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volkswagen:paris_dakar_modifications [2026/10/27 23:31] – [Paris-Dakar Vehicle Modifications] adminvolkswagen:paris_dakar_modifications [2026/10/28 18:40] (current) – [Auxiliary Equipment] admin
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 ====== Paris-Dakar Vehicle Modifications ====== ====== Paris-Dakar Vehicle Modifications ======
-The Paris-Dakar Iltises started as 1979 Bundeswehr-specification Iltises, straight from the Ingolstadt production line. They were fitted with several modifications to [[#performance|improve performance]], [[#safety|enhance safety]], and accommodate additional [[#aux|auxiliary equipment]]. These changes were intended to prepare the vehicles for the demanding conditions of the rally while retaining the Iltis's proven design and mechanical simplicity.+The four Paris-Dakar Iltises were based on 1979 Bundeswehr-specification vehicles, sourced directly from Audi's main production plant in Ingolstadt, Germany. Each was subsequently modified to [[#performance|improve performance]], [[#safety|enhance safety]], and accommodate additional [[#aux|auxiliary equipment]]. These modifications were intended to prepare the vehicles for the demanding conditions of the rally while retaining the Iltis's proven design and mechanical simplicity.
  
 {{anchor:performance}} {{anchor:performance}}
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 **Iltis No. 138: 5-cylinder, 2.1-litre, Audi engine in an extended engine compartment**<wrap right small_text>Click image to enlarge.</wrap> **Iltis No. 138: 5-cylinder, 2.1-litre, Audi engine in an extended engine compartment**<wrap right small_text>Click image to enlarge.</wrap>
 </WRAP> </WRAP>
-The most significant engine modification was made to Iltis No. 138, which received a complete engine transplant. Its original 1.7-litre engine was replaced with a naturally aspirated 2.1-litre (2,144 cc) inline-five derived from Audi's production //5E// engine. Equipped with Bosch K-Jetronic mechanical fuel injection, the engine was reportedly tuned to produce an estimated 150–160 hp. Accommodating the longer engine required extending the engine compartment, moving the radiator forward by approximately 20 cm and lengthening the hood.+The most significant engine modification was made to Iltis No. 138, which received a complete engine transplant. Its original 1.7-litre engine was replaced with a naturally aspirated 2.1-litre (2,144 cc) inline-five found in the Audi 100 series. Equipped with Bosch K-Jetronic mechanical fuel injection, the engine was reportedly tuned to produce an estimated 150–160 hp. Accommodating the longer engine required extending the engine compartment, moving the radiator forward by approximately 20 cm and lengthening the hood.
  
 The other three Iltises (No. 136, No. 137, and No. 139) retained their factory 1.7-litre gasoline engines, modified to produce an estimated 110 hp. These engines reportedly featured a larger, dual-barrel carburetor (likely a Zenith 32 NDIX from the [[:dkw_munga|DKW Munga]]) and a more aggressive camshaft and/or modified cylinder head to increase power. The other three Iltises (No. 136, No. 137, and No. 139) retained their factory 1.7-litre gasoline engines, modified to produce an estimated 110 hp. These engines reportedly featured a larger, dual-barrel carburetor (likely a Zenith 32 NDIX from the [[:dkw_munga|DKW Munga]]) and a more aggressive camshaft and/or modified cylinder head to increase power.
  
 === Transmission and Rear Differential === === Transmission and Rear Differential ===
-All four Iltises retained their standard transmission gearing and rear differential. However, for Iltis No. 138, which produced more than 150 hp, the engineers decided to lock the transmission in four-wheel drive, believing that the increased power would make the vehicle difficult to control when driven on a single axle. Jean Ragnotti, who had extensive experience in rear-wheel-drive rally cars, later expressed regret over this decision, as it limited his ability to use the throttle to help rotate the car through corners.+All four Iltises retained their standard transmission gearing and rear differential. However, for Iltis No. 138, which produced more than 150 hp, the engineers decided to lock the transmission in four-wheel drive, believing that the increased power would make the vehicle difficult to control when driven on a single axle. Jean Ragnotti, the driver of Iltis No. 138, who had extensive experience in rear-wheel-drive rally cars, later expressed regret over this decision, as it limited his ability to use the throttle to help rotate the car through corners.
  
