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Snowtrac hood problems?

K

KRC

Member
As I am undertaking this restore project and looking at the hood design on this ST4 I can see some potential problems. First the air intake is open to the weather and the seam at the top of the hood lets water in right on top of the variator pulleys. Has anyone thought this a problem and did they do anything about it. Seems a some type of hood scoup Dragster type would solve the air intake. If the lip was over the top of the hood in the back it would help but then would cause hood removal problems. I don't know just does't seem right to do all this work and have water going inside on top of the variater. Any thoughts?
 
Sure. I put some rubber moulding on the edges. Don't know how well it will work but we'll see. As far as the vent goes, I have a scoop that will keep the rain and snow out. It is just screwed over the stock louvers.
 
do you have any pictures of your scoop? I was thinking about making a snap on cover for the seam at the top of the hood that would go right up against the cab under the window lip and then down over the hood 6 inches or so.
 
This is what I did on one of my snowtracs,but a snap on/off cover would work for the louvers that is by the windsheld.
 

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KRC said:
As I am undertaking this restore project and looking at the hood design on this ST4 I can see some potential problems. First the air intake is open to the weather and the seam at the top of the hood lets water in right on top of the variator pulleys. Has anyone thought this a problem and did they do anything about it. Seems a some type of hood scoup Dragster type would solve the air intake. If the lip was over the top of the hood in the back it would help but then would cause hood removal problems. I don't know just does't seem right to do all this work and have water going inside on top of the variater. Any thoughts?
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Just seal them off completely. The original ones were sealed of with no vents. This also promotes a cooler running VW engine.
 
did you make those scoops? I was thinking to have the opening facing the front to force air in, but then I guess snow would also go in. It is hard to see but do you have some kind of rubber gasket under the edge of your hood.
 
Yes there is a rubber seal that fits between the hood and the air intake flang of the motor,the back louvers you could just cover over.I got the scoops from jc whitney.
 
I believe that the reverse louvers are not for air intake, but act to assist with defrosting the windshield from the outside. The airflow beneath the hood goes in through the front grill, then hot air from the exhaust and engine makes it's way out through the louvers to the windshield. I could be wrong, but I already have a hard time keeping the windshield defrosted in bad weather, so I'm hesitant to block them. I have thought about building an aluminum drip pan that sits below the louvers so as to not block airflow.

My two cents.

Jon
 
I don't have the louvers under the windshield mine is an older model and didn't have them. My big concern is just were the top hood edge is. There is nothing there know to keep water from running underneath it and onto the variator pulleys.
 
here is a picture of the place were there isn't a gasket. the hood edge sits on top of this flange have you every sealed this. this is at top, right under the front windshield.
 

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If you put an adhisive strip of any type of compressable rubber seal here where your finger is pointing it pretty mch eliminates water coming in here and dripping on the variator. This does NOT rectify the problem with water and snow coming in the main air intake. Either you make some type of scoop to cut down on rain getting in, or put some type of cover over it when not in use. Otherwise the bottom of the Air Horn, the sheet metal "V Cone" that funnels the air into the fan will rot out at the bottom. I have had several new ones fabricated from scratch by HVAC shops that were adept at sheet metal fabrication. I also gave a complete set of templates and drawings to Warren for the fabrication of the "Old Style" Smaller Air Induction Horn. >
For Sealing around the hood I used some adhesive combination cork & rubber stuff that I got from Boeing surplus. For the Air Horn to the lower surface of the Hood seal I used generac car door seal. It worked well and was very close to the original stuff I found on some machines.
 
Here is my solition to keep snow and water out of the air intake louvers and variator. It is a custom fitted hood cover that I made out of coated nylon pack cloth. So far it has worked very good on the FBI Rig.
 

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Looks great! A brassiere of sorts. Why on earth the swede's didn't come up with a better design for the hood is beyond me. They exposed all of their most vulnerable engineering to the elements.
 
I agree the design left alot to be desired! Love the Bra idea! Guess the FBI rig has something else in common with J. Edgar Hoover.
 
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