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Got this threaded hole
Posted: Wed Feb 01, 2012 10:34 pm
by marcjagman
Got a threaded hole on my inlet manifold, to the left of the thermostat housing and facing the front of the engine. Can anyone enlighten me as to what it's for? I was thinking maybe electric fan thermo switch, can it be blocked of?
Posted: Wed Feb 01, 2012 10:47 pm
by ged
Temperature transmitter.
Posted: Thu Feb 02, 2012 8:47 am
by DEVONMAN
It looks like it goes straight into the inlet port so it will be for a vacuum take off for say a brake servo.
Denis
Posted: Thu Feb 02, 2012 1:15 pm
by ChrisJC
I think it's for the brake servo too.
Chris.
Re: Got this threaded hole
Posted: Thu Feb 02, 2012 2:25 pm
by ged
[quote="marcjagman"]
Got a threaded hole on my inlet manifold, to the left of the thermostat housing and facing the front of the engine.
My mistake, but from the description thought he meant the one as above. The one on the top of the manifold is indeed for the servo spigot.
Regards Ged
Posted: Thu Feb 02, 2012 3:19 pm
by Eliot
Yup - brake servo vac port.
Posted: Fri Feb 03, 2012 9:08 pm
by marcjagman
er no, not brake servo it is in a waterway
Posted: Fri Feb 03, 2012 9:44 pm
by mgbv8
marcjagman wrote:er no, not brake servo it is in a waterway
No its not!!
Its in the inlet runner. Its the vac take off for the brake servo.
The item to the right is the otter switch in the waterway for the rad fan.
Posted: Fri Feb 03, 2012 10:14 pm
by harvey
The one on the top next to the Otter switch is for the servo, the one on the front next to the thermostat housing (which was the one the original question was asked about) is for the temp guage sender unit. The Otter switch isn't for fan control, it's for a choke warning light.
Posted: Fri Feb 03, 2012 10:23 pm
by marcjagman
Hopefully this will save confusion as to what hole it is, I'm sure it's a waterway.
Posted: Sat Feb 04, 2012 6:40 am
by ged
I was right!
Temperature Gauge Transmitter.
Regards Ged
Posted: Sat Feb 04, 2012 8:15 am
by softdash3.9
Rover P6 inlet manifold iirc
Posted: Sat Feb 04, 2012 8:28 am
by DEVONMAN
I think the confusion was due to the fact that there is an unpainted threaded hole in the first photograph which is not the one in question.
The hole in question is facing forward and is in the waterway and is for the temperature gauge transmitter.
The one on top of the manifold is for the servo take off and I believe a non return valve screws into it on some models.
Denis
Posted: Sat Feb 04, 2012 11:00 pm
by mgbv8
DEVONMAN wrote:I think the confusion was due to the fact that there is an unpainted threaded hole in the first photograph which is not the one in question.
The hole in question is facing forward and is in the waterway and is for the temperature gauge transmitter.
The one on top of the manifold is for the servo take off and I believe a non return valve screws into it on some models.
Denis
That makes more sense!!!
Temp gauge sender hole for sure
Posted: Sun Feb 05, 2012 3:19 pm
by harvey
softdash3.9 wrote:Rover P6 inlet manifold iirc
I think it's early Range Rover.