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BC Mack

MH engine air intake snorkel, yes or no?

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Greetings fellow Lodge members, just need your opinion here.....

the air intake on my E9 gets in the way of everything, it lays on top of the 'V' from back of cab and splays out to lay on top of my radiator, PITA when trying to work...

so, my 89 MH E9-500 parts truck came with the back of the cab snorkel type air intake and the steel supports for a twin exhaust just like mine..... hmmmmm

I have been told by a reasonable source that the ram air effect from the snorkel is better than the 'slot' over the radiator.

now, this is for a restored truck, not for show, not for more power, not to look "Aussie".... but when I look through my collection of MH photos and factory brochures there are very few trucks with the snorkel... why was that???

assuming I go ahead with the mod.... the intake cyclonic or swirl inducing housing (and I know one of you will tell me the official name for it) has what looks like a decal on it, looks like a sideways letter "T", was that factory and what did it say??... also, I know it to be black, but gloss or semi-gloss??

thanks for the help

BC Mack

 

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Edited by BC Mack
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agree 100% with you about that abortion piled on top of the engine` I have been watching for pieces to use to convert ours to a snorkel type intake . if you have the pieces by all means go for it

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after looking at what you have there ` I probably have enough stuff laying around to do the trick just have to look closer at what i have

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Nice to see the V8 Mack sharing company with a locomotive, being that it's the locomotive of trucks...

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As far as the vortex things goes, I was lead to believe it's for removing water. 

My dad over the years has 7 cab over Kenworth's. 5 of them didn't have them, 2 of them did. No correlation to engine or year. So it's anyone's guess. 

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"Snorkel Air Intake", in lieu of "Frontal Air Intake", was a factory option.

Included was a Donaldson Air Ram Moisture Eliminator.

Ryder Truck Rental chose the option on a majority of their MH Ultra-Liner purchases.

The option was paired with a 13-inch Donaldson air cleaner on non-sleeper cabs (CA60), and a 16-inch Donaldson air cleaner on sleeper cabs (CAS62).

The optional was available with Mack 6-cylinder, Mack V-8, Cummins and Caterpillar powertrains.

The option was not available on MH642/643 models with Detroit Diesel power.

The option had a retail price of US$562 for the CA60 cab with a weight addition of 47 pounds.

The option had a retail price of US$753 for the CAS62 cab with a weight addition of 54 pounds.

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The price point may be why you don't see many with the snorkel.

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23 hours ago, kscarbel2 said:

"Snorkel Air Intake", in lieu of "Frontal Air Intake", was a factory option.

Included was a Donaldson Air Ram Moisture Eliminator.

Ryder Truck Rental chose the option on a majority of their MH Ultra-Liner purchases.

The option was paired with a 13-inch Donaldson air cleaner on non-sleeper cabs (CA60), and a 16-inch Donaldson air cleaner on sleeper cabs (CAS62).

The optional was available with Mack 6-cylinder, Mack V-8, Cummins and Caterpillar powertrains.

The option was not available on MH642/643 models with Detroit Diesel power.

The option had a retail price of US$562 for the CA60 cab with a weight addition of 47 pounds.

The option had a retail price of US$753 for the CAS62 cab with a weight addition of 54 pounds.

KSC

thanks for the info

pic below is of a truck I was thinking of buying last year, it has the snorkel as you describe with the Donaldson intake, but mine is an all aluminum unit hence my "conclusion" it is a Maradyne...

BC Mack

nanaimo06.JPG

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Does it need raised?   Looks good to me.      Would a spare tire basket from under a trailer work?   That would hide the tire under the  frame. 

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Hobert.... I have a simple design in mind that copies a common tire carrier seen more in eu and uk.... maybe drivers there still know how to change a flat without a cellphone..!!!   a trailer tire basket still involves a struggle in-out

have added photos showing the basis on the design, has a built in winch which I may make detachable, it also serves as a step.

Swishy... agreed, by rotating the air cleaner so the intake is horizontal will raise the tube 2-3 inches... the parts are oem from 1989 and I went with the old rub marks for position.

BC Mack

 

spare tire carrier example.jpg

rc2 stripes sample 2.jpg

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I liked that tire carrier until I realized it requires a wheel. I am planning on two spare racks on my trailer, but normally carry tires unmounted. I will stick with the basket type.

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I thought of your MH when I was at a local show and saw this snorkel on this F model. I estimate the bottom of his snorkel sits 14 inches above his cab. He thinks that it is factory. It may need to sit that high to get into the air flow coming over the top of the cab. If it is too low it will be in a negative pressure area but I do not know how much that would affect engine performance.

