<VV> Spark Plugs Flying

[Frank DuVal]

The AR33 is a taper seat spark plug. To make this plug seal, you need to 
cut a matching taper in the Corvair head. That is a lot of work. Also 
the taper needs to be about .040" deep, to get the .460" reach of the 
AR33 plug to match the plug depth of a 1/2" reach of the AC 44F.

This is why I called Autolite to get part numbers for 18 mm washer 
gasket type plugs. There are two still in production I listed in a 
previous post today. These plugs just require taping the hole to 18mm 
specifications, with no taper on the seat, just flat, like it already is.

Now that AR33 would run real well in my 1984 F-150 with the 300 cu in six.

Frank DuVal


On 6/2/2015 8:19 PM, Brian via VirtualVairs wrote:
> Frank DuVal look at Autolite AR33 at this link to Summit racing
>
> ---------- Original Message ----------
> From: Joel McGregor via VirtualVairs <virtualvairs at corvair.org>
> To: 'corvair' <virtualvairs at corvair.org>
> Subject: Re: <VV> Spark Plugs Flying
> Date: Tue, 2 Jun 2015 18:01:13 +0000
>
> Ford straight 6.  Can't remember the model but it seems like I saw them in the '70s.
> http://www.summitracing.com/search/brand/autolite/part-type/spark-plugs/spark-plug-thread-size/18mm
>
> Joel McGregor
>
>
> ________________________________________
> From: VirtualVairs [virtualvairs-bounces at corvair.org] on behalf of Harry Yarnell (Verizon) via VirtualVairs [virtualvairs at corvair.org]
> Subject: Re: <VV> Spark Plugs Flying
>
> 18mm? Yea, Ford used them, back in the day...
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