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SDT1DYI · 12-13-2020, 11:31 AM

I wrote to our Divisonal tech director as to installing a Mororso type oil seperator. Was told, not legal for stock if it did not come as an OEM item for the year and make of your vehicle in Stock Eliminator.
Baffles help, but if there's no performance gain, why do this?
The question to answer is , how much vacuum does the motor hold on the starting line and what is it down track?
All the comp guys run one or two vacuum pumps. Increasing crankcase vacuum is proven to make more power.
Benifits are diminished with lower Hg vacuum numbers. Besides ring seal, all the engine gasket sealing surfaces and crankshaft seals effect crankcase vacuum. There are special crankshaft seals designed for vacuum service as well.

Steve Teeter. STK/SS 620

12-13-2020, 11:31 AM	#4
SDT1DYI Member Join Date: Nov 2016 Location: Indianola Washington Posts: 403 Likes: 0 Liked 455 Times in 147 Posts	Re: PVC and catch can question I wrote to our Divisonal tech director as to installing a Mororso type oil seperator. Was told, not legal for stock if it did not come as an OEM item for the year and make of your vehicle in Stock Eliminator. Baffles help, but if there's no performance gain, why do this? The question to answer is , how much vacuum does the motor hold on the starting line and what is it down track? All the comp guys run one or two vacuum pumps. Increasing crankcase vacuum is proven to make more power. Benifits are diminished with lower Hg vacuum numbers. Besides ring seal, all the engine gasket sealing surfaces and crankshaft seals effect crankcase vacuum. There are special crankshaft seals designed for vacuum service as well. Steve Teeter. STK/SS 620