Fernando Mendes Posted June 28, 2022 Report Share Posted June 28, 2022 "Extreme rear position" crankcase ventilation tube?? Quote Link to comment Share on other sites More sharing options...
9 foot box Posted June 29, 2022 Report Share Posted June 29, 2022 It means that with the draft tube installed on the engine, you loosen the bolt holding the draft tube and point the tube down and back as far as it will go before hitting the bell housing. Tighten the bolt to hold it in place. When the truck is in motion it helps to create a vacuum to pull the fumes and vapors from the crankcase. Rick D. 1 1 Quote Link to comment Share on other sites More sharing options...
Fernando Mendes Posted June 29, 2022 Author Report Share Posted June 29, 2022 My IND-251 only has a cap in the oil filler.It has the downdraft tube under the exhaust manifold too. Quote Link to comment Share on other sites More sharing options...
Fernando Mendes Posted June 29, 2022 Author Report Share Posted June 29, 2022 9 foot box.I think my tube is correct. Quote Link to comment Share on other sites More sharing options...
9 foot box Posted June 30, 2022 Report Share Posted June 30, 2022 The diagonal cut at the bottom of the tube, helps to keep a positive flow. I guess on a stationary engine, the flow would be created by the fan, when ran up to operation speed. I would suggest that you rethink your fuel line from the pressure side of the pump to the carburetor. If that second picture is a picture of your engine. Rick D. Quote Link to comment Share on other sites More sharing options...
Fernando Mendes Posted June 30, 2022 Author Report Share Posted June 30, 2022 My fuel line CARTER pump(original) to CARTER E7T2 B&B carburetor with CARTER filter since april 2019.Before I used a brazilian DFV carburetor during 32 years. Quote Link to comment Share on other sites More sharing options...
lostviking Posted July 5, 2022 Report Share Posted July 5, 2022 Unless it's a show truck, I would seriously consider going to the PowerWagon website and getting the PCV upgrade the military put in. Quote Link to comment Share on other sites More sharing options...
greg g Posted July 6, 2022 Report Share Posted July 6, 2022 Copper tubing is not recommended for fuel line. It is known to be prone to brittle with vibration. How long does this take? I have no idea. But have seen it on an old garden tractor. Tube split and began to leak. Keep your eye on it. The new brake line stuff might be a better material, almost as easy to bend as copper. As for the road drft tube, both my engines had it mounted very close to vertical. I have seen them mounted angled back toward the foot well. Seems to me that would lessen the area where the low pressure area develops. Quote Link to comment Share on other sites More sharing options...
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