What did you do in the garage yesterday?

[Oneball]

phazed said:

These are the only ones that I could find.

https://www.simtekuk.co.uk/product.php/vacuum_pump...

Or this.

https://www.carbuildersolutions.com/uk/electric-va...

Edited by phazed on Monday 5th February 07:21

My 2004 Alpina B3s had a vacuum pump and pressure switch under the manifold. IIRC they were about £250 for the pump and £30 for the switch.

They’re made by Pierburg and a quick google seems to bring up SAAB 900/9000/9-5 Turbos having the same system. SAAB part number 4646220. There must be other cars too. Diesels can’t generate enough vacuum so often have a pump but this is usually engine driven.

[citizen smith]

phazed said:

These are the only ones that I could find.

https://www.simtekuk.co.uk/product.php/vacuum_pump...

Or this.

https://www.carbuildersolutions.com/uk/electric-va...

Edited by phazed on Monday 5th February 07:21

Servo assisted clutches appear to be a plumbing nightmare, let alone the expense. The Electric back-up pump, seems to be a great solution to the problem that you have.

Should be a nice light clutch, once the whole system is installed.

[phazed]

The competition clutch as standard is extremely heavy.

With the brake servo plumbed in at the moment for instance on over run, the clutch is lovely and light.

Slow speed manoeuvering, i.e. low revs required, about 1000 rpm, there is very little vacuum and not only is the clutch heavier but the pedal returns in jerks which you can imagine is far from acceptable!

[QBee]

Oneball said:

phazed said:

These are the only ones that I could find.

https://www.simtekuk.co.uk/product.php/vacuum_pump...

Or this.

https://www.carbuildersolutions.com/uk/electric-va...

Edited by phazed on Monday 5th February 07:21

My 2004 Alpina B3s had a vacuum pump and pressure switch under the manifold. IIRC they were about £250 for the pump and £30 for the switch.

They’re made by Pierburg and a quick google seems to bring up SAAB 900/9000/9-5 Turbos having the same system. SAAB part number 4646220. There must be other cars too. Diesels can’t generate enough vacuum so often have a pump but this is usually engine driven.

I have a Saab parts contact if you want the details.
But there are loads of redundant Saab 9-5s around where you can get parts for peanuts.
And a Saab forum on Faceache - I will have an ask on there. There's a bloke breaking a 9-5 who owes me a favour.
We could even hijack the pump off my Saab to try it out if you like.

[phazed]

Thank you for the kind offer.

The Saab pump if it is electric would no doubt work. The trickery is in finding and fitting a suitable switch to plumb into the circuit which will detect when vacuum is required.

The beauty of the kits that I highlighted is that they are an all inclusive including the switch/relay and vacuum pump. Of course you have to pay for it!

[QBee]

phazed said:

Thank you for the kind offer.

The Saab pump if it is electric would no doubt work. The trickery is in finding and fitting a suitable switch to plumb into the circuit which will detect when vacuum is required.

The beauty of the kits that I highlighted is that they are an all inclusive including the switch/relay and vacuum pump. Of course you have to pay for it!

It is definitely electric - I can see the connector in the picture I googled. I am at home tomorrow (no, not an accountants’ coffee morning) and will have a look at my 9-5 to see if I can spot the switch.

[DangerousDerek]

Finally have a roof so started on the interior

garagewall1 by Derek Beck, on Flickr

garagewall2 by Derek Beck, on Flickr

[N7GTX]

citizen smith said:

Servo assisted clutches appear to be a plumbing nightmare, let alone the expense. The Electric back-up pump, seems to be a great solution to the problem that you have.

Yes, Peter went for the harder route mounting the servo in the wing void. I couldn't do this due to intercooler pipes and carbon canister, air horns etc etc so the easiest place was the boot. On a ramp this job is a doddle and no need to remove the exhaust. Mine is right in the bottom corner on the driver's side. The pipework runs along the chassis and TVR kindly pre-drilled 3 holes in the bodywork at the bottom of the rear wheel arch so the brake pipes and vacuum pipe were easily fitted. The position in the boot does not interfere with stowing the roof panel. Result.

[citizen smith]

N7GTX said:

citizen smith said:

Servo assisted clutches appear to be a plumbing nightmare, let alone the expense. The Electric back-up pump, seems to be a great solution to the problem that you have.

Yes, Peter went for the harder route mounting the servo in the wing void. I couldn't do this due to intercooler pipes and carbon canister, air horns etc etc so the easiest place was the boot. On a ramp this job is a doddle and no need to remove the exhaust. Mine is right in the bottom corner on the driver's side. The pipework runs along the chassis and TVR kindly pre-drilled 3 holes in the bodywork at the bottom of the rear wheel arch so the brake pipes and vacuum pipe were easily fitted. The position in the boot does not interfere with stowing the roof panel. Result.

So, you do not have the same problem that Peter has, with the a low of Vacuum at low rev's when manoeuvring. Thus making the Pedal Heavy?

