Discussion
Got an hour ior two to kill? ...... Old thread about plugs
Buying from a reputable supplier should hopefully avoid fakes....... Opie Oils
Buying from a reputable supplier should hopefully avoid fakes....... Opie Oils
Don't discount Denso as an option, Denso are NGK's biggest competitor and are another Japanese spark plug giant making excellent plugs, in 2015 Denso released their new TT range of spark plugs that have enjoyed some rave reviews.
http://www.sparkplugs.co.uk/denso-iridium-tt-spark...
The Denso Iridium Twin-Tip Technology (TT) are the latest innovation in spark plug technology, NGK have admitted it's the way forward but are at least a year behind Denso only just having started making plugs with this system available on the Japanese market. So if you to enjoy the benefits of this new iridium twin-tip technology in the UK today you'll need to select the Denso TT product, the Denso TT part number for the Rover V8 is IW16TT.
http://www.sparkplugs.co.uk/denso-iridium-tt-spark...
http://densott.com/?utm_source=densoautoparts-irid...
https://www.youtube.com/watch?v=FC6VaS4kHGM
http://www.sparkplugs.co.uk/denso-iridium-tt-spark...
The Denso Iridium Twin-Tip Technology (TT) are the latest innovation in spark plug technology, NGK have admitted it's the way forward but are at least a year behind Denso only just having started making plugs with this system available on the Japanese market. So if you to enjoy the benefits of this new iridium twin-tip technology in the UK today you'll need to select the Denso TT product, the Denso TT part number for the Rover V8 is IW16TT.
http://www.sparkplugs.co.uk/denso-iridium-tt-spark...
http://densott.com/?utm_source=densoautoparts-irid...
https://www.youtube.com/watch?v=FC6VaS4kHGM
I’m so suspicious of anything purchased online these days I think next time round i’ll Use a local parts factor just in case as fakes are getting difficult to spot.
At least you can complain in person.
Personally I chose the Iridium tip simply because of life expectancy as I used to do a lot of miles so changing plugs every 5000 miles is a bind. I still check them mind so!
If I expected to drive 2-3000 miles a year i’d Probably stick with standard 6 grade to be honest as the Iridium are expensive.
Noticeable changes on 6 grade,
From cold engine clears it’s throat quicker
Cleaner burn at lower revs and less soot or none at all when looking at the plugs.
My car responds well to them.
I think the car feels more responsive on them but that’s just opinion. Hard to say but I really like them.
At least you can complain in person.
Personally I chose the Iridium tip simply because of life expectancy as I used to do a lot of miles so changing plugs every 5000 miles is a bind. I still check them mind so!
If I expected to drive 2-3000 miles a year i’d Probably stick with standard 6 grade to be honest as the Iridium are expensive.
Noticeable changes on 6 grade,
From cold engine clears it’s throat quicker
Cleaner burn at lower revs and less soot or none at all when looking at the plugs.
My car responds well to them.
I think the car feels more responsive on them but that’s just opinion. Hard to say but I really like them.
I've long been an advocate of iridium plugs and have definitely enjoyed good results from them as have many others, however ironically in the last few years I've found myself back to running good old cheap as chips NGK BPR6ES, and here's why.
The LPG plugs I was using were painfully expensive at £120.00 a set, and while they lasted longer than good old BPR6ES they didn't last 8 times longer. The heavy ends contained within LPG will foul a spark plug much faster than petrol, these oils are suspended in the gas and are burnt within the combustion chamber forming a clay type deposit on the centre electrode and the earth electrode too which is a highly effective electrical insulator and the last thing you want happening at the end of a spark plug!
As the miles increase this build up can reach a point where the plug fails to fire thus casing misfires, and when a cylinder misfires the engine oil mist naturally present to lubricate the bores will oil up the plug making the situation even worse. If you have a spark plug that's occasionally failing to fire due to plug fouling the other thing that happens is you end up putting a massive strain on the HT lead serving that cylinder, with coil packs you're left with 40,000 volts trying to find the easiest path to earth, this of course should always be the earth electrode of the plug but if that's fouled and insulated with the clay deposits believe me all those volts will find a new way to earth!
