Alternative plug extenders ?

[blaze_away]

Whats your thoughts on these as an alternative to the usual metal extenders that are of dubious quality.
These being genuine NGK should at least be good quality.

https://www.gsparkplug.com/1x-ngk-resistor-spark-p...

[phillpot]

Bought some similar to those, not for a RV8 but another engine, one point to bare in mind is they will only fit spark plugs with a threaded connection like the one on the right........................

[LLantrisant]

looks like this NGK part is supposed to act as a resistance...means this is his main purpose....that it also "extends" is a by-product.

i dont think that the original extenders or their actual replacements are so bad.....the replacememtns are manufactured by Beru, one of the leaders of spark-plug manufacturing.

Edited by LLantrisant on Wednesday 21st November 09:35

[Sardonicus]

Left over from 70/80's air cooled 2/4 stroke motorcycles also to keep the heat away from the HT lead they work well nice to see they still look the same but those motorcycles generally used solid copper cored leads the worry is when you screw that lead into a modern HT lead you will damage the carbon impregnated core may be a "suck it and see" but I have my doubts long term

[phazed]

I have gone back to using the metal extenders for the simple reason that the expensive leads I bought run too close to the manifolds even with socks on.

No problem as yet but it is always in the back of my mind the possibility of them failing so any alternative would be good.

Does what you have put up need to be fitted onto the end of the lead? Most leads come with pre-fitted ends and these would need removing, is that what you plan?

[Sardonicus]

I have been using the alternative for years Accel designed to bend to the angle you want at the spark plug and they stay put , not saying they are the ultimate solution they just work, no problems with them getting stuck on the plug either the terminal or the silicone boot either like others can, I think MSD is another solution but dont know if they have the angle bit am sure Dave/Chimpongas and a few others use em with good results , these ones in pic give me a much bigger spark so an increase in BHP and better MPG too .................................. OK OK that bits bks

Edited by Sardonicus on Wednesday 21st November 10:03

[ianwayne]

LLantrisant said:

looks like this NGK part is supposed to act as a resistance...means this is his main purpose....that it also "extends" is a by-product.

i dont think that the original extenders or their actual replacements are so bad.....the replacememtns are manufactured by Beru, one of the leaders of spark-plug manufacturing.

The problem is the quality of them.

I'm unsure if there are 'copies' out there but I have had 2 break down (go open cct) such that I had a misfire on my Chimaera. Both of them were the shinier, newer variety, marked Beru. The older ones are still fine. Still had a couple left over from buying a complete set of second hand ones fortunately, but as Bannatyne would say, I'm ooot. So I'm considering socks or something similar to that highlighted in this thread.

[TaimarTurbo]

Contrary to the NGK spark plugs, I have't had as good an experience with their plug extenders.
I have had a set on my car, probably 15 years ago and had several of them melt the resistor.
Don't think they were NGK clones, as they were bought locally.

Fred

[Steve_D]

Sardonicus said:

I have been using the alternative for years Accel designed to bend to the angle you want at the spark plug and they stay put , not saying they are the ultimate solution they just work, no problems with them getting stuck on the plug either the terminal or the silicone boot either like others can, I think MSD is another solution but dont know if they have the angle bit am sure ..../.

MSD do an angled version but I suspect they will be too short before the bend as I've just found on another engine. The MSD straight version looks very similar to the Accel and again can be bent to your required angle.

Steve

[lancelin]

I used these on my Griff. I have coil packs but they could be converted to standard dist cap ends. The plug end is angled to clear the manifolds and I also used heat socks. Its been running ok for about a year.

https://www.ebay.co.uk/itm/FORD-FIESTA-1-3i-95-99-...

[ChimpOnGas]

Steve_D said:

Sardonicus said:

I have been using the alternative for years Accel designed to bend to the angle you want at the spark plug and they stay put , not saying they are the ultimate solution they just work, no problems with them getting stuck on the plug either the terminal or the silicone boot either like others can, I think MSD is another solution but dont know if they have the angle bit am sure ..../.

MSD do an angled version but I suspect they will be too short before the bend as I've just found on another engine. The MSD straight version looks very similar to the Accel and again can be bent to your required angle.

Steve

I have these 'MSD Benders'

I've been running them for years on LPG which is notorious for killing HT leads, they have proven themselves to be 100% bullet proof! I run the MSD Superconductors with MSD Pro-Boot Guard over the plug ends then DEI Titanium Protect-A-Boot over that, four and half years and thousands of miles of hard LPG use later and my MSD leads are still performing as good as new.



If that's not enough proof my system is the definitive way to eradicate those dreadful plug extenders I dont know what is, keep in mind I'm punishing my ignition system on LPG so take my 4.5 years and all those miles and double it to give you the likely service life for my double wrapped MSD Superconductor system fitted to a regular petrol powered Chimaera.

Its initially expensive, but if you get nine/ten years out of the setup and suffer no ignition related breakdowns during that period it starts to look like very good value indeed.

https://www.pistonheads.com/gassing/topic.asp?h=0&...

To put all this into perspective I got less than 6 months out of Magnecor KV85 leads on LPG before being left on 7 cylinders in deepest France, as you can see they were used with both extenders and socks so really had no right to fail.

Clearly Magecor or Mangy-Core as I like to call them now are better at marketing than making leads, and they don't honor their guarantee either so its not worth the paper its written on, personally I'll never touch the things again

[lancelin]

I think most leads are ok provided they don't touch the red hot manifold. I'd like to see alternatives to the rubbish Accel ceramic leads! they just pull apart and are not built well.

[Sardonicus]

What many fail to notice is those ceramic leads are designed to be used with slim bodied 16mm plugs rather than fat bodied 18mm plug TVR/LR , yank motors generally use the former style plug also very common in our current motor cars since the 80's , where as the 18mm non existent , probably explaining while some have trouble removing them from the plugs

[LLantrisant]

what i dont get here is:

factorywise there are resistance plugs fitted (those can be changed to non-res ones)
all today´s leads are restiance leads (as long as you dont fabricate your own ones from copper)
and finally you add another restistance in form of those NGK extenders, whereas the original extenders are restistance-free,

a bit too many resistors here, i guess?

[Classic Chim]

LLantrisant said:

what i dont get here is:

factorywise there are resistance plugs fitted (those can be changed to non-res ones)
all today´s leads are restiance leads (as long as you dont fabricate your own ones from copper)
and finally you add another restistance in form of those NGK extenders, whereas the original extenders are restistance-free,

a bit too many resistors here, i guess?

So if I understand your post correct from new and direct from the factory they come with non resistive extenders, but using resistive plugs?
Since then most use non resistive plugs with resistive extenders,,,, or so I thought.

As I have Mbe ignition I no longer have extenders so use resistive plugs. I did have one neighbour mention I knock his satellite dish Out but I think he’s moved on. No other neighbours had a problem.

I’ve read somewhere some resistance is important to not effect cars ECU function, have no idea how accurate that is!

[LLantrisant]

yes.....but the leads are also already restistance....and as i underatand those NGK extenders are not supposed to act as extender...they are designed to add resitance...and as this resitance has to be put "somewhere" those parts looke like extenders.

[Sardonicus]

I think this post maybe going astray the TVR Rover V8 fitted ngk B7 ECS plugs are un-resisted

[N7GTX]

R in the plug code is the clue

[LLantrisant]

yes you are right with the plugs....my mistake........but still does not explain why somebody should fit another resistor in terms of extenders?

[Sardonicus]

N7GTX said:

R in the plug code is the clue

Exactly