colder plug

[kywes@bellsouth.net (Wes Brockway)]

I'm remembering that the part number of the plug is related to the
hotness or coldness of the plug. So going from an R45 to an R46 for
example means it's essentially the same plug but has a different
temperature rating. A good FLAPS should be able to tell you based upon
what is recommended for your car and then which plug to get to get a
colder plug.

To this end I had also read that the sparkplug crossreference books are
updated each year and for the same car the plug is changed I think to a
hotter plug to assist burning oil that is probably getting past the
rings. At least that's the theory, I don't think manufacturers actually
update the books. Perhaps plugs have a wider operating range then in
past years.

-----Original Message-----
From: scirocco-l-admin@scirocco.org
[mailto:scirocco-l-admin@scirocco.org] On Behalf Of T Berk
Sent: Wednesday, April 10, 2002 8:49 PM
To: Sebastian Liberona
Cc: Scirocco List
Subject: Re: colder plug


Sebastian Liberona wrote:
> 
> I have a 88 16v, and i need a spark plug that is one range colder for 
> when i turbo it.. i cant seem to find any. anyone out there have a 
> plug number? either ngk or bosch. thanks!
> 

If I remember (from my air cooled days) cooler involves a longer center
tower on the plug, moving it away from the threads and heat of the
block. 

You may not find it in  the VW lists but might in Audi or other Euro
motor that has the same thread and bore size.

gl,
TBerk

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