Spark Plugs

mantianak · 13th March 2007, 17:45

Evening all,

I'm looking for some new spark plugs. On Rimmer bros (same with the oil filter) there are 2 sets. Spark plugs, NLP100290 and NLP100290P.

As discussed on the oil filter thread the P more than likely means non-OEM.

Can anybody say if the NLP100290P is any good? They're a lot cheaper.

Or are there such things as performance spark plugs? If so, how much and where?

FATurbo - EXPRESS · 13th March 2007, 18:16

Mantianak,

Sorry I can't help you out. However, might I suggest you call Rimmer Bros and ask to speak to Mark in Parts. Most helpful.

Kandyman · 13th March 2007, 18:59

Give SMC a try on here/Ebay

http://cgi.ebay.co.uk/Rover-75-MG-ZT...QQcmdZViewItem
Service Kit 7

PHE100460 Air Fitler

LPW100160 Oil Filter

NLP100290 x 6 Spark Plugs

ALU1403 Sump Washer

mantianak · 13th March 2007, 20:00

That seems to be a saving of about £10 before P&P compaired with xpart.

I would buy it if I still had the standard filter fitted.

SMC is selling induvidual spark plugs
http://cgi.ebay.co.uk/Rover-25-45-75...QQcmdZViewItem

It says it for the 1.8 models. Isn't it the same part but more for the KV6 engines?

£2.24 Cheaper per plug! Bargain.

callyuk · 14th March 2007, 08:45

manti you can get performance spark plugs i used to have bosch super 4s in my calibra butthey burnt out in 6 months plus without upgraded leads you wont feel much of a difference have a look on some of the performance sites like deamon tweeks and im sure you will find some

Simon W · 15th March 2007, 09:32

My brother-in-law (who works at Gaydon and was on KV6 engine-testing for 4 years or so) tells me that they started using plugs with multiple electrodes for better reliability (e.g. three electrodes per plug instead of one). Like an idiot I didn't ask him what they were called though.

Kandyman · 15th March 2007, 14:43

I think most of the bigger spark plug company's NGK and the like are doing Multi Ground Electrode Spark Plugs. There are meant to be alot better.

callyuk · 15th March 2007, 15:34

i cant remember the last time i saw a spark plug with only one electrode most are muilti point these days but the bosh one i had, had 4 electrodes on each plug

mantianak · 15th March 2007, 18:16

Why does having more points make it better? Less resistance or more chance of working?

Kandyman · 15th March 2007, 19:54

Why have spark plugs with multiple ground electrodes?

Every time the plug sparks, minute particles of material are worn away from the electrodes. This phenomenon is called spark erosion. This continuous process over time increases the spark plug gap between the centre and the ground electrode. This increase is permissible only within certain limits because as the gap increases, the required voltage in order to produce a spark also increases. If the gap becomes too large, misfiring will occur. This will result in reduced engine performance, increased emissions, higher fuel consumption and damage to the catalytic converter.

read more here
http://www.ngkntk.co.uk/technicaltip...delectrode.asp

13th March 2007, 17:45	#1
mantianak I really should get out more....... ZT 190+ Saloon Join Date: Nov 2006 Location: Poole Posts: 2,413 Thanks: 6 Thanked 22 Times in 21 Posts	Spark Plugs Evening all, I'm looking for some new spark plugs. On Rimmer bros (same with the oil filter) there are 2 sets. Spark plugs, NLP100290 and NLP100290P. As discussed on the oil filter thread the P more than likely means non-OEM. Can anybody say if the NLP100290P is any good? They're a lot cheaper. Or are there such things as performance spark plugs? If so, how much and where? __________________ http://i35.photobucket.com/albums/d1..._signature.png

13th March 2007, 20:00	#4
mantianak I really should get out more....... ZT 190+ Saloon Join Date: Nov 2006 Location: Poole Posts: 2,413 Thanks: 6 Thanked 22 Times in 21 Posts	That seems to be a saving of about £10 before P&P compaired with xpart. I would buy it if I still had the standard filter fitted. SMC is selling induvidual spark plugs http://cgi.ebay.co.uk/Rover-25-45-75...QQcmdZViewItem It says it for the 1.8 models. Isn't it the same part but more for the KV6 engines? £2.24 Cheaper per plug! Bargain. __________________ http://i35.photobucket.com/albums/d1..._signature.png

