025121058M 2.1 "Peace Pipe" coolant hose - better solution

[vanis13]

025121058M 2.1 "Peace Pipe" coolant hose - better solution

This coolant hose has cost me an engine and has caused trouble for others.

It is a specific/funky hose with two different size ends and a close bend that sits under the AC compressor. Basically if it fails there isn't a simple solution

On this thread tencentlife wrote about a permanent solution here https://www.thesamba.com/vw/forum/viewtopic.php?p=10254133#10254133

"As to permanent fixes, those 1" hose nipples on the cyl heads can be tapped to 1/2" FPT, the nipple ID is ready for a 1/2" NPT pipe tap without drilling."

Thanks tencentlife/Chris!

Here's how I did it. Notice the shop vac blowing in the thermostat hole. It pushed out the aluminum shavings.

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www.SuperVanagon.com - some stuff I make

[sanchius]

Very nice!

An elegant, easy, & reversible fix that I haven't seen documented here before that solves a vexing Vanagon design problem, lots of great pictures and text/info, and a descriptive title.

This has it all! Thanks for posting this!
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[MayorMcCheese]

Silly cone version too.

https://vancafe.com/silicone-coolant-hose-off-of-cy-4-all-2-1l/

[DanHoug]

wow! i hadn't seen that mod before. congrats to Chris for the idea and Andy for pulling it off so well. gonna do that on an engine i have in the stand. this is great!
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-dan
60% of what you find on the internet is wrong, including this post.

'87 Westy & '89 Westy both 2.1 4spd

Past projects can be found at--
www.thefixitworkshop.com

[dhaavers]

Likewise, beautiful mod…well done!

Not having seen this before, I recently sprung for the GW option (although haven’t installed yet):

https://gowesty.com/products/aluminum-coolant-elbo...6748276901

Your rig is much more elegant and keeps the original 2 clamp configuration (vs. 4 for the GW).

I may have to reconsider my options…

- Dave

PS: What’s a 1/2” tap co$t…???
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86 White Wolfsburg Westy Weekender
"The WonderVan"
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[?Waldo?]

[vanis13]

[dhaavers]

[Sodo]

Thats a nice mod.

For some, that could be the first time they've cut a thread.
A first-timer might appreciate a YouTube with some dialogue, about advancing, then reversing to clear the chips.
And using the fitting to decide "how deep" to thread a tapered pipe.

A before and after pic would be cool too.
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'90 Westy EJ25, NEW oil rings (!) 2Peloquins, 3knobs, SyncroShop pressure-oiled pinion-bearing & GT mainshaft, filtered, cooled gearbox.
'87 Tintop w 47k 53k, '12 SmallCar EJ25, cooled filtered original gearbox
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[DanHoug]

i looked at tap options, from $6.99 ones, to $15 Irwin ones to $240 Emuge ones that machinists love.

did a bunch of 1" and 1.25" NPT stuff on a friend's ground source heat pump and had several leaks from the Chinese fittings despite liberal use of a high quality pipe dope and more torque than should have been needed. had to re-apply dope and re-tighten a few to crazy stupid levels. so, not wanting to split the head outlet, i decided to go quality and found a NEW Emuge 1/2" NPT tap for $40. zooming in on the cutting threads on the Emuge, they are simply beautiful machining compared to the rough cutters on the cheapos. $25 more than the Irwin but, like Loreal, "I'm worth it". actually, just want to do this once on the heads i modify having just suffered insufferable NPT fittings.

the observant will notice this is an NPTF tap... designed to seal without sealant. since NPT threaded parts require sealing compounds, it is acceptable to use an NPTF tap for NPT applications.

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-dan
60% of what you find on the internet is wrong, including this post.

'87 Westy & '89 Westy both 2.1 4spd

Past projects can be found at--
www.thefixitworkshop.com

[vanis13]

[vanis13]

[DanHoug]

[dhaavers]

Thanks for the reply, all good chatter…

I just verified, my brother (plumber) has a 1/2” NPT tap to borrow, no cost other than a 1.5 hour round trip.

Also found this…short of starting another stainless debate, might be just the thing…???

https://www.amazon.com/dp/B08FX9TX6N/?coliid=I1R4I...t&th=1

Tag, you’re it!

- Dave
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86 White Wolfsburg Westy Weekender
"The WonderVan"
<EDITED TO PROTECT INNOCENT PIXELS>

[vanis13]

[vanis13]

[vanis13]

[dhaavers]

Hoses & wires: A little too big is better than a little too small.



- Dave
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86 White Wolfsburg Westy Weekender
"The WonderVan"
<EDITED TO PROTECT INNOCENT PIXELS>

[DanHoug]

[rustyCamper]

Brass is higher on the galvanic series than aluminum. You will likely get galvanic corrosion around the threads contacting the the fitting and this will likely develop a leak as the corrosion eats through.