Alright I have a rebuilt B18C engine. It smokes at start-up especiallt when cold or sitting for awile. Valve Guides were replaced and using Synthetic Oil(6,500 miles)
Normally this would be valve seals.

Best way to file fit rings? Is there a tool and where is it available?

Why then does it smoke when I'm driving?
Lots of blowby through valve cover and PCV tube to catch-can also!
Maybe the Headgasket is bad too or ARP's not torqued right?
It also only had @130 compression Cold and @180 WET Compression.



[Modified by crxhybrid1320, 9:02 PM 1/20/2003]

 

How did you install the rings? Did you set the end gap correctly? What did you set it to? Which pistons & rings?

 

Installed them with a ring compressor tool!

I did the math correctly-Top(3.184 X .006)-Secondary(3.184 X .045)

I used a feelerguage to set the ring gap about 1-2" in the cylinder.Usedthe head of the piston to push ring into the cylinder to make sure the ring was prefectly even !

JE Turbo 9.1 Pistons and JE Rings

 

Did you hone the sleeves? Sounds like the rings never seated or the cylinders are seriously out of round.

What is the piston to wall clearance?

 

I hav had the same problem for about a year now. I have asked so many people and get all dumb *** questions. If it would be the rings you would have low comp.
I bet the comp. is good mine was. I have just ripped down the motor agian and come to find out it is either the valve guides or the seals for the valves. 6 out of 16 of my valve seals or guides were covered in oil the others were like they were brand new. The valves are ferrea. Can't tell you exact but 96% I think it will be the valve guides if old or alot of miles on them. or could be the valve seals. I think the machine shop that did by b18c1 head last ^&%$ed it up. hope this helps alot
I know I didn't get any help on the subject.

sorry did not see that comp. was low I may be wrong in your case but if comp. is good the above would aply.


[Modified by vtecpwred, 2:00 AM 1/22/2003]

 

Compression test just shows peak compression. The rings can be unseated and you'll still get decent compression numbers.

What are the specifics on your compression numbers? 130 is the motor cold (shouldn't be trying that)? 180 'wet' ?

 

What is the compression test should be done when the engine is warm!
Noticed today on the highway @4,000Rpm it smokes constsantly.
Have the Ferra Valves and the valve guides replaced already.

Maybe the piston to cylinder clearences are off?
What should this clearence be maybe 4 thousands!

 

Dipstick tube blew out today, no boost either!
N/A for now until I get the smoking fixed.

What is the correct cylinder to piston clearence would be be the problem.
Did not measure when installed! But the ring gapping is correct.

 

are u running a pcv valve? Might want to check that you are as it is very easy to just run a regular tube in its place. Just a suggestion

 

take the engine back to who built the motor. and if you did it..

How about the turbocharger, the seals could be blown, that will cause your car to smoke big time.


[Modified by lazerus, 5:46 PM 1/25/2003]

 

Who did your machine work? I'm willing to bet the bank that cylinder squareness is your problem. Or you could have used some overbore pistons. I know from experience because the first machinist I used dicked me over...car smoked like a chimney when I ripped it. Second machinist I used(1500 miles ago), did a good job and no smoke at all. I havent pulled a compression test yet...but it does not smoke one bit.

Now leaking on the other hand......****** leaks more than the exxon valdeeeeez

 

I have 92 integra rs with stock engine also. I recently put a Turbo on it and mine smokes alot too. I start it up in the morning and it puffs a lil bit of blue smoke for awhile then cleans up. But if i sit for awhile i get a stanky oil smell. That is starting to drive me nuts. when im driving the exhaust is fairly clean but once in awhile it puffs a small trace amount of blue smoke. I did a compression test and i had 160 straight accross all the cylinders. So i suspect it is my valve guides that are leaking? what do you guys think?
Whats the cause for the smell?

And just another lil question. What kind of oil should i be using now that i turbocharged my engine?

 

I would say valve seals.

I rebuilt the motor. I used a large ring gap and i think that has to do with some of the smoking. It failed the compression test also.

I want to re-ring it and replace the headgasket and I should be good. Not going to do the gap so large.

 

Actually, no. If an engine smokes on cold start up, and continues to smoke 'till it warms up, it's the rings. When an engine is cold, the rings are contracted, allowing oil to burn. Once it warms up, the rings expand, sealing against the cylinder walls.

If it were bad valve guide seals, you'd only smoke when you shifted because when you shift, you're at higher RPMs than idle, and when you close the TB, you have a spike in vacuum in the intake manifold. If the seals are bad, you'll suck oil through them when you shift. If you have REALLY bad seals, it'll smoke all the time, but they'd have to be almost non- existant in order for them to allow oil by them constantly.

Also, if your dip stick popped out, that's a strong indicator of combustion pressure reaching the crank case. Time to do a leakdown test to be sure.

 

Acually NO,
When the engine sits overnight or for a long period of time bad valve seals will cause a puff of smoke when started. The oil seaps or leaks down the valves. When started this oil causes it to smoke.

I know this, if you dont believe remove the exhaust manifold after running the engine. The next morning look at the valves and you will see the oil on the valve stems.

I know I have blowby past the rings since it burns oil, smokes out the catchcan from the PCV and the Valve cover breather, and failed the compression test.Did not know if it was the cylinders or the rings.

 

Actually, no.

The oil level in the head doesn't sit that high. It'll drain out down into the oil pan through the two big *** return galleries on the intake side of the block.

 

As in, you have no turbo, or you disconnected the wastegate due to the smoking problem?

Check for PCV system clogs. Just yank the hose off the tube coming out of the valvecover and see how it runs... most of your oil smoking should go away within a couple minutes. You'll probably still smoke at startup if you've got enough burnt crusted oil caked around your rings from a long term PCV problem - your compression test certainly sounds like that's the case.

Then again, it could be the other way around + f_ct rings manifesting as a PCV problem.


[Modified by J. Davis, 8:53 PM 1/26/2003]

 

No PCV have the catchcan


[Modified by crxhybrid1320, 5:11 PM 1/27/2003]