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Post by Zed on Apr 8, 2017 8:59:26 GMT
Wot 'e said. ^
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Post by chad on Apr 8, 2017 9:06:52 GMT
Sorry to be thick but won't the cooling pipes carry very hot water if they're connected to the rad?
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Post by pkrboo on Apr 8, 2017 11:40:26 GMT
Yes they will carry hot coolant. Plastic pipe is inert and won't cause any sort of reaction with the rest of the engine and system. www.rjes.com/html/material_choice.htmlT25 cooling pipes were made of plastic.
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Post by chad on Apr 8, 2017 12:00:03 GMT
OK - I see. It was the mention of cold water pipes that threw me, I assumed that they would not necessarily be robust enough at the temperatures the cooling water reaches.
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Post by Zed on Apr 8, 2017 13:11:51 GMT
Yes they will carry hot coolant. Plastic pipe is inert and won't cause any sort of reaction with the rest of the engine and system. www.rjes.com/html/material_choice.htmlT25 cooling pipes were made of plastic. I haven't checked your link but plastics vary considerably and one designed for cold use could go really floppy at boiling water temps.
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Post by pkrboo on Apr 8, 2017 16:03:22 GMT
Yes they will carry hot coolant. Plastic pipe is inert and won't cause any sort of reaction with the rest of the engine and system. www.rjes.com/html/material_choice.htmlT25 cooling pipes were made of plastic. I haven't checked your link but plastics vary considerably and one designed for cold use could go really floppy at boiling water temps. That's kind of the question i guess, yes they are called cold water feed pipes as they are used to pipe cold water into a house, but are they specced higher? considering they go underground, in concrete etc.
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Post by chad on Apr 8, 2017 16:17:37 GMT
Looking up MDPE it has a softening point, VICAT, of 99-124 degrees C. en.wikipedia.org/wiki/Medium-density_polyethyleneLooking at the spec of a Subaru Thermostat: "Once the temperature of the coolant rises to between 180 and 195 F (82 - 91 C), the thermostat starts to open, allowing fluid to flow through the radiator. By the time the coolant reaches 200 to 218 F (93 - 103 C), the thermostat is open all the way." I really wouldn't want to use this.
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Post by gooner on Apr 8, 2017 23:32:18 GMT
Matt why not just get silicon pipe it's not that expensive. I also have sections of stainless pipe too.
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Post by pkrboo on Jul 24, 2017 10:43:48 GMT
I have progressed this a fair bit but updating in TLB and forgotten I had this thread. Some highlights: Engine is done and in, wiring loom done(sent it away, bestΒ£200 spent!!) Gearbox done and in. Intake sorted, exhaust in progress (homemade crappy looking affair but cheap and should work ok) Chopped up some plastic T25 pipes to use for the coolant and the built in bends etc work quite well. (Total cost=free) apart from cost if silicon connecting hoses and clips. Just hydraulic clutch and gear linkage to sort and it'll be back on the road.
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Post by rickyrooo1 on Jul 24, 2017 10:55:43 GMT
Have you actually run it yet?
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Post by pkrboo on Jul 25, 2017 9:34:06 GMT
Have you actually run it yet? Yep it runs. Just need to sort the coolant bottle plumbing out then I can fill it and see if it cools properly!!
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Post by Zed on Jul 25, 2017 9:51:16 GMT
Exciting times! Scruffy engine looks at home in your filthy engine bay. π
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Post by pkrboo on Jul 25, 2017 9:58:57 GMT
Exciting times! Scruffy engine looks at home in your filthy engine bay. π Zero fucks about that!! Lol just want it to work, cleaning and what not can be done as and when
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Post by Zed on Jul 25, 2017 10:04:06 GMT
Exciting times! Scruffy engine looks at home in your filthy engine bay. π Zero fucks about that!! Lol just want it to work, cleaning and what not can be done as and when I'm sure you're expecting to shut lid and drive with your modernish engine, rarely looking in there let alone mechanicing. But I will say that when I have to fiddle with mine it's a joy to get my arms back out and find they're still clean.
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Post by pkrboo on Jul 25, 2017 11:05:42 GMT
Zero fucks about that!! Lol just want it to work, cleaning and what not can be done as and when I'm sure you're expecting to shut lid and drive with your modernish engine, rarely looking in there let alone mechanicing. But I will say that when I have to fiddle with mine it's a joy to get my arms back out and find they're still clean. True, I will give it a wipe over but I'm not going the hole hog of powder coating etc. A few bits might get a coat of paint and I'll clean the engine bay as people will want to look in it no doubt.
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