Spark Plugs and caps

[Valentinik]

Following on from my topic on ignition coils, i've been looking at NGK plug caps and spark plugs.

Are these the correct parts i need?

2x http://www.ebay.co.uk/itm/Spark-Plug-Cap-XD05F-NGK-with-Black-Body-Fits-Threaded-Termi-Each-/112138276305?epid=1141977632&hash=item1a1bf64dd1:g:cJIAAOSwol5Y4jhE

2x http://www.ebay.co.uk/itm/NGK-SD05F-Spark-Plug-Cap-Resistor-Cover-Black-8022-/271683682246?epid=1062685938&hash=item3f419bffc6:g:B1cAAOSwKfVXELgL

and 4 x http://www.ebay.co.uk/itm/1x-NGK-SPARK-PLUG-Part-Number-DR7ES-Stock-No-3123-New-Genuine-NGK-SPARKPLUG-/321445360686?epid=1148522573&hash=item4ad7a2f42e:g:Vl0AAOSw-nZTrZ~M

I notice the plug caps have resistors fitted, should i use the plugs with resistors or do i need to use an alternative part that don't have resistors in?

Thanks
Mike

[hairygit]

Use plugs WITHOUT resistors.

[Valentinik]

Use plugs WITHOUT resistors.

Thanks, i thought that may be the case. What model plugs are recommend?

[Nurse Julie]

Plugs without resistors if your caps are resisted.

[Nurse Julie]

I use D8EA's

[hairygit]

Whatever is recommended for a 550, but without the R in it ie book says DR8ES, USE  D8ES

[Valentinik]

Thanks both, from looking at the parts list the D7ES is listed.

I presume the D8 is a cooler running plug? What would the advantage/disadvantage of the cooler plug be?

[Nurse Julie]

Thanks both, from looking at the parts list the D7ES is listed.

I presume the D8 is a cooler running plug? What would the advantage/disadvantage of the cooler plug be?

No idea but it's what we have on the shelf. I now have them fitted to my CB400 and CB550

[hairygit]

I gave D8ES as an example as I didn't have the application list to hand. Cooler running plugs are for sustained high rpm use, higher the number the cooler the plug. If in traffic stop/start most of the time go one grade hotter (lower number), also useful if worn engine fouling plugs.

Sent from my X6pro using Tapatalk

[Green1]

My 550 With electronic ignition had DR7ES fitted but soon failed them.
I replaced them with DR8ES and its been fine since I do very little town use.

[Valentinik]

Thanks everyone for the help. I know what i need to get now 

Mike

[Green1]

meant to say D7ES and D8ES

[deltarider]

Originally in the book it was D7ES which wasn't a particular good plug. Dealers in Holland considered it OK for the break-in period but advised later to use newcomer D8ES-L if you would ride the highways. The D8ES probably would have been to cold. You may say the D8ES-L with its tip that protruded just a tiny bit further, was in between the 7 and 8. Honda France advised them for the CB500/550 and called them auto-nettoyante (selfcleaning). BTW, the D8ES-L was/is used on a wide variety of bikes. I had them in my CB500 on all my travels in Europe often at maintained high speeds. I wouldn't have felt comfortable with the 7, not when you, what happened more than once, were late to switch to reserve... So it depends on your riding, but if the D8EA is the new name for the D8ES-L, it's a good choice. If you don't cruise over 5000 rpm, you may consider the 7EA. 

[Bryanj]

Way back when i switched to D7EV on a 500 and it started noticably better , did more to the gallon and picked up cleaner/quicker. unfortunately NGK have stopped making them now but Denso do an equivalent that i never tried

[deltarider]

unfortunately NGK have stopped making them now but Denso do an equivalent that i never tried

The only Denso that is not really an equivalent is the iridium plug IX22 which is a later development. So far I've read no recommendations for our bikes.