Stealth Conversions, The Parts Division of JTR (Jaguars That Run)

  Air Cleaners, Air Cleaner Ducting  

Stealth Conversions
The Parts Division of JTR (Jaguars That Run)

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Air Cleaners, Air Cleaner Ducting for V8 Conversions
Air Cleaners and Ducting— Illustration of types of ducting, with specs table:
Elbows and Tubing for Air Cleaner Ducting

Elbows and Tubing for Ducting, See numbered specs below—

1.

90° rubber elbow, 4" i.d. .25" wall thickness.

Choose Quantity/Price:

 

7.

90° rubber elbow, 4" i.d. .25" wall thickness.
Same as #4. Can be connected to throttle body.
Shown above with 4" o.d. aluminum tubing.

2.

90° rubber elbow, 3.5" i.d. .25" wall thickness.

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8.

90° rubber elbow, 4" i.d. x 3.5 " .19 " wall thickness. Can be connected to throttle body and to #6. Shown with 3.5" o.d. aluminum tubing. See pages 9-10 and 9-11 of manual for installation.

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3.

90° rubber elbow, 3" i.d. .25" wall thickness.
Stretchable to 3.5" with lots of effort. See page
8 of manual.

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9.

90° rubber elbow, 4" i.d. x 3.0 " .25 " wall thickness. Can be connected to throttle body. Shown with 3" o.d. aluminum tubing.
See page 9-12 of manual for installation.

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4.

45° rubber elbow, 4" i.d. .25" wall thickness.

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10.

4" o.d. aluminum tubing. 1 foot length shown.

Choose Length

5.

45° rubber elbow, 3.5" i.d. .25" wall thickness.

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11.

3" o.d. aluminum tubing. 1 foot length shown.

Choose Length

6.

45° rubber elbow, 3" i.d. .25" wall thickness.

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12.

3.5" o.d. aluminum tubing. 1 foot length shown.

Choose Length

Below: Air Cleaners and Ducting—1966 Chevy II

Air Cleaner Ducting in 1966 Chevy II

1966 Chevy II

Above: This 1966 Chevy II (Nova) has a 1985 305 TPI engine from a Camaro. The air cleaner ducting is 4x3x90° at the throttle-body and 3x90° to the air cleaner.

Below: Air Cleaners and Ducting—Close-up of ducting from a different angle

Air Cleaner Ducting in 1966 Chevy II

Close-up from a different angle

4x3x90° rubber elbow has thick wall (7/16") at the 3" end, affecting fit of connector to the MAF sensor. This hose was trimmed so the wall thickness was only 1/4" in the area of the connector. This can be done with a razor blade, or with a belt sander.

Air Cleaners and Ducting—from book: Chevrolet S-10 Truck V-8 Conversion

Cold Air Induction:

TPI S-10, Cold Air Induction, air cleaner ducting

TPI S-10, Cold Air Induction

On this TPI S-10, the air cleaner ducting is connected to an air filter from a 1993 S-10 with the 4.3 V6 CPI engine, which gets cool air from in front of the radiator.

Originally, this TPI engine used an open element air filter connected directly to the throttle body. The radiator would heat the intake air to about 200° F on warm days.

With the system shown, the owner claims the temperature of the air going into the engine was reduced by over 60° F. Typically, power increases 1% for every 11° F temperature drop of the intake air due to the increased density of the cooler air. In this application, the ducting is good for a 5% power increase (better than using some headers!). If you look at the TBI trucks and the ZZ3 truck shown in the introduction, you will see that they have ducting to the cooler outside air.

Another benefit from using the ducting and the air cleaner shown is that it substantially reduces intake noise compared to an open element air filter.

More information on air cleaner ducting and where to get it is in JTR's Chevrolet TPI & TBI Engine Swapping manual — See next section below (ordering information is in the back of this manual). The ducting shown, from the throttle body to the air cleaner assembly are: 4x3.5x90, 3x90, 3x90, 3x45, 3x45.

Air Cleaners and Ducting—from book: Chevrolet TPI & TBI V-8 Engine Swapping

The rubber ductng shown above can be trimmed or stretched to accomodate a wide variety of installations. 1" long pieces of the aluminum tubing can be placed inside the elbow to form the cross-section into a desired shape. For example, it is often necessary to flatten, or ovalize the ducting for clearance reasons. When connecting rubber pieces together, 2" long pieces of aluminum tubing work well as a splice.

Air Cleaner Ducting

We have found that the only way to make a car run cool while towing is to use an engine-driven fan. Electric cooling fans just don't make the grade when towing heavy loads up hills. The ducting shown accomodates an engine-driven fan and is flexible enough to allow for normal engine movement. The car shown below is a 1981 Chevrolet Malibu (G-Body). The parts used are listed below the photograph.

Air Cleaner Ducting Installed

Air Cleaner Ducting Installed

1.

4" x3.5" x90° rubber elbow.


5.

MAF sensor, or 3" o.d. aluminum tubing.

2.

3"x90° rubber elbow with 1" long 3" o.d. aluminum tubing inside that has been flattened (ovalized) to improve hood clearance and appearance.

 

6.

Duct from 1988–1989 Pontiac Firebird TPI.

3.

3"x90° rubber elbow.

 

7.

Not visible. "Top loader" air cleaner from 1988–1992 TPI Pontiac Firebird.

4.

3"x45° rubber elbow

 

8.

Upper radiator hose is from 1991 Caprice. It is spliced into an upper radiator hose of a 1988–1992 Camaro TBI. The thermostat housing is also from a 1988–1992 Camaro TBI.

 

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JTR engine swapping manuals are available directly from JTR Publishing,
As well as through a number of retailers, including:
Summit Racing (S-10: Part #JTR-S10; Jaguar: Part #JTR-JAG),
JEGS (S-10: Part #116549; TPI & TBI: Part #117942),
Steve Smith Autosports (S-10: Part #S212; TPI & TBI: Part #S195), and
Classic Motorbooks (S-10: Part #116549; TPI & TBI: Part #117942;
  Jaguar: Part #118438; Datsun Z: Part #115501; Volvo 200: Part #122587).


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