View single post by redracer
 Posted: 12-13-2023 04:17 pm
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redracer

 

Joined: 09-10-2012
Location: BROOKHAVEN, Georgia USA
Posts: 628
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 Corey: As Art stated, the later engines had the breather tube go from the rear crankcase breather(like yours) to the airbox. The earlier '73 engines had a catch-can separator mounted to the firewall with the breather hose going down to a "Y" pipe where the oil was drained.
When I autocrossed one of my cars, I was allowed to have a catch can, so I built(welded) a rectangular box with an internal angled metal plate and mounted it behind the engine dampener(near the brake booster).
What would happen if your oil was at the full level, on a hard left turn oil would get dumped into the airbox and look like you had "blown" your engine as the smoke billowed out the exhaust pipe, but in reality, your were fine. Before adding the catch can, we would keep the oil level about 1/2 quart below the fill line to avoid this embarrassment!
On the race cars, the ideal place for the breather is the square section on the auxiliary oil pump housing as it is high up and free from oil sloshing into it.
Call/SKYPE/email me if you want more info, bruce/RedRacer