[xj] oil sending unit

is it possible to install an oil pressure sending unit in
the hole where the oll warning switch is located. there is
no oriface on the oil filter housing head.–
lisc 88xj40
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In reply to a message from frec38 sent Tue 23 Jun 2009:

Yes, it’s possible, but why would you need to do it ?
If it’s for your XJ40 you may be better off asking on that forum.
Dave C.–
The original message included these comments:

is it possible to install an oil pressure sending unit in
the hole where the oll warning switch is located. there is
no oriface on the oil filter housing head.


Dave Collishaw '79 S2 Daimler Sov '92 xj40
Peterborough, United Kingdom
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In reply to a message from sparx sent Tue 23 Jun 2009:

to dave c., because it is a replacement engine with a the
pressure sending unit on the back of the head and doesn’t
work. I prefer the electronic unit. you say they are
interchangeable, but will affect the pressyre reading?
thanks for your help. craig r.–
lisc 88xj40
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In reply to a message from frec38 sent Thu 25 Jun 2009:

I’ve never seen an oil pressure sender on the cylinder head.
Coolant temperature sender yes, but the oil pressure that needs
monitoring is in the crankshaft… but life’s a learning game.
When we used to fit an oil pressure gauge as an aftermarket
extra on various types of cars we would take the oil pressure
switch out then fit a Tee piece, to which we reconnected the oil
pressure switch and either a transmitter for an electrical gauge or
the piping for a mechanical one. The oil pressure switch sees the
same pressure that you need for a gauge to work.
Obviously if you just replace the switch with a sender you lose
the warning light.

Dave C.–
The original message included these comments:

to dave c., because it is a replacement engine with a the
pressure sending unit on the back of the head and doesn’t
work. I prefer the electronic unit. you say they are
interchangeable, but will affect the pressyre reading?


Dave Collishaw '79 S2 Daimler Sov '92 xj40
Peterborough, United Kingdom
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
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In reply to a message from sparx sent Thu 25 Jun 2009:

Oil filter housing ‘head’ Dave, not cylinder head.

That’s how I read it anyhow (© Doug Dwyer)

Peter–
The original message included these comments:

I’ve never seen an oil pressure sender on the cylinder head.


68 E-type OTS, 96 X305 XJ12
Cambridge, United Kingdom
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In reply to a message from PeterCrespin sent Thu 25 Jun 2009:

Silly me.
Must have been the ‘‘no orifice on the oil filter housing head’’
statement that threw me. So let’s see if I’ve got this right,
there’s no orifice on the oil filter housing head for an oil
pressure transmitter because there’s an oil pressure tansmitter
screwed into the one that is there…
Duh ?

Dave C.–
The original message included these comments:

Oil filter housing ‘head’ Dave, not cylinder head.
That’s how I read it anyhow (© Doug Dwyer)


Dave Collishaw '79 S2 Daimler Sov '92 xj40
Peterborough, United Kingdom
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In reply to a message from sparx sent Thu 25 Jun 2009:

to dave and peter, yes I meant to say housing head not
cylender head. I will use a tee in lieu of removing the
switch. I really appriciate your help. craig r.–
lisc 88xj40
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The archives and FAQ will answer many queries on the XJ series…
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frec38 wrote:

In reply to a message from sparx sent Thu 25 Jun 2009:

to dave and peter, yes I meant to say housing head not
cylender head. I will use a tee in lieu of removing the
switch.

Also first use the ‘T’ to connect an external and verified gauge while
you are there, mister. This will give you a true oil pressure to verify
the match between the transmitter/gauge combination. It’s not given that
the combination will work irrespective of transmitter selection…:slight_smile:

Frank
xj6 85 Sov Europe (UK/NZ)===================================================
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