Motor is a 90 B18A1.
Rebuilt with Honda rings, Honda Bearings.
Machine shop honed the block.
Felpro Gaskets
Head gasket is Felpro but its rubber covered metal multilayer with copper spray.
Felpro Valve Stem Seals, there was no difference in Intake and Exhaust.

Motor is stock rebuild minus being shaved/decked .022" to clean up any warp-age.

Motor has 200 miles on it, compression is 183, 180, 180, 178, taken at 160 miles. After i first got it running i took it out and engine braked as much as possible from 3500 and down. Engine has only been over 3500 a couple times. Mainly just engine braking a few times from 4500 and 5500.

Exhaust smokes at idle lightly, smokes pretty heavily on rev's. No smoke on initial startup. Engine braking then back to maintaining speed results in a good cloud of smoke.

It ate half a quart on the first 150 miles, then another almost half quart on the last 50 miles.

I don't know what is wrong. If it was valve seals i would look towards the huge puff of smoke on first start up. If it was rings not sealing i would look to low compression or uneven compression.

Or is 180 compression low for a 9.5 : 1 motor.

Any ideas.

 

I'm not a big fan of seals other than OEM on a Honda.Having the second ring installed upside down will still give good compression readings and still pass oil.If your piston and guide clearances are good , my bet is the second rings.The seals work ok,but will sometimes lift up off the guides.The OEM seam to stay in place better.

 

for it to eat that much oil there has to be something wrong with the rings. either installed upside down or not sealing properly.

take the head off again and have a look at the cylinder walls.....then pull the pistons out.

 

Your compression rings aren't what scrape oil off the cylinder walls anyway so a compression test won't tell you anything about a ring related oil consumption problem. The oil control rings are what control oil consumption but there is no simple test you can do to determine whether they are working or not. In general, if your engine smokes on hard acceleration it is usually caused by stuck or damaged oil control rings. If it smoke on decel or startup it is a valve guide sealing problem (however, that does not mean it necessarily bad valve guide seals). Usually an engine that consumes that much oil has faulty oil control rings, it's not really possible for that much oil to get past the valve guides even if they are badly worn.

 

Yea i had a old worn out LS in my daily driver for a while, it would blow a good cloud on first startup, then after it warmed up it was good, till i did some engine braking.

I think its the rings on this one, either i got some upside down, or i didnt get the oil control rings in correctly.