[DeTomaso] LEADED RACE FUEL & UNLEADED FUEL MIX???Re: PANTERA RAN GREAT

Tue Sep 23 16:33:42 EDT 2008

Now THAT is a very good reason. Forgot about that....

Thanks, Paul.

On Tue, Sep 23, 2008 at 3:01 PM, Paul - Home <thedrol at pobox.com> wrote:
> If you are running an O2 sensor with your EFI, you may experience a
> shortened life span of the O2 sensor due to running leaded gas.
>
> Paul
> #9270
>
> Mad Dog Antenucci wrote:
>> PS the race fuel was leaded 110
>>
>> Mad Dog Antenucci <teampantera at yahoo.com> wrote:  Kirby, MikeT, All
>>
>> I'm sure what fuel I had in the Pantera had no impact on 'cold' run condition because the engine ran beautifully from start to finish sunday.
>>
>> One of the racers in Ely asked me if I was running 'leaded race' car with the EFI system. I told him yea that I was running a mix of 92 unleaded with leaded race fuel and he suggested it wasn't advisable.
>>
>> True not true?
>>
>> Comments?
>>
>> Dawg
>>
>> Kirby Schrader wrote:
>> Well, uhhhhh.... OK.....
>>
>> First, I'm pleased 'cold in Texas' was so funny! My tongue in cheek
>> comments don't usually merit such a response! And, by the way, even in
>> Houston it gets below freezing.
>>
>> In any case....
>>
>> 'Cold' to an EFI system means almost anything below about 50F. A
>> temperature at which the combustion process needs more fuel instead of
>> air. (Everyone with a carb uses a choke to compensate.... duh.)
>>
>> I doubt MD's car has experienced this since the initial EFI
>> installation in sunny CA. Being 'not so warm' in Nevada was the first
>> time he's experienced the running rich phenomenon (assumption!)
>>
>> In any case, I stand by my recommendation to MD.
>>
>> In fact, an even easier solution would be just set the parameters at
>> half the values they currently are set and and then see if the car
>> still starts and runs OK the next time it's 'cold' outside. I'll bet
>> it will work fine. In fact, it may still even be too rich. If so, half
>> them again.
>>
>> Secondly, Mike.... Ice may fake out the air temp sensor (which is easy
>> enough to get to), but the actual air temp going into the combustion
>> chamber wouldn't change. And don't forget the coolant/engine
>> temperature. That is part of the cold start setup as well.
>>
>> You really do need 'cold' air and 'cold' engine and coolant to adjust
>> the cold start parameters correctly. Which means a trial and error
>> approach each 'cold' morning.
>>
>> Kirby (worked in Sweden at 40 below which is _cold_) Schrader
>>
>> PS: 40 below is 40 below. Durango or Sweden.
>> ;-)
>>
>>
>>
>>
>> On Tue, Sep 23, 2008 at 12:40 PM, wrote:
>>> Cold in Texas? PuuulllllllleeeeeeeeeeeeezzzzzzzzzzzzzzzzzzzZ.
>>>
>>> We have already had morning in the 30s - drop it off for a few days
>>> and I'll wring it out for you!
>>>
>>> cold in texas BWAHAHAHAHAHAHAHAHA - I don't care who you are, that's funny.
>>>
>>>
>>> Quoting Kirby Schrader :
>>>
>>>> Asa,
>>>>
>>>> The Electromotive default parameters for the cold start are very rich.
>>>> I am assuming that they haven't been touched...
>>>>
>>>> In fact, I have turned mine off completely on the GT40 and haven't had
>>>> a problem, so far.
>>>> Admittedly, it isn't too cold in Texas yet.... and I might have to add
>>>> some in later...
>>>> :-)
>>>>
>>>> I had the same problem 8 years ago after I installed the Haltech EFI
>>>> on my Pantera.
>>>> First cold morning starting up to go to work was an eye watering
>>>> experience...
>>>> The amount of black smoke was amazing until it warmed up.
>>>>
>>>> The difficult part with that tuning is you need a cold morning every
