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[ngrainqey]

well all i can say is that according to parkers the auto 2.0 is only supposed to do 121 ish which i found to be true and then when i swapped them to the denso plugs i had 130 an i'd seen 125 a few times without half as much effort! so maybe it was plugs being buggered but i know something.. when i changed them and started it i got alot of oil burnt off!

[TheBoy]

I'm with the others - if you noticed an improvement, it was because your old plugs were shagged.  Much like fitting some new super duper wiper - it must be a better design as you can now see in the rain

Saying that, I do fit iridium plugs to her Rover, but that is because that is what they specify for some reason...

[Marks DTM Calib]

I'm with the others - if you noticed an improvement, it was because your old plugs were shagged.  Much like fitting some new super duper wiper - it must be a better design as you can now see in the rain

Saying that, I do fit iridium plugs to her Rover, but that is because that is what they specify for some reason...

K series cylinder temps are stupidly high.....its yet another one of the many things that helps insure they always have fresh head gaskets!  

[TheBoy]

I'm with the others - if you noticed an improvement, it was because your old plugs were shagged.  Much like fitting some new super duper wiper - it must be a better design as you can now see in the rain

Saying that, I do fit iridium plugs to her Rover, but that is because that is what they specify for some reason...

K series cylinder temps are stupidly high.....its yet another one of the many things that helps insure they always have fresh head gaskets!  

According to people in the know, that is the primary reason for HG failure - apparently its run right at the temp limit before some kind of reaction happens between head/block/gasket.

[ngrainqey]

why not just use those twin spark(like on alfa's)/twin electrode spark plugs on her rover TB

[TheBoy]

why not just use those twin spark(like on alfa's)/twin electrode spark plugs on her rover TB

I shoved in what the manufacturer specifies - K series is an engine you stick to what Rover says

Oddly, possibly unrelated, but the pot on which her HG failed was the one that had a faulty plug....

[ngrainqey]

lol fair enough!
could have been compression related as to why the hg went then

[Marks DTM Calib]

why not just use those twin spark(like on alfa's)/twin electrode spark plugs on her rover TB

Totaly different setup....they have two spark plugs (although some have the equivalent of two plugs integrated into one)...and hence two sparks per cylinder