[TPR] Carb and fuel pump
John Bentley
gndplne at yahoo.com
Sun Dec 8 14:23:08 PST 2013
Asa, remove your msd rev limiter. :) seriously, 600 cfm is plenty. Mph is not very helpful when contemplating carb size. What was the max rpm you could do? JB
Sent from my iPhone
> On Dec 8, 2013, at 12:50 PM, Asa Jay Laughton <asajay at asajay.com> wrote:
>
> I have stock size fuel lines (recently replaced rubber though), and what is probably a stock mechanical fuel pump.
>
> I ran the K&N Triangular Air filter shown here:
> http://www.knfilters.com/search/product.aspx?prod=60-1470
>
> Plugs appear pretty clean.
> Asa Jay
>
>
> Asa Jay Laughton, MSgt, USAFR, Retired
> & Shelley Marie
> Spokane, WA
> ******************************
> http://www.racingagainstautism.com
> http://www.teampanteraracing.com
> http://facebook.com/racingagainstautism
>
>> On 12/8/2013 11:49 AM, David in Durango wrote:
>> Hi all,
>> I already sent Asa some info . . .
>>
>> It would seem, for whatever reason, he is not getting enough air and/ or fuel. ???? I run HUGE fuel lines (compared to recommendations) on most everything. Still believe the 460 goes lean - time for a Robb super pump?
>>
>> So, Asa, bigger air filter? bigger fuel lines? Fuel pump running to spec?
>>
>> have fun.
>>
>> shoveling snow . . .
>> ----- Original Message -----
>> From: Charles Engles
>> To: 'B Hower' ; michael at michaelshortt.com ; 'Asa Jay Laughton'
>> Cc: 'TPR List'
>> Sent: Sunday, December 08, 2013 12:43 PM
>> Subject: Re: [TPR] Carb and fuel pump
>>
>> Dear Bud,
>>
>>
>> Boy, I hate it when someone throw real world experience and evidence in the middle of a theoretical discussion! Nicely done.
>>
>> From your experience, I think we can eliminate the 600 cfm Holley as the culprit and consider the other potential causes.
>>
>>
>> Warmest regards, Chuck Engles
>>
>>
>>
>> From: TPR [mailto:tpr-bounces at teampanteraracing.com] On Behalf Of B Hower
>> Sent: Sunday, December 08, 2013 1:40 PM
>> To: michael at michaelshortt.com; Asa Jay Laughton
>> Cc: TPR List
>> Subject: Re: [TPR] Carb and fuel pump
>>
>> FWIW -- I have had a gps reading of 147 mph with a 600 cmf Holley and stock style aftermarket fuel pump. Engine was running iron 4V heads, .030 over bore. Isky hyd cam.
>>
>>
>> Bud #3400 ( Drive it like there is no tomorrow -- for there may not be ! )
>>
>>
>> On Sunday, December 8, 2013 1:27 PM, "michael at michaelshortt.com" <michael at michaelshortt.com> wrote:
>> Asa,
>> How restrictive is your air intake apparatus? If too restrictive, that can have dramatic effect, imagine an asthmatic running a marathon.
>> Michael
>> On Dec 8, 2013 2:17 PM, "Asa Jay Laughton" <asajay at asajay.com> wrote:
>> Hi all,
>>
>> This year (2013) at the Silver State Classic Challenge, I recorded a top speed in the trap of 130.7 MPH. When I reached the countdown to the trap I was already doing just shy of that to bank time before the Narrows. I consciously pressed the accelerator a bit more to push her up to a goal 135 MPH, but nothing happened.
>>
>> I speculate at 130 MPH, I'm using up all the carb, or all the fuel pump. One, the other, or both.
>>
>> The Carb is a Ford stamped Holley list with these numbers:
>> D8PE-9510-KA
>> LIST 8414
>> 3113
>> This link shows my email back in 1999 with info from Holley that I obtained.
>> http://poca.com/detomaso/1999-09/329.html
>> Apparently it's a 600 cfm. it has vacuum secondaries and three-quarter turn emission lockouts on the mixture screws. I've put a standard rebuilt kit through it once or twice. It's been a really good carb, but I don't know it will pull more than 130 MPH.
>>
>> What to do.
>> As always, money is a bit of an issue. I'd like to install EFI but that's really expensive.
>> I'd like to keep it responsive at low rpm like she is now, but still have the throughput needed at higher rpm at top speeds. I think this leans me toward a vacuum secondary rather than mechanical. I'm sure the cfm needs to be cranked up, but would 650 do it or should I head for 700 or higher?
>>
>> Does anyone have one they'd be willing to part with?
>> Should I send mine into someone like Chuck Nuytten and have them do their magic on it, replacing metering blocks and other mods?
>> Should I just buy a new one?
>>
>> The engine is a 351C bored .030 over, stock stroke.
>> Heads are DOAE, quench chamber.
>> Cam is a Crane hydraulic roller with these specs
>> <mime-attachment.png>
>> Intake is an FPP 4145
>> Stock ZF transmission
>>
>> I've got some time so I'm looking for some informed/experienced opinions on what carb would be best.
>>
>> And since Professor Engles from the Midwest Division of the Pantera Research Institute is engaged with Fuel pump questions, I'll just follow his thread on that part. :)
>>
>> Thanks,
>> Asa Jay
>>
>>
>> --
>> Asa Jay Laughton, MSgt, USAFR, Retired
>> & Shelley Marie
>> Spokane, WA
>> ******************************
>> http://www.racingagainstautism.com
>> http://www.teampanteraracing.com
>> http://facebook.com/racingagainstautism
>> --
>> Asa Jay Laughton, MSgt, USAFR, Retired
>> & Shelley Marie
>> Spokane, WA
>> ******************************
>> http://www.racingagainstautism.com
>> http://www.teampanteraracing.com
>> http://facebook.com/racingagainstautism
>>
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