[DeTomaso] Ping Ping

Thu Jan 9 21:53:28 EST 2014

I really would try water injection first.  Even if it breaks you're
not stuck anywhere.  And it's *very* inexpensive and simple, I think
just putting the injector south of the MAF and mounting the
water/methanol tank/pump on the firewall or fender apron and you're
pretty much done except for the throttle switch and electronics.  Even
if you made your own with a discarded windshield washer bottle and a
relay for your WOT switch would probably show improvement.

sean

On Thu, Jan 9, 2014 at 8:33 PM, LS <lashdeep at yahoo.com> wrote:
> Thanks for all the replies.
>
> 1. No knock sensor on this vehicle.
> 2. This truck is a gas guzzler so race gas wouldn't be convenient since I
> have to fill up quite a bit.
>
> I am going to try a set of Aluminum heads and then have it properly dyno
> tuned to see how well it runs.
>
> I do like the intercooler idea, but I like simplicity even more.
>
>
> Thanks,
> LS
>
>
>
>
>
>
>
> central
> wines-spirits   est 1934
>
> 625 e street nw
> washington, dc 20004
>
> centralwines.com
>
> facebook.com/CentralLiquors
>
> 202-737-2800
>
>
>
> ________________________________
> From: Boyd Casey <boyd411 at gmail.com>
> To: Will Kooiman <will.kooiman at gmail.com>
> Cc: "detomaso at poca.com" <detomaso at poca.com>; Jerry Knotts
> <knottsj at galstar.com>
> Sent: Thursday, January 9, 2014 10:00 AM
>
> Subject: Re: [DeTomaso] Ping Ping
>
> The first thing (and least expensive) I would try would be higher octane
> gas. If you  can't source race gas you can try to buy Av gas at a small
> local airport  (i believe  that av gas is also leaded so that's another plus
> or you can try an octane booster.
> Boyd
>
>
> On Tue, Jan 7, 2014 at 11:32 PM, Will Kooiman <will.kooiman at gmail.com>
> wrote:
>
> I agree with Jerry.  If it was factory equipped with a supercharger, and it
> is pinging, something is wrong.  The knock sensor is the easiest to check.
>
> There are many other possible problems.  Before you redesign the engine,
> look for something that is broken.
>
> On Jan 7, 2014, at 11:20 PM, Jerry Knotts <knottsj at galstar.com> wrote:
>
>
> I guess over the years I have used all of the above except knock sensor
> change.  Never really had the ping but I have used water/methanol, 50 shot
> of Nitrous with a Jacobs unit, also have 3 different pullies for the for the
> snout of the blower.  A 6 lb, 9 lb and an 11 lb pulley.  I run the 11 lb
> usually and the tensioner allows for the difference in diameter without
> changing the belt.  I did run a 18 lb Blowzilla on my '94 Lightning for a
> while and was reminded of the fact that constant boost provides constant
> heat, that is where I used the 50 shot at lower rpm's.
>
> The knock sensor sounds the easiest to check.
>
> Jerry
> On 1/7/2014 8:30 PM, JEFFREY COBB wrote:
>
> Hey LS,
> Sounds like your knock sensors are not doing their job, this Ford system is
> designed not to allow pings. Hook up a scanner and drive and reproduce the
> flaw and note rpm/ignition advance degrees at your flawed load manifold
> pressure. Remap the ecu only after a knock sensor function test is done so
> as to identify what is wrong because something is. Then after knowing and
> fixing the flaw then water/alcohol injection can be used for a smarter power
> increase. Of course an intercooler is the best plan, heck a low amount of
> fogged nitrous will also cool the intake track for a much quicker dynamic
> cool down under light positive load. Use a Jacobs programmer and set your
> nitrous spray curves.
> Get in touch with the Kenny Bell company as this maybe an inherent flaw in
> this Ford application and they know the fix protocol.
> Hope this helps,
>
> Jeff
>
> Jeff Cobb- I pad
> W-225-343-7525
> C-225-907-4514
>
> Jeff Cobb Auto Works
> 1316 S. Acadian Thruway
> Baton Rouge, La.
> 70806
>
> www.LiveOakConcours.org
>
> On Jan 7, 2014, at 4:42 PM, LS <lashdeep at yahoo.com> wrote:
>
>
>
> I don’t even like golf…but need some input.
>
> On long uphill (high load) sections of road, under moderate throttle
> openings and when the supercharger goes into positive boost, the engine
> starts to ping. This will happen only when in overdrive and with revs below
> 2000rpm.
>
> Vehicle : Laforza Magnum GT, 5300 lbs
>
> Engine : 5.0 HO with factory Kenne Bell supercharger, no intercooler and
> cast iron heads.
>
> Trans: AOD 4spd
>
> Fuel : 93 Octane
>
> Elevation : Sea Level up to 1000’
>
> Water Temp : Never exceeds 195F during the “situation”
>
> To remedy the situation, I have adjusted the trans to kickdown sooner and
> have also retarded timing. This has helped but not eliminated the problem.
>
> Any thoughts on permanent solutions?
>
> Aluminum heads? Intercooler?
>
> I’ve heard the full spectrum of ideas so I thought I’d post it here for
> discussion.
>
> I want loads of power (who doesn’t?) but I want to eliminate this problem
> ASAP so I can get many more decades out of this powertrain.
>
> Thanks,
> LS
>
>
>
>
> central
> wines-spirits   est 1934
>
> 625 e street nw
> washington, dc 20004
>
> centralwines.com
>
> facebook.com/CentralLiquors
>
> 202-737-2800
>
>
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-- 
Sean Korb spkorb at spkorb.org http://www.spkorb.org
'65,'68 Mustangs,'68 Cougar,'78 R100/7,'60 Metro,'59 A35,'71 Pantera #1382
"The more you drive, the less intelligent you get" --Miller
"Computers are useless.  They can only give you answers." -P. Picasso