Burning oil

[Jos4DCivic]

Here is the story. My bro just bought a 91 SI for $1700. it is clean inside and out (other than a dent on passenger side). the problem is that it burns oil like a mofo. its got custom straight piping with no muffler.so as you could imagine it is loud as hell. my question is will it have a hard time passing smog due to oil being burnt internally? my bro dont know shit about hondas. i think it could be valve seals. hopefully it is not his piston rings.

[TheSilentChamber]

hondas burn a little oil naturaly, how much are you talking? also does it have a cat?

[91civicguy]

dam my car has the exact same proble it is completele stock. ok here it goes one day i changed my oil 3 days later with regular driving it was below the lower oil marker i was like wtf. i just changed the oil im sonfused what could be the problem

[icE_x]

maybe ur oil pan is leaking - u probably need a valve job and new heads and replace the gaskets n all that great stuff...

[Jos4DCivic]

its burning bout a quart and a half a week. oil pan is cool its not leaking .It does have a cat. and when you build rpms, it throws kinda blue smoke. im burning oil inside

[91civicguy]

dude same here and when you let off of the gas some times it comes out

[riceriderjade]

valve seal treatments and highmilage oil tend to help a bit, but replacing the valve seals all together isn't a bad idea.

i think it has something to do with having engines with such long lives tho, volkswagens tend to use a lot of oil too

[91civicguy]

so the worst that it could be is the head i got ??