 === Fuel === === Fuel ===
-A second, backup fuel pump was installed and could be manually activated by the driver.+A second, backup fuel pump was installed and could be manually activated by the driver. <del>reserve tank ????</del>
  
 === Intake === === Intake ===
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 === Exhaust === === Exhaust ===
 The exhaust pipe was shortened to exit on the passenger side, just ahead of the rear wheel. A full-length exhaust system was unnecessary, while the shorter pipe reduced the risk of snagging on obstacles during the rally. The exhaust pipe was shortened to exit on the passenger side, just ahead of the rear wheel. A full-length exhaust system was unnecessary, while the shorter pipe reduced the risk of snagging on obstacles during the rally.
 +
 +=== Brakes ===
 +The braking system remained in factory specification, with //no// reported modifications to the brakes to compensate for the increased engine output. Reportedly, this was particularly significant for Iltis No. 138 with nearly twice the horsepower of a stock Iltis.
  
 {{anchor:safety}} {{anchor:safety}}
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 <WRAP hide_borders> <WRAP hide_borders>
-| **Tachometer** | VDO | 7,000 rpm | |+| **Tachometer** | VDO | 400--7,000 rpm ||
 | **Oil Pressure** | VDO | 0--10 bar | Labelled: "''OEL-DRUCK''" | | **Oil Pressure** | VDO | 0--10 bar | Labelled: "''OEL-DRUCK''" |
 | **Oil Temperature** | VDO | 50--150 °C | Labelled: "''OEL-TEMP.''" | | **Oil Temperature** | VDO | 50--150 °C | Labelled: "''OEL-TEMP.''" |
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 <WRAP hide_borders> <WRAP hide_borders>
 | **Red Indicator Light** | At top left of fuse panel. Unknown use. See [[#more_information_needed|More Information Needed]]. || | **Red Indicator Light** | At top left of fuse panel. Unknown use. See [[#more_information_needed|More Information Needed]]. ||
-| **Fuel Pump Switch** | Used to activate/deactivate the second, backup, fuel pump. | Labelled: "''2. KRAFTSTOFFPUMPE''" | +| **Fuel Pump...** | See [[#more_information_needed|More Information Needed]]. | Labelled: "''2.KRAFTSTOFFPUMPE''" | 
-| **Rally Lights Switch** | Used to activate/deactivate the rally lights. | Labelled: "''FERNSCHEINW.''" |+| **Rally Lights...** | See [[#more_information_needed|More Information Needed]]. | Labelled: "''FERNSCHEINW.''" |
 </WRAP> </WRAP>
  
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 **Ash Tray** --- Curiously, an ash tray was installed directly onto the plastic windshield defrost duct. **Ash Tray** --- Curiously, an ash tray was installed directly onto the plastic windshield defrost duct.
  
-**trip master rally computers, and radios** +**Rally Computers and Radio** --- Directly in front of the co-driver was mounted rally equipment and communications radio. Details/models are unknown. See [[#more_information_needed|More Information Needed]].
- +
-**Communications Radio** --- Directly in front of the co-driver was mounted a communications radio.+
 ==== More Information Needed ==== ==== More Information Needed ====
 === Seats === === Seats ===
-<del>The seat fabric appears to be from a late 1970s Audi. The foundation of the seat may be Audi as well, but is unknown.</del>+The exact origin of the seats remains unknown. The tan-coloured upholstery fabric and pattern are consistent with those used in late-1970s Audi models, while the seatbacks resemble those fitted to civilian Iltises, featuring integrated headrests and black plastic rear panels. However, the large side bolsters on the seat cushions differ from both of these designs, making a definitive identification difficult.
  
 === Electrical === === Electrical ===
-<del>Converted from 24 volt to 12 volt???</del>+As 1979 Bundeswehr-specification vehicles, the Iltises would originally have been equipped with 24-volt electrical systems. However, some of the additional rally equipment, including radios, auxiliary gauges, and rally lights, may have required 12-volt power. How this difference was accommodated remains uncertain. One possibility is that a voltage converter or separate 12-volt supply circuit was installed to power the additional equipment. Alternatively, the original 24-volt electrical system may have been replaced or extensively adapted to use the 12-volt system found in civilian Iltis models. 
 + 
 +== Indicator Lights == 
 +Two red indicator lights are on the dash of Iltis No. 137 --- one at the top left of the fuse panel, and one on the gauge pod. The use of either is unknown. 
 + 
 +== Rally Computers and Radio == 
  
 === Suspension === === Suspension ===
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 === Exhaust === === Exhaust ===
 +<del>was the exhaust larger</del>