RDT into exhaust

Ironman03R · Nov 30, 2007

While I have the DP off I'm thinking about putting a RDT there. How long and what diameter hose will I need?
Would a check valve like ones used on race car crankcase evac system be needed?
I know some are running it in @ a 45* angle w/o check valve, Hows that working for those who have?
I know this topic comes up a lot so I tried to search it, but RDT is too comon.

Dsl_Dog_Treat · Nov 30, 2007

Steve, I installed a venturi into the exhaust stream using a 1" diameter piece of black pipe. I cut the tip to a 45 degree angle and welded it into place. I stuck it in about 1.5" in into the 4" exhaust pipe.
Lemme warn ya. The perma grin ya get from the added turbo whistle will significantly decrease you fuel mileage. ;Really

I've had no problems so far and wished I would have done it sooner. ;Sweet

Ironman03R · Nov 30, 2007

So did you weld it straight into the pipe like a T or at a 45? I'm assuming the the angle on the end is facing downstream in the exhaust.

6 Nebraska IDIs · Nov 30, 2007

So let me understand this correctly. You're plumbing the RDT into the exhaust without putting some sort of check valve in it? Can somone please do a tech article on this? My whole family are good welders and I personally along with my mom hate the smell of the RDT blow by.

Dsl_Dog_Treat · Dec 1, 2007

Ironman03R said:
So did you weld it straight into the pipe like a T or at a 45? I'm assuming the the angle on the end is facing downstream in the exhaust.

Yes, I angled the pipe in at a 45 and then 45'ed the tip. ;Sweet

No check vavle installed and while the truck is just idling there is just enough draw to pull the crankcase vapors out and all the way back.

Currently I installed a T into the system at a low point to allow any condensed vapors/oil dump out instead of entering the exhaust pipe. I've got a RDT filter/containment system designed just haven't had the time to get it installed.

Ironman03R · Dec 2, 2007

So the opening in the pipe is facing straight back into the pipe?
I wonder if putting it straight into the pipe like a T with a 45 on the end would create more of a venturi effect.
So I need 1" diameter hose? How long? Like 6 feet?

SIKPUP · Dec 2, 2007

I used this kit with a ford anti-backfire gasser check valve with 1 inch heater hose off the Banks adapter. I know the heater hose is not best ,but I keep an eye on it. ( cheap to replace ) This was done three years ago , no problems yet !

http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_750022_-1_11523

Mike

The Warden · Dec 3, 2007

SIKPUP said:
I used this kit with a ford anti-backfire gasser check valve with 1 inch heater hose off the Banks adapter.

I can't remember if I've asked this before or not (my memory's about fried), but do you by chance have a part number for the check valve that you used? Did it thread directly onto the venturi fitting, or did you have to adapt it?

Thanks! I really need to get my exhaust hooked up... :angel:

Timthetoolman · Dec 3, 2007

Dsl_Dog_Catcher said:
Steve, I installed a venturi into the exhaust stream using a 1" diameter piece of black pipe. I cut the tip to a 45 degree angle and welded it into place. I stuck it in about 1.5" in into the 4" exhaust pipe.
Lemme warn ya. The perma grin ya get from the added turbo whistle will significantly decrease you fuel mileage.

I've had no problems so far and wished I would have done it sooner.

How does an RTD add to the turbo whistle?

Darrin Tosh · Dec 3, 2007

Dont know but believe me it Does! I have heard the truck personally, ;Sweet

SIKPUP · Dec 3, 2007

The Warden said:
I can't remember if I've asked this before or not (my memory's about fried), but do you by chance have a part number for the check valve that you used? Did it thread directly onto the venturi fitting, or did you have to adapt it?

Thanks! I really need to get my exhaust hooked up...

I'll look and see if I can find a number, They were left over from my mechanic days. I think I needed a 1/2'' coupling to screw them together.

Mike

The Warden · Dec 3, 2007

Thanks, Mike...I know I've asked you countless questions about your setup (mainly because I'm basically planning mine to be essentially identical to yours), so thanks for your patience!! ;Sweet

Agnem · Dec 4, 2007

Be forwarned, that there are different ways that you can do this, and the key difference is that Ron's method allows for the venturi to draw air from either the crankcase, or atmosphere. This is an important difference!

Dsl_Dog_Treat · Dec 4, 2007

Agnem said:
Be forwarned, that there are different ways that you can do this, and the key difference is that Ron's method allows for the venturi to draw air from either the crankcase, or atmosphere. This is an important difference!

Yeppers. That way I'm not hurting anything in the event there may be a back fire. Plus I don't have to worry about the venturi system drawing too much vaccum on the motor imploding the seals.

As far as the added whistle, the only thing I can even remotly think of as a cause is the exhaust flowing over the tip of the venturi, kinda like blowing across the top of a pop bottle. :dunno

dansvan · Dec 4, 2007

Do you have a diagram or sketch of this with the "t"?

RDT into exhaust

Ironman03R

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Dsl_Dog_Treat

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Ironman03R

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6 Nebraska IDIs

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Ironman03R

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SIKPUP

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Darrin Tosh

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