Cooling Line Recommendations

[smokeysevin]

I am running 3/8" OD SS thru hull lines in my js 750 swap but I need to be able to connect that to the pump/motor, is there a specific hose type y'all recommend for the soft cooling lines? I have used Venair reinforced silicone lines on my truck and runabouts but nothing smaller than 1/2"

Found this thread a few minutes after posting (https://www.x-h2o.com/threads/cooling-line-material-and-clamps.198298/#post-2050001) but nothing specific other than the fuel hose.

What is typical cooling system pressure?

Sean

 

[G-Body]

Gates makes 3/8" heater hose. Thats what I prefer to use

 

[fx1mark]

you can use 3/8" air hose or if you want to be fancy you can use this.

3/8

The original Fast Flow Fuel/Cooling Line. Suitable for jet-skis, snowmobiles, go-karts, ATVs, motorcycles, and other motor sports applications that require a 3/8" line. Available in Clear, Neon Green, Neon Yellow, Neon Orange, Blue, and Red. All colors are translucent. 3/8" inside diameter, 5/8"...

fuel-line.com

 

[Carrera911]

Air hose of your choice works great. Check out HD, Lowe’s, HF, Amazon for a wide variety of just about every color. I’d stay away from the super cheap PVC stuff. I run the translucent blue air line with webbing inside from McMaster. Roughy $2 a foot. I liked the look and threw it in a big order of stainless hardware.


Sent from my iPhone using Tapatalk

 

[smokeysevin]

you can use 3/8" air hose or if you want to be fancy you can use this.

3/8

The original Fast Flow Fuel/Cooling Line. Suitable for jet-skis, snowmobiles, go-karts, ATVs, motorcycles, and other motor sports applications that require a 3/8" line. Available in Clear, Neon Green, Neon Yellow, Neon Orange, Blue, and Red. All colors are translucent. 3/8" inside diameter, 5/8"...

fuel-line.com

I thought I remembered seeing that but since I didn't know what pressure it was rated for, I wasn't sure about it.

Sean

 

[smokeysevin]

Air hose of your choice works great. Check out HD, Lowe’s, HF, Amazon for a wide variety of just about every color. I’d stay away from the super cheap PVC stuff. I run the translucent blue air line with webbing inside from McMaster. Roughy $2 a foot. I liked the look and threw it in a big order of stainless hardware.


Sent from my iPhone using Tapatalk

I have had issues on runabouts with the clear braided stuff getting hot and melting/deforming under the hose clamps. Do you know offhand what the part number for the lines you ordered were? It has held up okay so far?

Sean

 

[Carrera911]

No issues at all. You almost don't need hose clamps on the barbed fittings, it's a MF to get off and have to work a pick under it. It has held up better than I expected to temp and abrasion. The thru hull to manifold line rubs on the B pipe head pipe, no rub marks only a little yellowing from the heat down by the starter area. Also rubs on the stinger, only slight wear since I put textured powder coat on the stinger. Going on 3 seasons with the same line.

5545K18 is the part number

 

[fx1mark]

I thought I remembered seeing that but since I didn't know what pressure it was rated for, I wasn't sure about it.

Sean

I've been running the blue line for about a year now with no issues.

 

[jeepcreepcj]

I’ve been running the fast flow line for coolant lines for a few years and it has held up great and is easy to work with. It doesn’t kink, or melt easily, and holds up well against abrasion.

 

[sturat]

3/8 air compressor hose from northern tool / harbor freight is the best bang for the buck. $17 for a 25ft roll or something like that. You dont need anything fancy. Fancy stuff is $3-$4 per foot.

 

[SteveC]

https://www.mcmaster.com/54075K443/ is like $0.75/ft, but shipping adds, of course.