Volvo RWD 444-544 Forum

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B18 B or D? 444-544

posted by  Phil S. on  Fri Feb 10 08:21 CST 2006
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last visit: Fri Oct 24 13:18 CST 2014
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Um, I don't have the numbers available, but the 108HP 1800S motor is the B18B. With the dual downpipe, unified manifold it's 115HP.

The B18D made 90HP with the separate manifolds and 95HP with the unified one.

The only difference between the B and D is the thickness of the head. B measures 3.425" thick, producing a compression ratio of 10.0:1. D is 3.465" thick for a CR of 8.7:1. I believe both heads are the same casting and have all the same markings -- I don't know of any way of telling them apart without measuring.






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New B18 B or D? [444-544]
posted by  DADS544  on Wed Feb 8 04:53 CST 2006 >


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