and Hammer. ((NRHS Sales of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/132291-awsracing-please-rely-looking-for-advice/page12?t=1409240&highlight=piston+pin+clips&page=12)) \\ |
| But they are not the same pistons as they each have them made to their own specs. \\ | But they are not the same pistons as they each have them made to their own specs. \\ | ||
| - | CP is a custom piston manufacturer like Ross and others. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=1409240&highlight=piston+pin+clips&page=13)) \\ | + | CP is a custom piston manufacturer like Ross and others. ((aswracing of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/132291-awsracing-please-rely-looking-for-advice/page13?t=1409240&highlight=piston+pin+clips&page=13)) \\ |
| They have a standard line but they also make pistons to their customers' specs. \\ | They have a standard line but they also make pistons to their customers' specs. \\ | ||
| - | |CP piston from Hammerperf.com. Two wrist pin oilers \\ per side, plus a groove to spread it around. ((photo by aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=1409240&highlight=piston+pin+clips&page=13))| | + | |CP piston from Hammerperf.com. Two wrist pin oilers \\ per side, plus a groove to spread it around. ((photo by aswracing of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/132291-awsracing-please-rely-looking-for-advice/page13?t=1409240&highlight=piston+pin+clips&page=13))| |
| |{{:techtalk:ref:engmech:cp_piston_by_aswracing.jpg?direct&300|}}| | |{{:techtalk:ref:engmech:cp_piston_by_aswracing.jpg?direct&300|}}| | ||
| Line 32: | Line 38: | ||
| These keep the wrist pin from coming out of the piston and scraping the cylinder walls. \\ | These keep the wrist pin from coming out of the piston and scraping the cylinder walls. \\ | ||
| - | Pins coming out of pistons is an enormously rare event. ((aswracing of the XLFORUM http://xlforum.net/forums/showthread.php?t=1409240&highlight=piston+pin+clips&page=12)) \\ | + | Pins coming out of pistons is an enormously rare event. ((aswracing of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/132291-awsracing-please-rely-looking-for-advice/page12?t=1409240&highlight=piston+pin+clips&page=12)) \\ |
| However, if the retainers are not installed properly, they will come out. \\ | However, if the retainers are not installed properly, they will come out. \\ | ||
| CP, in previous years, had some issues with the manufacturing of the pistons. \\ | CP, in previous years, had some issues with the manufacturing of the pistons. \\ | ||
| Line 39: | Line 45: | ||
| Below is a cylinder that had a wrist pin retainer come loose. \\ | Below is a cylinder that had a wrist pin retainer come loose. \\ | ||
| - | {{:techtalk:ref:engmech:wrist_pin_damage_to_cylinder_by_tt60.jpg?direct&300|}} ((photo by TT60 of the XLFORUM http://xlforum.net/forums/showthread.php?t=1409240&highlight=piston+pin+clips&page=10)) | + | {{:techtalk:ref:engmech:wrist_pin_damage_to_cylinder_by_tt60.jpg?direct&300|}} ((photo by TT60 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/132291-awsracing-please-rely-looking-for-advice/page10?t=1409240&highlight=piston+pin+clips&page=10)) |
| ===== Wrist Pin Lock Rings ===== | ===== Wrist Pin Lock Rings ===== | ||
| These circlips are used with wrist pins that have a chamfer on the ends. \\ | These circlips are used with wrist pins that have a chamfer on the ends. \\ | ||
| - | The theory is that the chamfered edge on the wrist pin should push the round circlip into its groove when pushing on it. ((norseXL of the XLFORUM http://xlforum.net/forums/showthread.php?t=1409240&highlight=piston+pin+clips&page=11)) | + | The theory is that the chamfered edge on the wrist pin should push the round circlip into its groove when pushing on it. ((norseXL of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/132291-awsracing-please-rely-looking-for-advice/page11?t=1409240&highlight=piston+pin+clips&page=11)) |
