Turbo sparkplugs?
03-02-2009, 10:48 AM
#30
BDC Motorsports
03-02-2009, 10:50 AM
#31
BDC Motorsports
B
Edit: I'm referring to the NGK BUR9EQ plugs and not the GReddy ones.
Last edited by BDC; 03-02-2009 at 11:04 AM. Reason: Clarification
03-02-2009, 11:15 AM
#32
NW Florida TURBO
Join Date: Feb 2008
Location: Navarre FL, In my boosted 8...
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hey guys just putting this out there i got a rx8 with the greddy turbo and i'm running the RX7 trailing plugs (5255-BUR9EQP) as my leading and i got stock RX8 trailing plugs (6701-RE9BT) as my trailing this way i don't have a need for any shims or washers. I haven't really had any problems untill recently i had a few missfires, i got and installed the BHR ignition kit and got one missfire but i think i just need to change my plugs all over again or just give them a good cleaning.
03-02-2009, 12:54 PM
#40
This is what i get
plug 20.4mm
hole 22.0mm
end of hole is not flat but tapered down towads the opening giving a 23mm depth at the edge of the opening into the combustion chamber .
Last edited by Brettus; 03-02-2009 at 01:11 PM.
03-02-2009, 02:19 PM
#46
BDC Motorsports
THEN, take a picture of it from the inside of the housing and see where the end of the plug is with respect to the depth of the plug land. Easy.
B
03-02-2009, 02:24 PM
#47
BDC Motorsports
You've seen what? What damage to the wall of the rotor housing? I'd love to hear the explanation on this one.
03-02-2009, 02:29 PM
#48
The trailing plug hole has a "tapered" seat. The "face" of the plug contacts the wall of the housing while there is still .5mm or so of space between the seat and the plug hole "shoulder".
When you screw a 13b plug into that hole, it comes to the back of the plug hole opening in the combustion chamber, but it is not seated on the shoulder.
Applying torque to the pug to "seat" it puts pressure on the wall of the chamber.
Under engine load and heat, this surface deforms.
When you examine that area around that plug hole on an engine that has used the 13b plugs in that position, you find scuffing of the surface and corresponding damage to the apex seals.
When you screw a 13b plug into that hole, it comes to the back of the plug hole opening in the combustion chamber, but it is not seated on the shoulder.
Applying torque to the pug to "seat" it puts pressure on the wall of the chamber.
Under engine load and heat, this surface deforms.
When you examine that area around that plug hole on an engine that has used the 13b plugs in that position, you find scuffing of the surface and corresponding damage to the apex seals.
03-02-2009, 02:31 PM
#49
NW Florida TURBO
Join Date: Feb 2008
Location: Navarre FL, In my boosted 8...
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thanks MM, people should know to just listen to those with the most experiesce around here and if not just research sparkplugs.com website tell you all the info/specs on any plug you need for every set up