Initially I liked you idea for using silicone for coolant hoses. I though it would be a good method for making a custom lower radiator hose for my Jeep QSB3.3 project. I decided to do some research. After extensive searching and reading, I found this video.The upper coolant connection was straight forward thanks to the modifications to the radiator's inlet port, just a simple 45-degree 1.75" layered silicone hose with stainless t-bolt clamps that I'm using throughout:
The engine's new coolant inlet connection uses a short 2" diameter hose, then the new elbow, & down to the radiator with a 90-degree elbow hose:
Woah! Well crap. I thought it was just ever so slightly more permeable, not comically more permeable! Hmm... that'll need a rethink for the long term for sure.Initially I liked you idea for using silicone for coolant hoses. I though it would be a good method for making a custom lower radiator hose for my Jeep QSB3.3 project. I decided to do some research. After extensive searching and reading, I found this video.
It appears the permeation rate of water through silicone is 10x greater than it is for EDPM. I will attempt to contact some coolant hose companies (Gates, Dayco, Continental) to learn if they sell universal EDPM ELLs.
i`ve been using silicone heater hose and silicone radiator hose for over 20 years and NEVER had ANY moisture on any of them. I have been getting them from siliconeintakes and they say their stuff is antifreeze rated. My local hose man sells silicone heater hose and radiator size silicone straight and Ells. the best thing I like about the silicone hoses is that they do not get hard and crack after a couple years. I`ve had some hoses on my vehicles for 15 years and they are still soft, supple, and DO NOT LEAK or weep. just my 2 cents worth.Woah! Well crap. I thought it was just ever so slightly more permeable, not comically more permeable! Hmm... that'll need a rethink for the long term for sure.
Oh don't get me wrong... I appreciate their parts as well, especially for many import brands where they've taken over for the OEM replacement parts. No joke I just ran into an example of their parts being better this last Saturday: In this case it was a chinesium timing belt that refused to line up properly (that apparently cost this friend well over an hour of fighting it) on a Subaru, but then the Gates belt came to the rescue & lined right up in 5 minutes. I have no issues with the actual hard parts, just wary about marketing suits that have a habit of fouling up perfectly good products (from any brand!), but then I'm sure I'm not telling you anything new there haha! I'll have to get a hold of them for that cheat sheet, sounds useful.I understand lots of folks successfully use silicone hoses for coolant. Gates is a reputable company and sells silicone hoses for CAC applications. I trust their testing. I have been using their products for many, many years (I'm 58). I spoke to Gates technical support last week. The technician emailed a spreadsheet (he called it a cheat sheet) to me for 90 degree Gates EDPM coolant hoses. Most of the hoses are already used in automotive applications and may have to be cut to fit for our purposes, but they are readily available from auto parts stores in the event of failure.
I think "liked" isn't a strong enough word... I've been showing it to friends like it was a picture of a 12-point I bagged or something haha!Glad you liked the Rummins badge. I made the bronze ones as well, but my bandsaw blade took a dump and wouldn't cut thre bronze. As soon as i get that one finished, I'll shoot it your way. This whole Land Rummins project reminds me of the scene from Jurassic Park where Dr. Malcolm is chiding Mr. Hammond saying, "your scientists were so preoccupied with whether or not they could, they didn't stop to think if they should". Haha, weeeelllll, i feel like Hammond with his park off the coast of Costa Rica. I'm $24k into this build, so I'm perty sure I'm past the point of no return..."Spare no expense".
Anywho, it's been awesome to follow your build, taking tips and tech-cedures (techniques and procedures) since were kinda breaking new ground here in CONUS on the Land Rummins concept. I hear that it's a common thing in the U.K.
I'll be fitting the NV4500 to the 4bt this week and hopefully sliding her in for engine mount dimensions.
That's good to hear, because even though I'd heard they were tough, at first I was a little surprised by how much smaller the LC box appeared to be. (Could just be the difference in outside/inside frame rail designs) When I take it off again for paint I'll have to set it side by side my old OE Rover unit, just for a funny comparison. I'm happy to see how much aftermarket & DIY mods & just general free information there is out there for them too!Awesome man. The LC steering box is beefcake, you won't regret it.