Discussion
2005 to 2009 / 450 BHP V12's, the OEM plug was NGK-PTR6D-13.
The direct cross reference to a FM plug is indeed RC10WYPB4 / 9001 iridium
post 09 i dont think (stand to be corrected) NGK sell a plug directly because the cooler running plug the factory specified for 470 BHP DB9 and 510 DBS was specially developed and only available through Aston dealer. I wouldn't be brave enough to cross reference another plug at the cooler grade if you are 470 BHP spec, but also, i wouldn't fit anything other than OEM NGK
the same goes for Classic Vanquish. The non S plug is available from many outlets, but the S for the reasons above is specially developed cooler grade. Its alarming to cross reference the plugs other makers than NGK specify for an S, then cross reference this plugs back to NGK to find its the same heat range that NGK specify for non S!
in all cases, unless totally sure you are buying the correct grade, always go NGK and if in any doubt, buy from Aston dealer would be my advice
The direct cross reference to a FM plug is indeed RC10WYPB4 / 9001 iridium
post 09 i dont think (stand to be corrected) NGK sell a plug directly because the cooler running plug the factory specified for 470 BHP DB9 and 510 DBS was specially developed and only available through Aston dealer. I wouldn't be brave enough to cross reference another plug at the cooler grade if you are 470 BHP spec, but also, i wouldn't fit anything other than OEM NGK
the same goes for Classic Vanquish. The non S plug is available from many outlets, but the S for the reasons above is specially developed cooler grade. Its alarming to cross reference the plugs other makers than NGK specify for an S, then cross reference this plugs back to NGK to find its the same heat range that NGK specify for non S!
in all cases, unless totally sure you are buying the correct grade, always go NGK and if in any doubt, buy from Aston dealer would be my advice
Mike do you have the part number for the OEM 476bhp plug as NGK only list one plug since 2003 for the V12! Very missleading I guess. But they do have a parts No cross checker http://www.ngkpartfinder.co.uk/cross_reference.php...
old phart said:
Pulled out NGK 5R13 BA
Wise move, the FM plug grade you stated was indeed the wrong heat range.450 BHP DB9 is Aston part number of 07-85126 which is an NGK PTR6D-13 and can be sourced from anywhere.
For 470 BHP DB9, Rapide (Ken!), DBS, V12V and Vanquish S the Aston part number is 5R13-12405-BA. The direct part number from NGK for that plug is not made explicit, so it can not be sourced elsewhere to swerve the Aston Added Tax, but essentially is 1 grade cooler running than a PTR6D-13, which although not made explicit, NGK will likely be selling for other automakers potentially making that plug available elsewhere.
This plug grade subtlety will become relevant in the very near future because for most owners of 470 BHP DB9's and basically any V12 other than a 450 BHP DB9, will be approaching the time for 7 year service and prescribed spark plug change. Workshops everywhere will need to be on their toes not to fit the plug they have been used to fitting over the last 10 years.
Lets pretend all I know is that spark plugs make a little spark that ignites the fuel in the cylinder. Cooler, hotter ...... Once an engine reaches operating temperature and everything under the hood has basically reached equilibrium how can a plug be hotter or cooler? Is it not related to actual temperature? So a cooler plug takes longer to heat up because it dissipates heat faster? But then again once up to operating temp .....
Not being sarcastic or dense on purpose. Just have heard hotter and cooler plugs over the years and never really took the time to figure it out.
Not being sarcastic or dense on purpose. Just have heard hotter and cooler plugs over the years and never really took the time to figure it out.
old phart said:
Lets pretend all I know is that spark plugs make a little spark that ignites the fuel in the cylinder. Cooler, hotter ...... Once an engine reaches operating temperature and everything under the hood has basically reached equilibrium how can a plug be hotter or cooler? Is it not related to actual temperature? So a cooler plug takes longer to heat up because it dissipates heat faster? But then again once up to operating temp .....
Not being sarcastic or dense on purpose. Just have heard hotter and cooler plugs over the years and never really took the time to figure it out.