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The snorkel looks very good:thumb:

For the spare tyre bracket I just can't spot the area quite enough to put a wheel at the right of the chassis. From my screen it looks a tyre can't get in between the right tank and the FR wheels.

For the bracket itself which I also have in plans I got an idea. Should note I looked over 5-6 variants of them off European trucks at a junk yard (DAF, Scania, Volvo, MAN, MB) and found out all they have wheel mounting bolts arranged for European pattern. So American wheel required modification to be attached (what I saw on some Macks at shows in The Netherlands. The other day I bought a battery box bracked off late 90's Mack DM. It was attached at the right just below the cab. Consists of two steel plates of a shape of triangle with flanges bent at the bottom. Like many other chassis-mounted brackets. Seeing that part I realized I can use those two side plates. Just welding a pair of steel strips to them at the bottom, drilling 4 holes of the size American wheel has for and a spare wheel bracket is done. The last point would be a small winch to lift a wheel in place.

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MH Fred.... yes, maybe a little fine tuning down the road, maybe a new tube too as this was off an 89 and a little worn in places

Vlad... since you are on the other side of the Atlantic you will get to see far more trucks carry a spare tire (tyre) on the tractor side frame and not on the trailer, so you understand my thoughts... another spot is between the frame rails tucked up under the back of the truck but you've got to be sure the trailer legs will clear.. we did that to the Volvo F88's, but it wouldn't work with the MH short overhang... also, on my MH wheelbase I have to move the right tank forward 2-3" to fit a lo-profile 24.5 42" tire, but with an 11R I would need more room and would probably install a shorter fuel tank.

BC Mack

 

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MH Fred.... yes, maybe a little fine tuning down the road, maybe a new tube too as this was off an 89 and a little worn in places

Vlad... since you are on the other side of the Atlantic you will get to see far more trucks carry a spare tire (tyre) on the tractor side frame and not on the trailer, so you understand my thoughts... another spot is between the frame rails tucked up under the back of the truck but you've got to be sure the trailer legs will clear.. we did that to the Volvo F88's, but it wouldn't work with the MH short overhang... also, on my MH wheelbase I have to move the right tank forward 2-3" to fit a lo-profile 24.5 42" tire, but with an 11R I would need more room and would probably install a shorter fuel tank.

BC Mack

 

Sean, from what I see on the pic shortening/swapping the tank is the only way. For that reason I kept one of my R's tanks stock length while adding a quoter meter to the other when did re-skin. Will put the spare on the right rail in my case. Les safe taking it off being on a shoulder.

For the spare wheel arrangement the most trailer in the streets here are European made, rode on 6 385/65 supersingles as US folks call them. So people have a tractor spare on the tractor chassis and one or two trailer spares under the trailer's floor.

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On 15/07/2017 at 9:11 PM, BC Mack said:

Greetings fellow Lodge members, just need your opinion here.....

the air intake on my E9 gets in the way of everything, it lays on top of the 'V' from back of cab and splays out to lay on top of my radiator, PITA when trying to work...

so, my 89 MH E9-500 parts truck came with the back of the cab snorkel type air intake and the steel supports for a twin exhaust just like mine..... hmmmmm

I have been told by a reasonable source that the ram air effect from the snorkel is better than the 'slot' over the radiator.

now, this is for a restored truck, not for show, not for more power, not to look "Aussie".... but when I look through my collection of MH photos and factory brochures there are very few trucks with the snorkel... why was that???

assuming I go ahead with the mod.... the intake cyclonic or swirl inducing housing (and I know one of you will tell me the official name for it) has what looks like a decal on it, looks like a sideways letter "T", was that factory and what did it say??... also, I know it to be black, but gloss or semi-gloss??

thanks for the help

BC Mack

 

IMG_10541.JPG

IMG_1820.JPG

IMG_1812.JPG

As a fellow Canuck.....this was actually something that was also regularly installed at the dealer/branch side after delivery due to a lot of complaints with customers in MH E9 powered units that ran across the prairies in Canada. With a side wind customers felt the engine was not getting enough air into the under cab intake. Complaints were of both lack of power and black smoke. A good number of MH E9 powered units out of Toronto that hauled out west had this snorkel intake installed by the branch after delivery. It helped a bit, but not a lot. The under cab intake was thought to be too far under the cab in a side wind to suck a proper volume under load in. Doesn't mean it was the answer, but lots were installed as requested.

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I thought that a snorkel ment it was a 633 unless special order?  It does clean up the engine though. I'm going to put a snorkel on my 9670 this winter. A to clean up the engine area and B to get the air filter away from the hot engine and C just cuz I want dual air filters and like the look of 2 snorkels.  Ole Truck driver told years ago, he said  "Boy, a diesel needs 2 things to run. Fuel & air. And air is free so give it all it wants!"

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