Hi Guys,


I have a 420 EFI SBC that is based on a MiniRam II intake manifold.

The PCV system is plumed in a similar manner to the stock TPI system. The only difference is I have a Moroso Air/Oil separator between the PCV valve outlet and the Intake Manifold vacuum port.

The valve covers that I am running are the "tall" Proform Slant Edge part number 141-927.


1.
The car originally was MAF (1987) based and I converted it to SD (1990).

The specified 1987 PCV is a Fram FV184.
The specified 1990 PCV is a Fram FV191.


What is the difference in the above valves?


I am presently running the FV184. Wondering is this is a mistake?


When I converted to SD, I never thought to investigate the PCV differences.


2.
I am presently storing a fair amount of oil in the Air-Oil separator.


The good news is the device works.


The bad news is the air/oil separator fills up sooner than expected and the engine then burns the oil.


Given a 25 mile data log run, I may get up to 5 Oz to 6 Oz of oil in the Separator.


It seems like the baffles in the valve covers are poor. They are just pieces of metal that are attached to the valve cover.


Are these Valve Covers known to have poor oil control baffles?


Is there a simple modification to "fix" this situation?


Best Regards,


Bruce

 

Just compare the stock VC baffle and the Pro-Form VC and Moroso baffle (this isn't the baffled grommet, is it?). That will answer your question regarding sketch baffles.

Do you have a fresh air source for the PCV system?

 

The fresh air source is the Throttle Body. The same port as a stock TPI uses.


Presently, I am using the standard Proform sheet steel baffle. Not sure if the Moroso baffled grommet is any better? It had crossed my mind to order one and see what happens.

I am loosing ~4 Oz of oil in 23 miles. According to the Air/Oil separator drain. The can is not very big. If 5 Oz of oil is in the can, the engine starts to ingest the oil.

Best Regards,


Bruce