5 replies to this topic

[Steve-O 2014]

Which spark plugs should be used in a 1000cc high compression engine? Would you stick with  'BP6E S' plugs?

 

It currently has 'B8E S' plugs fitted by the owner but have been told that these are the wrong plugs by the person who set it up for us.

 

The only thing is I dont know what has exactly been done to the engine... If it has uprated cams etc will it still be ok to use the BP6E S plugs? 

 

Thanks

 

 

[racingbob]

my car has 11.1 and it runs great on ngk bp7es

 

its 220 on each pot on the compression tester

 

probably bit high but not a daily car

 

been on dyno with those plugs

[KernowCooper]

Drive the car and do a plug reading and read the earth electrode as see if its heat path is correct, My 1330 runs 10.2:1 and runs ok on BP6ES

[cal844]

BP6ES will run virtually all A series engines

[hamiltonraceengines]

If running a high compression, perhaps run a colder plug to compensate. KernowCooper saying 6'swhicj work well. Try 7's and see what they look like after a good few hundred miles

[Steve-O 2014]

Thanks, Switched all for stock grade plugs