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Hi! I need new chain for my 1980 XS400 Sohc. But there are a lot of choices. Is the most regular and cheapest one (DID 50 Roller Chain) fine for our bikes? DID STANDARD CHAIN 530/102 OPEN CHAIN WITH SPRING LINK | Motomike Sprockets look fine. almost whole chains sits nicely on the rear...

Sorry for pumping up such an old post, but i need some advice. Last year I bought 1980 XS400 and started to rebuild it and now im getting to the finish. It came with some crappy pod filters and now Im looking to buy some UNI filters. Luckily the rubber thing that original filters attach to is...

Okay, I understand that. But how do it connects to negative on the diagram that Bear posted?

Okay. By going to positive I was thinking connecting it by the same wiring diagram that Bear posted. By going straight to negative I was thinking about this diagram:

Anyone? :D

Hi! Im building a 1980 XS400 SOHC and completely redoing the wiring from ground up because It was real mess before. I also need a new reg/rectifier. The bike had a regulator/rectifier where the field coil was going to ground. But because of fully rewiring it, I think can go with the newer one...

Hi! I need to buy new chain, but not sure which one I need. Local shop offered me a 100€ chain, but Im pretty sure that I can go with a bit cheaper one. :D Does one of these look ok? (Not sure what the roller chain is?) Bike is 1980 XS400 SOHC. DID STANDARD CHAIN 530/104 OPEN CHAIN WITH SPRING...

Thank you very much for explaining! By looking at some tire/rim size tables, the 4.00 tire on 2.15 wheel shouldn't be too bad and too oversized. I'll try and figure out how much room I have on the front loop. I know that many people have used 4.00-18 Continental TKC80 on the same bike with same...

Hi! I have the same question. I own a 1980 XS400 with 18'' rear wheel. I have taken the bike apart to rebuild it and want to buy new tires before putting it back together, but I don't remember how much room I got between the tire and chain. Right now I have 110/80-18 rear tire and the exact...

Hi. I got the regulator/rectifier today. But my electrician don't have time next few days, but I just can't wait. :D I wanted to ask if I connect it wrong is it possible to mess the reg/rectifier up. Like if it's ground switching regulator and I connect it to positive or other way round, is it...

Thanks!! If you have time to explain a bit more how to exactly do it, would be great. English isn't my native language so its hard to understand things sometimes.

Thank you! Think I'll try out the dohc regulator. That's the cheapest and closest one to me right now. If it's possible to make any of these work with any model, then I'm sure my electrician can wire it up right when I take the bike to him. AMC, the separate regulator and rectifier on my bike...

The only one I could find with male connectors is this one: https://www.mikesxs.net/np-rick-s-motorsport-electrics-regulator-rectifier-fit.html But it has different wire colors. I know that my bike originally had this regulator for field...

http://www.xs400.com/threads/xs400-1980-not-charging-battery.19788/ There is some information what I have tested and some results. After the last post there I went to electrician and he did some more test and said that stator and field coil is good and I need new regulator. We agreed that I will...

Okay, things are getting more confusing for me. :D Is it worth trying xs400 dohc regulator/rectifier? Found cheaper one near me.

The regulator/rectifier was already changed. Both my connectors from regulator/rectifier are male connectors, but there isn't such choice. Im not sure If someone already changed connectors or not. The shop technician told me the RR33 is low side switched field. RR38 is high side switched...

I contacted the shop and early next week the RR38 will be back in stock. Is it the right one for my bike?

Hi. I need new regulator/rectifier for my 1980 XS400 2a2. Does xs400 Dohc regulator/rectifier work with older sohc bikes? I found one shop in Europe that sells them. There's three choices: RR32, RR38, RR33 https://www.electrexworld.co.uk/cgi-bin/sh000001.pl?WD=xs400&PN=RR32.html#SID=439...

Did compression test and 150-155 psi for both cylinders, which is good according to manual. Put original h-pipe between air pods. Idle is almost good and revs are dropping better then before. But still wants to stall when giving throttle faster.

Yep, the exhaust is crap, i'll buy new one for next season, i live in Northern Europe, riding season is over soon. I found one guy from internet who is using same pod filters and he said that he changed main jet to 137.5 and it runs great for Him with these. Thats what I did too when rebuilding...