[N7GTX]

citizen smith said:

N7GTX said:

citizen smith said:

Servo assisted clutches appear to be a plumbing nightmare, let alone the expense. The Electric back-up pump, seems to be a great solution to the problem that you have.

Yes, Peter went for the harder route mounting the servo in the wing void. I couldn't do this due to intercooler pipes and carbon canister, air horns etc etc so the easiest place was the boot. On a ramp this job is a doddle and no need to remove the exhaust. Mine is right in the bottom corner on the driver's side. The pipework runs along the chassis and TVR kindly pre-drilled 3 holes in the bodywork at the bottom of the rear wheel arch so the brake pipes and vacuum pipe were easily fitted. The position in the boot does not interfere with stowing the roof panel. Result.

So, you do not have the same problem that Peter has, with the a low of Vacuum at low rev's when manoeuvring. Thus making the Pedal Heavy?

No, I'm on a standard cam. Peter's cam never lets the valves close You do have to let the engine start and run for a second or two before pressing the clutch to let the vacuum build up.

[SILICONEKID 345HP 12.03]

Im wondering if poor vac could effect the braking system .

[Sardonicus]

SILICONEKID 345HP 12.03 said:

Im wondering if poor vac could effect the braking system .

Of course it could Daz yes, brake servo has more time to recover and less actuations back in the day running around with fast 4cyl Fords running big side-draught carbs & bigger cams than any of us run in our RV8' we'd run a servo off just one cylinder tract with no issues its how the manifolds came pre drilled on just one runner, I run a big Rover 2000 P6 servo plumbed this way for years

Edited by Sardonicus on Monday 5th February 23:47

[ChimpOnGas]

phazed said:

These are the only ones that I could find.

https://www.simtekuk.co.uk/product.php/vacuum_pump...

Or this.

https://www.carbuildersolutions.com/uk/electric-va...

Edited by phazed on Monday 5th February 07:21

Peter, I'd be looking at the more modern, reliable and efficient vane style pumps rather than the diaphragm type offed by CBS. A vane pump will be much quieter, more compact and pull less amps too.

The most common one comes from Hella, it's German made, used by OEMs like VW, and you can buy a new one complete with switch for just £113.00 delivered to your door.

https://www.ebay.co.uk/itm/8TG-009-428-741-HELLA-V...

Like old Zephyrs with vacuum wipers, a lot of modern OEM's will pair the pump with a vac tank too, these are also cheap to buy and would give you full servo operation right from the get go...and even before that

https://www.ebay.co.uk/itm/Audi-A3-8P-A4-B5-B6-A6-...

A brand new Hella vane type vac pump and A3/Passat Diesel ball type vac tank are a compact pairing, and at £142 for both new OEM parts they have to be a much better value option than that clunky old diaphragm type pump from CBS (with no tank)... that'll likely come close to £240 once you've added postage!

[phazed]

Thanks for that Dave. Plenty to look into and think about. Good food for thought!

[ChimpOnGas]

phazed said:

Thanks for that Dave. Plenty to look into and think about. Good food for thought!

Keep us updated on your servo project Peter

[jojackson4]

Waved bye bye to the carbon can and the pipes that go with it


Hopefully found someone to balance the front pulley

[Tony91]

New Washer Bottle and pump fitted bargain only £9.97 delivered Ford Universal fitting.


Fitted


The metal bracket has the same hole location as the original but you need to space it out on 1cm spacers.
Snip the old connectors off and crimp on 2 bullet connectors Black wire I have as neutral- (black wire on pump) and colour trace as live+(red wire on pump)
The flexible filler hose to the top of the bottle has a blue spigot that goes into the bottle this had to be turned down on my lathe to fit the new bottle but only a small amount I would think a small amount of heat would allow the top to open enough for the spigot to fit but as I could machine it I did so.

[phazed]

That is the same bottle that I have just fitted to mine.
I replaced my original for this smaller bottle as I fitted a servo in the inner wing for the clutch.

[phazed]

Just finished fitting this air pump kit to the vacuum system on my car in the clutch servo circuit.



You get a rubber vaned pump, rubber mounts, relay block, Tee fitting, pressure sensing valve, (adjustable), Hose, wiring, connections and all connectors.

I managed to fit it all neatly in my offside inner wing.



I can't believe that total time go fit, pipe and wire took about 12 hours!

Ran car in the garage and first impressions are, IT WORKS!

I just need to road test it but it is pishing with rain ATM so, Later.

[Classic Chim]

phazed said:

Just finished fitting this air pump kit to the vacuum system on my car in the clutch servo circuit.



You get a rubber vaned pump, rubber mounts, relay block, Tee fitting, pressure sensing valve, (adjustable), Hose, wiring, connections and all connectors.

I managed to fit it all neatly in my offside inner wing.



I can't believe that total time go fit, pipe and wire took about 12 hours!

Ran car in the garage and first impressions are, IT WORKS!

I just need to road test it but it is pishing with rain ATM so, Later.

That’s the problem with management, always underestimate the time it takes to do a very fine job indeed by the looks of it