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General TR Rocker cover identification please.

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Hamish Racing

Hamish Racing

Jedi Knight
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Does anyone know if these rocker / valve covers are standard or after market accessories

could be Standard Triumph era
Or swallow Doretti ( that’s what the under hood/bonnet pic I found)

I have taken a chance on eBay for my 3a as it looks period.

help welcomes what would the 3 holes be used for ?
2 one side one the other

if it fits I can block these up.
H
 

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It's not Triumph, but it looks like it will work. You will need a vent in the cover, as the Triumph uses a road draft crankcase vent system, which needs to suck in the valve cover and out of the draft tube on the bottom rear left side of the block.
 
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