[DeTomaso] Engine stall under hard braking

[eb0711 at kolumbus.fi]

Came to think about the fact that many factory equipped holleys had 
dashpots that delay the throttle closing. Maybe keeping the butterflys 
open for little longer would help to keep mixture leaner, not by 
preventing the accidental fuel entering, but letting more air in when 
you step off throttle and on the brake. Then found this from Jegs site. 
Seems there might be something to it...

Holley 11-4 - Holley Throttle Solenoid, Dashpot & Brackets Details

*Dashpot*

Designed to be used on manual transmission equipped vehicles, dashpots 
are used to prevent engine stalling on sudden deceleration. This dashpot 
can be used with Holley brackets 510-20-72 
<javascript:linkOpener('510-20-72')>, 510-20-58 
<javascript:linkOpener('510-20-58')>, 510-20-17 
<javascript:linkOpener('510-20-17')>.

Cheers,
Janne

5/22/2013 4:00 PM, eb0711 at kolumbus.fi kirjoitti:
> Just got a strip dominator from US with help from Mike Drew.  I'm
> beginning to think I'll shave that straight, put it in,  adjust the
> floats and give it a go. I planned to do this anyway at some point, but
> now I have the reason to do it soon. :)
>
> Will be interesting to see if this solves it by itself.
>
> Thanks,
> -Janne
>
>
> 5/22/2013 3:08 PM, Will Kooiman kirjoitti:
>> I had the same thing years ago.
>>
>> I tested on an empty road.  I removed the air filter and hit the brakes.
>> Fuel comes out of the REAR BOOSTERS.  NOT the vents.  Vent whistles won't
>> fix that, nor will a tube connecting the vent pipes.
>>
>> I tried everything on your list, but it did nothing.
>>
>> I finally leveled the carburetor, and then reset the float levels.  After
>> that, I could stand on the brakes without killing the engine.
>>
>> The intake is made for a front engine car, which tilts the engine down in
>> the back to make it easier for the transmission to fit under the car.  The
>> carburetor is tilted in the front to level the carburetor.
>>
>> The Pantera mounts the engine level, but the carburetor is still tilted
>> down in the front.
>>
>> I leveled my carburetor by modifying a plastic carburetor spacer.  You can
>> probably buy a tilted carburetor spacer, so you don't have to modify your
>> own.
>>
>> You do not need to bend the carburetor studs.  The studs are smaller than
>> the holes in the carburetor.
>>
>> My advice is to first level the carburetor, and then set the float levels.
>>    And then, you need to readjust the idle screws, the timing and the jets.
>>
>> And just to keep me honest, try hitting the brakes with the air filter
>> removed.  Just make sure you are safe - empty road, no traffic, etc.
>>
>> --
>> Will
>>
>>
>>
>>
>>
>> On 5/22/13 1:14 AM, "eb0711 at kolumbus.fi" <eb0711 at kolumbus.fi> wrote:
>>
>>> Thanks to all for inputs. Sounds like the plan goes like this:
>>>
>>> Check float levels
>>> test
>>> Add whistle to the rear bowl, if there's not one there
>>> test
>>> Connect the vent pipes
>>> test
>>>
>>> -Janne
>>>
>>> 5/22/2013 6:37 AM, Don Thomas kirjoitti:
>>>> If you are braking hard you should have a fuel baffle / whistle.
>>>> See: http://holley.com/26-89.aspv
>>>>
>>>>
>>>> On Tue, May 21, 2013 at 11:46 AM, eb0711 at kolumbus.fi
>>>> <mailto:eb0711 at kolumbus.fi> <eb0711 at kolumbus.fi
>>>> <mailto:eb0711 at kolumbus.fi>> wrote:
>>>>
>>>>
>>>>       I have a practically stock engine, but with holley vacuum secondary
>>>>       carb. I've been doing couple of hard brakings now that I have
>>>> rebuilt
>>>>       the brakes, and love the brake performance. However I've succeeded
>>>> to
>>>>       stall the engine a few times under braking.
>>>>
>>>>       Thinking it could be carb and fuel slosh related, but where to
>>>> begin?
>>>>
>>>>       Cheers,
>>>>       Janne
>>>>       _______________________________________________
>>>>
>>>>       Detomaso Forum Managed by POCA
>>>>
>>>>       DeTomaso mailing list
>>>>       DeTomaso at poca.com <mailto:DeTomaso at poca.com>
>>>>       http://poca.com/mailman/listinfo/detomaso
>>>>
>>>>
>>> _______________________________________________
>>>
>>> Detomaso Forum Managed by POCA
>>>
>>> DeTomaso mailing list
>>> DeTomaso at poca.com
>>> http://poca.com/mailman/listinfo/detomaso
>>
>>
> _______________________________________________
>
> Detomaso Forum Managed by POCA
>
> DeTomaso mailing list
> DeTomaso at poca.com
> http://poca.com/mailman/listinfo/detomaso
>
>