RE: Surging at 11 psi fixed (UrQ)

["Ned Ritchie" <NED@IntendedAcceleration.com>]

Spark Plug Help. . .

Try W7DTC  Bosch without the R
Or
BP6ET from NGK

The added R gives too much resistance.
Given stock wires you have:

The resistor at the cap end
Solid wires
The resistor at the plug end
And then you ADD a "R" plug???

I think that is over kill.

Ned

-----Original Message-----
From: owner-quattro@coimbra.ans.net [mailto:owner-quattro@coimbra.ans.net]On
Behalf Of William Elliott
Sent: Tuesday, December 15, 1998 2:38 PM
To: IPM Return Requested
Subject: Re: Surging at 11 psi fixed (UrQ)

>
>I'm very surprised that these plugs which are known for lasting MUCH
>longer went bad so quickly... with no physical clues... they look
>great... not worn, cracked, etc. (Recent coil, rotor, cap, and wires)
>
>Any suggestions?  I sucessfully use Bosch (NOT platinums) in
>everything... Corvairs to Trabant to SAAB... should I use NGK here?

<<I've had exceptionally good results with the Bosch tri-electrode plugs
(WR7DTC) in my 1.8 bar engine. Is there any possibility that your
particular plugs were not the proper heat range for your car?>>

My plugs are also WR7DTC.  They look fine (not burnt, etc) with the
exception of the one with a cracked insulator.  (Just as a point of
interest,
when I bought the car it had a set of Bosch Platinums in it... one with a
cracked
insulator... different cylinder (#5 vs #1).

Car is '85 UrQ, K24, IA Stage One, wastegate set at 14psi.

Bill Elliott
Lake Mills, WI