Crankcase Pressure. FREE HP!

[dragpac]

does anyone make a cap or do you need to fab something up?

 

[Thereaper]

I run no separator and change oil every 8k with zero oil usage between changes. I run the hell out of my car every time I drive it. Is my engine fucked up or is it just running properly ?

 

[Boozshey]

cfm has the oil filter cap if that's what you are talking about.

http://mustang.c-f-m.com/index.asp?PageAction=VIEWPROD&ProdID=2160

 

[05bluestang]

Yup thats what I got on mine (holy big pic Batman)

 

[Big Daddy]

For the past 500 miles I have been running the K&N breathers purchased from Summit and no oil leakage.

 

[Racer X]

Hey those are black, just what I need. Do you have a part# for those?

 

[Big Daddy]

Hey those are black, just what I need. Do you have a part# for those?

They are the K&N chrome, painted.

I scuffed them with red Scotch-brite, used adhesive promoter, primer, and Hard Hat Gloss Black.

 

[CandyRedGT]

Lots of good info here.

 

[UltraKla$$ic]

Lots of good info here.

Yea, clear as mud!!

 

[2to3threE]

i will try this out since i am boosted, see what happens.

 

[06whipple]

I don't have a catch can or breather setup...since I stopped hard deceleration (I always push the clutch in and use the brakes now) I don't use any oil.

 

[2to3threE]

my car drives quite a bit better with a breather on the oil cap, and both valve covers, its pretty damn nice, engine seems more responsive and not as stressed i feel a bit of acceleration difference too.

 

[908ssp]

Breathers are a half step. A better step is to create a vacuum. This can be done with a pump or a check valve. Peterson makes the check valve seen in NASCAR. You run an open large line from both valve covers to the check valve from there into a large air oil separator breather box and from there to the vacuum side of the supercharger.

 

[CandyRedGT]

Breathers are a half step. A better step is to create a vacuum. This can be done with a pump or a check valve. Peterson makes the check valve seen in NASCAR. You run an open large line from both valve covers to the check valve from there into a large air oil separator breather box and from there to the vacuum side of the supercharger.

Does anyone have a schematic/photos of a setup like this???? Sounds like the supreme fix to the problem!!!

 

[2to3threE]

my valve covers where into my intake and supercharger, the idea is NOT to run hot contaminated air into the combustion chamber. breathers working much better for me.!

 

[CandyRedGT]

my valve covers where into my intake and supercharger, the idea is NOT to run hot contaminated air into the combustion chamber. breathers working much better for me.!

So you have a breather on each valvecoverf...correct? What part 3#..etc. What do you do with the hose to the intake? Does this need re-tuned due to no additional air into the manifold...etc? Thanks

 

[fdjizm]

Ah yes, the oil cap delete.

 

[908ssp]

my valve covers where into my intake and supercharger, the idea is NOT to run hot contaminated air into the combustion chamber. breathers working much better for me.!

Actually the idea is to run a vacuum in the crank case. This allows the rings to seal better which helps keep the vapors cleaner. The pistons have to push less air if you maintain a vacuum in the crankcase and a good deal of HP is lost in pumping air in and out of an open breather system. So much that the pros run a extra pump just to pull a vacuum in the crankcase. The air oil separator a large one not the poopy little cans you see for sale allows any oil vapor to drop out of suspension so only clean air enters the intake and the amount of heat is negligible compared to the amount of cool air the engine takes in .

I have seen the effect of this on Ducati bikes on the dyno. Now I'll grant you that the Ducati twin is particularly susceptible to this because the pistons actually both go in the same direction during parts of their stroke so they displace a lot of air. But when people remove the check valve and run a K&N filter on the crankcase breather they loose hp. They gain hp by running the check valve and then into the air box where there is a slight vacuum.

 

[TheKurgan]

I was searching for a vacuum pump to put on mine and found this LOL...

http://www.boobybits.com/mustang-nipple-enlargement-kits.shtml

Ahem, so anyway ...Is anyone running a seperate vacuum pump ? I can't really use the SC vacuum since I have a centri. I'm not too keen on running long hoses to the exhaust. Although I don't think putting that hot air back into the intake is going to heat things up that much, but you're displacing oxygen with the fumes too.

 

[2to3threE]

Actually the idea is to run a vacuum in the crank case. This allows the rings to seal better which helps keep the vapors cleaner. The pistons have to push less air if you maintain a vacuum in the crankcase and a good deal of HP is lost in pumping air in and out of an open breather system. So much that the pros run a extra pump just to pull a vacuum in the crankcase. The air oil separator a large one not the poopy little cans you see for sale allows any oil vapor to drop out of suspension so only clean air enters the intake and the amount of heat is negligible compared to the amount of cool air the engine takes in .

I have seen the effect of this on Ducati bikes on the dyno. Now I'll grant you that the Ducati twin is particularly susceptible to this because the pistons actually both go in the same direction during parts of their stroke so they displace a lot of air. But when people remove the check valve and run a K&N filter on the crankcase breather they loose hp. They gain hp by running the check valve and then into the air box where there is a slight vacuum.

so what you are saying is a breather in place of an oil cap is killing hp?