xs400

so i picked up a 1984 yamaha maxim 400 and it leaked allot of oil and would rev to about 8000 then pop and sputter a bit so here is what i did i took the hole top end of the motor off took pistons out cleaned them and put it back togather allso to note i took one piston out at a time. put it...

I have been working on a good example of an XS400 Seca. It is complete and unmolsted however it does have the wear associated with a used but not abused 30 year old motorcycle. The following has been completed: NOS rear Shock, Fork Seal, Tires, sprockets, chain, plug wires, caps, plugs, valve...

Hey all, Pamco electronic ignition with e-advance just arrived! I'm wondering what kind of timing light I should buy? - new to this - Preferably on the cheap, but good enough to set this puppy up and get to rippin' Cheers

i found out that i have a problem with a cylinder on my engine , due to the time that the engines wasn't running (around 10 years ) i have corrosion in on of the cylinders . i consulted my mechanic and he told the best solution is to go on a bigger size piston and machining the cylinders now...

So long list of problems to take care of right now. Piston Rings Left Cylinder burning oil like a siv, this is new. Gonna re-fit both. -(Just a guess, but leak down test was 130psi, add teaspoon oil, 150psi) Need a new chain as mine is kind of seizing and making terrible noises. Sprockets are...

Hello, I bought a 1983 XS400 seca I will wish to know the total length of the rear shock as the one I bought the guy welding a steel pipe ... I will wish to replace the tube by an equivalent damper the original ... you have references or dimensions of the original shock ... thank you very much...

Tore my carbs apart and cleaned them thoroughly with carb cleaner. Set the timing to be fairly accurate and point gap is perfect. Valve clearances all within spec on the tighter side (quite quiet now, might have read my old posts on the valve train noise, has all but gone away now with valves in...

Anyone know if Pamco Pete i still around? I bought the electronic ignition for xs400 from his website and emailed him both on this forum and on the email he provides on his website and have heard nothing back. Just wondering if I should contact Paypal to cancel and seek a solution elsewhere...

Hello xs400.com forum, bevore introducing me to you, I really need your help: I want to purchase my first bike this weekend and need to know whether the xs400 is big enough for me. I am 1,95 cm (6'4") and I have to that date no opportunity to test-sit the bike. So I wanted to ask you for...

Time for new battery or can I just top 'er up with distilled water? Apparently <1 year old as of PO. All the levels are way different and around 1/2 full or so. Has died 3 times in the last week and a half due due to my cranking over and over while tinkering and not taking her out for a ride...

Hey, Changed my oil and adjusted valve clearances yesterday, now valves all within spec. Took a video before right cylinder intake valve was set properly. Didnt like the sound so went back over and checked all clearances. I just did a poor job on one of them (was .003 out! on an intake valve...

Hey all, After adjusting valve clearances and replacing tappet covers one of them broke with barely any applied torque. It broke similar to the ones in the pictures however all of the threads are intact. It broke above the final thread and quite cleanly. Those pictures are not mine! Just...

I'm looking for the right hand switch assembly for an 81 XS400. I'm missing the starter button, which is proving to be quite the pain. Any help would be great!

Bear with me, The idea is for suggestions and advice here, not, "lets be practical kid, you cant do this." :thumbsup: Converting from solo seat (with fairly chopped frame) to enough room for up to a 2 hour trip through vancouver island (<90kmh with twisties and highway stretches) with the gf...

Hey, New plugs put in, went for 50 km ride at variety of speeds: stop'n'go, country roads and highway speeds ~130 kmh. Took them out to check on them as I had some wet fouling on the previous ones (BPR7ES and BP7ES from PO). I put in BR7ES' cause that's all my local shop had and figured it'd...

Hey Guys, Just wondering how normal this engine noise is? I moved my phone around a bit just to pick up the variety of the sound around the cylinder head. Increases with rpms all the way up through 5th gear at highway speeds. My dad's a harley mechanic and I sent him the video but I thought...

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Hi everyone, this is my first post on this forum, so like the other I need to introduce myself. My name is Dave and I own a xs400 1982sj heritage special. Now the problem, my flasher work but they don't blink..so I change the relay for a Tridon EP35, but nothing work. Flashers dont light and...

Hey guys, so I just bought an 81 xs 400 and want to customize it. I was thinking either a bobber or a café racer, I like both ideas. I have a lot of experience with motors and electronics, and basically everything except fabrication/welding. I was wondering what build would have the least amount...

Hello greenhornet here from DK I want a new fuel tank on my XS400, bought a DT80 1970 but it didn't fit :s Is there any other models that fit like xs650 or sr500 fuel tanks, it has to be wide enough to go over the ignition. I would like a small fuel tank like a GT80s tank :s Please help kind...