2.0 Vx 16v - Rocker Cover - Baffle Plate

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DaveMorris
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2.0 Vx 16v - Rocker Cover - Baffle Plate

Could anyone explain why some 16v Vx Rocker Covers have this type of small baffle (small one)

Whereas others have a full plate that looks like this

 

and covers the majority of the cover . .

And more importantly - what version should a dry sumped engine have ? 

Thanks in advance, Dave.

DaveMorris
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Ahh - further research shows that the small plate is probably the SBD mod for "high revving wet sumped engines"

Link http://www.sbdev.co.uk/Info_sheets/Oil_systems/VX%202L%20SBD%20Cam%20cover%20breathing%20modification.pdf

But still don't know what is best to use on a D/S engine.

D.

ECR
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The small plate

The oe (large) plate holds too much oil in it. The small plate allows oil to drain back to the sump at higher revs ....

DaveMorris
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That's good enough for me. Thanks Roger.

Can now go and refit rocker cover so she's all boxed up for the night.

Kpcseven
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So a question, what was the purpose of all of the rest of the plate that is now discarded?

ECR
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The OE baffle plate is there to condense oil vapour which it does effectveley on a standard engine. In the Seven install, the engine generally revs a lot higher than "normal" and the baffle plate isn't able to cope with it. This results in a greater amount of vapour/oil being dumped in the now "non standard" catch tank. There is also probably(but I can't remember) a re breathing system on the OE install instead of the Caterham catch tank.

Kpcseven
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Very interesting. Thanks!

ECR
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Its a good mod on wet sumped engines and works the same on dry sumped ones