Oil pressure gauge / heater pipe clash

PostPost by: Bodmin » Mon Jul 04, 2022 11:40 am

Does anyone have a simple solution to the problem of the oil pressure gauge / heater pipe clash?

I see an offset heater pipe spigot is available, although expensive.

My cylinder block is tapped with a 1/4 BSP thread. I have a nylon oil pressure gauge hose which is kinked as it passes the heater hose. I’ve seen exactly the same issue on many other cars at various shows.

I’m thinking about using a banjo bolt arrangement, and adapting the banjo to accept a 1/8 NPT adapter into which the nylon pipe can be attached.

Just wondering if there were any other solutions out there?
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PostPost by: ericbushby » Mon Jul 04, 2022 2:12 pm

Hi Bodmin,
My pipes don`t interfere, although they may be just touching.
The engine block was originally tapped NPT. Are you sure that it isn`t that now, there is very little difference.
If so, can you use a female to male elbow fitting.
For clarity, the block is tapped NPT but the cylinder head being a wholly British design is BSP.
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PostPost by: gjz30075 » Mon Jul 04, 2022 6:51 pm

I have both the 90 degree fitting and a straight fitting and both go under the heater hose. Close,
but it clears.
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PostPost by: pharriso » Mon Jul 04, 2022 11:52 pm

Here's my Oil pressure pipe & heater hose:
IMG_2691.jpg and
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PostPost by: cabc26b » Fri Jul 08, 2022 7:45 pm

Here is what we did ..
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PostPost by: Bodmin » Fri Jul 08, 2022 7:58 pm

cabc26b wrote:Here is what we did ..


That looks like a great solution and exactly what has been running through my mind.

I’m still pursuing the banjo bolt option, but it doesn’t have the ‘elegance’ I desire.

I might purchase a sliding table for my lathe (in the absence of a milling machine), and look at machining a brass block similar to yours. You wouldn’t happen to have a sketch handy with the principal dimensions??

Thanks
MT
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PostPost by: elanner » Tue Jul 12, 2022 10:20 pm

Here's the oil pipe that I purchased from Ray at R.D. Enterprises a number of years ago. His web site shows that he still stocks them.

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Elan-oil-pressure-gauge-pipe.jpg and
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PostPost by: snowyelan » Tue Jul 12, 2022 11:38 pm

I have the RD solution on mine now but what I took off also had a pipe bent thru 90 as well. The old plastic tube pressed over the pipe was the only reason I replaced it. It seemed somewhat brittle after 50+ years. Clean sheet I'd probably use the RD bent pipe with an appropriate rubber and steel braid hydraulic hose properly selected.
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PostPost by: mbell » Wed Jul 13, 2022 12:15 am

I have that setup on my car and it fouls the heater hose on my car. My block does have the 1/4" threaded hole rather the 1/8". I have swapped the supplied 1/8" fitting and 1/4" to 1/8" convertor to a 1/4" fitting but still have the same issue.

Fyi The bend is part of the hose not an extra part.
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