Modified Engines

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newBookmarkLockedFalling Carbide bore
grizld1 11 1,655 by grizld1
Aug 23, 2012 23:55:39 GMT -5
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newBookmarkLockedFalling Check my math please
beekay 4 978 by beekay
Jul 31, 2012 22:32:14 GMT -5
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newBookmarkLockedFalling Is there any interest in high ratio primary gears
riksoto 1 646 by riksoto
Jul 31, 2012 19:15:45 GMT -5
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newBookmarkLockedFalling Custom OS Valves - Opinions
beekay 11 1,422 by beekay
Jul 25, 2012 11:08:08 GMT -5
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newBookmarkLockedFalling Piston dynamics calculator
mrriggs 8 1,151 by mrriggs
Jul 16, 2012 21:53:13 GMT -5
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newBookmarkLockedFalling Break in - New Rings
beekay 3 793 by jerry57g
Jul 12, 2012 11:03:14 GMT -5
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newBookmarkLockedFalling 447 Dimensions
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BubbaLeone 15 3,185 by BubbaLeone
Jul 3, 2012 19:15:55 GMT -5
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newBookmarkLockedFalling WISECO BIG BORE 775cc PISTON KIT
terribletabo1 7 3,731 by jerry57g
Jun 28, 2012 17:26:55 GMT -5
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newBookmarkLockedFalling Heiden Tuning Big Bore kit vs MikesXS Big Bore Kit
terribletabo1 5 8,574 by grizld1
Jun 11, 2012 11:19:09 GMT -5
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newBookmarkLockedFalling aftermarket cam choices
yorke 10 2,871 by 80xsbobber
May 2, 2012 21:11:54 GMT -5
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newBookmarkLockedFalling sump extension
jefferytodd 7 1,488 by flea
Apr 27, 2012 18:14:05 GMT -5
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newBookmarkLockedFalling Rebuilding/Upgrading Motor. Help!!
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johnu 34 3,648 by riksoto
Apr 27, 2012 13:07:31 GMT -5
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newBookmarkLockedFalling Need dimensions of 1983 Rods for Carrillo swap
terribletabo1 3 1,431 by terribletabo1
Mar 14, 2012 16:02:16 GMT -5
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newBookmarkLockedFalling Ecotrons 400cc to 800cc Small Engine EFI Kits
terribletabo1 1 6,226 by terribletabo1
Mar 11, 2012 20:26:00 GMT -5
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newBookmarkLockedFalling Removing the electric start on xs500/650?
ctrdownhill 8 1,493 by berniebee
Mar 8, 2012 23:49:50 GMT -5
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newBookmarkLockedFalling How much can be shaved off safely?
plattey 12 1,219 by jack
Feb 22, 2012 18:23:49 GMT -5
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newBookmarkLockedFalling breather valve
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jefferytodd 23 6,510 by crazypj22
Jan 15, 2012 16:22:50 GMT -5
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newBookmarkLockedFalling Electric starter removal
cotton 7 1,390 by xsleo
Dec 10, 2011 9:15:09 GMT -5
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newBookmarkLockedFalling Shell cam end caps
mixstup777 2 883 by mixstup777
Dec 3, 2011 17:21:08 GMT -5
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newBookmarkLockedFalling Shell #1 Repro
grizld1 2 1,438 by grizld1
Oct 17, 2011 21:40:52 GMT -5

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Modified Engines
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Shoutbox

r80rt: :)This is a splendid write up, THANK YOU!!!! Dec 26, 2015 16:54:05 GMT -5
mashermoto: What the what is this shoutbox for? Or should I shout, WHAT THE WHAT IS THIS SHOUTBOX FOR! May 12, 2016 22:22:21 GMT -5
motormike: Good Day ...just a FYI.. Wild Cat is this Labor Day weekend. Still go'n on. A few 650's still make the scene. Various rides at different skill levels each day.. awards dinner sunday eve. BS in the park'n lot after dinner. :) Aug 23, 2016 7:57:01 GMT -5
lsettle: First post in over 6 years! Aug 28, 2016 19:45:17 GMT -5
kardon: Wow quiet here, where did they all go. Oct 7, 2016 2:18:13 GMT -5
gggGary: XS650.com LOL Feb 16, 2017 20:49:02 GMT -5
buell88: Anybody have any idea who built the xs650 tracker used in the Draggin Jeans Ad on Pipeburn? May 16, 2017 16:24:09 GMT -5
joshua: The regulator/rectifier unit I got from Mikes PMA has closer hole spacing than original. Are we supposed to mill the holes to fit? Jun 7, 2017 19:25:58 GMT -5
joshua: My bad. I found the bracket they supplied to mount the rectifier/regulator... Uh oh. How is this meant to work? Which way is it meant to mount? Looks like I have to use some spacers or something. Good instructions would be nice. Jun 7, 2017 22:09:52 GMT -5
craig8johnson: Not sure if this is the right spot or not but oh well... Jul 11, 2017 18:04:15 GMT -5
craig8johnson: I'm checking the charging system. I'm afraid I might have fried the last battery. With the solid state regulator (after market) what should it be charging at. The book says, I think, 15 volts. I'm hitting 17 when revved. Is that too high? Jul 11, 2017 18:06:19 GMT -5
gggGary: Yes 17 volts is too high, about 14 volts is max, sounds like you don't have the right regulator or it's wired wrong. Jul 13, 2017 6:54:33 GMT -5
dean: Just saying Hello, new member who is going to fix up a 79 XS650 that has seen its better days. I will definitely have lots of questions coming up. Jun 23, 2018 16:45:32 GMT -5
tt650: Trying to breathe life into a 1980 that's been stored (indoors) for 25 yrs. Air filters are dry rotted. Have cleaned carbs but she only runs briefly on choke then stops. Need jet setting info and other ideas that might help her idle and rev. Jul 3, 2018 19:15:19 GMT -5
trix13: Hey everyone! New to the forum and am fighting those gremlins!! New charging system, ignition switch, coil and fuse box. Resistance is higher than normal on the ignition pick up so I'm trying to find one. No such luck yet. Aug 16, 2018 8:50:48 GMT -5
trix13: Also, even though all of my connections are clean, I cannot seem to find out why , when at higher rpms, I hit the signals and the rpms pulse with the signals...hahah. same with the brake light. I appreciate all input!! Aug 16, 2018 8:55:08 GMT -5
bob99: how do I post a question. I am new to the forum Jun 6, 2019 10:52:10 GMT -5
adlpc: Hello all! Been enjoying your edifying posts and discussions - and as a fan of the XS650 since my early teenage years happy that I now own a 1980 Special which I plan to turn into a vintage half faired racer. Thank you all for being here! Oct 1, 2019 0:58:56 GMT -5
jimothyj: Hello everyone, I just joined & wish would have known about this site in 2014 when I brought my 1974 TX650A back from the grave. I have spent a good deal of $$ and alot of time on it. Just painted it and working on electrical, I will post pics soon, Apr 10, 2021 2:14:13 GMT -5
louisvan: trix13 - I had a problem with my 1975 SX650. When I got to highway speeds, the engine lost power. The problem was in the connectors. At a certain vibration and the wind pushing on the wiring loom, the connector lost continuity. A bad crimp to the wire. May 20, 2021 1:19:09 GMT -5