Interesting question but i'm sure your knowledge is greater than the scenario you portray.Not being sarcastic or dense on purpose. Just have heard hotter and cooler plugs over the years and never really took the time to figure it out.
Because your question shows no concept of spark plug grading for the combustion environment they are used in, instead of me typing out Spark Plugs 1.01 - go here - https://www.ngksparkplugs.com/about-ngk/tech-talk/... - specifically the section on 'Causes Of Overheating'.
I expressed concern for the possible hiccup in workshops if the wrong plug grade was incorrectly fitted. Now that you know all there is to know about Spark plug tip temperature overheating / pre ignition, you can see that if the old spec hot plug was used in the higher power engine, the tip temperature would likely exceed the limits discussed in the tutorial (else why did the factory change the plug??). If i recall, in development / on this V12 engine the hot plug resulted in the condition of 'inlet valve tuliping' if run at high loads for long time (around a race track on track day). Actually, what worries me more than a hot plug in the high power engine is for the owners of some aftermarket V12 Power upgrade cars. There are a few kits on the market, they all take power over 470 BHP (the engine / combustion heat range limit the factory changed the plug grade for) yet few kits show or discuss a plug grade change being required.
Holy thread resurrection!!
Noob here looking at doing this job on my 09MY DB9.
I see that there are now more options on the NGK part finder than there were in 2016, notably the inclusion of the 'upgrade' plug - ITR6F13
Is this the correct plug?
Whilst I'm at it (pushing my luck probably) are there any 3 pin coil packs which are used in other cars which fit DB9, rather than paying Aston Tax for their coil packs?
Cheers 👍🏻
Noob here looking at doing this job on my 09MY DB9.
I see that there are now more options on the NGK part finder than there were in 2016, notably the inclusion of the 'upgrade' plug - ITR6F13
Is this the correct plug?
Whilst I'm at it (pushing my luck probably) are there any 3 pin coil packs which are used in other cars which fit DB9, rather than paying Aston Tax for their coil packs?
Cheers 👍🏻
2005 to 2009 / 450 BHP V12's, the OEM plug was NGK-PTR6D-13.
https://www.gsparkplug.com/1x-ngk-platinum-spark-p...
Shame the coil packs are the 3 pin as the 2 pin one's from NGK are only £12 each, hopefully someone will find a cheaper alternative for the 3 pin type as from AM they are close to £100 each.
https://www.gsparkplug.com/1x-ngk-platinum-spark-p...
Shame the coil packs are the 3 pin as the 2 pin one's from NGK are only £12 each, hopefully someone will find a cheaper alternative for the 3 pin type as from AM they are close to £100 each.
I think, from memory, the coils from Denso are about £20 from Euro Car Parts and are a Toyota fit. You may need to re-use an Aston sleeve. The notion of not being fleeced for £800+ OTT deserves better research!
Sorry to be vague as i thought i had made notes in discovering info, but all i have is this pic. Get sleuthing!
Sorry to be vague as i thought i had made notes in discovering info, but all i have is this pic. Get sleuthing!
According to Opie oil the sparkpkugs for the 470bhp DB9 is this -
https://www.opieoils.co.uk/f/100151/20908/2010/spa...
£7.99 each
https://www.opieoils.co.uk/f/100151/20908/2010/spa...
£7.99 each
Coming back to this thread, those Denso plugs above have a heat rating of 20 which is the same as the NGK rating of 6 on the plugs in the 450 bhp car.
Doing a little more digging I've come across this plug: https://www.sparkplugs.co.uk/ngk-spark-plug-ptr6f-...
This plug looks suspiciously like the ngk ptr6e-13 which is the Aston dealer only plug for our cars....
Doing a little more digging I've come across this plug: https://www.sparkplugs.co.uk/ngk-spark-plug-ptr6f-...
This plug looks suspiciously like the ngk ptr6e-13 which is the Aston dealer only plug for our cars....
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