[DeTomaso] Cain (AussieSpeed) Cleveland IDF Manifold

Sun Jan 27 19:59:28 EST 2013

I don't think they pull any vacuum at all at idle.  That's one of the
disadvantages of them.  Try it at 3000RPM and see if it's different.
It's supposed to pull enough to prevent detonation caused by
contamination while running down the drag strip.  I have loosely
sprung piston rings and polished cylinders in my Cougar and PVC
control is difficult and honestly I've only been considering the
modification.  I also know a couple of drag racers that use a pump off
the accessory belt system to evacuate the crankcase.
http://www.hotrod.com/techarticles/engine/hdrp_0607_joe_sherman_built_ford_windsor/photo_21.html

sean

On Sun, Jan 27, 2013 at 7:06 PM, Will Kooiman <will.kooiman at gmail.com> wrote:
> I tried exhaust taps, but it didn't pull enough vacuum.  The mufflers were
> 3" Borla XR-1s with very little restriction.
>
> The valve covers were always oily until I switched to a regular PCV.
>
>
> I might not have put the tap far enough into the exhaust stream.  I
> measured about 1/2" Hg of vacuum at idle.
>
> --
> Will
>
>
>
>
>
> On 1/27/13 5:14 PM, "Sean Korb" <spkorb at gmail.com> wrote:
>
>>You could... go electronic managed coil packs instead or an electronic
>>actuated dizzy.  PCV can be handled by exhaust taps
>>http://vibrantperformance.com/catalog/product_info.php?cPath=1022_1069&pro
>>ducts_id=1243
>>Vacuum accessories can use a pump:
>>http://www.amphibike.org/index.cgi?page=pages/3_wheels/mr2/ev_powerBrakes
>>
>>Complexity and expense added but...
>>
>>sean
>>
>>On Sat, Jan 26, 2013 at 1:40 PM, Will Kooiman <will.kooiman at gmail.com>
>>wrote:
>>> That's very good information.  Good job.
>>>
>>> Those air filters should fit without touching.  I think I've seen them
>>>on
>>> a V8 before.
>>>
>>> One note I forgot.  Weber manifolds don't have vacuum ports.  IDA
>>> carburetors don't either.  IDF carburetors might.
>>>
>>> When you lose the vacuum, you lose
>>>
>>> 1.  Vacuum advance to the distributor.
>>> 2.  Vacuum boost to the brakes.
>>> 3.  PCV valve.
>>>
>>> I'm not sure what to do about vacuum advance.  Holleys work well with
>>> vacuum advance, but they also lean out at high vacuum (power valve
>>> closed).  I haven't gone there yet on my Webers.  Once I get my car back
>>> on the road, I'll tune everything with an O2 sensor.
>>>
>>> I switched to manual brakes well before I switched to Webers, so losing
>>> vacuum boost was a non-issue for me.
>>>
>>> If you don't run some type of PCV, you will get an oily mess on the
>>>engine.
>>>
>>> --
>>> Will
>>>
>>>
>>>
>>>
>>>
>>> On 1/26/13 12:59 AM, "Corey Price" <coreyjprice at gmail.com> wrote:
>>>
>>>>As promised, Part III:
>>>>
>>>>http://pantera1998.blogspot.com/2013/01/weber-carburetors-part-iii.html
>>>>
>>>>Hope this helps those of you with questions.  I haven't even got to the
>>>>EFI fun yet, but it's cool.  Working on it now.
>>>>
>>>>Corey
>>>>
>>>>
>>>>
>>>>
>>>>On Jan 25, 2013, at 6:14 PM, Julian Kift wrote:
>>>>
>>>>>
>>>>> Got a quote from Racetep as follows;
>>>>>
>>>>> Single Kit to include; 4 x 48 IDF's, IDF linkage, braided fuel lines,
>>>>>Heat Insulating Mounting gaskets for $2050 + shipping. For a group buy
>>>>>of 5 the price comes down to $1850 ea.
>>>>>
>>>>> Julian
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> Given that 302 48IDF complete setups sell new for $2795 to $2995 ready
>>>>>to bolt on I'd say nearer the $3,250 mark for a 351C complete setup
>>>>>given the manifold is more expensive. Corey has done some research work
>>>>>in that area I believe, who knows maybe a group buy to be had there
>>>>>too,
>>>>>asssuming most want to go IDF's and not use the manifold for a low
>>>>>profile EFI setup.
>>>>>
>>>>> Julian
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Fri, Jan 25, 2013 at 1:47 PM, <cengles at cox.net> wrote:
>>>>>
>>>>> Dear Julian and Corey,
>>>>>
>>>>>
>>>>>                I have always been a fan of the Webers stack, but I
>>>>>have
>>>>> learned that it does come with a price.   Given the availability of an
>>>>> excellent Cleveland IDF intake manifold for IDF Webers,
>>>>>then........what
>>>>> would the associated costs be for eight IDF carbs plus throttle
>>>>>linkage
>>>>> plus anything else pertinent to such a project??   $825 + shipping +
>>>>> carbs + special throttle linkage = about how much to have a stack of
>>>>>IDF
>>>>> Webers atop the Cleveland?
>>>>>
>>>>>
>>>>>                          Curious,  Chuck Engles
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
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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
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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