Can't get my (heater) hose to stay in the hole

[HanksDeuce]

I'm working up some defrost duct connections to a M151 heater.
Has anyone made the 2" and a 2.5" diverter box outlets "mate up" to a 3" duct?

Below are a few links to the website where I purchased all of my silicone couplers and elbows to fab up my intercooler + intake piping for my Cummins 6BT in my bobbed deuce. They are one of the cheaper silicone dealers out there, and no issues with the quality or shipment time.

Straight reducers:
http://www.siliconeintakes.com/intake-pipe-reducer/?osCsid=8172ae7956331ec9590902435b063bbf

Bending reducers:
http://www.siliconeintakes.com/bending-reducer/

 

[gimpyrobb]

No dummy, he was talking about connecting the heater intake duct to pull from inside the cab, so it will recirculate heated air, and make the inside of the truck stay warmer.

That was almost an 8yo post...

 

[Jeepsinker]

Someone should have called him out eight years ago then... Slackers! You guys are slacking!

 

[TsgtB]

Question:
Will it loose too much flow or "effective pressure" if i use full 3" ducting. (fan to dash)
Or would 2" and 2.5" ducting be more effective and make modifications at the top. (windshield difuser)
(would it make any real difference at all?)

Sorry about the old post.

 

[rustystud]

Question:
Will it loose too much flow or "effective pressure" if i use full 3" ducting. (fan to dash)
Or would 2" and 2.5" ducting be more effective and make modifications at the top. (windshield difuser)
(would it make any real difference at all?)

Sorry about the old post.

The problem would be finding a vent that would fit in there on the deuce. Also you must split the air-flow for both windows so you would never get the passenger side to do much as most air would go on the drivers side. Stay with the factory hoses.

 

[Jeepsinker]

I got aluminized tubing to fit mine at the hardware store. It's just dryer vent ducting. I thought it was 3". Works great.

 

[TsgtB]

I have the thicker 3" aluminum flex tube from Lewe's, I'll give it a shot first, with some hand made adapters.
(better than nothing)

Thanks for all the help.

 

[Jeepsinker]

Adapters? I didn't need any adapters for mine, they went right on just like the originals.

Wait, from heater box to diverter box, or diverter box to vents?

 

[TsgtB]

From diverter box to vents....

 

[Jeepsinker]

You shouldn't need any adapters. Just get the right size hose. It's cheap.