Did you delete your PCV stuff. On your drag car
03-08-2009, 09:46 AM
#1
9 Second Club
Thread Starter
iTrader: (34)
Join Date: Mar 2005
Location: SPRINGFIELD MISSOURI
Posts: 2,248
Likes: 0
Received 0 Likes
on
0 Posts
Did you delete your PCV stuff. On your drag car Just wanted to know if you guys deleted your pcv lines and just used breathers off the valve covers or did you use a catch can. Can anyone post some pics up to.
I was thinking of just taking all mine off and capping the intake. And buying the small breather for the valve cover ports and use one k&n for the oil spout.
This is a iron block with a fast intake n20 motor. Any opinions.
I was thinking of just taking all mine off and capping the intake. And buying the small breather for the valve cover ports and use one k&n for the oil spout.
This is a iron block with a fast intake n20 motor. Any opinions.
Trending Topics
03-08-2009, 11:06 PM
#9
11 Second Club
Join Date: Aug 2005
Location: Tampa, FL
Posts: 804
Likes: 0
Received 0 Likes
on
0 Posts
At WOT there is no vacuum. You'd only have more ccp (crank case pressure) at idle and midrange. I deleted mine and after 30k miles my leakdown was no higher than 10% after testing all 8 cylinders.
-Mark
-Mark
03-11-2009, 09:36 PM
#12
TECH Fanatic
iTrader: (23)
Join Date: Feb 2002
Location: Ft. Worth, TX
Posts: 1,011
Likes: 0
Received 0 Likes
on
0 Posts
Here's my opinion, and I recently went thru this on my car.
If you don't run any vacuum from the crankcase, you are leaving vapors in there that break down your oil. So you need to check/change oil way more often.
I'm running a hose with a catchcan from the valley to the intake. I have had problems with oil getting past the can into the intake, so I recently added a pcv valve in there. I haven't driven it much to confirm it, but I'm sure the valve is going to stop the oil from being sucked in when the throttle body is mostly closed, by regulating the amount of vacuum. Later on I'd like to get a vacuum pump on there.
Also, you can supposedly pick up power by scavenging pressure under the piston, but I have seen the issue debated.
If you don't run any vacuum from the crankcase, you are leaving vapors in there that break down your oil. So you need to check/change oil way more often.
I'm running a hose with a catchcan from the valley to the intake. I have had problems with oil getting past the can into the intake, so I recently added a pcv valve in there. I haven't driven it much to confirm it, but I'm sure the valve is going to stop the oil from being sucked in when the throttle body is mostly closed, by regulating the amount of vacuum. Later on I'd like to get a vacuum pump on there.
Also, you can supposedly pick up power by scavenging pressure under the piston, but I have seen the issue debated.
03-12-2009, 09:10 AM
#14
11 Second Club
Join Date: Aug 2005
Location: Tampa, FL
Posts: 804
Likes: 0
Received 0 Likes
on
0 Posts
Here's my opinion, and I recently went thru this on my car.
If you don't run any vacuum from the crankcase, you are leaving vapors in there that break down your oil. So you need to check/change oil way more often.
I'm running a hose with a catchcan from the valley to the intake. I have had problems with oil getting past the can into the intake, so I recently added a pcv valve in there. I haven't driven it much to confirm it, but I'm sure the valve is going to stop the oil from being sucked in when the throttle body is mostly closed, by regulating the amount of vacuum. Later on I'd like to get a vacuum pump on there.
Also, you can supposedly pick up power by scavenging pressure under the piston, but I have seen the issue debated.
If you don't run any vacuum from the crankcase, you are leaving vapors in there that break down your oil. So you need to check/change oil way more often.
I'm running a hose with a catchcan from the valley to the intake. I have had problems with oil getting past the can into the intake, so I recently added a pcv valve in there. I haven't driven it much to confirm it, but I'm sure the valve is going to stop the oil from being sucked in when the throttle body is mostly closed, by regulating the amount of vacuum. Later on I'd like to get a vacuum pump on there.
Also, you can supposedly pick up power by scavenging pressure under the piston, but I have seen the issue debated.
-Mark
03-12-2009, 09:37 AM
#15
Track car, you should be changing the oil every track trip. Use regular oil, no synthetic, just strait old motor oil, change the oil and filter every tirp. Now, with that being said, you now no longer need to concern yourself with comtaminents. Start the engine and warm it then change the oil, to get all the comtaminents into the oil.
I run a set of nasty valvecovers, with a -10 an line running across both covers to a moroso catch can. Eventually a vacum pump will make it's way on the car, where I will run the -10 line to the pump then a line to the can ( did this way to make the pump install later easy) At that point it will pretty much be sealed again, but for now the breather setup is working fine, no oil in the intake at all, plugs look cleaner now then they did with the PCV system as well.
I run a set of nasty valvecovers, with a -10 an line running across both covers to a moroso catch can. Eventually a vacum pump will make it's way on the car, where I will run the -10 line to the pump then a line to the can ( did this way to make the pump install later easy) At that point it will pretty much be sealed again, but for now the breather setup is working fine, no oil in the intake at all, plugs look cleaner now then they did with the PCV system as well.
