i have a b16a completely rebuilt with ctr pistons, cams, springs, retainers... and all new bearings and gaskets and when i drive it every once and a while it just dumps white smoke out the exhaust... the motor only has like 30 miles on it so far could it be that the rings have not seated yet? any thing else?

 

moisture being pushed out is also a possibility...not like a blown head gasket but its a normal process in the exhaust and even in the engine itself. i would assume the rings arent set completely tho.

 

it could be but it smells like burning oil to me

 

Is the smoke white and thick or blueish and wispy? One is coolant/moisture the other is oil.

 

it is more white and thick... not blue at all

 

thats coolant, blue is oil.
could be a headgasket that is cracked or if the head bolts (or studs, in the ARP case) could be in properly torqued.

 

its not just condisation from being cold is it?

 

it did that on two of my friends car , but stoped after like 100 or so miles. let it break in and then if it still does it then start panicing.

 

well the smoking has gotten a little bit better but seems to smoke now only on very hard turns or bumps... is there any reason for this

 

Just wait awhile and take it very evry easy on your motor, seems that it just needs ot seal, but dont make something really og wrong by gettin on it before the motor is broken in.

 

weird, i never had this problem with any of my built motors. right now i have only 139 miles on my motor and since the first time i cranked it, i never had any smoke at all. IMO, if it seems like it's coolent smoke, check it soon!! oil is normal but coolent isn't. coolent isn't suppose to be in the piston chamber.

 

I like the part about panicing...hheheh

Just don't let it get to the part when "DANGER TO MANIFOLD" constantly blinks on your laptop.


[Modified by EKFerioHawaii, 8:27 PM 4/2/2003]

 

cl4,

you never made any comment as to why you rebuilt the motor. You also never made any statement as to whether or not you had the cylinders bored, or honed at the least. More details are needed.

Let's take the first option here. Did the first or "original" motor blow?
If it did, It could have dumped coolant, oil or any number of other fluids into your exhaust, which will stay there, until burned or blown out. They like to hide in cat. convertors a long time too.

Second option, did you buy a used motor, and stick pistons in it? If you did, the rings are probably now SHOT, because they are making new grooves in an old cylinder. The cylinders tend to 'egg shape' or distort in some fashion from time to time, and is perfectly normal, as long as it does this to rings and pistons that were in there from day one. If you had a used motor, and put new pistons in there, and the new rings are trying to seal to a distorted surface, you will prematurely wear them out. I hope you had enough knowledge to do this before installing new pistons.

This is just my 2 Cents worth.
Scott

 

Another thing,

Did you replace the oil supply regulator for the head? IS it pu tin right side up?

Some thing to think about.
Groove on my man!!

Danger to manifold?? BWAhahahaha. Lessee some manifold danger!!! This would be cool!!! I can't fathom the idea...

Scott AKA CRneXt

 

sorry for not being clear...

the original motor did not blow i just wanted more power and it is a 91 so it was some what tired. there is no cat either.

the pistons are oversized pct and the machine shop bored the cylinders and installed the pistons for me with the honda rings that came with the pistons

i had a few buddies look at and smell the smoke and they think that it is fuel and it is running way too rich... i am running a mugen chip in the ecu and have yet to install the vafc so maybe that will help

 

uhh im not sure me and a friend assembled it could you be specific on this im not sure exactly what it is...thanks

 

While everyone says coolant is white and oil is blue that is not always true. If you look at a car that is burning alot of oil it is white but has a faint blue hue to it. From the rearview mirror and at a glance it looks pure white. If he was burning anti-freeze he could simply check and see if he is loosing any.

Also you say it happens more when you turn a corner or bumps, almost sounds like valve seals.

 

the rings prolly didnt seat.

 

I bet your burning oil. Mines does it too. I rebuilt my B16 with CTR slugs and it smokes like a champ (white smoke) only at certanin times though. Usually if I come to a stop afer high rpms and do a hard launch it will puff a nice cloud. Crusing around there is no noticible smoke but when I get on it, it puffs. BTW I have a punched cat. I have to add oil about every 600 miles or so but the motor pulls hard. I never lost a drop of coolant. Just watch the oil level. You might want to retorque the head bolts after 1000 miles.

I bet you installed the piston rings wrong like me . Never put the top compression ring with the gap facing either the intake manifold or exh side of the cyl. I can't remember which one.


[Modified by Phat_Optimo, 3:06 PM 4/4/2003]

 

i am a bit concerned i changed out the $.99 bosch plugs with NGK's and the #1 plug was toast it was so cacked on with crap i dont think it could even fire... so put in the NGK's and no more smoke for the day until i went threw the twisty roads and pooof there goes the smoke again so now what have like 300 miles on it now so i dont think its the rings

 

Your leaking oil in that one cly for some reason. I'm thinking it's the valve seals. All the oil goes to that side of the head and floods down the valve guide. Who knows but a copression and leakdown test coud pinpoint the problem.

 

it does make sense but i hope it is not the seals. when i went to order them from honda they did not have enough so the machine shop said they have some they use all the time with no problems...bastards

 

if it is the valve seals let me know i think i have a brand new oem honda set here from a gasket kit i had bought i am in so cal also

 

Now it only smokes on hard left turns and only left turns... and it smokes for like 1 min really hard then stops untill i turn left hard again... any ideas?

 

I think that nsxmatt is right it sounds like a valve stem seal that is leaking. My friend and I just replaced the ones on his crx this past weekend and it is not very difficult. I would suggest replacing the seals and seeing if that corrects the problem.