What's blow by????

[St0lenR]

?????????????

[sebastianHoff]

when the turbo shats oil into the hot pipe or down the dp.

[1439/2000]

when the turbo shats oil into the hot pipe or down the dp.

No, compressed fuel and air mixture burns in the cylinder on the top of the pistons. When the rings become tired and worn they allow some of this compressed and burning mixture to leak past and escape into the crankcase. That is called "blow by".

[HalfBaked]

I had blow by...

Lots of it.

I had a blown piston ring tho...

[St0lenR]

i've heard a lot of different opinions before so....which one is it??

[1439/2000]

i've heard a lot of different opinions before so....which one is it??

What I posted. lol

[RUFFIAN]

very true. I'm going through the same thing on my motor.sh!t sux

[Sam]

He is right about the blow by. Means your rings are going bad, or a ring lance has broken if it's excessive.

[BABY J]

Just check your exhaust pipe.... too oily or you can see oil on the driveway (at the muffler) when you start your car then congratulations, you have been blown by! LOL

[Vteckidd]

blow by is caused by differnent things ,not just piston rings or ring lands.

what it is is excessive oil or pressure is getting by the rings an getting to the exhaust valve.

normally there are 2 types:
Piston rings are going bad, or the ring gaps are stacked on top of each other , an oil gets by the comrpession ring an pushed out the exhaust valve causing the smoke to come out your tail pipe.

Valvestem seals can cause blow by as well, if they are worn out or not seling, oil will get by the seal an drop down past the stem an valve guide, causeing it to go out the exhaust.

usually, on turbo cars, excessive pressure from the turbo can actually push oil by the rings on the pistons an create blow by effect. If you run forged pistons, you must have a clearance of 2-3 thou more than a cast piston to make up for the amount of "expansion" the forged piston does, if your clearance is too big, youll get blow by.

same with ring gap, if its too wide, blow by.

[BABY J]

Mike is my hero. No seriously... he is. No I'm not kidding... he is. Why are you smiling, I am DEAD serious... HE IS!!

[SPOOLIN]

i wouldnt worry about blow by unless you are smoking like a freight train.

my latest build that i just decommissioned had ZERO blowby, it was pretty wierd. i had the line off the valve cover and NOTHING was coming out, air, oil, i just left it open haha. I could open the oil cap and look down in to the valve cover and see the cam spinning without getting air or oil shot in my eye. It was very calm inside, like a storm was coming inside the head. lol

[BABY J]

... deep in the heart of Texas.


Had you added that phrase to the end, you'd be considered a poet. ALMOST son, almost.

[SPOOLIN]

aint it the truth!!

[BABY J]

aint it the truth!!

I will help you....




BLOW-BY

By SPOOLIN

My latest build that i just decommissioned had ZERO blowby...
it was pretty wierd.
I had the line off the valve cover and NOTHING was coming out, air, oil, i just left it open haha.
I could open the oil cap and look down in to the valve cover, and see the cam spinning without getting air or oil shot in my eye.
It was very calm inside, like a storm was coming inside the head...

deep in the heart of Texas.




Wow... beautiful man, beatiful.

[SPOOLIN]

man i just laughed out loud here at work !!

[BABY J]

Was that you integ at MS? (the one on the far left in the bay). I didn't get to say hey when I was there yesterday

[Vteckidd]

nah thats ILOVEBOOSTS integra

spoolin owns the white EG hatch it wasnt here, he was just dropping off a car for us to tune, one of his customers

[BABY J]

Yeah I have seem SPOOLINs ride before. Good stuff, good stuff.

[SPOOLIN]

nah thats ILOVEBOOSTS integra

spoolin owns the white EG hatch it wasnt here, he was just dropping off a car for us to tune, one of his customers

and lets just say the turbo kit on that car i dropped off isnt something i condone. I built the motor, not the turbo setup. :rolleyes:

[scttydb411]

how long did it take you guys to get it off the trailer after i left? any casualties?

[scttydb411]

oh...i thought blow by was paying $20 for someone to slob on bob...

[SPOOLIN]

we jacked up the rear with a big piece of WOOD. CAME right off.

[1439/2000]

I will help you....




BLOW-BY
By SPOOLIN

My latest build that i just decommissioned had ZERO blowby...
it was pretty wierd.
I had the line off the valve cover and NOTHING was coming out, air, oil, i just left it open haha.
I could open the oil cap and look down in to the valve cover, and see the cam spinning without getting air or oil shot in my eye.
It was very calm inside, like a storm was coming inside the head...

deep in the heart of Texas.







Wow... beautiful man, beatiful.

+1! :lmfao:

[BABY J]

we jacked up the rear with a big piece of WOOD. CAME right off.

My big piece of WOOD CUMS right off too, wait a minute... WHAT AM I SAYING!!???

[sebastianHoff]

No, compressed fuel and air mixture burns in the cylinder on the top of the pistons. When the rings become tired and worn they allow some of this compressed and burning mixture to leak past and escape into the crankcase. That is called "blow by".

i thought he was talkin about the turbo oil seals leakin, my bad.