LCR Spark Plugs???

[johno1404]

Sorry lads i thought i would pick your brains on this one

I have a 2004 LCR (225). I have only owned it since September last year and recently done a service on it.

The spark plugs i removed were Bosch Super Plus FR7LDC+ (twin prong)

and the ones i recieved from Sam Centre were Bosch Super Plus FR7KPP33+ (single prong)

the reason i am asking if the new ones i was sent are the correct ones for my car as i checked the part number of the set i removed and they match up to a 1.6 Golf or Beetle engine

Just wondered if anyone had a park number or description of the ones they are using???

Thanks

 

[Lodey23]

personally after the experience i just had with bosh plugs, the best place for them is the in, i cant imagine that the ones they have sent you would be correct either. Try and get some NGK plugs instead.

 

[Slimy]

They are likely to be the same ones, if I remember correctly the plugs for my V5 Toledo are the same that are fitted to the 1.2 Polo!

I have to admit I do go for NGK though, I can't really criticise Bosch but I've always managed to get NGK cheaper.

 

[johno1404]

Has anyone got the part number for NGK iridium spark plugs as Sam Centre dont seem to list them???

 

[lloydie]

i have ngk iridium heat 8 as running about 285 bhp, 1 grade cooler spark than standerd =)

 

[johno1404]

You dont have a part number do you? Would they be best for a custom code stage one mapped LCR

 

[lloydie]

im not allowed to post URLs to other sites after i have made 15 posts or more.

but search them on ebay

found these, dont have a part number but are the same, i was advised on average every 50bhp over standerd bhp go a grade cooler in spark. so also might depend on your bhp to what spark plug you need =)

 

[johno1404]

right ok mate thanks all take a look. Mines approx 275bhp so would be best to go for grade 8 then

 

[lloydie]

NGK IRIDIUM IX SPARK PLUGS SEAT LEON CUPRA R (HEAT 8)
search this on ebay

 

[phatchoonz1]

If its remapped and running harder than standard, I'd recommend BKR7EIX (2667) in NGKs - they're the iridium's.
If it's still on a standard ECU map, I'd go for the standard NGK option of PFR6Q (6458) which are platinum plugs.

 

[sambryant]

right ok mate thanks all take a look. Mines approx 275bhp so would be best to go for grade 8 then

heat grade 7

 

[lloydie]

arent they heat grade 7 as standerd? and what bhp would you suggest you would need to be running to go to heat 8? =)

 

[sambryant]

8 is standard. 7 is best for a remapped car

 

[Knight_Rider]

8 is standard. 7 is best for a remapped car

I thought the more power you were running the higher the grade? eg 200bhp can run a 6 and a 260bhp run a 7 etc... a higher number deals with heat better so keeps things cooler.

 

[JamJay]

What are the drawbacks of using a lower grade plug on a higher bhp car? I'm just interested to know.

 

[sambryant]

I thought the more power you were running the higher the grade? eg 200bhp can run a 6 and a 260bhp run a 7 etc... a higher number deals with heat better so keeps things cooler.

wrong, i took my advise from bill at badger 5.

What are the drawbacks of using a lower grade plug on a higher bhp car? I'm just interested to know.

theres no downside m8, car will fire up quicker, plugs will last longer as they run cooler.

 

[JamJay]

Thanks Sam, I stuck the Iridiums in mine but had no idea about why they were recommeneded. I did wonder why this cars turns over less than previous ones

 

[phatchoonz1]

Sorry Sam, Knightrider is correct. The higher the number the cooler the grade of plug.
See here for the NGK tech info on heat ranges:
http://www.ngksparkplugs.com/tech_support/spark_plugs/index.asp?mode=nml

As I said above 6 is standard for the LCR (as in PFR6Q platinums) and 7 is the cooler option for remapped cars running higher boost and increased ignition timing advance and hence higher combustion temperatures (ie. BKR7EIX for the iridium option).

To quote the NGK site
"The heat range must be carefully selected for proper spark plug thermal performance. If the heat range is not optimal, then serious trouble can be the result. The optimal firing end temperature is approximately between 500°C (932°F) and 800°C (1472°F). The two most common causes of spark plug problems are carbon fouling (< 450°C) and overheating (> 800°C). "

 

[sambryant]

Im only going by the advise of one of the greatest vag tuners around. He told me to use 7 as its cooler, im unsure what stock actually is, all i no is 7 is cooler than stock and will run better in my lcr. You can ask badger 5 your self.

 

[sambryant]

I know im not wrong in sayin 7 is the cooler plug, this is the correct plug to run in a mapped lcr.