Help! Yamaha Aerox YQ50 Exhaust Advice Needed!

bigdoc1991 · L Plate Warrior Joined: 06 Oct 2007 Karma :

Hi. I've just bought a Leo Vince ZX Hand-Made Exhaust for my ped and it fits but on the standard pipe there is two holes: 1 is the main pipe the 2nd is another smaller pipe which leads back into the crank case.On the Leo Vince exhaust there is no second hole for it? Do i just leave it off or cover it up? Help please!
Thanks
Andy Very Happy

Welshd1k · World Chat Champion Joined: 03 Oct 2006 Karma :

second oen have a rubber hose? comes off the bottom bend? is fo thet is no longer needed (thats some form of restrictor cut it and weld it on a stock pipe for more power.)
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Current >Cb600fx hornet, ns125rk90 21.7bhp@wheel<
Sold >,zxr400 h2 (33bhp kit) rd350 n1 rd350 lc2<

bigdoc1991 · L Plate Warrior Joined: 06 Oct 2007 Karma :

Yes is it a second rubber hose. I've explained to my dad (whos a mechanic) that if that is removed then the restriction on the exhaust is removed but he isnt convinced. He thinks it will spew up exhaust fumes and oil Confused

Welshd1k · World Chat Champion Joined: 03 Oct 2006 Karma :

nope thats the restrictor look on most web pages for derestriction it shows that pipe on the stock pipes being clamped and welded shut
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Current >Cb600fx hornet, ns125rk90 21.7bhp@wheel<
Sold >,zxr400 h2 (33bhp kit) rd350 n1 rd350 lc2<

---- · World Chat Champion Joined: 29 Sep 2006 Karma :

Im not convinced.

If the second pipe is metal then it probably will be the restrictor pipe,but this metal pipe would not attach to the crank case,it would be a closed end.

If the pipe is rubber i would have thought it was a crank case breather pipe.That would go from the crank case to the exhaust (although i thought they went to the air intake side not exhaust?)

anyway in answer to your question:
If its a rubber pipe the i think most people replace it with a small k&n style filter...

Oh and it wouldnt spew up exhaust fumes,just oil vapour Thumbs Up

HTH

dave
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DRZ-400sm

rezzin · World Chat Champion Joined: 20 Jul 2007 Karma :

Im pretty sure its something to do with the catalytic converter malarkey? Most people just cut it off and crimp the end over,or patch over it with weld or whatever. Taking it off wont harm anything. Thumbs Up

Caft Dunt · Derestricted Danger Joined: 27 Sep 2007 Karma :

will probably be either for EGR or secondary air injection. seal it and forget about it i reckon