hey i have 1991 civic h/b with a b18a1 swap i am burning oil it only burns oil at high rpms/wop if i daily drive it its fine.we did a valve adjustment that wasent it,do you think i should change my pistons and rings?also its 91 block on a 92 head,i also dont think its the head gasket because im not loosing any coolent.

thanks for looking

 

It's an old engine could be a lot of things, but if I were to guess it would be rings. Maybe time for a rebuild or keep adding oil to keep it running to save for another.

 

cool so you think if i get new rings and pistons that should help right?

 

Might as well do a rebuild at that point.

 

How much oil is it burning anyway?

 

replace your PCV valve. mine had the same problem, replaced that, fixed the smoke!

 

if im wop i got to fill it with half a quart every 2 day

 

so you dont think its the rings,also is the pcv were the black box next to the oil filter?

 

Fix that PCV valve, its like 5 bucks. Its a hell of a lot easier/cheaper than replacing the rings.

 

where is it located

 

No, its in between the runners. look for a little 90 degree bend and a big hose that goes to the IM.
not quite a B, but close enough

 

thanks also what is the pcv valves job how does it help burning oil

 

It prevent pressure from building up in the crankcase and stop blow-by. That's when gasses and oil blow across the rings and get burn up causing smoke.

 

thanks alot i let you know what happens

 

GL