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Car Forum / Ford / Ford Falcon / August 2003efi 5l v8 little trick
for those who want a bit of a free power upgrade, Just plug the hose going from the oil filler to the throttle body. its to reburn crankcase gases. for several days now ive been wondering what the hell's been going on with my car, its never had such good pickup before on pedal to the floor acceleration, it was starting to scare me, and that was on gas! I noticed today that my hose was cracked and fell off the throttle body. I will however be fixing it simply because it looks messy. good luck. Short term benefit; the unburnt blowbuy gases (fuel and other by-products) will mix with the oil causing premature engine wear. It not as some think to burn hot oil fumes but the blow buy gases from the combustion cycle.  SignatureRegards Blue Remove Z from email address to reply directly. what about in the old days before emissions laws? they never had such things anyway. > Short term benefit; the unburnt blowbuy gases (fuel and other > by-products) will mix with the oil causing premature engine > wear. It not as some think to burn hot oil fumes but the blow > buy gases from the combustion cycle. Yup they sure didn't. It just vented you outside air or into the aircleaner. Brenden > what about in the old days before emissions laws? they never had such things > anyway. [quoted text clipped - 9 lines] > > > > Remove Z from email address to reply directly. Yes they did in the old days had a vent tube that exhausted the blow by gases using the effect of air passing at right angles to the tube opening. The tube ran from the rocker cover to below the sump so it was at 90 degrees to air flow; my father had one on his EH Holden but we converted it to a PCV system as he never went fast enough to get the air flowing by the tube mouth fast enough to extract the gases. SignatureRegards Blue Remove Z from email address to reply directly. The old system was also referred to as a "road draft tube." SignatureRegards Blue Remove Z from email address to reply directly. See http://www.aera.org/Techside/positivecrankcaseventilation.htm road draft tubes 1st used in 1925. SignatureRegards Blue Remove Z from email address to reply directly. U need to take care with that,as their is every chance the unburnt gases will build up and u will start to blow seals,such as crankshaft seals etc Happened to me (on another car make) when that hose got blocked.Expensive problem Its fine to disable the crap Epa setup but it needs to be done properly..and it can be done. Interested if anyone knows how to do that properly could you not just make some kind of ventilator to vent the gasses to the atmosphere, old v8's just have a filter cap on one head opposite to the oil filler cap on the other head, or did they still have a breather hose aswell? I'm estimating its around a 30kw at the rear wheels difference on gas, the difference is huge. feels more than 98 octane fuel, with 1/4 tank (bugger all weight) and ticked up ignition timing. didn't try it on petrol I'll assume the gains with petrol would be much less, since the engines breathing ability isn't as restricted as with gas. there is much more of a difference with this than I had by completely changing the exhaust for a very low restriction one. > U need to take care with that,as their is every chance the unburnt gases > will build up and u will start to blow seals,such as crankshaft seals etc [quoted text clipped - 3 lines] > it can be done. > Interested if anyone knows how to do that properly |
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