Q4 Viscomatic hoses (hydraulic lines)

Did you find a part on another type or make car that fits the 164? We love to hear about it!
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AlfaWhiz
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Q4 Viscomatic hoses (hydraulic lines)

Post by AlfaWhiz » Fri May 12, 2017 8:47 am

If anyone did replace his Viscomatic lines with new, rubber hoses, please post the details here.

I've been already in touch with Alfan, the goal is to provide a comprehensive replacement guide, i.e. what exactly has to be used for which hose, what length, DIN/SAE norm, fittings, etc.

As I'll be replacing my hoses soon, I'd appreciate your input. I'm sure it will be very beneficial for all of us to have this written down so that everyone can just order the hoses according to the description and replace them easily.

Looking forward to your input. Thanks.

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Alfan
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Re: Q4 Viscomatic hoses (hydraulic lines)

Post by Alfan » Sat May 13, 2017 1:35 pm

You can have a look in my photobook. This shows the hoses and how they are connected to the accumulator.

community/fotoboek/showalbum.php?album= ... ic%20hoses" onclick="window.open(this.href);return false;

I don't know why the latest added photos are upside down, but it should be possible to get some sense of it...
1994 Alfa Romeo 164 Q4 Proteo Rosso 550.000km
1989 Lancia Thema 8.32 Verde Indy 265kkm
2001 Alfa Romeo Spider 3.0 24V Blue Lightning 55kkm
2011 Alfa Romeo Giulietta Multiair TCT Bianco Pastello 140kkm
2015 Alfa Romeo 4C Rosso Competizione 85kkm

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AlfaWhiz
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Re: Q4 Viscomatic hoses (hydraulic lines)

Post by AlfaWhiz » Tue May 16, 2017 5:44 pm

I've had a quick look on ePER and also under the car and to be honest it's not obvious to me how to exchange all the hydraulic lines without dropping the Viscomatic and fuel tank.

Those of you who already went through it, how was it done? Any ideas?

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AlfaWhiz
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Re: Q4 Viscomatic hoses (hydraulic lines)

Post by AlfaWhiz » Mon Jun 05, 2017 8:32 am

Some news: if you are lazy, you can get all of the copper seals for the power steering and all Viscomatic lines via your Alfa dealer. They are still available. I've had 2 copper washers worth maybe 50 cents in total shipped from the Alfa warehouse in Italy. :D

I'll measure once I have a bit of spare time, so replacements can be ordered more easily.

Integrale evo
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Re: Q4 Viscomatic hoses (hydraulic lines)

Post by Integrale evo » Tue Jun 27, 2017 11:37 pm

When you use 6mm hose its possible to change out the hoses without taking down the fuel tank and diff. You get access to the connection via the fuel pump hatch under the back seat.

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Alfan
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Re: Q4 Viscomatic hoses (hydraulic lines)

Post by Alfan » Sat Jul 01, 2017 8:44 am

So putting hoses above the fuel tank instead of the original pipes is possible? Does it not restrict the flow to the 4WD system, as the hoses would have a larger outer diameter to have the same inner diameter as the pipes?
1994 Alfa Romeo 164 Q4 Proteo Rosso 550.000km
1989 Lancia Thema 8.32 Verde Indy 265kkm
2001 Alfa Romeo Spider 3.0 24V Blue Lightning 55kkm
2011 Alfa Romeo Giulietta Multiair TCT Bianco Pastello 140kkm
2015 Alfa Romeo 4C Rosso Competizione 85kkm

Integrale evo
Posts: 101
Joined: Sat Sep 18, 2010 6:08 am

Re: Q4 Viscomatic hoses (hydraulic lines)

Post by Integrale evo » Thu Jul 06, 2017 11:30 am

It was no problem to fit it above the fuel tank , think the hoses was 14mm outside and same mm inside as the originale pipes accept for one pipe line that was 5mm inside, I used 6mm there due to it was not possible to find 5mm pipe line. Function for almost 2 years now. But I dont remember all the details any more.

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