Knack for thermostat pipe

Big lumps of metals and spanners. Including servicing and fluids.

Moderators: User administrators, Moderators

Post Reply
Sir Brixalot
Registered user
Posts: 4569
Joined: 15 Oct 2010, 21:55
80-90 Mem No: 8927
Location: London

Knack for thermostat pipe

Post by Sir Brixalot »

I had a leak from thermostat end of coolant pipe that runs from thermostat to junction behind engine. Gradually tightened clip but leak didn't stop and eventually got so tight that pipe was split. Bought a brand new one from BW, same thing - leaking from end of pipe ath thermostat end.
Is there a knack to it?
Honorary "Dave" 

 

User avatar
itchyfeet
Registered user
Posts: 12427
Joined: 23 Jul 2007, 17:24
80-90 Mem No: 12733
Location: South Hampshire

Re: Knack for thermostat pipe

Post by itchyfeet »

I have the same on my tin top
you really need the spring loaded OEM clip.but a pita to get in there need to do.it from underneath.
dunno where you buy them
1988 DG WBX LPG Tin Top
1989 DJ digijet WBX Holdsworth Villa 3 Pop Top
itchylinks

Sir Brixalot
Registered user
Posts: 4569
Joined: 15 Oct 2010, 21:55
80-90 Mem No: 8927
Location: London

Re: Knack for thermostat pipe

Post by Sir Brixalot »

Just binned the spring clip as well having swapped it for a jubilee.
Honorary "Dave" 

 

User avatar
Ian Hulley
Registered user
Posts: 12659
Joined: 11 Oct 2005, 08:08
80-90 Mem No: 1323
Location: Wirksworth, Derbyshire ... or at t'mill

Re: Knack for thermostat pipe

Post by Ian Hulley »

Do you mean this pipe ?

Image

and this hose ?

Image

I don't see how you can split that pipe ? Maybe you mean you split the hose ? If you have a drip dry the hose and apply a light smear of grease or Blue Hylomar to the inside of the hose. It shouldn't need to be too tight to seal it.

Ian

PS Maybe an afternoon studying the Brickwerks site may help you explain which parts you mean ...
The Hulley's Bus
1989 2.1DJ Trampspotter
LPG courtesy of Steve @ Gasure

Sir Brixalot
Registered user
Posts: 4569
Joined: 15 Oct 2010, 21:55
80-90 Mem No: 8927
Location: London

Re: Knack for thermostat pipe

Post by Sir Brixalot »

Its the long rubber one from thermostat that then runs along back of engine.
Honorary "Dave" 

 

User avatar
Mr Bean
R.I.P.
Posts: 3532
Joined: 11 Jun 2008, 06:49
80-90 Mem No: 5485
Location: Hertfordshire

Re: Knack for thermostat pipe

Post by Mr Bean »

When I replaced my engine recently I had a leak from the non-thermostat end of that metal pipe which turned out to be a minute crack in the brazing of the "T" junction. I fixed it by filing a "V" into the crack and silver soldering it. Got to admit it had me puzzled for a time :?
Well-timed silence hath more eloquence than speech.
"A quiet shy boy who took little part in games or sport"
88 High top 2.1 WBX

User avatar
itchyfeet
Registered user
Posts: 12427
Joined: 23 Jul 2007, 17:24
80-90 Mem No: 12733
Location: South Hampshire

Re: Knack for thermostat pipe

Post by itchyfeet »

Sir Brixalot wrote:Its the long rubber one from thermostat that then runs along back of engine.


https://www.vwheritage.com/251121058a-c ... r-vw-spare" onclick="window.open(this.href);return false;
1988 DG WBX LPG Tin Top
1989 DJ digijet WBX Holdsworth Villa 3 Pop Top
itchylinks

Sir Brixalot
Registered user
Posts: 4569
Joined: 15 Oct 2010, 21:55
80-90 Mem No: 8927
Location: London

Re: Knack for thermostat pipe

Post by Sir Brixalot »

Already fitted new coolant pipe. Leaks in the same place as the old one. Perhap the plastic mount has cracked
Honorary "Dave" 

 

lefty67
Registered user
Posts: 1920
Joined: 29 Sep 2012, 12:00
80-90 Mem No: 11783
Location: s. cheshire

Re: Knack for thermostat pipe

Post by lefty67 »

Think you might have answered your own question. I had a similar leak on my van. No matter how much tightening and messing about couldn't get rid of a drip on the plastic water flange. Over time it had slightly warped, changed it and all was well again.
1.9td AAZ

T25 - an adventure before dementia

lefty67
Registered user
Posts: 1920
Joined: 29 Sep 2012, 12:00
80-90 Mem No: 11783
Location: s. cheshire

Re: Knack for thermostat pipe

Post by lefty67 »

itchyfeet wrote:I have the same on my tin top
you really need the spring loaded OEM clip.but a pita to get in there need to do.it from underneath.
dunno where you buy them

http://www.trecarn.co.uk/spring-band-clamps.html" onclick="window.open(this.href);return false;
1.9td AAZ

T25 - an adventure before dementia

Sir Brixalot
Registered user
Posts: 4569
Joined: 15 Oct 2010, 21:55
80-90 Mem No: 8927
Location: London

Re: Knack for thermostat pipe

Post by Sir Brixalot »

useful link thanks.
Honorary "Dave" 

 

Sir Brixalot
Registered user
Posts: 4569
Joined: 15 Oct 2010, 21:55
80-90 Mem No: 8927
Location: London

Re: Knack for thermostat pipe

Post by Sir Brixalot »

Looks like there is a very fine crack in plastic housing. Didn't look much but for the moment after replacing the housing it seems that leak has stopped. Who would have thought the metal pat of the housing would be so sharp!
Honorary "Dave" 

 

Sir Brixalot
Registered user
Posts: 4569
Joined: 15 Oct 2010, 21:55
80-90 Mem No: 8927
Location: London

Re: Knack for thermostat pipe

Post by Sir Brixalot »

Spoke too soon. Still leaks despite changing everything. Don't suppose anyone could tell me which size spring clip I need for the pipe?
I would measure it myself but I don't know how the fitting is measured eg is a 12mm spring clamp for a 12mm pipe or is the clamp slightly smaller than the pipe
Honorary "Dave" 

 

Post Reply