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Oil pipe to pressure guage


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Can anyone advise if they have come across this before. Had a tiny split due to a kink in the pipe as it connects to the hose tail. Cut it back a few mm to good pipe but the black pipe does not seem to respond to  very hot water to soften it up. Dont really want to replace it as i assume that would mean going into the dash binacle and I really dont want to do that.  Any comments would be appreciated 

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New pipe installed. Bit of a faf but not too bad. Miniscule leak around gauge. Probably due to no fibre washer so good job i have changed it.  Found the chock cable hanging on with a couple of st

Don't expect wonders with hot water or the heat gun either. With heat cycling and age, the pipe would have thermo-set by now. A new one (pipe) is the only way.

Hi Phil,      Heat gun would be your best bet imo,  but personally i would replace it,  they can split behind the binnacle also,  but as yours has perished engine bay side i would replace it to b

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Hi Phil,  

   Heat gun would be your best bet imo,  but personally i would replace it,  they can split behind the binnacle also,  but as yours has perished engine bay side i would replace it to be on the safe side as the plastic has seen better days i would presume,  just degraded with age and heat  :)

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You could look into the type of compression fitting that slips a double beveled collar over the tube and seals by compressing between a nut and fitting. Common in mechanical gauge fitments. if you can find one for the right tubing OD, then it's just a matter matching thread size to the oil galley hole, perhaps with an adapter if needed. Should get you by until you have another reason to get into the binnacle/console/firewall upholstery etc.

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Dan. Tried the heat gun gently and took my time but not successfull. Pipe will splay out but then stays there so do not see that the security of the pipe on the hose tail would be adequate.  Compression gland is a good idea if i can find a suitable one as Snowrx has mentioned. I will speak to PNM tomorrow. He will have a solution i have no doubt

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1 hour ago, PhilW said:

Dan. Tried the heat gun gently and took my time but not successfull. Pipe will splay out but then stays there so do not see that the security of the pipe on the hose tail would be adequate.  Compression gland is a good idea if i can find a suitable one as Snowrx has mentioned. I will speak to PNM tomorrow. He will have a solution i have no doubt

Don't expect wonders with hot water or the heat gun either. With heat cycling and age, the pipe would have thermo-set by now. A new one (pipe) is the only way.

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7 hours ago, ekwan said:

Don't expect wonders with hot water or the heat gun either. With heat cycling and age, the pipe would have thermo-set by now. A new one (pipe) is the only way.

What Eric says, what Dan said.

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On my TR6 the original injector pipes were made from the same material and, presumably by design, it doesn't soften with heat.  A split jig is used to grip the pipe while you drive home the union.  The simplest jig is 2 pieces of hardwood clamped together and you then drill a hole on the joint marginally smaller OD than the pipe.   Clamp pipe in the jig and smartly tap the union home....

 

 

 

 

 

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Interesting anecdotes from all however, as there is nothing good to be said concerning aged plastic, I should think it best to replace that line. Loss of oil pressure, leakage of engine oil into the cockpit are what you may be at risk of given a line which has split, possibly due to age alone.

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3 hours ago, drdoom said:

Interesting anecdotes from all however, as there is nothing good to be said concerning aged plastic, I should think it best to replace that line. Loss of oil pressure, leakage of engine oil into the cockpit are what you may be at risk of given a line which has split, possibly due to age alone.

I had a Ford Escort RS2000 Custom back in mid-1980s. The oil gauge feed pipe snapped behind the dash. Thank goodness there was 3" of snow all round when that happened, and I had to scoop snow onto my burns.

 

My take is either replace the pipe or with an electrical Smiths Classic electrical gauge (preferable).

 

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I did the electrical oil presuure sender and gauge, due to the engine conversion,  simple wire through the bulkhead, the only slight headache was finding an adapter for the switch on the engine side,  to be honest, i think it is a good upgrade for the esprir, as the modern classic looking smiths gauges will still blend in with the rest of the dash  guages and you will  avoid the risk of the pipe splitting in the future .  

I am sure also ii can remember a post of someone on here who replaced that plastic pipe for a braiided one ?   

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4 hours ago, silverfrost said:

I did the electrical oil presuure sender and gauge, due to the engine conversion,  simple wire through the bulkhead, the only slight headache was finding an adapter for the switch on the engine side,  to be honest, i think it is a good upgrade for the esprir, as the modern classic looking smiths gauges will still blend in with the rest of the dash  guages and you will  avoid the risk of the pipe splitting in the future .  

I am sure also ii can remember a post of someone on here who replaced that plastic pipe for a braiided one ?   

Any idea what the adapter thread sizes were? I believe sensor threads are 1/8"  NPT, but threads on the oil pump ?

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You can't put the pipe back on. Been there done that whilst on a roadtrip in the Alps. Had to drive to a garage will oil pissing everywhere to get the nipple soldered to seal it. New pipe fitted when back home. Pete

Pete '79 S2

LEW Miss September 2009

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11 hours ago, peteyg said:

You can't put the pipe back on. Been there done that whilst on a roadtrip in the Alps. Had to drive to a garage will oil pissing everywhere to get the nipple soldered to seal it. New pipe fitted when back home. Pete

After all, it (the pipe) is holding back hot fluid at anything up to 85psi. 🤣

Not to be sniffed at!

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On 03/06/2019 at 05:03, ekwan said:

I had a Ford Escort RS2000 Custom back in mid-1980s.

I lusted after one of those back then. I still have a bit of a soft spot for them now to be honest.

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Lotus Esprit [meaning] a 1:1 scale Airfix kit with a propensity to catch fire

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12 hours ago, Paul Coleman said:

I lusted after one of those back then. I still have a bit of a soft spot for them now to be honest.

OGC609V was mine 

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