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Old 11-22-2006, 02:08 PM   #1
AXA
Scooby Newbie
 
Member#: 35566
Join Date: Apr 2003
Location: Miami Fl.
Vehicle:
2002 STI WRX GT30R
WRC Blue

Default Built motor STI EJ25 with EJ20 Heads plugs Qs..

What plug do you need for this engine combinations.... I am a little confuse...
Normal WRX plug or STI standard size plug.....

STI EJ25 with normal WRX EJ20 heads....
STI EJ25 with Type C heads
STI EJ25 with JDM big ports head non AVC..


Jose
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Old 11-22-2006, 05:44 PM   #2
PeteDucati
Scooby Specialist
 
Member#: 44629
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: '04WRX-Axis ej257, IPT 4eat.
Vehicle:
CNC 'd heads, cams
DB18g/EWG - F/S $8K

Default

WRX head uses the WRX plug. The STi and WRX heads differ when it comes to spark plug thread depth. Basically you use what ever plug the head normally uses.
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