| |{{:techtalk:ref:engmech:piston_pin_lock_ring_comparison_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:piston_pin_lock_ring_22589-83b_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:engmech:piston_pin_lock_ring_for_cp_pistons_by_hippysmack.jpg?direct&300|}}| | |{{:techtalk:ref:engmech:piston_pin_lock_ring_comparison_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:piston_pin_lock_ring_22589-83b_by_hippysmack.jpg?direct&300|}}|{{:techtalk:ref:engmech:piston_pin_lock_ring_for_cp_pistons_by_hippysmack.jpg?direct&300|}}| | ||
| Line 49: | Line 56: | ||
| Teflon or nylon buttons can be used instead of circlip retainers. \\ | Teflon or nylon buttons can be used instead of circlip retainers. \\ | ||
| However, the pistons have to be designed for their use. \\ | However, the pistons have to be designed for their use. \\ | ||
| - | |Nylon buttons take the place of the retainer rings. ((photo by fdny37 of the XLFORUM http://xlforum.net/forums/showthread.php?t=204460&highlight=piston+pin+clips&page=2))|They can be ordered along with the pistons. ((photo by TT60 of the XLFORUM http://xlforum.net/forums/showthread.php?p=3858110&highlight=piston+pin+clips))| | + | |Nylon buttons take the place of the retainer rings. ((photo by fdny37 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/49853-wrist-pin-retaining-clips/page2?t=204460&highlight=piston+pin+clips&page=2))|They can be ordered along with the pistons. ((photo by TT60 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/132291-awsracing-please-rely-looking-for-advice/page8?highlight=piston+pin+clips#post2829317))| |
| |{{:techtalk:ref:engmech:wrist_pin_buttons_by_fdny37.jpg?direct&300|}}|{{:techtalk:ref:engmech:wrist_pin_buttons_by_tt60.jpg?direct&300|}}| | |{{:techtalk:ref:engmech:wrist_pin_buttons_by_fdny37.jpg?direct&300|}}|{{:techtalk:ref:engmech:wrist_pin_buttons_by_tt60.jpg?direct&300|}}| | ||
| - | ====== Rings ====== | ||
| - | * [[techtalk:ref:engmech02c|Ring Gap Orientation]] | ||
| ====== Pushrods ====== | ====== Pushrods ====== | ||
| Line 71: | Line 76: | ||
| ====== Pushrod Tubes ====== | ====== Pushrod Tubes ====== | ||
| - | ===== Hammer Performance Billet Base Kit ===== | + | ===== Pushrod Base Upgrade Kits ===== |
| + | |||
| + | For 1991-2003 Sportster and 1991-2002 Buell (except Blast):\\ | ||
| + | The stock lower pushrod tube retainer on a 1991-2003 Sportster is a cheapo piece of pot metal that bends and distorts, causing leaks. | ||
| + | |||
| + | ==== Hammer Performance Billet Base Kit ==== | ||
| * [[techtalk:ref:engmech02f|Installing Hammer Performance Billet Pushrod Base Kit]] | * [[techtalk:ref:engmech02f|Installing Hammer Performance Billet Pushrod Base Kit]] | ||
| - | Fits 1991-2003 Sportster and 1991-2002 Buell (except Blast). \\ | + | ((http://www.hammerperf.com/xlvalvetrain.shtml#billetbases)) \\ |
| - | The stock lower pushrod tube retainer on a 1991-2003 Sportster is a cheapo piece of pot metal that bends and distorts, causing leaks. ((http://www.hammerperf.com/xlvalvetrain.shtml#billetbases)) \\ | + | |
| - | These pushrod tube bases are stronger than the stock parts replace the cheap stock pushrod bases using your stock pushrod tubes. \\ | + | These Hammer Performance pushrod tube bases are stronger than the stock parts and replace the cheap stock pushrod bases, but use your stock pushrod tubes. \\ |
| They are CNC machined by Hammer Performance out of T6061 billet aluminum. \\ | They are CNC machined by Hammer Performance out of T6061 billet aluminum. \\ | ||
| Each kit comes with two bases, the upper o-rings, the lower seals, and four stainless steel screws. \\ | Each kit comes with two bases, the upper o-rings, the lower seals, and four stainless steel screws. \\ | ||
