1st Gen. Ram - All Topics Discussion for all Dodge Rams prior to 1994. This includes engine, drivetrain and non-drivetrain discussions. Anything prior to 1994 should go in here.

Quiet time

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Old 08-26-2008, 10:26 AM
  #16  
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Originally Posted by BRUISER
what is the reason?

just curious since my truck never got hot..
By venting underhood hot air, it'll keep the cab cooler and allow more airflow through the radiator/condenser and reduce the amount of hot air being sucked into the engine (as long as there's a way for cooler outside air to get to the air filter).

The claims are it'll reduce underhood temperatures by 100 degrees.
Old 08-26-2008, 11:15 AM
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I've got MR2 vents where the RAM 250 emblems are. Lower on the fender just in front of the door. My truck wasn't just painted, so I pulled the emblems and cut a big square hole !!!
https://www.dieseltruckresource.com/...d.php?t=212495
YES - I do need to get them powder coated...Paint won't do.
IT DID drop my underhood temps ~ 75 with the sensor sitting at the junction of the Intercooler pipe and the cast intake manifold.
Old 08-26-2008, 11:37 AM
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I figured it was for Hot air.. I just had not seen anyone else with a CTD mention there engine bay getting hot.. but dang a 75 - 100 degree drop is A LOT..
Old 08-26-2008, 01:06 PM
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Originally Posted by unixcowboy
I've got MR2 vents where the RAM 250 emblems are. Lower on the fender just in front of the door. My truck wasn't just painted, so I pulled the emblems and cut a big square hole !!!
https://www.dieseltruckresource.com/...d.php?t=212495
YES - I do need to get them powder coated...Paint won't do.
IT DID drop my underhood temps ~ 75 with the sensor sitting at the junction of the Intercooler pipe and the cast intake manifold.
I'll bet the drop was larger near the heater box / turbocharger.
Old 08-26-2008, 02:36 PM
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Ya---
Wife mentioned her feet were not on fire after the mod....

Then I went and put in a 4" DP
Old 08-26-2008, 02:42 PM
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OH -
one more little item ----

After you get the vents in, don't leave the truck idling in neutral ----
when the fan clutch kicks in
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