PN 322684, what is the purpose of this?

This topic has 2 replies, 3 voices, and was last updated 7 years, 2 months ago by kerry.

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January 17, 2019 at 5:31 pm #163880
johnyrude200
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It is a filler block on early 80’s V4 intake manifolds. Is this simply to keep oil/fuel mix from pooling up behind the leaf valves?

It’s #54 on the diagram in the link below. Pulled apart a V4 for parts and saw these, was wondering what they were for.

http://www.marineengine.com/parts/johnson-evinrude-parts.php?year=1984&hp=90&model=E90TLCRD&manufacturer=Evinrude&section=Intake+Manifold
- This topic was modified 7 years, 2 months ago by johnyrude200.
January 18, 2019 at 12:10 am #163917
garry-in-michigan
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Lifetime Member
Filling in the block also boosts the crankcase compression a bit to push a little more fuel through the engine to get a little more horse power. . .
- This reply was modified 7 years, 2 months ago by garry-in-michigan.
January 18, 2019 at 8:10 am #163928
kerry
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US Member
Ah, yes. The old “stuffing the crankcase” trick.

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