SE Lower radiator hose replacement

Engines, Transmissions & Final Drive questions and answers

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wasp47
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Vehicle: NB SE

SE Lower radiator hose replacement

Postby wasp47 » Mon May 21, 2018 12:31 pm

Hi,
Can anyone help this old fart out. I need to replace the lower hose on my SE, the engine end is up behind the air con pump. Is there a trick to it as no way can I get my hand in there.
Cheers
Steve :roll: :roll:

Nevyn72
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Re: SE Lower radiator hose replacement

Postby Nevyn72 » Mon May 21, 2018 1:12 pm

After wasting nearly 5 hours doing this job myself I'll give you the suggestion I was supplied with WAY to late..... :|

Unbolt the Air-conditioning compressor from it's mount and let it hang from it's hoses + some wire.

Note: the engine end fitting on the SE is angled slightly differently to other NB engines.
I read that this required a different lower hose but the generic Silicone hose I used worked fine without trimming.
"A Convertible has a top you can put down when the weather's nice...... A Roadster has a top you can put up when the weather's bad."

wasp47
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Re: SE Lower radiator hose replacement

Postby wasp47 » Mon May 21, 2018 2:15 pm

Thank you :D :D

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Lokiel
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Re: SE Lower radiator hose replacement

Postby Lokiel » Mon May 21, 2018 2:53 pm

Nevyn72 wrote:After wasting nearly 5 hours doing this job myself I'll give you the suggestion I was supplied with WAY to late..... :|

Unbolt the Air-conditioning compressor from it's mount and let it hang from it's hoses + some wire.
:

I'm betting that even IF you knew this first, you'd have spent at least an hour TRYING to get the hose off first without unbolting anything - it's the sort of thing that looks possible to do but turns out to be a major pain in the arse and takes you MUCH longer to do without removing surrounding components (been there, done that too).

This should have been a cynch for you thoug Nevyn72h, didn't you manage to install your aftermarket intercooler without WITHOUT removing the front bumper?

If you can do that, you can do anything!
(might take 4 times as long though)
Don't worry about dying, worry about not living!
Garage Thread: http://www.mx5cartalk.com/forum/viewtopic.php?f=57&t=76716

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greenMachine
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Change the mixer while you are in there!

Postby greenMachine » Mon May 21, 2018 3:01 pm

There is a replacement mixer available which rotates the inlet 180*, not sure it is plug'n'play though. It does create much more space down there though.

I'll be in there shortly working on my oil cooler installation, I might see if I can find one as the radiator has to come out. I have some ideas for that area ...

:mrgreen:
I never met a horsepower I didn't like (thanks bwob)

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NB SE - gone to the dark side (and loving it 8) )

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Lokiel
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Re: SE Lower radiator hose replacement

Postby Lokiel » Mon May 21, 2018 4:43 pm

The MSM/SE mixing manifold is different to the regular NB's, the rear-facing outlet bends differently.

When I get around to installing the TSE manifold, I plan on cutting that section, rotating the barb further clockwise and getting it re-welded so that the hose can run diagonally down behind the A/C compressor and straight to the lower radiator barb.

Not sure why this wasn't the original routing since it's much more direct than the current routing (I suspect that the convoluted OEM routing was to work around the driveshaft on LHD cars and they simply used the same hoses and barb for RHD cars).
Don't worry about dying, worry about not living!
Garage Thread: http://www.mx5cartalk.com/forum/viewtopic.php?f=57&t=76716

wasp47
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Posts: 272
Joined: Tue Jan 03, 2017 2:53 pm
Vehicle: NB SE

Re: SE Lower radiator hose replacement

Postby wasp47 » Mon May 21, 2018 7:59 pm

Thanks for the advice, I ordered a pair of silicone jobbies from Mania
Cheers
Steven


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