OIL SEPERATOR CAN PCV
- Thread starter Simon
- Start date
Sinovac
GT Owner
2112
Blue/white 06'
Beez
GT Owner
How does a guy decide if the car really needs one of these? Is there a certain amount of boost/power that makes it more important than for a stock set up?
Kingman
GT Owner
Sinovac
GT Owner
Ford modular motors are known to pass quite a bit of oil through the passenger side PCV hose.
The Grey Ghost
GT Owner
BlackICE
GT Owner
PeteK
GT Owner
Why? I did the track day at Rally 12 and did not lose any oil. I can't see that I would drive it that hard on the street.
Kingman
GT Owner
For those owners have a car that is using oil - *maybe* a catch can will help if that oil is from classical blow-by (as opposed to leaking, etc.)
Just ask yourself one question.... if you are not losing any oil, what are you going to catch?
Too many people are giddy that they're catch-can is working when they pull a couple of tablespoons of black murky liquid from them. Many times this is mostly comprised of a complex substance called H2O and would be burned without consequence by the engine. On a stock GT - or one with a common pulley/tune kit, my opinion is that there is absolutely no need. No doubt, someone will be jumping in to say how wrong I am. Don't bother. If you want me to show the calculations of how silly they are, I can.
Just ask yourself one question.... if you are not losing any oil, what are you going to catch?
Too many people are giddy that they're catch-can is working when they pull a couple of tablespoons of black murky liquid from them. Many times this is mostly comprised of a complex substance called H2O and would be burned without consequence by the engine. On a stock GT - or one with a common pulley/tune kit, my opinion is that there is absolutely no need. No doubt, someone will be jumping in to say how wrong I am. Don't bother. If you want me to show the calculations of how silly they are, I can.
Kingman
GT Owner
:bow OK, fair enough Kendall.....I'm silly.
I will strive to refrain from posting and/or purchasing anything and wait for your future pronouncements forthwith. Will these edicts be coming once a month, a quarter, yearly, or simply your whimsy?
Sinovac
GT Owner
This thread has some good reference pictures:
http://www.fordgtforum.com/forums/s...cooler-Oil-Vapor?highlight=Oil+on+intercooler
http://www.fordgtforum.com/forums/s...cooler-Oil-Vapor?highlight=Oil+on+intercooler
twobjshelbys
GT Owner
I concur. I had one on my supercharger in my Mustang and after 8000 miles of spirited driving it had only a teaspoon. It amounted to a few drops every thousand miles. The speed shop guy at Shelby American said it this way: If you have anything more than a very small amount in it then you have a bigger problem. Maybe that's OK. But if you're getting lots of engine oil blow-by certainly there will be other indications.
It won't be in the supercharger, it will be in the intercooler. I had to pull my supercharger to rebuild the bearings and the supercharger and intercooler was clean.
Think about it: If it were essential then wouldn't Ford have put it on there to begin with?
We've pulled many GT Superchargers. (A prerequisite to installing a pulley/tune which is likely one of the most popular GT mods in GT-land.) Some look like the pic that sinovac posted, some are fairly dry and most are in-between.
But let's look at the that catch-can "results" referenced in that older thread. In that picture... it sure doesn't look like 1/3 cup, but let's pretend that it is. What horrors are we really subjecting the engine to?
Author of that thread "Caught" 1/3 of a cup across 5000 miles
1 cup = 48 teaspoons; 1/3 cup = 16 teaspoons
1 Teaspoon = ~100 drops; 16 teaspoons = 1600 drops
1600 drops across 5000 miles = 1600/5000 = 0.32 drops per mile (oh the tragedy!)
Assumption: GT is averaging 16 mpg
1 mile = 1/16 gallons of gasoline is consumed
128 ounces per gallon
1/16 gallon = 8 ounces
8 ounces = 48 teaspoons
1 teaspoon = 100 drops
Conclusion: GT @ 16 mpg (avg) burns approximately 4800 "drops" of gasoline per mile
While the engine is consuming 4800 drops of fuel/mile, the catch can "saved" the engine from having to ingest 0.32 drops of blow-by.
Viewed differently, had this been forced down the throat of the engine, compared to fuel being consumed, it represents 0.32/4800 = .0000666; or .0067%
Not all that compelling to me to spend money to solve a problem that simply doesn't exist.
(I think the argument changes when you talk about bigger boost from Whipples or turbos as the added pressures will definitely increase blow-by and it *may* get it into the range where you want to be pro-active about it.)
But let's look at the that catch-can "results" referenced in that older thread. In that picture... it sure doesn't look like 1/3 cup, but let's pretend that it is. What horrors are we really subjecting the engine to?
Author of that thread "Caught" 1/3 of a cup across 5000 miles
1 cup = 48 teaspoons; 1/3 cup = 16 teaspoons
1 Teaspoon = ~100 drops; 16 teaspoons = 1600 drops
1600 drops across 5000 miles = 1600/5000 = 0.32 drops per mile (oh the tragedy!)
Assumption: GT is averaging 16 mpg
1 mile = 1/16 gallons of gasoline is consumed
128 ounces per gallon
1/16 gallon = 8 ounces
8 ounces = 48 teaspoons
1 teaspoon = 100 drops
Conclusion: GT @ 16 mpg (avg) burns approximately 4800 "drops" of gasoline per mile
While the engine is consuming 4800 drops of fuel/mile, the catch can "saved" the engine from having to ingest 0.32 drops of blow-by.
Viewed differently, had this been forced down the throat of the engine, compared to fuel being consumed, it represents 0.32/4800 = .0000666; or .0067%
Not all that compelling to me to spend money to solve a problem that simply doesn't exist.
(I think the argument changes when you talk about bigger boost from Whipples or turbos as the added pressures will definitely increase blow-by and it *may* get it into the range where you want to be pro-active about it.)