motor

Could anyone identify the bolts I need for the midsection here (below the spark plug)? I got a half disassembled motor and seems I’m missing this one bolt on either side

Hey all. I just inherited a 1973 xs650 and the lowest gasket needs replaced (Photo reference) but cannot for the life of me remove the top cylinder head. Seems prev owner used some really strong gasket sealant or something. Is there a way to skip removing the cylinder head cover? Or do I need to...

HELP! Hey everyone looking for some guidance here. This is my first EVER motorcycle so I know nothing! I recently bought an xs650 (in pieces) allegedly ran, then was put in storage as a back up motor. Upon removing the towels that were plugging up the intake and exhaust ports I discovered...

For Sale: Custom aluminum motor mount kit for the 1974 and up XS650! I’ve been selling these for several years to XS fans and builders and they’ve ended up all over the world... 🌎 Simple and waaaay cooler then the fugly steel factory mounts, the set consists of front and rear sets, 8 pieces...

I have a crank wheel that the threaded end where the alternator lock nut sits is bent. The easy fix would be to get another wheel, but this is a 533 crank which are pretty scarce here in NZ and the crank has been rebuilt, welded and runs very true. It does not need to be 100% as it will be...

Now Available!!! Custom aluminum front motor mount kit for the 1974 and up XS650! I’ve been making and selling Aluminum rear mounts for two years and people have asked for a front version, here’s an idea I came up with... Simple and waaaay cooler then the fugly factory mount, consists of 6...

I am doing a bit of work on a friends XS sidecar motor during the off season. One thing I do as a matter of course is Heli coil the front cam chain guide bolt holes as I have seen them come loose / break off during a race meeting putting an end to the fun. The guide on this motor is almost new...

Hello people of the XS nation, I need some assistance, I have been looking for a simplified wiring harness for what I believe is a 1980 xs650sg. The P.O. tore the stock harness to pieces and painted most of it. Trying to make heads or tails of the thing. Here the motor please let me know what...

I'm wondering what two of the three top mounts do on the 1975 XS-B frame. I know the #1 mount is the top motor mount, and just has a bracket that bolts to the top of the engine, nothing fancy. and I'm pretty sure the #2 mount is for the two top ignition coils, but I can't for the life of me...

Hello all, I have the guts from a 1975 447 motor but the case has unfortunately been tended to at some point by a chimpanzee. All four of the locating pins for the crank bearings on the upper case have been smashed in because the bearings weren't lined up properly when the halves were...

Hello all, I am new to the site and this is my first post. Please forgive any formatting errors. I recently purchased and tore down my very own 1975 XS650B and I have some questions regarding where to go from where I am at. I currently have the engine completely apart, and have a shop that can...

Hey all, I recently rebuilt the top end of my (new to me) 78 XS650 SE. The following was done: New camchain New front and back tensioner New Wiseco Pistons and rings (second oversize) Machined out the jugs to fit New Boyer Bransden Ignition setup Cylinder head ported (intake/exhaust) Cleaned...

looking for an xs650 motor to start a chop project with,would prefer one that has good compression and is ready to rock just needing some minor love,willing to drive if in georgia

Looking for complete engine include carbs and all electrical kits. Turn over motor, have a high compression, and not frozen motor. Will buy more than 3 engine if you have.

I cleaning the oil passages on the rockers. I took the barrel plug that holds the rocker arm in and in my gasket set I bought there are 8 red o rings. 4 of them look a little bigger and 4 look a little smaller. this is my first rebuild of a xs and dont know which ones to use. any help will be...

As a few of you may know that I recently purchased a really nice 80 xs650 special and turned right around and sold it. I am now kind of kicking myself and think I should have kept it. BUT... I am thinking of taking this winter to BUILD a motor from scratch. I have read some KILLER threads...

Here is one of the motors I just finished testing that has the pistons that everyone is asking about. Motor has 1mm over pistons all new seals and gaskets and head was completely taken apart and new seals and valves lapped in motor runs strong and has great throttle response and thanks to some...

I know a few people have modified car engine stands to hold the xs650 motors. Does anyone have any good pics or drawings of the brackets that they made to modify the car stand? Preferably non welded brackets seeing as I have yet learned that skill. Thanks, Mark

Model differences - early..XS1,B and some F had a 26 tooth gear and smaller ended shaft.. early shaft later shaft 25T gear - XS1, B also used a thrust bearing between the seal and the spring guide instead of a washer and had no circlip on the shaft to hold the mechanism in place - here...