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Plastic coolant pipe?
speedyxjs - 1/11/08 at 09:05 PM

Would this be ok to use in the coolant system?
Im just trying to act locost as normal.


mark chandler - 1/11/08 at 09:11 PM

I cannot say I have ever seen pipe that size used in hot applications under pressure.

Good old copper pipe for me I,m afraid.

When dealing with stuff like cooling its always better to spend a little more, very frustrating to go for a track day and pack in early because something like this is not up to the job.

Regards Mark


speedyxjs - 1/11/08 at 09:13 PM

Ok cheers


thunderace - 1/11/08 at 09:15 PM

look at this Item number: 290036058760
and this Item number: 130088711355

and you can put a lip on it with a tool from b&q there is a thread about it on this forum .the tool worked on this stainless tube i have tryed it.


BenB - 2/11/08 at 12:14 AM

One way of finding out

I suspect it might not like it though it depends if its PVC or one of the other plastics. The coolant is going to be pretty hot and under pressure- not a nice combination when quite a few plastics go a bit soft when heated.
Then again I got a datasheet for the 110mm waste pipe I'm using for my plenum chamber and that shows that 80degC and 10PSI isn't a problem.... Not sure what pressure radiators run at???


britishtrident - 2/11/08 at 08:58 AM

Plastic central heating pipe will work -- I bought an Imp racer that had the front rad plumbed in with it. But it is working pretty near its limmit and I don't know how long it would last in road car use.


TOO BADD - 2/11/08 at 11:57 AM

Def not. Used a higher quality for hose joiners and it as crap. Round ended up oval after a bit of heat, Ended up with ali.


matt_claydon - 2/11/08 at 12:20 PM

Several on here have used this aluminium aerial pole from B&Q to good effect, just so happens it's 32mm:


MikeRJ - 2/11/08 at 12:26 PM

Alloy tube isn't very expensive. I don't really trust the plastic stuff in houses let alone in something running at potentially over 100 degrses at 15PSI.


whitestu - 2/11/08 at 12:47 PM

I used high temp 32mm pipe on my CVH installation with no problems. It never overheated though so don't know how it would perform when really hot.

Stu


geoff shep - 2/11/08 at 02:32 PM

I don't think the original suggestion would be any good - that looks like waste pipe. Pressure pipe for water suply or central heating should be ok - its rated at 6 or 7 bar which is around 90psi. However any plastic pipe will potentially melt on contact with hot engine parts such as exhaust manifolds etc.


speedyxjs - 2/11/08 at 03:43 PM

Ok cheers guys. The ali pole was suggested in a previous thread i posted but no B%Q's anywhere near me have it in stock
I did see those henry extensions and was considering them but the plastic was cheaper