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Autovac.

Technical issues not related to a DLOC car marque, eg tyres, ethanol, other car makes, etc. and legal, political and insurance
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Stan Thomas
Posts: 642
Joined: Sat Feb 13, 2016 2:14 pm
Location: Penkridge. Staffs.

Autovac.

Post by Stan Thomas »

I have read on the internet that because modern petrol has a lower specific gravity than older fuels, there is a tendency for it to be drawn into the suction pipe and thence to the inlet manifold as to put it crudely, it can "splash around" more easily inside the canister - and for which a quite expensive modification is available.

Given the change in specific gravity must be small, does anyone have any views on the subject insofar as the modification is necessary, or has anyone had the modification done? Or has anyone experienced petrol being drawn into the inlet manifold etc.???

Regards to all,

Stan Thomas.

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marchesmark
Posts: 306
Joined: Tue Feb 09, 2016 8:02 pm

Re: Autovac.

Post by marchesmark »

Hello Stan,

I've owned 2 cars with Autovacs, both mid Thirties. I never had the slightest issue with modern fuels in either car, and I think a properly restored Autovac will be as reliable as a mechanical or electric pump.

Mark

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captain bobo
Posts: 206
Joined: Tue Feb 09, 2016 7:32 pm
Location: Kimbolton, Cambs

Re: Autovac.

Post by captain bobo »

I regularly drive a 1921 Leyland bus which has a 4 cylinder 5 litre engine with fuel delivered via an Autovac. We've used several different types of modern petrol including Avgas (long story) but have had no problems whatsoever since commissioning it. So far it has used approximately 400 gallons of fuel, no hiccups with the Autovac.
Best wishes, Dave B

Stan Thomas
Posts: 642
Joined: Sat Feb 13, 2016 2:14 pm
Location: Penkridge. Staffs.

Re: Autovac.

Post by Stan Thomas »

Thanks for the advice lads.

I want to keep the car original for posterity - but don't know the difference between an Autovac and Kim Novac.

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marchesmark
Posts: 306
Joined: Tue Feb 09, 2016 8:02 pm

Re: Autovac.

Post by marchesmark »

They're still in business,so this link should be useful.

Mark

http://www.autovac.co.uk/

Fossil
Posts: 453
Joined: Sat Feb 13, 2016 5:08 pm
Location: Helensburgh, Argyll

Re: Autovac.

Post by Fossil »

I think Kim Novac is more voluptuous, and she drove James Stewart to madness, but died in the process.

I know nothing about Autovacs either.

Geoff

Christopher Storey
Posts: 300
Joined: Wed Mar 16, 2016 6:40 pm
Location: Cheshire

Re: Autovac.

Post by Christopher Storey »

I do hope that they are in fact still going : the business was offered for sale due to ill health , in an advertisement in The Automobile last year ( 2017)

Stan Thomas
Posts: 642
Joined: Sat Feb 13, 2016 2:14 pm
Location: Penkridge. Staffs.

Re: Autovac.

Post by Stan Thomas »

They are still "up-and-running" - as I spoke to them only a week ago for parts.

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