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techtalk:evo:engmech03m [2021/08/11 03:28] hippysmack [Pics and Information on Evo Sportster Heads] |
techtalk:evo:engmech03m [2024/01/03 21:02] (current) hippysmack |
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| ====== Pics and Information on Evo Sportster Heads ====== | ====== Pics and Information on Evo Sportster Heads ====== | ||
| - | Article originally written by aswracing of the XLFORUM with further commentary by NRHS Sales of the XLFORUM. ((http://xlforum.net/forums/showthread.php?p=4722973&highlight=883r+heads#post4722973)) \\ | + | Article originally written by aswracing of the XLFORUM with further commentary by NRHS Sales of the XLFORUM and extended with further pics and information. ((https://www.xlforum.net/forum/vendors/nrhs-high-performance/161314-sportster-heads-general-information?highlight=883r+heads#post4722973)) \\ |
| Some of this information is now outdated as some of these heads have been obsoleted. \\ | Some of this information is now outdated as some of these heads have been obsoleted. \\ | ||
| However, the information itself is very informative regarding the changes and specs on the different stock heads. \\ | However, the information itself is very informative regarding the changes and specs on the different stock heads. \\ | ||
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| * 2004-present (rubber mounts) | * 2004-present (rubber mounts) | ||
| * 2007-up (fuel injected) | * 2007-up (fuel injected) | ||
| + | |||
| + | ===== Casting Numbers ===== | ||
| + | |||
| + | | 1998 XL1200S Head Castings on Top ((photos by Hippysmack)) || | ||
| + | |{{:techtalk:evo:engmech:heads_-_1998_1200s_pic4_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:heads_-_1998_1200s_pic3_by_hippysmack.jpg?direct&300|}}| | ||
| ===== Interchangeability ===== | ===== Interchangeability ===== | ||
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| (we fit them with 1.760" intakes and 1.530" exhausts when doing a Stage 2 job. For Stage 3 we change the seats) \\ | (we fit them with 1.760" intakes and 1.530" exhausts when doing a Stage 2 job. For Stage 3 we change the seats) \\ | ||
| - | The ports on these heads are not particularly good, they have something of a squared off bowl and a low floor. \ | + | The ports on these heads are not particularly good, they have something of a squared off bowl and a low floor. \\ |
| In other words, these are areas where they need more material. These heads are all black with polished fins. \\ | In other words, these are areas where they need more material. These heads are all black with polished fins. \\ | ||
| Line 92: | Line 98: | ||
| They are virtually identical to the Buell XB heads with 1.810" Intake and 1.575" exhaust valves with 7mm stems. \\ | They are virtually identical to the Buell XB heads with 1.810" Intake and 1.575" exhaust valves with 7mm stems. \\ | ||
| They have 62cc bathtub shaped combustion chambers. They are either all black or black with highlighted fins. \\ | They have 62cc bathtub shaped combustion chambers. They are either all black or black with highlighted fins. \\ | ||
| + | |||
| + | | 1998 XL1200S Heads ((photo by Hippysmack)) ||| | ||
| + | |{{:techtalk:evo:engmech:heads_-_1998_1200s_pic1_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:heads_-_1998_1200s_pic2_by_hippysmack.jpg?direct&300|}}|{{:techtalk:evo:engmech:heads_-_1998_1200s_pic5_by_hippysmack.jpg?direct&300|}}| | ||
| ====== Buell Heads ====== | ====== Buell Heads ====== | ||
| ===== General Information ===== | ===== General Information ===== | ||
| - | |||
| There are 2 generations of Buell heads: | There are 2 generations of Buell heads: | ||
| * 1995-2002 (tube frame models, aka "tubers") | * 1995-2002 (tube frame models, aka "tubers") | ||
