STD Tuning Engine OM602 air box butterfly valve

OM602 air box butterfly valve

OM602 air box butterfly valve

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jegesmesh
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Naturally-aspirated

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10-08-2016, 12:56 PM #1
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[Image: m3KTMMdwx4OYDvjisSnuMow.jpg]

What is the purpose of this valve and is it safe to remove the whole unit?
MB 250D W124 OM602.982 2.9 swap '92 5 SPEED MANUAL
MB E320 CDI W211 '04
jegesmesh
10-08-2016, 12:56 PM #1

[Image: m3KTMMdwx4OYDvjisSnuMow.jpg]

What is the purpose of this valve and is it safe to remove the whole unit?

MB 250D W124 OM602.982 2.9 swap '92 5 SPEED MANUAL
MB E320 CDI W211 '04

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Y444TES
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Naturally-aspirated

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10-13-2016, 02:34 PM #2
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I don't think that's off an om602 as they are 5 cylinder and that air box looks like its off a 4 cylinder like om601
Y444TES
10-13-2016, 02:34 PM #2

I don't think that's off an om602 as they are 5 cylinder and that air box looks like its off a 4 cylinder like om601

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Bigpanda16
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K26-2

26
10-14-2016, 07:05 PM #3
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I think n/a om602's share the same style air filter box
78 300D, 87 190D, 94 E320, 95 E300D
Bigpanda16
10-14-2016, 07:05 PM #3

I think n/a om602's share the same style air filter box

78 300D, 87 190D, 94 E320, 95 E300D

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NZScott
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HX30W 73/44mm

398
10-14-2016, 09:11 PM #4
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I don't know about the 60x engines but many other diesels have a throttle valve that closes when the engine shuts off A) for stopping the engine bouncing off compression and rocking when shutting off and B) a handy side effect of a safety feature if the engine ever ran away somehow.
1978 300D, 373,000km... OM617.912 with a Holset HX30W, 7.5mm IP, 711.113 5 speed (project car, 7 years off the road and counting ;/)
1977 250 270,000km (parts car)
1977 300D (ex 280) 500,000km
1981 240D 498,000
1975 HJ45 ???,000
2001 2.8TD Rodeo 4x2 - 456,000 - DD




NZScott
10-14-2016, 09:11 PM #4

I don't know about the 60x engines but many other diesels have a throttle valve that closes when the engine shuts off A) for stopping the engine bouncing off compression and rocking when shutting off and B) a handy side effect of a safety feature if the engine ever ran away somehow.

1978 300D, 373,000km... OM617.912 with a Holset HX30W, 7.5mm IP, 711.113 5 speed (project car, 7 years off the road and counting ;/)
1977 250 270,000km (parts car)
1977 300D (ex 280) 500,000km
1981 240D 498,000
1975 HJ45 ???,000
2001 2.8TD Rodeo 4x2 - 456,000 - DD




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R-3350
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Dreaming of compounds

182
10-14-2016, 10:31 PM #5
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i would think that it would be for the EGR system. the turbocharged engines use an ARV that bleeds boost to allow more exhaust to feed into the intake. on an NA engine you could get the same effect with a throttle valve to create vacuum.
R-3350
10-14-2016, 10:31 PM #5

i would think that it would be for the EGR system. the turbocharged engines use an ARV that bleeds boost to allow more exhaust to feed into the intake. on an NA engine you could get the same effect with a throttle valve to create vacuum.

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DiseaselWeasel
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Holset

420
10-15-2016, 03:22 PM #6
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That is correct. This is part of the EGR.
____________________________________

'88 300CD Turbo Coupé - OM603
DiseaselWeasel
10-15-2016, 03:22 PM #6

That is correct. This is part of the EGR.

____________________________________

'88 300CD Turbo Coupé - OM603

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