Why do the f4r engines blow the spark plugs

[car.crash]

Just wondering why the f4r engines like to blow spark plugs out?
is this a case of the wrong plug used, over revving, cross threaded plugs etc
is there a pattern to why they fail or just crap luck?

 

[Jaff.]

It's French

 

[Dan@SJM]

Over and under torquing.

 

[VXR killer]

First ive heard of it tbf

 

[Fred@BTM]

its not just that engine, so many home mechanics and so called professionals DON'T use a torque wrench whilst fitting, we've seen it on all sorts

when a spark plug has a bloody torque setting on the box USE IT!

 

[car.crash]

For anyone using the search,
can someone supply the torque setting on here please

 

[Fred@BTM]

28nm

 

[harry289]

Is 28nm 100% correct? Done a search and some say 24nm and someone else said hand tight and 1/4 turn?

 

[BIGASH]

I've always done mine to 28nm and *touchwood* never had a problem

 

[hipwell]

I'm sure the box for my NGK prf6e10's did say on the box finger tight then quarter a turn.

I wasn't happy with that so tested with a torque wrench and they were pretty much bang on.

 

[Dan519]

Is 28nm 100% correct? Done a search and some say 24nm and someone else said hand tight and 1/4 turn?

according to the NGK site, 24-28Nm