Thread: White smoke from breather and oil drops formed

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If you can get access to a bore scope camera that will fit in through the spark plug hole (check rental places), you can determine wether the cylinder is glazed or scored. If the cylinder is glazed the BonAmie trick will break the glaze and allow the rings to seat. If the cylinder is scored, you probably have some broken rings and a tear down is in order.

Originally Posted by 36 sedan

If the cylinder is glazed the BonAmie trick will break the glaze and allow the rings to seat.

An easy way to introduce the Bon Ami cleanser is to put a couple of teaspoons in a spray bottle, fill with water and shake it well to mix in the powder. Start the engine, work the throttle with one hand and spray into the carb intake with the other. Gives an even distribution and leaves very little residue behind. This is just the way I've seen/heard it done in the past, and it works.

Altho I haven't used the desolved in water method-It does work good at getting the BonAmi into the cylinders---however I never used it that way because as a liquid it won't do what you want, and also will vaporize from combustion heat and leave the cylinder too quick. The powder way is best, and you can do it with anything that will dispense it gently-like a salt shaker type device--------I wouldn't use over one box of it at a time without giving the engine a breather of a few runs without it-


Also, taking it easy on an break in doesn't put as much pressure on the rings/cylinder walls as moderate applied power so make some intermediate runs thru the gears------If it continues to smoke, use it to disperse mosquitoes and other bugs til cold weather gets here!!!!!!!!!!!


With those three cylinders being on same side of motor I'd probably go ahead on pull the head------

Originally Posted by jerry clayton

Altho I haven't used the desolved in water method-It does work good at getting the BonAmi into the cylinders---however I never used it that way because as a liquid it won't do what you want, and also will vaporize from combustion heat and leave the cylinder too quick.

When the water evaporates the powder in suspension (not really dissolved - it's an abrasive dust) is left behind, just like pouring the dust in directly. No skin off my nose, but the water method is effective. I got the tip from an old mechanic back in the 60's.

Roger I agree that it isn't desolved----and that the Bonami is left behind, however, from past experience, the water going thru the intake tends to puddle and run to low points on the route, leaving the Bonami behind, it isn't as effective as gently shaking the powder into the air stream where it travels as airborne dust into the cylinders


Either way will get some in there and maybe will help
But with the issue of the royal purple oil mix, I don't have much hope, its going to need to be rehoned with a plateau type process with a Sunnen CK 10 and new rings








And I like the Cragar SS symble in your new avator!

I believe Jerry is correct, we were doing this trick before synthetic oils arrived. This may be a start over, at the very least the cylinders need to be inspected first via camera or head removal. If broken rings are scoring the cylinders more damage will be inevitable by continuing blindly.

Yeah, I'm in total agreement that the Royal Purple mix was not a good choice - too slick. I think if it were in my driveway I'd try the Bon Ami and see if it can perhaps break any glazing that may be there. Can't hurt at this point, and there's a chance. First I'd change the oil & filter, using a good straight weight oil and maybe some ZDDP additive.

Roger, I agree with you, with an exception; I would look inside the cylinders with a bore scope first. Cheap insurance to prevent damaging new pistons and requiring a re-bore. Having said that, I'll step aside...

Originally Posted by 36 sedan

.........I'll step aside...

Me too....

Would not clocking the piston rings during assembly cause this much blow by?

Originally Posted by Jakemstar

Would not clocking the piston rings during assembly cause this much blow by?

I'm sorry, I assumed you had more experience with motors, your above question leads to me to believe there maybe more serious problems with your build. I would suggest you get and study a book or two on engine building before continuing any further. You may have missed several very important steps in your motor assembly process.

Originally Posted by Jakemstar

Would not clocking the piston rings during assembly cause this much blow by?

Yes, not clocking the rings gives the cylinder pressure an open path to the crankcase.

Originally Posted by 36 sedan

I'm sorry, I assumed you had more experience with motors, your above question leads to me to believe there maybe more serious problems with your build. I would suggest you get and study a book or two on engine building before continuing any further. You may have missed several very important steps in your motor assembly process.

Sorry, but I agree there's a potential for a lot more issues. Clocking the piston rings is a very basic step in the assembly process.

To be honest with you im quite young and this is my first rebuild. Ive put an insane amount of time and research into this as youd assume, however, yes im very "cherry" lol. And again to be honest im impressed with how far ive come. I understand your frustrations as i probably should have said this right off the bat, however im trying to be taken seriously especially when coming onto forums like these with a bunch of extremely expirienced people like yourselves. I have made a few very simple mistakes yes, but that does not exclude me from getting some guidance. Im sorry if you feel as though youve wasted your time but i really do appreciate all input. Im constantly learning and knew when i took this project on i was getting in over my head. I found the best machinist in the area and have been working closely with him. Luckily he has been very patient with me but im at the point now where the motor is in my truck and its not very easy to just call him up and try to describe my problems to him over the phone. Thats why i have turned to these forums for help. Im young with minimal expirienced but have always been at least a little mechanically inclined. I took interest and have been fascinated with these things since i was a boy lol. I just never had the chance to try it out for myself. Now the i have the money and time for it i figured id give it a try. Again im sorry if anyone feels they have wasted their time

I understand that not clocking the rings can cause issues and im not denying at all i missed that step, however if im going to tear this down again to adjust the rings i want to be sure that this would definetly cause as much blowby as im seeing. Especially being its all on one side of the motor. Crazier things have happened im sure but i just want to be sure

Originally Posted by Jakemstar

Again im sorry if anyone feels they have wasted their time

No blood, no foul. No one's saying it's been a waste of time, but clocking rings is a basic step that cannot be overlooked. It's possible that you got more random "stagger" in the gaps on the other five cylinders if you didn't pay attention to spacing them equally around the pistons.

Stick around and keep posting. No telling what I might learn from someone's answer to your questions.