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Author Topic:   Blow Through carbs
Kyle
Gearhead

Posts: 430
From: Sumner, WA
Registered: Dec 2001

posted 02-12-2002 06:09 PM     Click Here to See the Profile for Kyle   Click Here to Email Kyle     Edit/Delete Message   Reply w/Quote
Will a carter carb work well with a turbo set-up? Or will you have problems with the metering rods staying down in the jets? Same question for the holley DP- only will you have a problem with the power valve? Thinking about a twin turbo set up for my 73 mustang. Opinions?

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Moneymaker
Administrator

Posts: 27499
From: Lyons, IL, USA
Registered: May 99

posted 02-12-2002 06:15 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
The only carb that I ever had any luck with in a blow through application is an Autolite 4100. I have used Carters and Holleys both also with mixed results. The Holleys need extensive sealing of the throttle shafts and are very sensitive to boost variation. Carters are somewhat happy when pressurized in an enclosure or bonnet. They do have fits with their metering rods though. The next to extinct AFB's for supercharged Studebaker use worked best as they had many revisions specific to blow through needs.
Autolites need very few mods to be happy in a "blown" enviornment. Then again, neither do I!

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Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link

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Kyle
Gearhead

Posts: 430
From: Sumner, WA
Registered: Dec 2001

posted 02-12-2002 07:12 PM     Click Here to See the Profile for Kyle   Click Here to Email Kyle     Edit/Delete Message   Reply w/Quote
So what can you do to make a carter work in a blow through environment? Does the secondary air metering valve (the plate with weights on the end that covers the secondaries) still function normally? Why does the 4100 work so well? Just the design?

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Moneymaker
Administrator

Posts: 27499
From: Lyons, IL, USA
Registered: May 99

posted 02-12-2002 07:33 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
Yes Kyle, the inherant design of the Autolite lends it to blow through use. Very simple boosters that have several sensitive air bleads. Easy to convert to mechanical secondaries too. I would not even consider a Jimmy Carter peanut carb.

------------------
Alex Denysenko
Co-Administrator and Moderator
NHRA/IHRA/SRA member
NHRA and IHRA SS/LA National Record Holder '00, '01, & '02
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28
Part time secret agent license #0089
US Class Nationals link

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bluestreek
Gearhead

Posts: 1724
From: Athens,GA
Registered: Jul 2001

posted 02-12-2002 10:21 PM     Click Here to See the Profile for bluestreek   Click Here to Email bluestreek     Edit/Delete Message   Reply w/Quote
Jimmy Who???.... Must be from Alabama.

BS

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