New spark plugs

[Bruce Plecan]

Would you report back after 500 miles or so?.
Or have you done that already?.
Had rapide fires 2x that initially felt good and then died quickly
Bruce




----- Original Message -----
From: "David Cooley" <n5xmt at triad.rr.com>
To: <gmecm at diy-efi.org>
Cc: <eec at eelink.net>
Sent: Monday, August 28, 2000 3:57 PM
Subject: New spark plugs


> Hey all,
> I know this has all been hashed out before, and if it's all related to the
> unshrouding of the spark, which indexing would accomplish, then everyone
> needs to index their plugs!.
> I just uploaded 2 images to the incoming ftp site... brisk1.jpg and
brisk2.jpg.
> ftp://ftp.diy-efi.org/incoming
>
> These are 2 views of these Brisk "TSX" premium plugs... a non-visual
> description:
> there is a metal ring bonded into the center electrodes insulater near the
> tip, and 3 ground electrodes that face this "ring".  Spark jumps from the
> center electrode to the ring, and from the ring to one of the 3 ground
> electrodes.  2 sparks in the chamber per ignition event, and they are wide
> open to the surrounding mixture.  Theory is good in that they may be
> igniting the mixture easier.  I received a set for free for testing on my
> 1997 Ford Explorer 5.0L V8.
> The stock plugs, Motorcraft AWSF32EE's only had 5000 miles on them...
> Looked nice and clean... slight off white tint to the center insulator,
and
> a tan-light brown area on one part of the insulator, assumed to be due to
> the direction of swirl/flame travel.  All plugs look pretty much the same.
> Baseline 0-60 on stock plugs (3 seperate gaps... .054 stock, .050 and .060
> with no different results in time).  9.0 seconds as timed on a Vericom.
>
> New Brisk plugs... total of both gaps appears to be around .050" to
> .060"  5 runs back to back under similar weather conditions in the same
> stretch of road as the previous test...  8.3 seconds.  all runs within 0.1
> sec. of each other. (varied from 8.2 to 8.4) on the same Vericom.
>
> Impressions:  Idle is smoother and engine is more responsive... Even new
> stock plugs felt like there was a slight miss at idle...
> no flat spot off idle, and engine doesn't fall on it's face like it's run
> out of air/fuel at 4500 RPM.. stock 1-2 shift point is 5200 RPM.
> Accelerating on dry pavement from a dead stop at WOT and all 4 tires
> squeeled as they crossed the paint lines of the crosswalk...  Stock plugs
> wouldn't do this unless it was damp out...  Engine pulls right past 4500
> with no fall off of power, and the shift is slow enough that I have to be
> careful and watch... holding my foot to the floor and 7 out of 10 times
the
> engine hits the rev limiter at 5500 RPM before it can shift!
> Heavy loads at freeway speed (passing) are no problem either... no
> hesitation etc, just pulls great.
> Took a couple trips this weekend as well... about 500 miles total...
> Mileage is up to 23 on this thing, some traffic, mostly cruising at 75-80
> with the A/C at full boogy.
> Stock plugs, best mileage on these same trips under similar conditions was
> 19.5-20
> Thanks,
> Dave
> ===========================================================
> David Cooley N5XMT Internet: N5XMT at triad.rr.com
> Packet: N5XMT at KQ4LO.#INT.NC.USA.NA T.A.P.R. Member #7068
> I am Pentium of Borg... Division is Futile!
> ===========================================================
>
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