adventureduo
Dave Druck [KI6LBB]
Looks like fun counter steering in the water. I love it.
Hitt Wash Crossing
- Thread starter dhackney
- Start date
p1michaud
Expedition Leader
Water crossings.
Great to know. I've had to replace my MAF due to water damage, close call...Now I have a snorkel! :snorkel:
expeditionswest said:Other than the snorkel, it is just as Mr. Toyoda designed it.
One major factor of the 3.4L for water crossings is the lack of distributor. They are coil on plug motors.
Another reason that I love my truck :jumping:
Great to know. I've had to replace my MAF due to water damage, close call...Now I have a snorkel! :snorkel:
I have no experience with water crossings in a 4x4 but I have 30 years experience in whitewater canoeing. From my canoeing experience I can imagine two rules of water crossings: Never cross perpendicular to the current if at all possible. And always cross with the front of the vehicle pointed upstream and towards the destination bank.
These two rules attempt to use the water pressure in the driver's favor rather than trying to fight it.
Do 4x4'ers use these principles?
These two rules attempt to use the water pressure in the driver's favor rather than trying to fight it.
Do 4x4'ers use these principles?
Scott Brady
Founder
Hi Kerry,
I will answer your questions over a few parts.
Actually, if the current conditions permit it, and depending on where the exit point is, a vehicle should always attempt to cross in the shortest distance possible. This is not as a performance advantage, but to limit habitat and stream/river damage. The more time a vehicle spends in the river, the more it turns up silt, etc. And a 4wd should only cross at designated fording points.
I can see why that would make sense to someone with boating experience, but in the case of a 4wd, you will want to point the front of the vehicle down stream. This does three important things: 1. The vehicle is not having to overcome the force of the oncoming water. 2. The water in not being forced into the radiator and engine compartment. 3. The water force is on the rear, which will force the front (steering) tires into the bottom, providing traction and steering control.
Hope this helps
I will answer your questions over a few parts.
kerry said:
Actually, if the current conditions permit it, and depending on where the exit point is, a vehicle should always attempt to cross in the shortest distance possible. This is not as a performance advantage, but to limit habitat and stream/river damage. The more time a vehicle spends in the river, the more it turns up silt, etc. And a 4wd should only cross at designated fording points.
kerry said:
I can see why that would make sense to someone with boating experience, but in the case of a 4wd, you will want to point the front of the vehicle down stream. This does three important things: 1. The vehicle is not having to overcome the force of the oncoming water. 2. The water in not being forced into the radiator and engine compartment. 3. The water force is on the rear, which will force the front (steering) tires into the bottom, providing traction and steering control.
Hope this helps
lowenbrau
Explorer
If I might add...
The greatest risk in crossing rivers is spinning the tires. With the powerful water pressure one revolution of a spinning tire can result in a very deep hole under that tire. This can change the whole dynamics of the crossing and have very undesirable consequences. If it happens to be a down stream tire that drops you can suddenly have a lot of water pressure on the floorpan and increase your possibility of a rollover which is really about the worst thing that can happen. It's never best to cross upstream but rather to let the water help push you along to the other bank.
The greatest risk in crossing rivers is spinning the tires. With the powerful water pressure one revolution of a spinning tire can result in a very deep hole under that tire. This can change the whole dynamics of the crossing and have very undesirable consequences. If it happens to be a down stream tire that drops you can suddenly have a lot of water pressure on the floorpan and increase your possibility of a rollover which is really about the worst thing that can happen. It's never best to cross upstream but rather to let the water help push you along to the other bank.
Arivalsend
Adventurer
Looks as though the Fuso is holdin up well
Doug, your blog posts and the different accounts of your adventures and mishaps are always a treat to read! You have a flair for recreation and I enjoy the heck out of it up here in the cold north. It looks like you guys are taking the time to really put the Fuso through her paces and staying dry for the moment. Clips like that makes me want go out a buy a snorkel:jumping:
Its also good to see Scotts rig in action. Did you have to seal any of the stock parts, ECU or MAF sensors, Scott or do they hold up well without? Cheers guys and keep the adventures coming still three more months till spring up here!
Doug, your blog posts and the different accounts of your adventures and mishaps are always a treat to read! You have a flair for recreation and I enjoy the heck out of it up here in the cold north. It looks like you guys are taking the time to really put the Fuso through her paces and staying dry for the moment. Clips like that makes me want go out a buy a snorkel:jumping:
Its also good to see Scotts rig in action. Did you have to seal any of the stock parts, ECU or MAF sensors, Scott or do they hold up well without? Cheers guys and keep the adventures coming still three more months till spring up here!