Re: New spark plugs

[John_Calabrese@ENGELHARD.COM]

I recived a set as well, there are three spark "gaps" - center electrode to
ceramic metal ring, metal ring to metal ring, and metal ring to ground
(threads).  I haven't put them in yet, mainly because I need a set of
spacers (coming) to fit them.  Glad to hear, though, that they do the
things you say, as that is all they should do.  I remember a thread a while
ago about plugs and it turned into a "technical" war, lasting  days on who
could phrase there sentences right, let's not do that again.  Has anyone
else tried these plugs?  I can't wait to.  BTW  how was your off-idle
response?  could you tell a difference?




David Cooley <n5xmt@triad.rr.com>@diy-efi.org on 08/28/2000 03:57:24 PM

Please respond to gmecm@diy-efi.org

Sent by:  owner-gmecm@diy-efi.org


To:   gmecm@diy-efi.org
cc:   eec@eelink.net
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@triad.rr.com
Packet: N5XMT@KQ4LO.#INT.NC.USA.NA T.A.P.R. Member #7068
I am Pentium of Borg... Division is Futile!
===========================================================

----------------------------------------------------------------------------

To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo@lists.diy-efi.org



----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo@lists.diy-efi.org