14th March 2007, 08:45	#5
callyuk Regular poster Volvo 850 t5 Join Date: Mar 2007 Location: s.wales Posts: 51 Thanks: 0 Thanked 0 Times in 0 Posts	manti you can get performance spark plugs i used to have bosch super 4s in my calibra butthey burnt out in 6 months plus without upgraded leads you wont feel much of a difference have a look on some of the performance sites like deamon tweeks and im sure you will find some __________________ LIVE FAST DIE YOUNG

15th March 2007, 15:34	#8
callyuk Regular poster Volvo 850 t5 Join Date: Mar 2007 Location: s.wales Posts: 51 Thanks: 0 Thanked 0 Times in 0 Posts	i cant remember the last time i saw a spark plug with only one electrode most are muilti point these days but the bosh one i had, had 4 electrodes on each plug __________________ LIVE FAST DIE YOUNG

15th March 2007, 18:16	#9
mantianak I really should get out more....... ZT 190+ Saloon Join Date: Nov 2006 Location: Poole Posts: 2,413 Thanks: 6 Thanked 22 Times in 21 Posts	Why does having more points make it better? Less resistance or more chance of working? __________________ http://i35.photobucket.com/albums/d1..._signature.png

13th March 2007, 18:16	#2
FATurbo - EXPRESS Regular poster Rover 75 Contempory SE 2.5 V6 Join Date: Mar 2007 Location: Lincoln Posts: 65 Thanks: 0 Thanked 0 Times in 0 Posts	Mantianak, Sorry I can't help you out. However, might I suggest you call Rimmer Bros and ask to speak to Mark in Parts. Most helpful.

13th March 2007, 18:59	#3
Kandyman Banned ROVER 75 2.5 V6 Connoisseur SE Limousine 2004 Join Date: Oct 2006 Location: Welling Posts: 10,995 Thanks: 0 Thanked 2 Times in 2 Posts	Give SMC a try on here/Ebay http://cgi.ebay.co.uk/Rover-75-MG-ZT...QQcmdZViewItem Service Kit 7 PHE100460 Air Fitler LPW100160 Oil Filter NLP100290 x 6 Spark Plugs ALU1403 Sump Washer

15th March 2007, 09:32	#6
Simon W This is my second home Rover 75 2.0 Litre Club Saloon Join Date: Nov 2006 Location: S Posts: 3,280 Thanks: 38 Thanked 50 Times in 47 Posts	My brother-in-law (who works at Gaydon and was on KV6 engine-testing for 4 years or so) tells me that they started using plugs with multiple electrodes for better reliability (e.g. three electrodes per plug instead of one). Like an idiot I didn't ask him what they were called though.

15th March 2007, 14:43	#7
Kandyman Banned ROVER 75 2.5 V6 Connoisseur SE Limousine 2004 Join Date: Oct 2006 Location: Welling Posts: 10,995 Thanks: 0 Thanked 2 Times in 2 Posts	I think most of the bigger spark plug company's NGK and the like are doing Multi Ground Electrode Spark Plugs. There are meant to be alot better.

15th March 2007, 19:54	#10
Kandyman Banned ROVER 75 2.5 V6 Connoisseur SE Limousine 2004 Join Date: Oct 2006 Location: Welling Posts: 10,995 Thanks: 0 Thanked 2 Times in 2 Posts	Why have spark plugs with multiple ground electrodes? Every time the plug sparks, minute particles of material are worn away from the electrodes. This phenomenon is called spark erosion. This continuous process over time increases the spark plug gap between the centre and the ground electrode. This increase is permissible only within certain limits because as the gap increases, the required voltage in order to produce a spark also increases. If the gap becomes too large, misfiring will occur. This will result in reduced engine performance, increased emissions, higher fuel consumption and damage to the catalytic converter. read more here http://www.ngkntk.co.uk/technicaltip...delectrode.asp