i have a chipped ecu with vtec at 4500 and no redline...with advanced timing, and more complex fuel that makes my car run rich....my b16, when its cold, smokes alot of white smoke...why does it do this? could it be that im runnin rich,or lean? and once in a while ,i accidently, misshift and over rev it pass 8k....and once i even reved it so high that it even stalled my car while i was driving....i dont know why it stalled on me while im reving it...maybe because i reved it so high? wat can happen if the stock b16a revs pass 8k, often? anyone experience wat i experienced?


[Modified by 91HATCH, 6:06 AM 9/13/2002]

 

reving over the rev limiter with out a built head will cause valve float. Very not good

 

valve float?

 

why you think its smoking so much? could it be the ecu?

 

When a valve 'floats' it stays open a little bit too long (cuz those rpms are so high). You're piston is gonna smash into this open valve. At the very least this could bend a valve... Not a good idea to rev past 8k, unless (like SiR_b16rex) you upgrade the valve train a little bit...

It could be smoking because you hit a valve due to over revving. That valve is permanently damaged, and will cause oil to leak down in the combustion chamber. Cuasing smoke.

Or maybe your headgasket is leaking, some antifreeze could be seeping into the combustion chamber...

Either one.


[Modified by MrTodd, 11:19 PM 9/12/2002]

 

i checked for cracked gasket or head....thats fine....

if its oil..shouldn't it be blue or black...not white?

 

Stock B16a's are safe to 8200-8300...

We went a little nutz on my stock b16a with toys <this was with high lift 2000 ITR cams, too>

EDIT: See 8500-8600? That's called VALVE FLOAT, not airflow dropoff.




[Modified by SiR Kid, 12:41 AM 9/13/2002]

 

and what did u do to check it?? also if u keep overreving you WILL float a valve, and the piston will hit it, then in return your retainer will break in half, then your valve will drop, and then your piston will beat it right into your combustion chamber. The end result, the piston will have a whole in it, and your head will be no good. I know 3 peeps that blew their motors that way.

 

yeah you don't want to over rev. I got some nasty pics of a motor that went through my shop from a guy that missed a shift. I will post them tomarrow. I would say get your rev lim. back. I have ctr cams and inner valvesprings and titanium retainers and I have missed a shift and gone well over 11k with no problems.

 

i put back the stock pr3 ecu....i hope the chipped pr3 didn't do any major damage to it.....
does anyone have a b16 with a chipped ecu that smokes alot of white smoke? my oil isn't pancake yet...so im guessing that its not a cracked head or head gasket...
on a really hot sunny day.....it doesn't smoke ....mostly in the cold morning, and cold weather,

my friend has the same setup as me too...and his car does the same thing....but not as much...

 

Holy crap

Yeesh. As for the white smoke, my crx used to do that and my brother's B16 in his crx does that too. I wouldn't worry too much about it. Just make sure you're not burning coolant and oil and you'll be fine.

 

Is your b16 completely stock? A chip with more aggressive fuel maps and such will only really benefit you if you have higher compression, cams, valvetrain, ect...

 

white smoke means that coolent is getting into the combustion chamber. check you oil and look at the color. also check your overflow bottle to see if it purculates, if it does the leak is in the head gasket. maybe your head is slightly misshapened. your chip would not cause the white smoke. white means water. as for reving over 8250 which is what the stock springs are made for. if you continuely go over that they will eventually aneal and become less strong and float valves at say 7grand instead of 8900. if you plan on using stock cams, just get some itr intake springs and do the usually swap to exhaust thing.

derek

 

Be careful Im guessing you have a 1st gen b16a not good over revving on that single spring.

 

if you have a stock b16 , theres reall no point to rev past 8 becuz you proly arnt putting down any power after 8 anyway.

 

As far as the white smoke goes, water tends to collect in the exhaust system if you tend to just drive short trips. The smoke could just be the water burning off. If you are not losing coolant, I wouldn't worry about it.

 

Just a dumb idea, but if you think you're losing coolant, and it doesn't seem as green as before check your head gasket.

Let your car cool, pull your rad cap off, start your motor. If you see little bubbles come up, your head gasket is shot. Go to pepboys.

Good luck.

 

Stock b16a head can handle 9K. Anything much over that and you will drop a valve. I have done it on a misshift and it is not pleasant. It will ruin you day to say the least.

 

yeah that smoke u get in the morning is condensation burning off in your exhaust system. i dont think its your headgasket because it would burn white all day..

 

today was a hot day...no white smoke....

so im guessin its nothing to worry about....who here has a 1st gen b16 with the same problem?

 

Man, when I was driving tonight I think I experienced valve float at 7500. Normally I don't rev past 7000, but I was having a little fun and thought I'd take it to the 8000 limit. Right when it hit 7500 it was like the power just cut off--suddenly the rpms just dropped.

Do you think I did any damage? Is it something I should be worrying about, as long as I don't shift past 7000 again?

 

sounds more like you hit the rev limiter.

 

This happens when you overrev a b16a too many times... THe timing belt starts to hate you when it repeatedly stops and gets tugged around from the valves hitting the pistons too many times.

 

I was told that if you miss a shift you stand a good chance of throwing a rod. Is that true?