Still Another Cold Air Intake

[Joe Gilbert]

Hope the photos are attached. First time I've added photos.

I have seen several posts showing "Cold Air Intake" designs and thought I would show you mine.

My design differs only by mounting the filter/air-box vertically. My National RV-Dolphin has sufficient room forward of the radiator to add a 90' sweep fitting to the uasual 4" tubing.

The photos show 1: The mount I welded off the frame to support the 4" tubing. 2: The filter with the bracket I made to support the air-box. 3: The final assembly.

The air-box is somewhat cosmetic as there are 7 2" holes in the box to allow air to flow to the filter. Still; the box does make the assembly look somewhat professional.

Components

4" tubing from Home Depot racing section (painted Workhorse black)
2 4" 45' fittings
1 90' fitting
1 4" to 4" rubber coupling

S&B RO862 filter (I have seen many reference the RO832 filter however, the 832 has a 3.5" ID whereas the 862 has a 4"ID)

After reinstalling the ECM (Reprogrammed by Mike/Jeff) a 40 mile road trip shows the air intake noise to be slightly greater than the stock filter, but only when heavy on the go-pedal. I'll be heading for CO. next week, than on to FL. I'll report on the air-intake, power, and fuel millage after this trip.

[Joe Gilbert]

Hope the photos are attached. First time I've added photos.

I have seen several posts showing "Cold Air Intake" designs and thought I would show you mine.

My design differs only by mounting the filter/air-box vertically. My National RV-Dolphin has sufficient room forward of the radiator to add a 90' sweep fitting to the uasual 4" tubing.

The photos show 1: The mount I welded off the frame to support the 4" tubing. 2: The filter with the bracket I made to support the air-box. 3: The final assembly.

The air-box is somewhat cosmetic as there are 7 2" holes in the box to allow air to flow to the filter. Still; the box does make the assembly look somewhat professional.

Components

4" tubing from Home Depot racing section (painted Workhorse black)
2 4" 45' fittings
1 90' fitting
1 4" to 4" rubber coupling

S&B RO862 filter (I have seen many reference the RO832 filter however, the 832 has a 3.5" ID whereas the 862 has a 4"ID)

After reinstalling the ECM (Reprogrammed by Mike/Jeff) a 40 mile road trip shows the air intake noise to be slightly greater than the stock filter, but only when heavy on the go-pedal. I'll be heading for CO. next week, than on to FL. I'll report on the air-intake, power, and fuel millage after this trip.

["007"]

Good job Joe I post your pics for you hope they are in the order you wanted.
Rechecked your pics the support pic #1 is your grease fitting Support pic is not there.
If you add to photos I'll put it in.

[Joe Gilbert]

I was concerned I would mess up posting the photos. The Photo with the grease fitting will be posted on another topic (adding a grease fitting to the brake assembly on a Dolphin).

The missing photo just shows a bracket I welded on the frame to support the 4" pipe and has no real value.

Thanks, guys for the help.

Joe

[Tom N]

What is the red handled valve in photos 2 & 3???

[FrontRangeRVer]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Tom N:
What is the red handled valve in photos 2 & 3??? </div></BLOCKQUOTE>

I'm guessing ball valve for the (horrible) hot water return for the air conditioner that Workhorse uses....

[Joe Gilbert]

As you surmise the red ball valve is a shut-off for the line to the heater. I don't think I had a problem with the stock valve however, adding the manual valve is easy and I now know it will be all the way off during AC weather.

We'll head out for a 5000 mile drive Sunday. I'm really looking forward to see how well the Ultra-Power ECM changes and the new C.A.I. work.