After i put my 2.9 pulley am i gonna need a step colder plugs? if so ... how hard is it to change plugs on the lsj

 

its a tyipcal 4cyl... right one top

easiest car i have ever done plugs on.


I suggest the NGK BKR7e's gapped at .40

 

yes i would go 1 step colder plugs and they are very easy to replace

 

Easy as pie to change, and it's not going to hurt anything to change them!

T-30 torx (star) for the cover, 10mm ratchet for the coil packs, and a spark plug socket, and 6" extension to get the plugs out!

Get NGK BKR7E's and gap them at .036-.040 and you will be set!

 

or.. word of advice.. its an aluminum head... do the plugs when the engine is cold.

 

kool. Thx guys.

 

Which ones are the plugs that already come pregapped? Where can i get them?