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3.9 compression ratio

Tech Talk for Rover owners.

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Joined: Thu Dec 13, 2007 6:06 pm
Location: newcastle

3.9 compression ratio

Post by geoffro068 »

Hi I am wondering if anyone knows how they get the two different compression ratios with the 3.9 rangie engine? Mine has the low 8.13:1 and want to step it up while I have the engine apart. I asked a few landy people I know but thay didnt know. Do thay have different dish in the piston crown or smaller combustion chambers in the heads?
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Joined: Tue Jan 22, 2008 3:30 pm
Location: Central Coast NSW

Post by armbrup »

Different pistons.
Regard sphilip A
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Joined: Mon Feb 16, 2009 4:47 pm
Location: Canberra ACT Australia

Post by phtest »

Yea different piston and the crown is altered too, if my memory serves me.
Paul
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