| {{:techtalk:ref:engmech:hammerperf_pushrod_bases_1_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) {{:techtalk:ref:engmech:hammerperf_pushrod_bases_2_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) | {{:techtalk:ref:engmech:hammerperf_pushrod_bases_1_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) {{:techtalk:ref:engmech:hammerperf_pushrod_bases_2_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) | ||
| + | |||
| + | ==== Zippers Billet Base Kit ==== | ||
| + | |||
| + | Zipper's Performance also makes pushrod tube bases that use the stronger billet aluminum to replace the cheap stock pushrod bases. | ||
| + | |||
| + | The bases are available as standalone parts (with lower seals) or as kits that include new telescoping pushrod covers. | ||
| + | |||
| + | {{:techtalk:ref:engmech:zippers-pushrodbase.jpg?direct&300|}} ((photo by Sportsterpaul)) | ||
| ====== Aftermarket Rocker Arms ====== | ====== Aftermarket Rocker Arms ====== | ||
| - | Roller rockers can't do anything __but__ help the valve train. ((mikeLI_77 of the XLFORUM http://xlforum.net/forums/showthread.php?t=2072095&page=3)) \\ | + | Roller rockers can't do anything __but__ help the valve train. ((mikeLI_77 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/195698-rocker-arm-shaft-fit-in-rocker-cover/page3?t=2072095&page=3)) \\ |
| They can help extend the life of your valve guides and seals. \\ | They can help extend the life of your valve guides and seals. \\ | ||
| Take side to side pressure that a normal rocker tip can put on the push rod away. \\ | Take side to side pressure that a normal rocker tip can put on the push rod away. \\ | ||
| They may also make your top end more quiet also. \\ | They may also make your top end more quiet also. \\ | ||
| - | If you look at it the end if the stock rocker arm, it's like the tip of your finger. ((mikeLI_77 of the XLFORUM http://xlforum.net/forums/showthread.php?t=2072095&page=3)) \\ | + | If you look at it the end if the stock rocker arm, it's like the tip of your finger. ((mikeLI_77 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/195698-rocker-arm-shaft-fit-in-rocker-cover/page3?t=2072095&page=3)) \\ |
| As the rocker is pushed down on your valve since it has a curve like your finger tip. \\ | As the rocker is pushed down on your valve since it has a curve like your finger tip. \\ | ||
| It is also putting some sideways pressure on the valve. \\ | It is also putting some sideways pressure on the valve. \\ | ||
| Line 95: | Line 112: | ||
| (especiallly if you use heavy duty springs) | (especiallly if you use heavy duty springs) | ||
| \\ | \\ | ||
| - | Most use the beehive springs now so that's not as much of an issue. | + | Most use the beehive springs now so that's not as much of an issue. |
| - | | S&S Roller Rocker Arms ((photos by xkreedx of the XLFORUM http://xlforum.net/forums/showthread.php?t=2059564)) || | + | | S&S Roller Rocker Arms ((photos by xkreedx of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/192378-1200-to-1275-hammer-conversion?t=2059564)) || |
| |{{:techtalk:ref:engmech:ss_roller_rocker_arms_1_by_xkreedx.jpg?direct&300|}}|{{:techtalk:ref:engmech:ss_roller_rocker_arms_2_by_xkreedx.jpg?direct&300|}}| | |{{:techtalk:ref:engmech:ss_roller_rocker_arms_1_by_xkreedx.jpg?direct&300|}}|{{:techtalk:ref:engmech:ss_roller_rocker_arms_2_by_xkreedx.jpg?direct&300|}}| | ||
| Line 126: | Line 142: | ||
| * 88-C9971: 04-06 XL 1200. *Also fits NRHS 1250 Kits. | * 88-C9971: 04-06 XL 1200. *Also fits NRHS 1250 Kits. | ||
| * 88-C9177: 07-up XL 1200. *Also fits NRHS 1250 Kits. | * 88-C9177: 07-up XL 1200. *Also fits NRHS 1250 Kits. | ||
| - | |||
| - | |||
| - | |||
| - | |||
