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Air filter/box question

  • Thread starter Thread starter Splittie
  • Start date Start date
S

Splittie

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I am looking at replacing the seat on my 81 750L with a handmade fiberglass one.
My question is, can I replace the filter housing with something custom built? The original one will not allow the clearance I need for the seat to sit flat.
Possibly use a K&N replacement and make a housing for it to go into.
 
Sure

Sure

Sure, I can't imagine why not and I think it would work perfectly well. I think you'll want to make it as roomy as possible and make sure it allows enough air to get sucked in. Beyond that, I don't think your bike will ever "know" the difference!:-D
 
Splittie said:
I am looking at replacing the seat on my 81 750L with a handmade fiberglass one.
My question is, can I replace the filter housing with something custom built? The original one will not allow the clearance I need for the seat to sit flat.
Possibly use a K&N replacement and make a housing for it to go into.
Click to expand...

You can but you may have a fun time, getting things set correctly, once it's back together. These are a finicky fuel mixture machine (very lean from the factory) and air flow/leaks, even tiny ones, make a huge difference on the performance. When things are too lean...you'll see flat spots in the 3-5K range, with a floating idle. Too rich (rarely the case) and you'll know it! Good luck.
 
I took a foam filter and stuck it where the airbox filter box above the battery is suppose to go. I've eliminated the filter box, and have more room above the battery. with the stock carbs on my 81 GS 750E I do not notice any performance change. The only thing is the pod filter is just stuck in there, the plastic air manifold is hard plastic, so a hose clamp won't work to help hold it on, I've gone over some reall bumpy roads, and the single filter doesn't fall out.



Splittie said:
I am looking at replacing the seat on my 81 750L with a handmade fiberglass one.
My question is, can I replace the filter housing with something custom built? The original one will not allow the clearance I need for the seat to sit flat.
Possibly use a K&N replacement and make a housing for it to go into.
Click to expand...
 
zinmaker said:
I took a foam filter and stuck it where the airbox filter box above the battery is suppose to go.
Click to expand...
Thanks for the info. The airbox on mine is such a strange shape, it is hard to get in and out. The previous owner had tore it up over time, so it already has extra holes in it.
 
my airbox was tore up also by the P.O. so i went and got a fiberglass kit from the auto parts store, and re-fiberglased the "extra holes". sanded them down to make the repair blend in better, i didn't bother with paint, for no one will see that. at worst i think it may yellow some with age.
 
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