BenzBoy
Grand Master
During this week I had a look at a Peugeot 308 engine that is dismantled for a top end rebuild. The water jackets are beautifully designed to cool the cylinder walls and some real thought has gone into ensuring there are no hot spots in that area. Not so much though has gone into the plastic guide rails for the timing chain though - they are so flimsy that they broke, letting the timing chain run wild and requiring a head rebuild. Mileage? Around 40,000K. Jaguar also used flimsy plastic guide rails with many 4 litre engines requiring a head rebuild at very low mileage - and the repair kit comprises metal guides, not plastic.
Is there some moronic engineer working his way through various companies advising them to use plastic guide rails? Arguably plastic is quieter but I doubt that the difference is discernible - cheaper I guess. I'm sure Sean will have a view on this.
Regards,
Brian
Is there some moronic engineer working his way through various companies advising them to use plastic guide rails? Arguably plastic is quieter but I doubt that the difference is discernible - cheaper I guess. I'm sure Sean will have a view on this.
Regards,
Brian