Anyone spot the error with this diagram?

[Stagdad]

Just looking to see if the Mk1 plumbing would have to be changed for my water pump mod .I think this is wrong.

Cheers Steve

[Stagdad]

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And this one is wrong

[les M]

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Steve

not sure about the MK1 set up but I think the same chap did both of those drawings, as he assumes that the water flow is a**e about t*t.

Les

[Stagdad]

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Exactly Les,wonder how many people have got confused looking at them over the years.

Cheers Steve

[DaveB]

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Sameproblemwhensearching for a stainless 'heater return pipe' some suppliers call it a 'return pipe' otherscall it a 'feed' pipe. :?

Dave

[mad cyclist]

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funny that cos i never thought about it as a flow guide just what part of the hose fitted where.

also these manualsdrawings where never intended for use by home mechanics, just for local BL blacksmiths..eh Russ!

[jleyton]

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So, can I just check? - are you all saying that the top pipefrom the heater should go to the hose to the left hand head and the bottom one connects to the short hose that is connected to the metal pipe through the vee ??

I took both off the other day and then, stupidly, couldn't remember which went where. I looked at a number of pictures and it seemed to be the way I've described above.

However, shortly afterwards I was talking to Peter at LD Parts - who is amazingly knowledgeable - and he suggested that a) it didn't really matter which way the flow went through the heater matrix and b) that 'officially' it should be the other way around (Ie top heater outlet connects to pipe down the vee.

Now I'm confused :?- although does it really matter which one goes where?

[dasadrew]

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mad cyclist wrote:

funny that cos i never thought about it as a flow guide just what part of the hose fitted where.

also these manualsdrawings where never intended for use by home mechanics, just for local BL blacksmiths..eh Russ!

Ditto. I think the arrows just show where the next drawing/assembly is, not water flow.

The BL Parts Manual doesn't appear to have them.

[Stagdad]

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dasadrew wrote:

mad cyclist wrote:

funny that cos i never thought about it as a flow guide just what part of the hose fitted where.

also these manualsdrawings where never intended for use by home mechanics, just for local BL blacksmiths..eh Russ!

Ditto. I think the arrows just show where the next drawing/assembly is, not water flow.

The BL Parts Manual doesn't appear to have them.

This pic clearly states "Heater feed from water pump" and "heater return to l/h head" which is the wrong way around.

Cheers Steve

[jleyton]

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But, as Peter from LD Parts said, does it matter which way the water flows through the heater matrix?

[Stagdad]

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jleyton wrote:

But, as Peter from LD Parts said, does it matter which way the water flows through the heater matrix?

Probably not,I'm just saying that the water come out of the back of the head not goes in that way as the drawing suggests which would confuse people using this diagram to try and understand the coolant flow of their engine.

Cheers Steve