Servo connections

[Locust]

Can somebody please assist me, does the vacuum pipe for the servo on a Mk 2 Escort connect to the same place as the pipe from the oil separator. 

Presently I have one connection from the breather to the inlet manifold. Possibly this needs to be split into two ????

[Fozzy48]

As a general rule it goes onto the inlet manifold to help create a vacuum when you decelerate. You can see where mine comes from and along the radiator to the servo. Rubber pipe to copper then rubber to servo.

Fozzy

[Locust]

I have a 1600 ohv 1979 so would I be correct in connecting it to the same pipe as the oil separator pipe.

[Fozzy48]

1 hour ago, Locust said:

I have a 1600 ohv 1979 so would I be correct in connecting it to the same pipe as the oil separator pipe.

Well I'm not sure about that mate. But this one looks like its running into the inlet manifold.

What does it say in the manual.?

Fozzy

[Locust]

I have both the good old Haynes manual and also the workshop manual but I seem unable to see the position.

[colr6]

I would have thought that the servo take off will be on its own, the crankcase breather and also vac for distributor will be off another one

[mike399]

No servo pipework must come direct from inlet manifold. Oil separator should be left as is. Other wise u run the risk of oil mist entering the servo body. Internal rubber servo rubber won't like oil.

Sent from my SM-N9005 using Tapatalk

[PeterMEscort]

The crankcase breather/oil separator is just that. It is a breather.

The only reliable vacuum for the booster is at the inlet manifold.

[Ray]

on standard mk1 OHV, the inlet manifold has a standard open tee piece, this is just above the water (heater supply) elbow, one side supplies the servo and the other the crank case breather non return valve, on the mexico variant the servo and the crank case breather valve are taken from separate ports of the manifold (different manifold) however it is still the same part (chamber) supplying the vacuum, the distributor vacuum is taken from the carburettor not the manifold

cant imagine the mk2 being much different

 

[Ray]

top left hose is going to the crank case breather, other side of the tee is open ready for hose to the servo

see photo below, the distributor vacuum on the carb, just below the carb is the manifold tee, left to the crank case breather, right to the servo

 

 

[Locust]

On my inlet manifold I have two openings is the lower one for both the servo and crankcase breather. The upper ?? 

[Fozzy48]

38 minutes ago, Locust said:

On my inlet manifold I have two openings is the lower one for both the servo and crankcase breather. The upper ?? 

Mine is located on the back carb and the front is blanked off. I wouldn't imagine it would make much difference which one it was on TBH. 

[Locust]

I have a twin choke webber fitted and the pipe work fitted on YOUR inlet manifold doesn't exist on my inlet manifold.

looking at the inlet Manifold block side there are four holes obviously for each bore and one rectangular which continues to a hole in the front of the inlet manifold, the rectangular hole also exists on the block.  This is the one which I have/believe was the point for the servo and breather but this may be incorrect as there is also another hole above it for something ??

[colr6]

17 minutes ago, Locust said:

I have a twin choke webber fitted and the pipe work fitted on YOUR inlet manifold doesn't exist on my inlet manifold.

looking at the inlet Manifold block side there are four holes obviously for each bore and one rectangular which continues to a hole in the front of the inlet manifold, the rectangular hole also exists on the block.  This is the one which I have/believe was the point for the servo and breather but this may be incorrect as there is also another hole above it for something ??

A pic of your manifold may help sort the issue out to what is or could be used for.

[Fozzy48]

46 minutes ago, Locust said:

I have a twin choke webber fitted and the pipe work fitted on YOUR inlet manifold doesn't exist on my inlet manifold.

looking at the inlet Manifold block side there are four holes obviously for each bore and one rectangular which continues to a hole in the front of the inlet manifold, the rectangular hole also exists on the block.  This is the one which I have/believe was the point for the servo and breather but this may be incorrect as there is also another hole above it for something ??

Those holes could be there for setting the air flow. I have since drilled m5 holes into each of my inlet manifold for airflow metres to be screwed into. Once done theyre filled in with grub screws.

if you wanted to put a pipe like mine for the servo, that would be simple enough to do. Just make sure that any drilling and tapping you do is done with the manifold off or blocked to stop any ingress of swarf into the head. 

These in the box are flow meters which you use to set and balance the carbs up with.

fozzy

[Ray]

1 hour ago, Locust said:

I have a twin choke webber fitted and the pipe work fitted on YOUR inlet manifold doesn't exist on my inlet manifold.

looking at the inlet Manifold block side there are four holes obviously for each bore and one rectangular which continues to a hole in the front of the inlet manifold, the rectangular hole also exists on the block.  This is the one which I have/believe was the point for the servo and breather but this may be incorrect as there is also another hole above it for something ??

the rectangular hole in the middle of the head is water and it supplies the heater, so don't for gods sake connect the servo to that, and it should come out of the manifold below the servo and crank breather port, the pics I posted are a mk1 twin choke weber set up, I cannot believe looking at net and Haynes manual pics, that the mk1 and 2 differ tbh, but as Colin says, a few pics of your manifold will help, the mex uses a slightly different manifold, but same carb re jetted, ut that uses 2 take offs for vacuum, and the servo is taken from more ports 1&2

the centre manifold thread is also designed for a stud like the exhaust manifold has, not a bolt, and the stud needs cementing in, as its head thread is open to the head water circuit, and failure to cement in, or using a bolt, will result in water leakage, and in worst case scenario it sucks the water into ports 2 & 3, as well as leaking from the stud or bolt head, thread lock does not work, as the heat expansion is too great

if your car never had a servo originally and you have added it, this may be why you are missing the Tee piece

[Locust]

The car has at some point had the heater removed therefore that would explain the reason the lower hole is blanked off. The upper one presumably requires a tee piece for both the servo pipe and also the crank breather ??, hopefully the image will help.

[Ray]

mk1 escort Tee

[Ray]

will be the same thread

[Locust]

Are these still available ??

[Ray]

give escort tec or GS escorts a call, bet they will have used ones on the shelf

if not look on flea bay, none singularly at the moment, however if you bought a used manifold with one on, bobs your uncle

or put an ad in the wanted section

[Locust]

great stuff thanks all for your help.