Typically the weak point the ignition system finds is the HT lead, or more specifically in my experience the spark plug boot as it's both the end of the line and positioned very close to the cylinder head which is very well earthed. So the result of me not changing my spark plugs regularly enough is a succession of destroyed HT leads which again starts to get expensive, to solve the problem I've found its far better to change the plugs every 6,000 miles than use the expensive special LPG plugs that while lasting twice as long still suffer the fouling issue around 12,000 miles.
Now if you consider I pay £15 for 8 genuine NGK BPR6ES plugs and £120 for 8 fancy NGK LPG plugs the good old BPR6ES plugs changed every 6,000 miles quickly becomes the no brainer option. A set of NGK BPR6EIX are cheaper than the special LPG plugs at around £70 a set but still need swapping out around the 8,000 mile point so again they really don't make any financial sense in my case. So I've come full circle and much like oil changes the way to keep my LPG TVR running sweet is to use quality but cost effective service parts and just change them on a regular basis with new.
So every 6,000 miles my LPG TVR gets a fresh 5l serving of Penrite HPR15 topped off with the even higher zinc content Classic Oils own brand 20w/50, at the same time she gets a brand new set of genuine NGK BPR6ES plugs to keep her running sweet for the next 6,000 miles. In summary its been my experience frequency of servicing and regular replacement of consumables such as spark plugs and engine oil is a way better approach than buying expensive fancy pants parts.
The LPG plugs I was using were painfully expensive at £120.00 a set, and while they lasted longer than good old BPR6ES they didn't last 8 times longer. The heavy ends contained within LPG will foul a spark plug much faster than petrol, these oils are suspended in the gas and are burnt within the combustion chamber forming a clay type deposit on the centre electrode and the earth electrode too which is a highly effective electrical insulator and the last thing you want happening at the end of a spark plug!
As the miles increase this build up can reach a point where the plug fails to fire thus casing misfires, and when a cylinder misfires the engine oil mist naturally present to lubricate the bores will oil up the plug making the situation even worse. If you have a spark plug that's occasionally failing to fire due to plug fouling the other thing that happens is you end up putting a massive strain on the HT lead serving that cylinder, with coil packs you're left with 40,000 volts trying to find the easiest path to earth, this of course should always be the earth electrode of the plug but if that's fouled and insulated with the clay deposits believe me all those volts will find a new way to earth!
Typically the weak point the ignition system finds is the HT lead, or more specifically in my experience the spark plug boot as it's both the end of the line and positioned very close to the cylinder head which is very well earthed. So the result of me not changing my spark plugs regularly enough is a succession of destroyed HT leads which again starts to get expensive, to solve the problem I've found its far better to change the plugs every 6,000 miles than use the expensive special LPG plugs that while lasting twice as long still suffer the fouling issue around 12,000 miles.
Now if you consider I pay £15 for 8 genuine NGK BPR6ES plugs and £120 for 8 fancy NGK LPG plugs the good old BPR6ES plugs changed every 6,000 miles quickly becomes the no brainer option. A set of NGK BPR6EIX are cheaper than the special LPG plugs at around £70 a set but still need swapping out around the 8,000 mile point so again they really don't make any financial sense in my case. So I've come full circle and much like oil changes the way to keep my LPG TVR running sweet is to use quality but cost effective service parts and just change them on a regular basis with new.
So every 6,000 miles my LPG TVR gets a fresh 5l serving of Penrite HPR15 topped off with the even higher zinc content Classic Oils own brand 20w/50, at the same time she gets a brand new set of genuine NGK BPR6ES plugs to keep her running sweet for the next 6,000 miles. In summary its been my experience frequency of servicing and regular replacement of consumables such as spark plugs and engine oil is a way better approach than buying expensive fancy pants parts.
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