| James Gasket Kit (17032-91-MLS): \\ | James Gasket Kit (17032-91-MLS): \\ | ||
| {{:techtalk:ref:engmech:james_gasket_17032-91-mls_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) \\ | {{:techtalk:ref:engmech:james_gasket_17032-91-mls_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) \\ | ||
| + | |||
| ===== Head Gaskets ===== | ===== Head Gaskets ===== | ||
| Line 148: | Line 161: | ||
| You just have to go slow and cautious not to cut into the gasket. \\ | You just have to go slow and cautious not to cut into the gasket. \\ | ||
| - | {{:techtalk:ref:tools:mls_rivets_1_by_johnk.jpg?direct&300|}} ((photo by JohnK of the XLFORUM http://xlforum.net/forums/showthread.php?t=1422877&page=8)) {{:techtalk:ref:tools:mls_rivets_2_by_johnk.jpg?direct&300|}} ((photo by JohnK of the XLFORUM http://xlforum.net/forums/showthread.php?t=1422877&page=8)) {{:techtalk:ref:tools:removing_head_gasket_rivets_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) \\ | + | {{:techtalk:ref:tools:mls_rivets_1_by_johnk.jpg?direct&300|}} ((photo by JohnK of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/132786-fixing-a-leaky-top-end-with-pics/page8?t=1422877&page=8)) {{:techtalk:ref:tools:mls_rivets_2_by_johnk.jpg?direct&300|}} ((photo by JohnK of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/132786-fixing-a-leaky-top-end-with-pics/page8?t=1422877&page=8)) {{:techtalk:ref:tools:removing_head_gasket_rivets_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) \\ |
| ==== Thickness ==== | ==== Thickness ==== | ||
| Line 157: | Line 169: | ||
| * **Evo Sportster / BT Head Gaskets**: | * **Evo Sportster / BT Head Gaskets**: | ||
| - | * MLS | + | * Cometic MLS |
| - | * C9205-030: 3.000" bore, .030" compressed thickness. | + | * C9205-030: 3.000" bore, .030" compressed thick. |
| - | * C9205: 3.000" bore, .051" compressed thickness. | + | * C9205: 3.000" bore, .051" compressed thick. |
| - | * 88-C9688: 3.497 to 3.563 bore, .030" thickness. (86-up XL/Buell/XB - data from NRHS site) ((http://www.nrhsperformance.com/partsgaskets.shtml)) | + | * 88-C9688: 3.497 to 3.563 bore, .030" thick. (86-up XL/Buell/XB - data from NRHS site) ((http://www.nrhsperformance.com/partsgaskets.shtml)) |
| * C9688, 3.500" bore, .030" thick (for Evo BTs per Cometic site) ((https://www.cometic.com/search.html?q=C9688)) | * C9688, 3.500" bore, .030" thick (for Evo BTs per Cometic site) ((https://www.cometic.com/search.html?q=C9688)) | ||
| - | * 88-C9692: 3.813 bore, .030" thickness. (86-up XL/Buell/XB - data from NRHS site) ((http://www.nrhsperformance.com/partsgaskets.shtml)) | + | * 88-C9692: 3.813 bore, .030" thick. (86-up XL/Buell/XB - data from NRHS site) ((http://www.nrhsperformance.com/partsgaskets.shtml)) |
| * C9692, 3-13/16" bore, .030" thick (for Evo BTs per Cometic site) ((https://www.cometic.com/search.html?q=C9692)) | * C9692, 3-13/16" bore, .030" thick (for Evo BTs per Cometic site) ((https://www.cometic.com/search.html?q=C9692)) | ||
| - | * 88-C9689: 3.497"- 3.563" bore, .040" thickness. (86-up XL/Buell/XB - data from NRHS site) ((http://www.nrhsperformance.com/partsgaskets.shtml)) | + | * 88-C9689: 3.497"- 3.563" bore, .040" thick. (86-up XL/Buell/XB - data from NRHS site) ((http://www.nrhsperformance.com/partsgaskets.shtml)) |
| * C9689, 3.500" bore, .040" thick (for Evo BTs per Cometic site) ((https://www.cometic.com/search.html?q=C9689)) | * C9689, 3.500" bore, .040" thick (for Evo BTs per Cometic site) ((https://www.cometic.com/search.html?q=C9689)) | ||
| * C9689-051, 3.500" bore, .051" thick (for Evo BTs per Cometic site) ((https://www.cometic.com/search.html?q=C9689)) | * C9689-051, 3.500" bore, .051" thick (for Evo BTs per Cometic site) ((https://www.cometic.com/search.html?q=C9689)) | ||
