good info

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mike1114 &raquo;</TD></TR><TR><TD CLASS="quote">between 300-400whp here...depending on gear......

I needed two catch cans. The one off the back of the block would fill up after a couple hard pulls. I added the second catch can and now the one from the back of the block doesn't fill up as much.

It has to do with the velocity of the air coming out of the catch can lines. More hoses/vents makes the velocity lower in each line so it will have less chance of picking up oil as it exists the motor. Also, some have a problem with when the oil sloshes to the back of the pan, it travels up the oil galleys and out the fittings on the back of the block.


Its -12 an like I said.

most likely will not vent enough but each motor is differnt so try it!!</TD></TR></TABLE>


you are way off........

the oil does not come back up from the pan and out the breather hoses....

you do realise there is oil being distributed to the head.... which then has to drain back to the pan...in order to be recirculated through the engine.....

when you accelerate..... the oil that is in the head....gets thrown to the back of the head(closer to the firewall), then obviously it cant stack up... so it goes down the oil drain holes...which happen to be the same holes you guys have your catch cans hooked into...... the pressure created by the crank swiging/pistons going up and down, then pushes the oil right out and into the catchcan.............. the pressure in the engine, doesnt allow the oil to drain back properly, because its trying to escape out of the same holes the majority of the oil is draining back from..........

doesnt seem very smart now...does it....


the absolute best spot for your breather fitting is in the FRONT and up as high as possible........ wheres that you might askk........ the front of the valvecover..... oh yea.... and it has a baffle too....even less chance of filling up an entire catch can after 1 pull.

z10 needs to take that idea back to the drawing boards....(along with a few others............. )

***good thing i graduated from Rocket Science 101, i might have never figured this out.... hahahahahhahahahahaha ***

goodmorning HT

 

and dave, -10 a good size?

 

yesm' -10 is perfect

 

word

 

Run (2) -10AN lines off the front of the valve cover and you will be Golden. Just like..... "when dominic drives, he's Golden. All the kids come in the shop and buy what he has, and they pay CASH!"

-end fast and furious quote.

 

yeah thats what i am doing... does it matter how far away the actual catch can is.. i was going to run the can on the firewall, with 2 90* fittings off the valvecover, then around the motor to the can.

would that work?

 

Most guys I see the Catch cans are somewhere on the pass/tranny mount area. Considering you wont hardly get any oil (fluid form) in the can due to the lines coming from the FRONT of the valve cover and being baffled, a high percentage of any accumulation will be just vapors. So, to answer your question, i would say no, not to much as you are getting mostly vapors. If it was vented elsewhere where alot of oil itsself was being blown out, then yes, it needs to be mounted LOWER than where the the ports are. HTH

 

cool, i have always had a catch can setup, just wanted to make sure it was done right on the new setup.


thanks waaaaaaaaaaade

 

great thread cause I've filled up my catch can in a couple of pulls and it was pouring out of it before I realized it was full.