Welcome to Just Commodores, a site specifically designed for all people who share the same passion as yourself.

New Posts Contact us

Just Commodores Forum Community

It takes just a moment to join our fantastic community

Register

304 5L spark plug gap

GTP 85

291 hp @ the wheels
Joined
Aug 23, 2006
Messages
1,462
Reaction score
21
Points
0
Age
35
Location
Murray Bridge S.A
Members Ride
MY04 WRX, VS SSenator & VS V6 track weapon
Hi all... simple question

What have you guys found to be the best spark plug gap for the 304 v8?

Tried a few different gaps and mine seems really sensitive to even the smallest reduction in gap.

at the moment i have them at 1.2mm, seems to run the best
 

Boonz

Donating Member
Joined
Jul 27, 2005
Messages
4,042
Reaction score
46
Points
0
Age
32
Location
berri, south australia
Members Ride
green 355 VG ute
what plugs are you using? ive got mine gapped at 1.3mm in my ute, seems to be happy there
 

Mirkz

New Member
Joined
Apr 19, 2010
Messages
479
Reaction score
3
Points
0
Location
WA
Members Ride
GSXR1000
Bump! - Anyone know the gap for the VT, being the same motor, I'd assume it's the same gap ?
Got new plugs to put in (just some NGK R's which I don't believe are anything top of the wozza) just wanna know whether I have to do the gap myself or if they should be okay to plug and play :)
Hoping to do it today!

Cheers
 

wez84

Member
Joined
May 10, 2010
Messages
272
Reaction score
1
Points
16
Location
Rockhampton QLD
Members Ride
ve ssv/vr calais V6 turbo oneday N/A Track car
The NGK BP5FS are the way to go I think they have a 1mm gap which is fine.
Some people run there gap down to .8 and some run 1.2mm iv found it never made a great deal of difference.
 

Mirkz

New Member
Joined
Apr 19, 2010
Messages
479
Reaction score
3
Points
0
Location
WA
Members Ride
GSXR1000
Cheers wez,

will just run these plugs for the moment which are the BPR6EF ones I think, figure if my current ones are cactus.. these will be more than a good step up.
Will get better more expensive plugs when I'm chasing much bigger performance.
 

wez84

Member
Joined
May 10, 2010
Messages
272
Reaction score
1
Points
16
Location
Rockhampton QLD
Members Ride
ve ssv/vr calais V6 turbo oneday N/A Track car
Sorry the NGK number i said waz for the carby 5L, The ones you have are right but still have the 1mm gap the BP5FS have a 1.5mm (carby) .
Dont fall in the myth of more expensive plugs such as iridium plugs are better for performance they only last longer.
NGK even say this on there web site.
 

Mirkz

New Member
Joined
Apr 19, 2010
Messages
479
Reaction score
3
Points
0
Location
WA
Members Ride
GSXR1000
ah well, $5 a plug I'm happy with, beats $20 !
 

VrWagz1

The Wagon on Wheels..
Joined
May 5, 2008
Messages
2,438
Reaction score
29
Points
48
Location
wollongong
Website
www.wagzhome.justcommodores.com.au
Members Ride
VE SSV MY09 Auto Wagon
I run 1.1mm, on platinum plugs. I basically run them cause i cant be assed changing plugs every 10k. These ones have done 50k so far and i really dont feel as if they need looking at yet. With ABS its just a pain to to the Driver side.
 
Top