[DeTomaso] Brake vacuum source HELP
Sean Korb
spkorb at gmail.com
Thu Jul 2 15:13:39 EDT 2015
It's possible the stock setup is as efficient as practical. What size
master are you using (Stock 7/8ths or larger 1" or even higher) and do you
have stock brakes? Does it seem like you never have vacuum or does it fade
really fast?
It would be cool if you could get a gauge attached to your booster and rout
it to the cabin but I can't think of an easy way to do that :(
sean
On Thu, Jul 2, 2015 at 3:06 PM, <grayjim at cox.net> wrote:
> Collective advice needed. I installed an electric pump with a reservoir
> can but also left the engine vacuum t'd in for safety. Yes I have 2 check
> valves but I can't get the setup to work any better than my stock
> arrangement. Anyone have a diagram as to how all that should be plumbed for
> efficiency. I feel I've got something wrong.
>
> Thanks in advance
>
> Jim Gray
>
>
> On Thu, Jul 2, 2015 at 1:31 PM, Sean Korb wrote:
>
> The EV crowd has this problem as well. Here is a solution that suggests
>> it
>> is quieter:
>> http://www.evsource.com/tls_braking_system.php
>>
>> Maybe you can pull a pump off a Nissan Leaf, Fiat EV, Chevy Volt or
>> another
>> vehicle of that ilk. They're as libel to show up in junk yards as any
>> limited production vehicle.
>>
>> sean
>>
>> On Thu, Jul 2, 2015 at 12:51 PM, Mike Drew via DeTomaso <
>> detomaso at poca.com>
>> wrote:
>>
>> In a message dated 7/2/15 5 23 23, npdrs at maui.net writes:
>>>
>>> Hello, I am just having new engine installed into my '71 and will no
>>> longer
>>> have a reliable source of vacuum available for the brake booster.
>>> Could someone please recommend a proven electric vacuum pump setup
>>> and where
>>> to buy it?
>>> It would be great if possible to find a source in Germany (or
>>> Europe) as the
>>> car is in Germany.
>>>
>>> Robert--I assume the problem is that your new engine is fitted with
>>>>>>
>>>>> a 'race' intake manifold that has no provisions for vacuum take-off?
>>> That's the problem with such things.
>>> One solution is to have a bung welded to one of the intake runners.
>>> When I faced the same problem with my GT350, I took a different path.
>>> I fitted a Boss 302 carb spacer, which has provisions for brake
>>> vacuum,
>>> yet is very thin to provide hood clearance.
>>> I got mine here:
>>> http://www2.cougarpartscatalog.com/bossspace.html
>>> You could always just get a typical one-inch spacer, but that adds
>>> height that you don't want. This spacer is very, very thin; the round
>>> pipe goes oval as it enters the side of the spacer, reducing height,
>>> yet the total area remains unchanged.
>>> http://image1.cougparts.com/dc/16203/1430333053_l.jpg
>>> http://image1.cougparts.com/dc/16203/1430333006_p.jpg
>>> http://image1.cougparts.com/dc/16203/1430333005_g.jpg
>>> (Those are photos of a used original, not the new repro, which is
>>> built
>>> to the same standard but obviously looks new).
>>> Note that it is somewhat fragile; if you manhandle the hose onto and
>>> off of the pipe, you'll break it. Install the hose onto the pipe
>>> holding the pipe in your hand, then lay the spacer in position, and
>>> manhandle the other end of the hose onto the pipe under the car.
>>> Easy peasy!
>>> In answer to your actual question, I have seen a number of Pantera
>>> owners attempt to incorporate electric vacuum pumps, and every one of
>>> them was just miserable. Those are another 'race only' part, and are
>>> deafeningly loud and create a ton of vibration. I find them
>>> completely
>>> intolorable for a street car, plus they take up a lot of precious
>>> front
>>> trunk space. And they are more expensive than the simple spacer shown
>>> above.
>>> Mike
>>>
>>> _______________________________________________
>>>
>>> Detomaso Forum Managed by POCA
>>> Posted emails must not exceed 1.5 Megabytes
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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
>>
>>
>> ------------------------------
>>
>> _______________________________________________
>>
>> Detomaso Forum Managed by POCA
>> Posted emails must not exceed 1.5 Megabytes
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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
-------------- next part --------------
It's possible the stock setup is as efficient A as practical.A What
size master are you using (Stock 7/8ths or larger 1" or even higher)
and do you have stock brakes?A Does it seem like you never have vacuum
or does it fade really fast?
