Re: NGK for 75 Turbo

[George Graves <gmgraves@domain.elided>]

I would suspect that it would be a B6ERS. The heat range goes from 4 to 
10 with 4 being the hottest. 6 is middling heat range (you might want 
to go a bit hotter for an older car, but I must admit that I don't know 
what a turbo does for the equation.) the 'B' means 14mm diameter and 
the 'E' means 19mm long. This is the old standard spark plug barrel. If 
your car uses one of the new, smaller plugs (I don't think it does) 
then be advised that the 'B' gets replaced with a 'D' for a 12mm plug 
barrel, and 'C' for 10mm and an 'H' would replace the 'E' for the 
smaller diameter plugs. The 'R' is for resistor and if you don't want 
resistor plugs, leave the 'R' out. 'S' refers to standard tip as 
opposed to 'H' for a wire tip. Alfas want a standard tip.

So, a B6ES or B6ERS would be correct for most '70's -'80's Alfas. A 
higher milage car might go for a B5E/ERS or even a B4E/ERS if the valve 
guides are leaking badly. Fuel injection cars tend to blow black-gray 
smoke under hard acceleration because they invariably use too much gas 
under those conditions especially as the system ages (so I've been 
told). So, again, a bit hotter plug might be in order just to insure 
more complete combustion. But all of this stuff is conditional, and 
even arguable.

If you want the absolute cross to your car and motor. Check with NGK 
Italia's on-line spark-plug reference if they have one. I looked in the 
US guide, but the 75 Turbo wasn't sold here, so its not listed.

George Graves

On Monday, November 4, 2002, at 10:33  AM, alfa-digest wrote:


> Date: Mon, 04 Nov 2002 12:20:30 +0100
> From: Luca <nodoubt@domain.elided>
> Subject: NGK for 75 Turbo
>
> Which NGK spark plug model fits on a 87 Alfa75 Turbo?
> Thanx
> Luca
>
> nodoubt,
> "With dreams to be a king first one should be a man" Joey DeMaio
> 937, 75 Turbo, RM250
>
>
> http://nvr2fst.supereva.it
George Graves
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