Indexing Spark Plug Tutorial FREE MODS

GarasiAuto brings you another quick HOW To's on how to correctly (Indexing) your spark plugs to increase burn efficiency thus better combustion for your car. Some engine may produce some gains after this modification is done ,Well hey it's a free mods , who doesn't want to try it out. Today's project is on R20A1 Honda engine that has done 70K's on the clock. What we are trying to achieve here are the ground electrode lip of the spark plugs Positioning Away from the intake manifold .

Step 1 : Remove all spark plugs from the engine 

Inspect all the spark plugs 

(Corrosions are normal from normal use)

Step 2 : Use wire brush & sand paper to carefully clean the carbon builds up 

(Carefully do not scrape the tip of electrodes)

Step 4 : Get some paint or markers to mark the side of the spark plug following the tip of the spark plug

(This marking is a guide to see where the tip of the spark plug when its sits inside the block)

 The Results : 

Depending on spark plug models & usage, 

some plugs may have to use some new washers to seat it perfectly

Cylinder 1 :

Cylinder 2: 

Cylinder 3:

Cylinder 4:

Place everything all together and your done.

Start the engine & feel the difference.