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1.9L Coolant Hose size - back of head to heater core
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lcolon
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PostPosted: Wed May 05, 2021 6:34 pm    Post subject: 1.9L Coolant Hose size - back of head to heater core Reply with quote

Sigh - yet again I have to address coolant leaks on my vanagon. The hose coming out of the right hand side of the head on my 1.9L that goes to the T for the rear heater and onto the front heater core - is that all 5/8 inch hose? The hose at the outlet to the head seems bigger than that (maybe because it is swollen and ready to burst).

A previous owner put one of those flush Ts in the line that continues to leak from the cap. I am going to get rid of that unless it really is of use.

I guess I have to go buy more G11 $$. I hope not too much comes out of the motor. Given that flush T is there I will try to save as much as I can.

One more thing - I *think* the left head is just starting to seep some coolant. Very slight (gets wet once system is pressurized cold but only after 15-20min). Should I add some of that subaru coolant conditioner when I recharge the system?
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skills@eurocarsplus
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PostPosted: Wed May 05, 2021 6:43 pm    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

if it's the hose i'm thinking of no, it's like 1" to the head and tapers down to 5/8. vw is famous for their stupid stepped hoses.

the cross over pipe on top of the engine (steel) is about 1" and tapers down to 5/8 to go to the heater system. that is standard issue 5/8 hose found at any parts store.
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lcolon
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PostPosted: Wed May 05, 2021 6:58 pm    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

skills@eurocarsplus wrote:
if it's the hose i'm thinking of no, it's like 1" to the head and tapers down to 5/8. vw is famous for their stupid stepped hoses.

the cross over pipe on top of the engine (steel) is about 1" and tapers down to 5/8 to go to the heater system. that is standard issue 5/8 hose found at any parts store.


Thank you for the quick reply. That is what I thought - it looks bigger at the head end. I will call my local vanagon shop and see about getting the proper hose. Frustrating that this is not an off the shelf item...

It is the one on the back of the head outlet (flywheel side) not the crossover pipe.
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PostPosted: Wed May 05, 2021 8:04 pm    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

lcolon wrote:
skills@eurocarsplus wrote:
if it's the hose i'm thinking of no, it's like 1" to the head and tapers down to 5/8. vw is famous for their stupid stepped hoses.

the cross over pipe on top of the engine (steel) is about 1" and tapers down to 5/8 to go to the heater system. that is standard issue 5/8 hose found at any parts store.


Thank you for the quick reply. That is what I thought - it looks bigger at the head end. I will call my local vanagon shop and see about getting the proper hose. Frustrating that this is not an off the shelf item...

It is the one on the back of the head outlet (flywheel side) not the crossover pipe.
. I bought that very hose from Van Cafe a few months ago. They only had it in the Silicone Version, not the stock rubber version- here ya go. Not cheap, but it fits really well.

https://www.vancafe.com/251265056SIL-p/251265056sil.htm
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lcolon
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PostPosted: Thu May 06, 2021 12:02 pm    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

jlrftype7 wrote:
I bought that very hose from Van Cafe a few months ago. They only had it in the Silicone Version, not the stock rubber version- here ya go. Not cheap, but it fits really well.

https://www.vancafe.com/251265056SIL-p/251265056sil.htm


I called my local shop BusLab and they have the "long" version of the rubber hose in-stock. It goes from the head all the way to the front heater core. I am going to get that version and cut it short for my needs.

Still not cheap but it will work...
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PostPosted: Thu May 06, 2021 12:10 pm    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

lcolon wrote:
jlrftype7 wrote:
I bought that very hose from Van Cafe a few months ago. They only had it in the Silicone Version, not the stock rubber version- here ya go. Not cheap, but it fits really well.

https://www.vancafe.com/251265056SIL-p/251265056sil.htm


I called my local shop BusLab and they have the "long" version of the rubber hose in-stock. It goes from the head all the way to the front heater core. I am going to get that version and cut it short for my needs.
'
Still not cheap but it will work...
' Long' , meaning no rear heater core tee to connect to since you've bypassing it? Interesting. The Van Cafe hose connects to plastic or metal tee for Rear Heater Core hose connection, so it is pretty short. I used the Metal Tee fittings when replacing my heater hoses back in 2018. The feed hose off the head was still in decent shape back then, so I left it alone until a few months ago.
Was surprised that no corrosion was on the cyl. head nipple when I removed that old hose. Fitting was clean.... Shocked Shocked
I had expected pitting or other such issue.... Razz
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lcolon
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PostPosted: Thu May 06, 2021 3:12 pm    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

I am actually going to cut the hose so that it fits into the rear heater core T as I still have that on the van. The hose is setup, however, that if you do not have that T it will go all the way to the front in one continuous length. It is made of rubber and not silicone.
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PostPosted: Thu May 06, 2021 4:16 pm    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

Those heater Tees are often plastic.

