Rattle in your bluebird the engine is a 1800cc SR18DE it timing chain?
The Nissan Bluebird (10th generation, U14 series) offered engines ranging from 1.5 to 2.0 litres, but none of them were the SR18DE engine. The 1.5-litre (GA15DS) and 1.8-litre (GA18DE) engines used timing belts, not timing chains.