pw8757 Posted March 27, 2010 Share Posted March 27, 2010 Folks, I need to know the CR of my 1998 3.9efi. Haynes specifies two variants, high and low compression and gives the values. However, I don't know which mine will be. Vehicle number is WA784670. I want to think high - (ie 9.35:1) but need to be sure...................... Quote Link to comment Share on other sites More sharing options...
jad Posted March 27, 2010 Share Posted March 27, 2010 I think im right in saying it should say under the engine number on the side. certainly does on a carb 3.5 sitting at home Quote Link to comment Share on other sites More sharing options...
pw8757 Posted March 27, 2010 Author Share Posted March 27, 2010 Thanks for this. However, the block is away at the engineers for work (they asked the question and I said I'd get on the forum). Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted March 27, 2010 Share Posted March 27, 2010 Engine number will tell you, not sure you can do it from the chassis number, and risky as the engine could have been changed.... Quote Link to comment Share on other sites More sharing options...
pw8757 Posted March 28, 2010 Author Share Posted March 28, 2010 I'm the second owner - engine has definitely not been changed..................... Quote Link to comment Share on other sites More sharing options...
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