| - | * 88-C9693: 3.813" bore, .040" thickness. (86-up XL/Buell/XB - data from NRHS site) ((http://www.nrhsperformance.com/partsgaskets.shtml)) | + | * 88-C9693: 3.813" bore, .040" thick. (86-up XL/Buell/XB - data from NRHS site) ((http://www.nrhsperformance.com/partsgaskets.shtml)) |
| * C9693, 3-13/16" bore, .040" thick (for Evo BTs per Cometic site) ((https://www.cometic.com/search.html?q=C9693)) | * C9693, 3-13/16" bore, .040" thick (for Evo BTs per Cometic site) ((https://www.cometic.com/search.html?q=C9693)) | ||
| - | * C9690, 3.670" bore, .030" thickness. (sold for Evo BTs) | + | * C9690, 3.670" bore, .030" thick. (sold for Evo BTs) |
| - | * C9691, 3.670" bore, .040" thickness. (sold for Evo BTs) | + | * C9691, 3.670" bore, .040" thick. (sold for Evo BTs) |
| - | * C9694, 3.750" bore, .030" thickness. (sold for Evo BTs) | + | * C9694, 3.750" bore, .030" thick. (sold for Evo BTs) |
| - | * C9695, 3.750" bore, .040" thickness. (sold for Evo BTs) | + | * C9695, 3.750" bore, .040" thick. (sold for Evo BTs) |
| - | * Carbon Fiber (CFM-20) | + | * Cometic Carbon Fiber (CFM-20) |
| - | * C9718: 3.512" bore, .043" thickness. | + | * C9718: 3.512" bore, .043" thick. |
| - | * Copper | + | * Cometic Copper |
| - | * C9082: 3-13/16" bore, .043" thickness. (sold for Evo BTs) | + | * C9082: 3-13/16" bore, .043" thick. (sold for Evo BTs) |
| * **Ironhead Sportster Head Gaskets**: | * **Ironhead Sportster Head Gaskets**: | ||
| - | * Copper (commercially available) | + | * Cometic Copper |
| - | * C9698: 3.425: bore, .020" thickness. | + | * Cometic |
| - | * C9565: 3.425: bore, .032" thickness. | + | * C9698: 3.425: bore, .020" thick. ((https://www.cometic.com/search.html?q=C9698)) |
| - | * C9566: 3.425: bore, .043" thickness. | + | * C9565: 3.425: bore, .032" thick. ((https://www.cometic.com/search.html?q=C9565)) |
| - | + | * C9566: 3.425: bore, .043" thick. ((https://www.cometic.com/search.html?q=C9566)) | |
| + | * James Gasket | ||
| + | * JGI-16769-72-A: 1000cc, .016" thick. (1972-E1973 Sportster) ((https://www.jamesgaskets.com/product/jgi-16769-72-a/)) | ||
| + | * JGI-16769-73: 1000cc, .016" thick. (1973-1985 Sportster) ((https://www.jamesgaskets.com/product/jgi-16769-73/)) | ||
| + | * JGI-16769-82: 1000cc, .045" thick. (1982-1985 Sportster) ((https://www.jamesgaskets.com/product/jgi-16769-82/)) | ||
| **James Gasket MLS**: \\ | **James Gasket MLS**: \\ | ||
| Line 196: | Line 211: | ||
| {{:techtalk:ref:engmech:aftermarket_hd_gasket_comparison_2_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) | {{:techtalk:ref:engmech:aftermarket_hd_gasket_comparison_2_by_hippysmack.jpg?direct&300|}} ((photo by Hippysmack)) | ||
| - | | Cometic .040" MLS Gasket on 05 1200C ((photo by JohnK of the XLFORUM http://xlforum.net/forums/showthread.php?t=1422877&page=8)) | | + | | Cometic .040" MLS Gasket on 05 1200C ((photo by JohnK of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/132786-fixing-a-leaky-top-end-with-pics/page8?t=1422877&page=8)) | |
| |{{:techtalk:ref:engmech:cometic_.040_head_gasket_on_05_1200c_by_johnk.jpg?direct&300|}}| | |{{:techtalk:ref:engmech:cometic_.040_head_gasket_on_05_1200c_by_johnk.jpg?direct&300|}}| | ||
| - | |||
| - | |||
| \\ | \\ | ||
| ==== Torque Procedure ==== | ==== Torque Procedure ==== | ||
| - | |||
| - | |||
| Do not use oil in the cap nuts. Only a very light 'touch' on the bolt threads. Else the nuts can hydro-lock and you'll never get to the proper torque. \\ | Do not use oil in the cap nuts. Only a very light 'touch' on the bolt threads. Else the nuts can hydro-lock and you'll never get to the proper torque. \\ | ||
| Line 211: | Line 222: | ||
| All steps are done in sequence per head. \\ | All steps are done in sequence per head. \\ | ||
| If you don't follow this sequence while tightening, they can easily back out or warp the heads. \\ | If you don't follow this sequence while tightening, they can easily back out or warp the heads. \\ | ||
