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Old 16-07-2017   #16
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Re: Twinair coolant leak from turbo the pipe

Quote Originally Posted by liorwohl View Post
so if i get the new tank, I also have to replace the hose?



.....


No, even if the pipe of the new tank is thicker, the hose needs not to be replaced, but you can't use the original clamp.

I compared it with my new 2017 500 S, already has the new cooling liquid tank, but the same diameter hose, connects to the turbo.

Lars
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Old 24-07-2017   #17
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Re: Twinair coolant leak from turbo the pipe

Quote Originally Posted by TrevC View Post
I had this very problem when mine was about 4 years old. I examined the spigot on the tank and couldn't see anything wrong, such as a crack. The inside is reinforced with a metal tube, by the way.

I then replaced the pipe. This part includes the metal fitting at the turbo end, so it cost about 50. This made no difference. I considered replacing the tank, but then tried a smear of plumbers silicon and a second jubilee clip. No more leaks up to when I sold the car at 6 years old.

The leak on mine was very minor - it would take a few weeks and several hundred miles for the coolant level to drop appreciably. I guess the way to ensure a proper fix is to fit a new tank and pipe. Likely to cost at least 100 in parts plus coolant.

At least the tank is positioned so you can easily monitor the leak and the level. When I reported this issue on this forum a couple of years ago nobody else responded so I guess it is quite unusual.
My daughters is doing exactly the same. I only noticed it because i was checking the oil and could hear a hissing. Very slight weep, bit of steam from the top hose. Replaced the clamp with a traditional jubilee clip and thought that had solved it. Checked last week and its lost 20mm of water on the bottle in about a 6 weeks(thus why i have found the thread!!)
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Old 24-07-2017   #18
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Re: Twinair coolant leak from turbo the pipe

Yeah, worth trying the silicone and two clip solution I mentioned above - worked for me. This was the only fault with the car in 6 years of ownership.
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Old 24-07-2017   #19
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Re: Twinair coolant leak from turbo the pipe

Anyone know what year the revised tanks came in?
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Old 30-07-2017   #20
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Re: Twinair coolant leak from turbo the pipe

Found this on my daughters. Longitudinal crack (1st photo)

So i have tried smearing it with araldite rapid can just see the blob at the bottom of araldite, let it set for 12 hours. (2nd photo)

And then put some PTFE tape on, data sheets reckon the PTFE is good for 200 degrees, araldite is guarenteed for 85 degrees. (last photo).

I've used araldite on an astra gte radiator where the return hose clip was damaged so hopefully its makeup hasn't changed in 20 years!!

Discarded the jubilee clip for a standard one as well.

Lets see what happens
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Old 31-07-2017   #21
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Re: Twinair coolant leak from turbo the pipe

Interesting. When it happened to me I examined the tank spigot very carefully but couldn't see any cracks. Of course, I couldn't see underneath properly.
Now that you have identified the cause, I think you should replace the tank. The repair you've done is a good temporary fix, but if the crack propogates the spigot could snap off and you would quickly lose all coolant. Replacing the tank looks a fairly simple d.i.y job. If I had seen any faults with my tank I would have replaced it.
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Old 31-07-2017   #22
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Re: Twinair coolant leak from turbo the pipe

That's what the wife's just said.

Looks like its got no anti freeze in it anyway so must have been like this for a while and just been topped up with water.

Will source and replace. Got the last 2 weeks in August off work so should have plenty of time to sort it.
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Old 01-08-2017   #23
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Re: Twinair coolant leak from turbo the pipe

Let us know how it goes.
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Old 03-08-2017   #24
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Re: Twinair coolant leak from turbo the pipe

So far so good. Not a hiss or a fizz

Will get another bottle though because its the daughters car and if it breaks down i will be too bad to burn
Thanks TrevC thanked for this post
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Old 23-08-2017   #25
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Re: Twinair coolant leak from turbo the pipe

Well,

Cant really tell you how its going with the repair. As of 2 weeks ago the car was T-Boned by a Nissan Juke and is finished Total cost of repairs 5.5K

Decided to leave the twin air journey and have replaced it with a 1.2 S which i pick up on Saturday.

On a positive the araldite appeared to have cured the problem, I will however be giving this one the once over when I get it home.
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Old 23-08-2017   #26
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Re: Twinair coolant leak from turbo the pipe

Sorry to hear that.

Hope noone was hurt.

And thanks for the update on the repair!
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Old 24-08-2017   #27
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Re: Twinair coolant leak from turbo the pipe

Sorry to hear about the accident, hope everyone is ok. I loved my Twinair engine, but the 1.2 is smooth and economical, albeit less powerful. I gather that the plastic bit of the cooling system that fails on it is the thermostat housing, just to be different! My friends wife's 500 suffered a sudden total loss of coolant when hers broke so be watchful. It's also belt cam, unlike the chain cam TA, so be sure that the cambelt, waterpump and aux belt are replaced on or ahead of the scheduled intervals.
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Old 26-08-2017   #28
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Re: Twinair coolant leak from turbo the pipe

Thanks for the tips Trev, Daughters a little sore all down her right hand side but she'll live!!
This one deffo smoother than the twin air but definitely doesn't have the power.
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Old 02-09-2017   #29
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Update: after some weeks that the two new clamps did their job and I forgot about this, today I saw my car leaking a red puddle. Touched the pipe thing, and I can defenetly see that the tank plastic pipe is completly broken and loose.
So Im going to buy a new tank tomorrow locally for a ridiculous price.. should have bought one from ebay when I had the chance.
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Last edited by liorwohl; 02-09-2017 at 17:53.
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