>>>> day for a week or so to get it right.
>>>>
>>>> Kirby
>>>>
>>>> On Tue, Sep 23, 2008 at 10:18 AM, wrote:
>>>>> Kirby,
>>>>>
>>>>> You know the Dog can't turn a wrench. Why do you think he needs peons
>>>>> like me to come along?
>>>>>
>>>>> Trouble is, we didn't do any testing at all once in Ely. Even had we,
>>>>> I didn't have the software loaded on my notebook (gee that would have
>>>>> been a good idea), but we -did- take the Electromotive book with us in
>>>>> case of real difficulty. Though again, the morning of the race, he
>>>>> went to the start line and I went to the finish, so we wouldn't have
>>>>> tuned it anyway.
>>>>>
>>>>> I'm sure he'll have Dick Drenske over soon to give it a whirl and
>>>>> tweak it a bit.
>>>>>
>>>>> I will say though, once warmed up and having run 150 for a bit over
>>>>> half an hour, it was really purring and running very nice.
>>>>>
>>>>> Asa Jay
>>>>>
>>>>>
>>>>> Quoting Kirby Schrader :
>>>>>
>>>>>> Dear Dawg,
>>>>>>
>>>>>> You _know_ you can adjust that warm up sequence to make it right,
>>>>>> don't you?
>>>>>>
>>>>>> Just get off the Crackberry and get on the laptop hooked to the ECU!
>>>>>>
>>>>>> :-)
>>>>>>
>>>>>> Kirby
>>>>>>
>>>>>>
>>>>>> On 22 Sep 2008, at 9:09 PM, Mad Dog Antenucci wrote:
>>>>>>
>>>>>>> Morning,
>>>>>>> AJ and I made it back okay.....we ran an easy 150.38 mph which WOULD
>>>>>>> have been good for a trophy 12 years ago but not on Sunday....2008
>>>>>>> viper ran a near perfect 149.995 mph average....still he was a candy
>>>>>>> ass driving a new machine.
>>>>>>>
>>>>>>> Dan Courtney came up with new Cobra Bullet wheels and Z rated rubber
>>>>>>> but his bow tie engine started losing oil pressure and he dropped
>>>>>>> out right after narrows....racers were SHOCKED to see his Pantera
>>>>>>> becaus it was so rough but I have to give him credit for trying to
>>>>>>> win the $5 million challenge.....AJ printed out fake bills hehe
>>>>>>>
>>>>>>> The EFI changes were impressive....tell the efi guy that he needs to
>>>>>>> lean out cold operating whatever on ECU.....one of the reasons it
>>>>>>> ran so rough UNTIL it was cold according to a couple EFI people is
>>>>>>> the computer thinking something is wrong because it takes so long to
>>>>>>> warm up....what scared me was I used all most a quarter tank of fuel
>>>>>>> (half of it race gas) to go from Ely 20 or so miles to pre grid....I
>>>>>>> gased up at lund truck stop but was really worried that I would come
>>>>>>> up short on run.....but soon as engine was WARM after leaving
>>>>>>> starting line the fuel economy was BETTER then the old Holly double
>>>>>>> pumper.........the oil temp was like 200-210 but water assuming
>>>>>>> temps were correct never got to 180 UNLESS we got a bad reading....
>>>>>>>
>>>>>>> Side skirt on drivers side on FRONT pulled loose but stayed on
>>>>>>> car....so no worried there....talk to you soon.
>>>>>>>
>>>>>>> Daw
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> Mad Dawg Antenucci
>>>>>>> Team Pantera Racing
>>>>>>> The 1st & still the only vintage race team in open road racing
>>>>>>> www.teampanteraracing.com
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>> Mad Dawg Antenucci
>> Team Pantera Racing
>> The 1st & still the only vintage race team in open road racing
>> www.teampanteraracing.com
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>> Mad Dawg Antenucci
>> Team Pantera Racing
>>   The 1st & still the only vintage race team in open road racing
>> www.teampanteraracing.com
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