Iridium sparkies on Ebay, advice needed

[bidtowin]

http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... 78437&rd=1

STANDARD GRADE PLUGS ARE RATED AT 6 THESE PLUGS ARE
ONE GRADE COOLER AT GRADE 7 WHICH WILL BE ENOUGH FOR MODS SUPPORTING UP TO 355 BHP

I thought it was the other way round?

Im running 16PSI, would these be fine for my MR2 rev1?

I understand that i can get BKR6e's for cheaper but these last a lot longer

Thanks

Ross

[coolhands]

I think the info re: heat rating is correct, in that the higher the number (ie 7), the cooler they run. Therefore they are more suited to higher modded engines that tend to run hot.

[bidtowin]

Ok so worth a buy then?

[^Trickster^]

Dont buy iridium tipped, buy stock platnums, which i find last longer than any and ive tried loads, or fit copper grade ones.

Iridium tipped plugs have a tendancy to crack/smash and the tips and ceramic or whatever its made from, drop into the bores.

Im making around 350hp and i use stock platinums from toyota.

Graeme

[bidtowin]

Ok thanks

Could i have the part number and i will get some, im running around 250BHP

Are they the bkr6es?

Thanks

Ross

[MegatronUK]

You want the BKR7ES or the BCPR7ES.. depending on which you go for, copper or platinum (never remember which is which!). '6ES are standard grade.. the 7 runs cooler at higher temps.. so better for tuned engines.