[VintageLambo] Re: spark plugs

Hi Alex, In my 400GT 2+2 I run Bosch Super Cu-Electrode Thermo-elastic, 7500, W-7-DC, Part Number 0-241-235-602-80U gapped to ~.030"(Whew...) I"m quite happy with them, but obviously there are a lot of other choices.I"ve heard NGK are the best, but I don"t really know. Here are a few little bits and pieces of info for your holiday reading.And I"d love to get a thread going on this subject.Who is using what plug, and how do they like them? Best, Fred ----------------------- Spark Plugs: NGK BP6EV plugs, gapped to @ .030" -- @ $3.99 ea Bakelite plug caps: Bosch cap 0356100014 -- @ $2.78 ea www.Pelhamauto.com ------------------ http://www.diy-efi.org/gmecm/papers/plug_cuts.html Links: http://www.piercemanifolds.com - weber parts http://www.gunson.co.uk - Colortune Europe http://www.aep.bigstep.com - Colortune US http://groups.yahoo.com/group/lamborghini_info/message/5935 For the Countach If you have a 2 valve car and like Champion plugs you have these to choose from starting with RN6YC, You can go hotter with an RN7YC or hotter still RN9YC. You can go one step colder with a RN4YC. Me I like Autolite plugs cause I have had less problems with them over the years. In an Autolite you will start with a number 51, hotter will be a 62 or hotter still with a 64. Colder would be a 404 or an AP404(Platinum) or a 4251. --Chad -------------------------------- Here are the 400GT plugs from the owner"s manual, FWIW... --For running under heavy load or in hot climate: BOSCH W250 P 21 (gap: 0.35mm) --For running under normal conditions: BOSCH W235 P 21 (gap: 0.35mm) --For running under light load or in cold climate: BOSCH WG 215 T 28 (gap: 0.45mm) Obviously, they ran a very small gap back then.I"ve never heard the factory explanation for that.