| - | It's also possible and it happens more than not, that; ((Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?t=2075350&highlight=torque&page=5)) \\ | + | It's also possible and it happens more than not, that; ((Hippysmack of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/198541-repairing-cylinder-studs-cases/page5?t=2075350&highlight=torque&page=5)) \\ |
| You tighten numbers 1 and 2, then tighten 3 or 4 tighter than you did 1 and 2 and all of a sudden 1 and 2 are both loose. \\ | You tighten numbers 1 and 2, then tighten 3 or 4 tighter than you did 1 and 2 and all of a sudden 1 and 2 are both loose. \\ | ||
| This is not pulling the head down evenly. \\ | This is not pulling the head down evenly. \\ | ||
| Line 218: | Line 229: | ||
| Torque Sequence: \\ | Torque Sequence: \\ | ||
| - | {{:techtalk:evo:engmech:head_torque_sequence_by_hippysmack.jpg?direct&350|}} ((photo by Hippysmack http://xlforum.net/forums/showthread.php?p=5793537#post5793537)) \\ | + | {{:techtalk:evo:engmech:head_torque_sequence_by_hippysmack.jpg?direct&350|}} ((photo by Hippysmack https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/198541-repairing-cylinder-studs-cases/page3#post4360598)) \\ |
| - | Sometimes the studs will stretch upon torque (especially too much torque). ((Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?t=2074117&highlight=torque+wrench&page=2)) \\ | + | Sometimes the studs will stretch upon torque (especially too much torque). ((Hippysmack of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/197474-leaking-head-gasket-loose-head-bolts/page2?t=2074117&highlight=torque+wrench&page=2)) \\ |
| Be aware that the stud itself could stretch (or twist in the middle). The long studs are weak in the middle. \\ | Be aware that the stud itself could stretch (or twist in the middle). The long studs are weak in the middle. \\ | ||
| Any bolts that stretch must be replaced. \\ | Any bolts that stretch must be replaced. \\ | ||
| Line 229: | Line 239: | ||
| In that case, you did not get to final torque on that bolt. \\ | In that case, you did not get to final torque on that bolt. \\ | ||
| - | When you reach the point in tightening any bolt that it wants to stop turning and the torque spikes, that is it. ((wedge of the XLFORUM http://xlforum.net/forums/showthread.php?t=2075350&highlight=torque&page=7)) \\ | + | When you reach the point in tightening any bolt that it wants to stop turning and the torque spikes, that is it. ((wedge of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/198541-repairing-cylinder-studs-cases/page7?t=2075350&highlight=torque&page=7)) \\ |
| That's the warning sign that from that point forward you are breaking something. The metal will tell you where it's limit is. \\ | That's the warning sign that from that point forward you are breaking something. The metal will tell you where it's limit is. \\ | ||
| - | You can also may a mark from each bolt to the head so you will be able to see if the bolts are unscrewing or pulling out. ((Bored now of the XLFORUM http://xlforum.net/forums/showthread.php?t=2075350&highlight=torque&page=5)) \\ | + | You can also may a mark from each bolt to the head so you will be able to see if the bolts are unscrewing or pulling out. ((Bored now of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/198541-repairing-cylinder-studs-cases/page5?t=2075350&highlight=torque&page=5)) \\ |
| **NOTE**: \\ | **NOTE**: \\ | ||
| Line 247: | Line 256: | ||
| The torque specs for different type / manufacturers are listed below. \\ | The torque specs for different type / manufacturers are listed below. \\ | ||
