AuthorTopic: Compression Ratio  (Read 9758 times)

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Offline Merlin

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Compression Ratio
« on: May 07, 2005, 20:38:57 »
How do you tell whether your C/R is 8:1 or 9:1.  Needing a years supply of new plugs from the Spring Adventure & the plugs are different for the 2 C/R's.--Cheers--Cogs
1990 RR Vogue SE 3.9 EFI-Auto

Offline muddyweb

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Compression Ratio
« Reply #1 on: May 07, 2005, 20:54:13 »
It is often stamped on the block just next to the engine number.

(nearside, between the middle 2 pistons)
Tim Burt
Muddyweb
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Offline Range Rover Blues

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Compression Ratio
« Reply #2 on: May 08, 2005, 02:23:04 »
Not a cast-iron method of checking but the low compression engines used a dizzy with an external amplifier wheereas the HC engines had the amplifier on the outside of the dizzy body.
Blue,  1988  Range Rover 3.5 EFi with plenty of toys bolted on
Chuggaboom, 1995 Range Rover Classic
1995 Range Rover Classic Vogue LSE with 5 big sticks of Blackpool rock under the bonnet.

Offline Merlin

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Compression Ratio
« Reply #3 on: May 08, 2005, 15:12:51 »
Sorted--9:1--found it on the block as Tim said.--Cheers all--Cogs
1990 RR Vogue SE 3.9 EFI-Auto

 






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