armyofda12mnkeys Posted August 6, 2010 Share Posted August 6, 2010 So I installed '81 xs400 coils on my '78 xs400 bike (upgraded it to electronic ignition) and since they don't fit the mounting area, I had to temporarily move my coils somewhere else and tie them down on the frame with plastic tie-downs (until i can find a place to weld a fabrication for me). I know that whatever electricity going through will be eventually grounded via the spark plugs to the engine... but do the coils have to be 'grounded' themselves as they have 2 metal screws sticking out where they are attached to mounting brackets? I assumed they dont need to be grounded as a lil' later the spark plug-to-engine takes care of that, But when i googled if it needs to be grounded, someone with a (way) different bike saw his wiring diagram said they needed to be, and his bike started up after he did this... So i just wanted confirmation it's alright to NOT ground it. Link to comment Share on other sites More sharing options...
Moderator drewpy Posted August 7, 2010 Moderator Share Posted August 7, 2010 I grounded mine, but looking at the schematic, looks like they don't need to be! Link to comment Share on other sites More sharing options...
FLYIN BRIAN Posted August 7, 2010 Share Posted August 7, 2010 I'm sure it wouldn't take a lot of creation to put even a temporary ground wire on. You'd have your answer then. Link to comment Share on other sites More sharing options...
armyofda12mnkeys Posted August 8, 2010 Author Share Posted August 8, 2010 I'm sure it wouldn't take a lot of creation to put even a temporary ground wire on. You'd have your answer then. cool, if you can see now, it is just has zip-tied-downs onto the frame lol... but its not really grounded as its the rubber part and not metal on metal i think... She's running fine. but i'll probably add a ground wire jussst in case soon. New look: Link to comment Share on other sites More sharing options...
Moderator drewpy Posted August 8, 2010 Moderator Share Posted August 8, 2010 looking good my friend, keep those cases polished Link to comment Share on other sites More sharing options...
Moderator mervin Posted August 8, 2010 Moderator Share Posted August 8, 2010 that is looking nice i my opinion a set of wire wheels would look good on it Link to comment Share on other sites More sharing options...
armyofda12mnkeys Posted August 8, 2010 Author Share Posted August 8, 2010 haha I like the bare look of the air boxes without the side covers . Bought some of the pod lookin ones off ebay but eh, wasnt a fan plus didnt want to re-jet (plus they didnt fit! err all the xs400 pod filters on ebay claim they fit, but they dont. mine are 54mm and those are all 48mm).... i SHOULD polish the air filter cases . They look a bit shiny in the middle cause are taped up lol cause the screws were stripped and not holding them together.... In fact 1hr after this pic, i found someone on craigslist who came over and traded a new air boxes + mufflers + headers for an old pair of side covers i had (GOOD TRADE 4 me)... that is looking nice i my opinion a set of wire wheels would look good on it Yeh i thought i may try it in future... do 81 xs400 wire wheels swap into a 78 x400? Id love to have this old time look: Link to comment Share on other sites More sharing options...
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