engine rebuild

I am rebuilding the engine of my newly acquired XS400 and I managed to get the timing chain kinked in the middle of the cylinder which is preventing me from getting the cylinder off the engine. What’s the trick to getting it out? Thanks to any helpers in advance.

Hey all, Just wanted to post my about my success pulling the engine outa my bike. Crazy experience so far, better feeling of achievement than playing Zelda right now. Bought the bike used last year, had a full summer of riding before the bike started falling apart on me. Oil leaks, slipping...

Hey everyone! I'm a newbie, both to this forum and to working on engines. And to riding lol. I'd really appreciate any input on this. I made a mistake - I was taking apart the engine on my 1978 XS400 and as I was splitting the crank case, I found this little piece had fallen onto my workbench...

Engine swap - Is an engine swap possible? What other engines will/could work? Current Engine Number : 16N - 000113 Frame Number : 15G - 001719 Will other XS400 Model engine's fit without mods?

Gday peeps thought my current xs400 chop build might tickle some of your fancies its a 70s inspired gooseneck frame hardtailed one off just started work on it this week still gotta rebuild and polish the old xs lump but planning on running a 1/2 chain driven pma alternator as the old coil and...

Hi All, Have been using this forum for a few months but only just made an account - because I ran into a problem. Hoping for some insight - I love to learn so bring on the knowledge! I bought my first bike, a 1980 xs400s, in July. Classic story: it had been sitting in a garage unused for...

Hey Everyone! After hijacking a few threads, I figured I'd start my own. I'm rebuilding my 1981 Yamaha XS400H (4R5 engine). It's my first bike. I'm pretty mechanically inclined but I've never worked on anything like this before. Here goes nothing… A Little Intro: Bought this guy for $600 CAD...

So I just pulled the top end on my 1980 xs400 and replaced a gasket that was leaking about half way down. I reassembled everything and with the top cover back on I put a 17mm on the flywheel and turned it to make sure it all went well.. it didn't. I'm hitting SOMETHING inside and its causing the...

Hello all, Ready to pull the trigger on an Xs400 that is not complete (lots of redone and new parts), but the engine is original and hasn't run in a while and when it didn't leaked and has physical (laydown) damage. Since I'm going to have some time putting the bike together I figured I could...

I have a 83 Maxim with the DOHC. I'm tearing off my cylinder head and I'm following the manual. It says to lock ACG rotor bolt. How do I do that?

Will it work?

Hello fellow 400XS riders! I have just finished my rebuild on my jugs and I have a question on alignment of the camshaft. In the manual it says straight up with the Camshaft centrifugal and Projection on the retaining bolt ( both marks lined up) with the LT mark on the alternator cover in...