Watercooling hoses through longs?, I need feedback from those who've done it. Options

[pktzygt]

I'm finalizing my Suby conversion and I can seem to make myself put the cooling lines under the car.

I can think of one person (Britain) who has put the cooling hoses in the longs, but I was hoping to get some feedback on the difficulty of installation and how well it works form some suby or V8 guys. Part of the problem is that I haven't ever cut into the longs myself.

One one hand I don't want to put extra heat in the cabin or lose foot space but on the other, I hate the shortcut look of the under car routing.

Do the bends in the hose cause cooling issues?

Can the hoses go into the longs without taking foot space?

Should I put them under the car and re-route them as a future winter project?

Thanks!

[DBCooper]

You can also search for Rod Simpson V8 conversions. For decades they all used hard plumbing through the longs, dozens done, and worked well.

[pktzygt]

You can also search for Rod Simpson V8 conversions. For decades they all used hard plumbing through the longs, dozens done, and worked well.

I looked at those, I've had enough engineering classes in thermodynamics to at least be cautious of the 90 degree bends. I'm going to go out to the garage and take another look at where he put those hoses through.

Maybe it can be done with some gentler bends behind My AP speaker pods.

[Katmanken]

I looked at those, I've had enough engineering classes in thermodynamics to at least be cautious of the 90 degree bends. I'm going to go out to the garage and take another look at where he put those hoses through.

Maybe it can be done with some gentler bends behind My AP speaker pods.

(IMG:style_emoticons/default/blink.gif)

Seriously, a couple of things to consider. Aluminum is one of the better conductors of heat which is why it's used for oil coolers, heat sinks and the like. Rubber on the other hand doesn't conduct heat nearly as well. I'd stick to the rubber unless you really like heat.

Can you explain the 90 degree bend heat change?

[pktzygt]

I looked at those, I've had enough engineering classes in thermodynamics to at least be cautious of the 90 degree bends. I'm going to go out to the garage and take another look at where he put those hoses through.

Maybe it can be done with some gentler bends behind My AP speaker pods.

(IMG:style_emoticons/default/blink.gif)

Seriously, a couple of things to consider. Aluminum is one of the better conductors of heat which is why it's used for oil coolers, heat sinks and the like. Rubber on the other hand doesn't conduct heat nearly as well. I'd stick to the rubber unless you really like heat.

Can you explain the 90 degree bend heat change?

90 degree bend heat change......blah blah......laminar flow.....blah blah.....turbulent flow.... blah blah..... not exactly a quick explanation, but what I meant to say is that the thermodynamics classes I have taken include a professor rattling on about fluid flow and how the turbulence created through a 90 degree bend reduces flow. Fluid flow is what I getting at, not heat transfer. But yes, it can make a difference in heat transfer too.

Sorry about the confusion, my mind was elsewhere as I was typing that earlier (2 kids).

[DBCooper]

But yes, it can make a difference

How much difference? Enough to go through all the convolutions you're seeing that alternate routing will require? Isn't it a question of trade-offs? So how much difference will those 90 degree turns make, really? The reason i ask is that it works on a lot of cars that are actually driving around out there.

My hoses go underneath and my car is way way too low. I've hit them a number of times and no problem so far, but I have peeled the hose clamps back on the hose, so I wasn't far from screwing things up. I don't have shift linkage in the tunnel any more so am thinking that's probably the best option for my car, but can't have the heat in the cockpit problem. I drive the car a lot and it can't be hot. I guess A/C would fix that, so maybe that priority just got higher, but it just seems too posh.

[pktzygt]

But yes, it can make a difference

How much difference? Enough to go through all the convolutions you're seeing that alternate routing will require? Isn't it a question of trade-offs? So how much difference will those 90 degree turns make, really? The reason i ask is that it works on a lot of cars that are actually driving around out there.

My hoses go underneath and my car is way way too low. I've hit them a number of times and no problem so far, but I have peeled the hose clamps back on the hose, so I wasn't far from screwing things up. I don't have shift linkage in the tunnel any more so am thinking that's probably the best option for my car, but can't have the heat in the cockpit problem. I drive the car a lot and it can't be hot. I guess A/C would fix that, so maybe that priority just got higher, but it just seems too posh.

Well, it's been done so I'm sure it can work. I'd put money on it not working as well than if the bend was reduced. I personally still like the idea of some kind of hose or pipe running down the tunnel with some pipe insulation on it.... think roll cage padding.

For now I'll take the quick and easy route and re-evaluate later. Maybe I'll bump the thread when I try something new.

On a side note, I bought the A/C system from renegade. It is a fairly quick and easy route for sure, but I expect it to work well. I'm not pulling out the factory venting because eventually I will put a heater core in the vent box and some sort of A/C system that won't like it should be under the dash of a Jeep CJ.