You might consider replacing it with a good brass Tee.

Dave
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PostPosted: Thu May 06, 2021 4:21 pm    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

djkeev wrote:
Those heater Tees are often plastic.

You might consider replacing it with a good brass Tee.

Dave
. I used these...

https://www.vancafe.com/5-8-x-5-8-x-1-2-Tee-p/84543.htm
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lcolon
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PostPosted: Thu May 06, 2021 4:23 pm    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

See attached photos of the hose - it is about 12 feet long in total length...


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PostPosted: Thu May 06, 2021 4:24 pm    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

djkeev wrote:
Those heater Tees are often plastic.

You might consider replacing it with a good brass Tee.

Dave


Good point I will check. I think the one already there is metal but I will verify.
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PostPosted: Fri May 07, 2021 7:25 am    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

This is what I used.

https://www.napaonline.com/en/p/NBG10965?impressionRank=2&keywordInput=10965

Found it in this thread. Works fine.

https://www.thesamba.com/vw/forum/viewtopic.php?t=152746
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PostPosted: Fri May 07, 2021 7:34 am    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

https://www.vancafe.com/251265056SIL-p/251265056sil.htm

Is this the hose you need?
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PostPosted: Fri May 07, 2021 10:01 am    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

shagginwagon83 wrote:
https://www.vancafe.com/251265056SIL-p/251265056sil.htm

Is this the hose you need?
Razz Razz I posted that hose as an option earlier in the thread. OP went with long Buslab version. I think they're close to the OP, so buying local worked versus ordering in....
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PostPosted: Fri May 07, 2021 10:09 am    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

lcolon wrote:

One more thing - I *think* the left head is just starting to seep some coolant. Very slight (gets wet once system is pressurized cold but only after 15-20min). Should I add some of that subaru coolant conditioner when I recharge the system?


That is what I would do, it may well buy you years of time. I bought a case of the Subaru stuff on Ebay or Amazon cheap.
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PostPosted: Fri May 07, 2021 11:24 am    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

If I bought a full length hose, I’d use it. Cut it for the T, but use the full run. The heater hoses fair pretty well, but you’ve bought the full length. Be a shame to just discard it.
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PostPosted: Fri May 07, 2021 12:26 pm    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

MarkWard wrote:
If I bought a full length hose, I’d use it. Cut it for the T, but use the full run. The heater hoses fair pretty well, but you’ve bought the full length. Be a shame to just discard it.


Thank you for the suggestion. The hose from the Tee to the front has been replaced recently. I am going to save the other portion of the long run for the future.
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PostPosted: Fri May 07, 2021 1:28 pm    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

jlrftype7 wrote:
shagginwagon83 wrote:
https://www.vancafe.com/251265056SIL-p/251265056sil.htm

Is this the hose you need?
Razz Razz I posted that hose as an option earlier in the thread. OP went with long Buslab version. I think they're close to the OP, so buying local worked versus ordering in....


Didn't see that. This is the hose that caused my only breakdown with my 1.9L.

I just took my 1.9L out and swapping to an EJ22. I feel it would be good karma to pass this hose along. It is the silicone van cafe version. First person to PM me with their address gets it.
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PostPosted: Fri May 07, 2021 6:35 pm    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

i use this one, from the back of the head, cylinder #1, into the heater lines, https://www.amazon.com/gp/product/B000C2WB4O/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
if there's no heater, i use a brass barbed connector and carry on to the front heater with regular 5/8'' heater hose.
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PostPosted: Fri May 07, 2021 8:20 pm    Post subject: Re: 1.9L Coolant Hose size - back of head to heater core Reply with quote

markswagen wrote:
i use this one, from the back of the head, cylinder #1, into the heater lines, https://www.amazon.com/gp/product/B000C2WB4O/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
if there's no heater, i use a brass barbed connector and carry on to the front heater with regular 5/8'' heater hose.
How did you chance upon this hose. Seems so random ..... Razz Razz Great to know it exists and is affordable too.... Cool
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