Grey Motor Spark Plugs

[Burnsy]

Does anyone have the different plug numbers for grey motors for the different manufactures eg Champion NGK Motorcraft Holden?

Is there any difference between them and are there any different grades of plugs available that are particularly recommended?

Thanks,
mike

[gp]

Hi Mike,
You can use Bosch W10FC, NGK BP-4, Denso W16S-U.

Hope this helps.

Cheers,

Graham. :)

[zulu]

Graham, Or anyone, do you have the listing for Preslite brand plugs, as I have a box full of # 14 82 knowing my luck they will be lawnmower plugs.

[Jodstar]

There is a good article in the N.S.W FE/FC web page
that might help,it also describes a variation in spark
plug reach as the early heads used shorter plugs. ::)  

[Burnsy]

I have found that I keep comming across boxes of cheap plugs at different places ($1 each) and want a definative list so I don't end up like Zulu ;)

[fastjbav6]

The 132 & 138 take different sparkplugs.
I'll look up the part numbers and do a cross referrence for you Mike.

Regards  Seb

[Burnsy]

Thanks Seb, would be good to have all the numbers in my wallet for reference next time I see some.

Jodstar, could you post a link to the page you are talking about please I can't find it  :'(.

[Jodstar]

Sorry Burnsy,I had the wrong site. The address is as
follows...http://www.geocities.com/ssehcc/plugs.html
It is the South Sydney Early Holden Car Club and a
good article written by Alan Trass with another on
ingnition timing.
                                       Cheers Jodstar  :)

[robbzfc58]

something from "vesta"spark plugs tech specs   aug 1957       their codes were simple to understand..i guess others use codes that mean something too??
VH = VERY HOT         H = HOT             M= MEDIUM
C = COLD          VC =VERY COLD
FIGURES INDICATE THREAD SIZE  10  ,14  ,18=  mm
 78x=7/8''SAE        12G=1/2''GAS TAPER
FINAL LETTER INDICATES REACH  S=SHORT 3/8''
 Â L=LONG3/4''         G=GAS TAPER
vesta says for holden to mid  1956  h14s  after that     m14s for motors in good nick with different plugs for motors that run hot or burn oil
in 1957 the oppositions equivelent was (for the later greys)
 Â champion=j8.h10
 Â klg   =tfs50
 Â  bosch  =w145t3
 Â  lodge  =can14
 Â pyrox   =14bs
 Â ac       = 45, 46com
simple  aye ???
 Â trev
 Â       

[Burnsy]

Thanks Trev but I think that info has just made me less dumber than when I started ;)  If you use different grades of plugs for different engine condition, which grade is better for older oil burning motors, hotter?

Got a pic of me current car on my profile though ;D
Hopefully will get a better one on Sundays run.

Update on what I have found out:
138 Grey
NGK BP5S, Champion J10YC, Bosch W10BC

132 Grey (FE FC only, not FX FJ as it seems that the earlier ones had a different reach of 3/8 rather than 1/2)
NGK BP4, Bosch W10FC

The number realtes to the heat rating, with Bosch and Champion, lower number equals lower running temp and with NGK higher number equals lower running temp.

The site that Jodstar identified suggests that with running on fuel with no lead in addition to higher road speed combining to decrease overall engine running temperatures, we should be opting for lower heat rating plugs.  Any comments or observations from anyone who has tried this or actually knows about this would be good ???

Question still stands for which is better for a older smokey engine though.

[robbzfc58]

your onto it  burnsy.....hot for oily motors & cold for over heating motors........toldya it was simple :-/
hey  you got a name for ya car...how about "kermit"!!
can ya post a pic of it?
         cheers  trev

[Burnsy]

Try my website for a look at the car, only one and a half pictures loaded as they are huge files and I got sick of waiting.  The father in law just bought a 8mega pix camera and the photos are very clear but too big unless you are planning on printing out posters to wallpaper your room with..............what was that Trev, you do want to print out posters to wallpaper yuor house with  ;D

[RET]

If you don't have access to Photoshop, which has an excellent built in tool for this (File/Save For Web...), either of these tools is the shot:

Mac: "Downsize" http://www.stuntsoftware.com/products/downsize.htm
PC: "IrfanView" http://www.irfanview.com

Both of these offer simple methods to create a copy of an image, reduced in physical size and JPEG quality to get them down to reasonable sizes.

cheers
RET

[fcfromscratch]

Hi Burnsy,

I can recommend irfanview as a good cheap tool for reducing picture sizes for web posting.....

I'll show you how to do it sometime......

Brad

[fastjbav6]

Burnsy,
the following is from an 1991 Champion Catalogue Number 5 Issue 2.
EJ,EK,FB-------------------------------------RJ12YC/J12YC
NORMAL ENGINE- FE,FC,FJ,FX-----------J18YC
WORN ENGINE-----------------------------UJ12
 Â          CROSS REFERENCE CHART
MOTORCRAFT TO CHAMPION
A32-----------------J12YC
A42-----------------''      ''
A42C---------------''      ''
A42CU-------------''      ''

ND-DENSO TO CHAMPION
W9P-------------J12YC
W9P-U----------''      ''

FROM BOSCH 1990/91 ISSUE 20
 Â                             BOSCH SUPER        BOSCH RESISTOR
FX-EJ 3/8 REACH              W10FC                       WR10FC
 Â                   CROSS REFERENCE CHART
BOSCH OLD PART NUM              BOSCH NEW PART NUM
W95T6                                                             W10FC

AC DELCO TO BOSCH
C44S-----------W8FC

NGK
BP5S

FROM CHAMPION CATALOGUE 1985/86

AC TO CHAMPION
43S-----J10Y/J12YC
M43S---''             ''
B43S---''              ''
44S-----J12Y/J12YC
C44S---J11Y/J12YC

BOSCH TO CHAMPION
W10F-------J12Y/J12YC

NGK TO CHAMPION
BP5S----J12Y/J12YC

NIPPONDENSO TO CHAMPION
W17P-U--------------J10Y/J12YC

KLG TO CHAMPION
FS15M---UJ12/RJ12C
FS20-----''               ''
FS30-----''               ''
FS35P---J18YC
FS55P---J12YC
FS65P---''      ''

Hope this helps you out.

Regards  Seb

[EJ_Dave]

The type of driving you do should be considered when choosing your spark plug heat range too. For long trips or in hotter areas cooler plugs than the originals are probably worthwhile.  If, like me, most of your driving is the 10k each way daily commute between home and work (in chilly Canberra) the orginal hotter plugs are probably the best bet. With the cooler plugs my grey motored EJ ran like a pig for just that bit longer. Replacement of the 72C thermostat with an 82C one helped too. If I was driving to QLD next summer I might swap the plugs and thermostat for cooler ones.

David

[peterwmh]

That's some handy info!!  I looked at the plugs I pulled out of a 132 FJ motor I recently sold, it had 3 different plugs in it!!  It has Champion J-12Y, an AC 46, and another plug with no markings.  This one has a flat porcelain 'tube' with two green rings but no writing whatsoever, I wonder what that one is??

Cheers

Peter