Model year vs production year clarification for engines

TheMrFailz · Post by **TheMrFailz** » 15 Sep 2018, 20:13

In viewtopic.php?t=53446 the post mentions* that the 2002-2003 5 cylinders had slightly improved internals (namely thicker rods) allowing the engine to make 340bhp and over reliably. I didn't want to bump a 6 year dead thread so I figured I'd ask: Are those years production years or model years? I ask because I've got an '02 model year V70 (2.4t) and I wasn't sure if I got the improved engine or not.

*The paragraph specifically:

RN Series Inline 5-Cylinder 2002-2003
The later RN block from 2002 and later received a longer rod that was also stronger. From 139.5mm in early block, to the 147mm rod in later blocks. This design change not only strengthened the rods by virtue of design improvement but also by the nature of the rod duration. Longer rods stay at TDC for longer periods which extracts more power from a given air/fuel charge. This added benefit, along with the lighter valve train and better flowing heads, allowed these engines to safely make upwards of 340bhp reliably.

Post by **RickHaleParker** » 16 Sep 2018, 02:34

The production of the N, RN and RNC overlap. Volvo introduced the new and phased out the old.

The B5244T3 is a RN.
2001-03 S60 2.4T
2000-03 V70 2.4T
2001-02 V70XC 2.4T.

TheMrFailz · Post by **TheMrFailz** » 16 Sep 2018, 08:15

RickHaleParker wrote: 16 Sep 2018, 02:34 The production of the N, RN and RNC overlap. Volvo introduced the new and phased out the old.

The B5244T3 is a RN.
2001-03 S60 2.4T
2000-03 V70 2.4T
2001-02 V70XC 2.4T.

Is that the later RN (listed as 2002-2003 in the original post) with the stronger/longer connecting rods?