[DeTomaso] Ping Ping

LS lashdeep at yahoo.com
Thu Jan 9 20:33:50 EST 2014


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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