It would be cool if you could get a gauge attached to your booster and
rout it to the cabin but I can't think of an easy way to do that :(
sean
On Thu, Jul 2, 2015 at 3:06 PM, <[1]grayjim at cox.net> wrote:
Collective advice needed. I installed an electric pump with a
reservoir can but also left the engine vacuum t'd in for safety. Yes
I have 2 check valves but I can't get the setup to work any better
than my stock arrangement. Anyone have a diagram as to how all that
should be plumbed for efficiency. I feel I've got something wrong.
Thanks in advance
Jim Gray
On Thu, Jul 2, 2015 at 1:31 PM, Sean Korb wrote:
The EV crowd has this problem as well.A Here is a solution that
suggests it
is quieter:
[2]http://www.evsource.com/tls_braking_system.php
Maybe you can pull a pump off a Nissan Leaf, Fiat EV, Chevy Volt or
another
vehicle of that ilk.A They're as libel to show up in junk yards as
any
limited production vehicle.
sean
On Thu, Jul 2, 2015 at 12:51 PM, Mike Drew via DeTomaso
<[3]detomaso at poca.com>
wrote:
A A In a message dated 7/2/15 5 23 23, [4]npdrs at maui.net writes:
A A A Hello, I am just having new engine installed into my '71 and
will no
A A A longer
A A A have a reliable source of vacuum available for the brake
booster.
A A A Could someone please recommend a proven electric vacuum pump
setup
A A A and where
A A A to buy it?
A A A It would be great if possible to find a source in Germany
(or
A A A Europe) as the
A A A car is in Germany.
Robert--I assume the problem is that your new engine is fitted with
A A a 'race' intake manifold that has no provisions for vacuum
take-off?
A A That's the problem with such things.
A A One solution is to have a bung welded to one of the intake
runners.
A A When I faced the same problem with my GT350, I took a different
path.
A A I fitted a Boss 302 carb spacer, which has provisions for brake
vacuum,
A A yet is very thin to provide hood clearance.
A A I got mine here:
A A [5]http://www2.cougarpartscatalog.com/bossspace.html
A A You could always just get a typical one-inch spacer, but that
adds
A A height that you don't want.A This spacer is very, very thin;
the round
A A pipe goes oval as it enters the side of the spacer, reducing
height,
A A yet the total area remains unchanged.
A A [6]http://image1.cougparts.com/dc/16203/1430333053_l.jpg
A A [7]http://image1.cougparts.com/dc/16203/1430333006_p.jpg
A A [8]http://image1.cougparts.com/dc/16203/1430333005_g.jpg
A A (Those are photos of a used original, not the new repro, which
is built
A A to the same standard but obviously looks new).
A A Note that it is somewhat fragile; if you manhandle the hose
onto and
A A off of the pipe, you'll break it.A Install the hose onto the
pipe
A A holding the pipe in your hand, then lay the spacer in position,
and
A A manhandle the other end of the hose onto the pipe under the
car.
A A Easy peasy!
A A In answer to your actual question, I have seen a number of
Pantera
A A owners attempt to incorporate electric vacuum pumps, and every
one of
A A them was just miserable.A Those are another 'race only' part,
and are
A A deafeningly loud and create a ton of vibration.A I find them
completely
A A intolorable for a street car, plus they take up a lot of
precious front
A A trunk space.A And they are more expensive than the simple
spacer shown
A A above.
A A Mike
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--
Sean Korb [11]spkorb at spkorb.org [12]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.A They can only give you answers." -P.
Picasso
A A A ------------------------------
_______________________________________________
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Posted emails must not exceed 1.5 Megabytes
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To manage your subscription (change email address, unsubscribe,
etc.) use the links above.
--
Sean Korb [15]spkorb at spkorb.org [16]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.A They can only give you answers." -P. Picasso
References
1. mailto:grayjim at cox.net
2. http://www.evsource.com/tls_braking_system.php
3. mailto:detomaso at poca.com
4. mailto:npdrs at maui.net
5. http://www2.cougarpartscatalog.com/bossspace.html
6. http://image1.cougparts.com/dc/16203/1430333053_l.jpg
7. http://image1.cougparts.com/dc/16203/1430333006_p.jpg
8. http://image1.cougparts.com/dc/16203/1430333005_g.jpg
9. mailto:DeTomaso at poca.com
10. http://poca.com/mailman/listinfo/detomaso_poca.com
11. mailto:spkorb at spkorb.org
12. http://www.spkorb.org/
13. mailto:DeTomaso at poca.com
14. http://poca.com/mailman/listinfo/detomaso_poca.com
15. mailto:spkorb at spkorb.org
16. http://www.spkorb.org/
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