Who makes the best coolant/oil hoses?
Discussion
kknowswhere too, whichc may be dodgy.If you use silicone hose for oil make sure it's the oil/petrol resistant fluorosilicone not normal silicone. Silicone will resist high temperatures better than rubber but it's still a good idea to slip an insulating sleeve over it to keep the heat away. Plenty of places will sell insulated sleeving made from fibreglass cloth with a reflective metal surface.
Mark300zx said:
The internal diameters I am after are between 6-8mm for oil and coolant, they also run very close to exhaust and turbo so must be able to withstand a fair amount of radiated heat!
That does change matters slightly.What exactly are these pipes doing ? They seem very small.
I can only assume one is an oil supply to the turbos, in which case obviously it needs to be suitable for high pressure oil also.
The norm is a steel braided type hose.
You're best to route pipes away from heat as much as possible, or introduce heat shielding of some sort.
Mark300zx said:
Apologies the hoses will not be carrying oil, only coolant and actuator feeds!
Very small pipes for coolant.Normal silicon style hoses will be fine for coolant, if designed for that purpose. Or you could spend a little extra and opt for fuel or oil rated hose which would be tougher stuff.
As for the actuator, I see no real reason not to just use small diam fuel line or similar.
The think silcon style hose in small diameter many people use for boost/vac, is pure dung, and splits very easily.
I'd never use it anywhere important. In fact, I wouldnt even use it somewhere unimportant.
Mark300zx said:
So I presume high pressure fuel line would be optimal for coolant feeds, would this be able to handle the heat?
BTW they are coolant hoses for a turbo.
Just exactly how hot do you intend to get them ??BTW they are coolant hoses for a turbo.
IMO there are very few hoses available that will withstand a lot of radiated heat. Whether braided or conventional.
It would be a very bad setup though where hoses are routed so close, they would be in a dangerous position. Ive always been able to get enough distance for them to be safe. It doesnt take much really.
If it wil be that bad, have your manifold insulated as well.
The turbo/manifold causes the problem, the manifold does not lend itself to wrapping and the only option would be some sort of thermal coating.
The setup is stock and replacing pipe in the stock location, just trying to minimise the risk of replacing the hose in the future when the engine is back in.
The setup is stock and replacing pipe in the stock location, just trying to minimise the risk of replacing the hose in the future when the engine is back in.
Let's see whether this is applicable. I heard of the use of metal pipe can perform this function in case the original rubber pipe is too short after several cut offs. The standard rubber pipes are still used to connect the metal pipe into the hose on engine and radiator. At least there is less contact between the hot water and rubber pipes...
Gassing Station | Engines & Drivetrain | Top of Page | What's New | My Stuff