Also ordered a catch tank as I want to remove and redesign the standard recircul
ating oil breather setup. Inducted oil mist does nothing for healthy engines, it reduces the effective octane rating of the mixture in the chamber and makes a mess of nice shiny throttle bodies etc. etc. The car is also going to be tracked heavily so I don't want to run the risk of sucking in lots more oil mist than usual and laying down clouds on corner exit - it won't have a Cat to scrub most of it out either! New setup is going to use a remote mounted catch tank with a single entry and breathing to atmosphere via a cotton gauze filter. Catch tank will be fed from the standard breather outlet - it's not going to be anything fancy but it'll work! If needs be I can look at using engine vacuum to put the tank under vacuum and scavenge crank case gasses this way but I don't see this as being neccesary as the F4R 830 24 Hour endurance race engines I have built have managed perfectly well with purely atmospheric pressure catch tanks.
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgr4Q5nuUDiSE2JlDxxdQmVaOK2ex-jLOWtSnCC1DP0s73HZpFE6Y8EQsC9apw_juCZN5VqdBTcdF-gJGRP5EvSWK1bTiiOUzAVkSpHd4b_EsZGd2QAihqgvnzadY6Ns190ZMA49mn7rK0/s320/Catch-Tank-lg.jpg)
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