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Custom Pre-Heater hoses?
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wccdavehamby
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PostPosted: Tue Dec 10, 2019 9:54 am    Post subject: Custom Pre-Heater hoses? Reply with quote

So, after 3 decades of dealing with crappy foil hoses and spending a fortune on single use only products, I am at my wits end. Has anyone come up with a full proof option for the pre-heat hoses from the fan shroud to the heater boxes? I am looking for something that can be used over and over without having to treat it like a delicate flower and something that is one piece. Let the responses commence.

thank you,
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PostPosted: Tue Dec 10, 2019 10:18 am    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

Get original style German hose like this
https://www.mtmfg.com/part/view/oem-german-heater-...129-087AGR
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Xevin Premium Member
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PostPosted: Tue Dec 10, 2019 10:41 am    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

60ragtop wrote:
Get original style German hose like this
https://www.mtmfg.com/part/view/oem-german-heater-...129-087AGR


I hate those aluminum hoses. They dent easy and collect dirt. I agree with the German hoses above. That’s what I run. However the plastic ones in this link are nice. I think they look pretty good too. Durable and easy to clean.

https://www.mtmfg.com/part/view/fresh-air-hose-to-...gL5BPD_BwE
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Cusser
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PostPosted: Tue Dec 10, 2019 11:06 am    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

I use 2 inch i.d. air duct with wire reinforcement (defroster duct air hose) in some applications; especially good with AC-equipped engines to go around the compressor.
https://www.pegasusautoracing.com/productselection...gLac_D_BwE
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Tim Donahoe
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PostPosted: Tue Dec 10, 2019 11:19 am    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

I bought new black paper-reinforced aluminum fresh air hose about five or six years ago. After removing the engine four or five times since, the hoses still look great and continue to hold their shape.

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PostPosted: Tue Dec 10, 2019 11:22 am    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

Agree with above.

OEM style hoses
http://www.wolfsburgwest.com/cart/DetailsList.cfm?ID=028129087A

Also some utilize these hoses which are made for aircraft for a more durable option (many diameter choices available, for your fan shroud you would need 2" ID )

https://www.aircraftspruce.com/catalog/appages/sceet.php?recfer=18773
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FreeBug
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PostPosted: Tue Dec 10, 2019 12:48 pm    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

I'm not entirely sure what you are asking. I think what you're talking about is a solution for the hoses beneath the tin.

I don't have a one-piece solution, or one that contributes to the overall heating, but at least I don't have to change hoses very often.


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Pls forgive the dust, my projects take a long time.

I think CSP has some sort of one-piece solution:

https://www.csp-shop.com/en/exhaust-heating/heater-hose-fitting-csp-255-165-csp-27591h.html

Hope that was of some help...
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wccdavehamby
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PostPosted: Tue Dec 10, 2019 1:00 pm    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

I am amazed that someone hasn’t come out with an industrial strength solution (1 piece) that has that tight bend around the header, up through the tins and into the fan shroud. The German ones are the best, but still have issues when bending around headers. Maybe time to fab up a solid part that attaches to the heater box and punches through the tins.
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APPLEGREENVW
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PostPosted: Tue Dec 10, 2019 2:40 pm    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

https://www2.cip1.com/ProductDetails.asp?ProductCode=C31%2D129%2D087%2D021VA
https://www2.cip1.com/ProductDetails.asp?ProductCode=C31%2D255%2D165%2DCSP
Have you seen these?
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keg184
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PostPosted: Tue Dec 10, 2019 5:36 pm    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

I used a radiator hose down to the tin. I to got tired of denting the flimsy aluminum ducting.
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VW_Buggsy
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PostPosted: Tue Dec 10, 2019 7:50 pm    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

I've used 2" flexible steel exhaust tubing before. It's stiff and a little hard to make sharp bends but very durable and doesn't crush. Not too spendy either.

https://www.jegs.com/i/Dynomax/289/46973/10002/-1

You can also find it in local flaps sometimes.

It's galvanised so it doesn't rust, but not sure if it gets hot enough to release any harmful zinc from the galvanised metal. Probably fine from the shroud to the apron tin.
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FreeBug
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PostPosted: Wed Dec 11, 2019 3:28 pm    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

APPLEGREENVW wrote:
https://www2.cip1.com/ProductDetails.asp?ProductCode=C31%2D129%2D087%2D021VA
https://www2.cip1.com/ProductDetails.asp?ProductCode=C31%2D255%2D165%2DCSP
Have you seen these?


Those would eventually saw through by rubbing on the tin.
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FreeBug
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PostPosted: Wed Dec 11, 2019 3:32 pm    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

wccdavehamby wrote:
I am amazed that someone hasn’t come out with an industrial strength solution (1 piece) that has that tight bend around the header, up through the tins and into the fan shroud. The German ones are the best, but still have issues when bending around headers. Maybe time to fab up a solid part that attaches to the heater box and punches through the tins.


Berg had something like that, on type 3 exhausts. I share your frustration, and it would be a bonus to build it to go around the exhaust, to pick up some heat, like stock. Keep us posted.
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Floating VW
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PostPosted: Wed Dec 11, 2019 10:09 pm    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

FreeBug wrote:
wccdavehamby wrote:
I am amazed that someone hasn’t come out with an industrial strength solution (1 piece) that has that tight bend around the header, up through the tins and into the fan shroud. The German ones are the best, but still have issues when bending around headers. Maybe time to fab up a solid part that attaches to the heater box and punches through the tins.


Berg had something like that, on type 3 exhausts. I share your frustration, and it would be a bonus to build it to go around the exhaust, to pick up some heat, like stock. Keep us posted.

That's funny, I did this very thing just last summer. I did a write-up on a couple weeks ago. Here ya' go:

https://www.thesamba.com/vw/forum/viewtopic.php?t=728036&highlight=

It wasn't exactly one piece, but I don't mind.
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PostPosted: Fri Dec 13, 2019 8:05 am    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

This tread reminded me of my first Bug, '63. The PO had used an oxygen hose off of a fighter pilot's mask for the pre-heater hose. Very flexible and tough.
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RA 70
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PostPosted: Fri Dec 13, 2019 8:28 am    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

https://www2.cip1.com/ProductDetails.asp?ProductCode=C31%2D255%2D165%2DCSP

Those work great for the under the tin to header. I use the OE style black ones on top.
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FreeBug
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PostPosted: Fri Dec 13, 2019 8:32 am    Post subject: Re: Custom Pre-Heater hoses? Reply with quote

Floating VW wrote:
FreeBug wrote:
wccdavehamby wrote:
I am amazed that someone hasn’t come out with an industrial strength solution (1 piece) that has that tight bend around the header, up through the tins and into the fan shroud. The German ones are the best, but still have issues when bending around headers. Maybe time to fab up a solid part that attaches to the heater box and punches through the tins.


Berg had something like that, on type 3 exhausts. I share your frustration, and it would be a bonus to build it to go around the exhaust, to pick up some heat, like stock. Keep us posted.

That's funny, I did this very thing just last summer. I did a write-up on a couple weeks ago. Here ya' go:

https://www.thesamba.com/vw/forum/viewtopic.php?t=728036&highlight=

It wasn't exactly one piece, but I don't mind.


Yeah, I read your thread, I figure with an afternoon or two, I can reproduce what you have done. Easy.... Laughing Laughing Laughing


There's something that occurred to me: the question is it's own answer: "custom" implies bespoke, one-off. So the title acknowledges that there are no industrial one-piece solutions...

but there should be. Confused
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