Silicon coolant hoses

[backcountry]

I understand Rotax now uses silicon hose’s on their IS engines. I’d like to replace the coolant hoses on my 912S UL engine. Looking for the best silicone hose pproducts and clamps for this project.

 

[seagull]

I did a complete write up in this thread, this is the meat of it;

5 year rubber alternatives

My 5 year is coming up. I already have teflon fuel and oil hoses. The things I see on the list that I will need are; 267-789, carb rubber flange, I see one from JBM that is cheaper, any reviews? 861-116, carb diaphragm, do these go bad? 922-250, coolant hose 17mm, where is the cheapest place...

vansairforce.net

 

[12vaitor]

I get my silicon hoses from Pegasus Racing and use Oetiker pinch clamps (one time use).

Silicone Hoses by Inside Diameter | PegasusAutoRacing.com

If you are looking for a specific size of silicone hose, allow us to sort our inventory by inside diameter to help you easily find what you need. Check out our variety!

www.pegasusautoracing.com

 

[backcountry]

I understand Rotax now uses silicon hose’s on their IS engines. I’d like to replace the coolant hoses on my 912S UL engine. Looking for the best silicone hose pproducts and clamps for this project.

Thanks for the feedback. That helps

 

[backcountry]

I noticed that clear silicone hoses are available. Would there been anything wrong with that?
You would be able to confirm and see that the liquid coolant was there.

 

[backcountry]

I did a complete write up in this thread, this is the meat of it;

5 year rubber alternatives

My 5 year is coming up. I already have teflon fuel and oil hoses. The things I see on the list that I will need are; 267-789, carb rubber flange, I see one from JBM that is cheaper, any reviews? 861-116, carb diaphragm, do these go bad? 922-250, coolant hose 17mm, where is the cheapest place...

vansairforce.net

 

[backcountry]

I understand Rotax now uses silicon hose’s on their IS engines. I’d like to replace the coolant hoses on my 912S UL engine. Looking for the best silicone hose pproducts and clamps for this project.

I get my silicon hoses from Pegasus Racing and use Oetiker pinch clamps (one time use).

Silicone Hoses by Inside Diameter | PegasusAutoRacing.com

If you are looking for a specific size of silicone hose, allow us to sort our inventory by inside diameter to help you easily find what you need. Check out our variety!

www.pegasusautoracing.com

View attachment 96698

Seagull, I ordered the hoses in blue color that you referred to. The pictured here shows a red hose in the middle of a red hose.
Question: due you know what the material of the red hose is.
Thanks for your help.

 

[12vaitor]

Seagull, I ordered the hoses in blue color that you referred to. The pictured here shows a red hose in the middle of a red hose.
Question: due you know what the material of the red hose is.
Thanks for your help.

The red part is silicone.

 

[bobnoffs]

I noticed that clear silicone hoses are available. Would there been anything wrong with that?
You would be able to confirm and see that the liquid coolant was there.

there is reinforced clear silicone that was rated for my use. it makes it easy to see bubbles.

 

[Piper J3]

there is reinforced clear silicone that was rated for my use. it makes it easy to see bubbles.

You don't have clear oil hoses so you can see the oil....

 

[bobnoffs]

You don't have clear oil hoses so you can see the oil....

but i did have a coolant issue that was trapping air and causing temp problems. i redesigned the overflow system [zero pressure system] with a manifold in the line at the highest point with a schrader valve in it so i can bleed air. clear hose was helpful.
speaking of seeing the liquids.........in my fuel tank i designed and built i have a 3/4''bung in the top of the rear side of the tank with a clear ''fisheye'' screwed in to the bung. it is visible thru the rear window when i fuel and i can see the fuel in the glass sight when it gets full. always full, never an overflow.