| - | When using the MLS torque specs, you'll find they are not that different from the FSM. ((Hippysmack of the XLFORUM http://xlforum.net/forums/showthread.php?t=2075350&highlight=torque&page=5)) \\ | + | When using the MLS torque specs, you'll find they are not that different from the FSM. ((Hippysmack of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/198541-repairing-cylinder-studs-cases/page5?t=2075350&highlight=torque&page=5)) \\ |
| For instance: After you get to 9 ft/bs, it's about a quarter turn to 14, then about a quarter turn to 22 and so forth. \\ | For instance: After you get to 9 ft/bs, it's about a quarter turn to 14, then about a quarter turn to 22 and so forth. \\ | ||
| But using the actual values instead of counting turns gets a more even pull on all sides. It also allows you to feel when something isn't right. \\ | But using the actual values instead of counting turns gets a more even pull on all sides. It also allows you to feel when something isn't right. \\ | ||
| Line 261: | Line 270: | ||
| * Step 6 (final pull): \\ Torque all bolts in sequence to 42 ft/lbs. | * Step 6 (final pull): \\ Torque all bolts in sequence to 42 ft/lbs. | ||
| - | {{:techtalk:ref:engmech:cometic_torque_sequence_instructions_by_johnk.jpg?direct&400|}} ((photo by JohnK of the XLFORUM http://xlforum.net/forums/showthread.php?t=1422877&page=8)) \\ | + | {{:techtalk:ref:engmech:cometic_torque_sequence_instructions_by_johnk.jpg?direct&400|}} ((photo by JohnK of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-motor-top-end/132786-fixing-a-leaky-top-end-with-pics/page8?t=1422877&page=8)) \\ |
| ===== Base Gaskets ===== | ===== Base Gaskets ===== | ||
| + | For comparison, OEM base gasket 16789-04 is .014" thick. ((rocketmangb of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-motor-engine/sportster-motorcycle-engine-conversions/198922-my-1275-hammer-conversion/page13?t=2075731&highlight=gasket+thickness&page=13)) \\ | ||
| Cometic: | Cometic: | ||
| Line 286: | Line 297: | ||
| Any of these are good for making a seal on the cylinder bases. \\ | Any of these are good for making a seal on the cylinder bases. \\ | ||
| If you run with no base gaskets, just remember to account for clearances from your cam / valve train (depends on what cams, valves, gaskets etc., installed). \\ | If you run with no base gaskets, just remember to account for clearances from your cam / valve train (depends on what cams, valves, gaskets etc., installed). \\ | ||
| - | Remember to subtract the compressed gasket thickness, if using OEM composites (about 20thou?), from your valve to piston clearance to avoid clearance issues. ((skixx55 of the XLFORUM http://xlforum.net/forums/showthread.php?t=707152&page=2)) \\ | + | Remember to subtract the compressed gasket thickness, if using OEM composites (about 20thou?), from your valve to piston clearance to avoid clearance issues. ((skixx55 of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/88622-threebond-instead-of-base-gaskets/page2?t=707152&page=2)) \\ |
| It's best (and assumed) to clay the pistons anyway to check where you're at on clearancing. \\ | It's best (and assumed) to clay the pistons anyway to check where you're at on clearancing. \\ | ||
| - | + | ===== Links for Purchasing Gaskets ===== | |
| - | + | Click on the links below. \\ | |
| - | + | * ....[[http://www.nrhsperformance.com/partsgaskets.shtml|NRHS Performance]] | |
| + | * ....[[http://www.hammerperf.com/xlgaskets.shtml|Hammer Performance]] | ||
| \\ | \\ | ||
| Line 299: | Line 310: | ||
| [[:techtalk:menu|{{:techtalk:gototechnicalmenu.jpg|}}]] | [[:techtalk:menu|{{:techtalk:gototechnicalmenu.jpg|}}]] | ||
| - | ===== Links for Purchasing Gaskets ===== | ||
| - | Click on the links below. \\ | ||
| - | * ....[[http://www.nrhsperformance.com/partsgaskets.shtml|NRHS Performance]] | ||
| - | * ....[[http://www.hammerperf.com/xlgaskets.shtml|Hammer Performance]] | ||
