Lamborghini Talk banner
1 - 20 of 23 Posts

·
Registered
Joined
·
18 Posts
Discussion Starter · #1 ·
The clutch master cylinder of my Urraco can not be repaired anymore.
It is 7/8" (22mm) in diameter. I can't find a replacement in this diameter, only a 3/4" (19mm) one. Does anyone know if this one is strong enough to work the clutch on a Urraco or does it has to be a 7/8" one. If so does anyone know a replacement (from other car) for it.
 

·
Registered
Joined
·
3,104 Posts
If you take the smaller one, the clutch will not separate completely.
I had a similar problem in my Jalpa, wanted to replace the clutch slave, they used an Alfa clutch slave and sleeved it for smaller diameter.
If you take a smaller master you have the same problem, too less brake fluid will be moved to release the clutch-plate...
did you already try www.lineaveloce.com ?

Have also a look at this page, almost at the bottom:
http://www.jalpa.ch/Problems/index.html
 

·
Registered
Joined
·
3,104 Posts

·
Registered
Joined
·
18 Posts
Discussion Starter · #5 ·
That is not possible anymore with my master cylinder, rusted inside. So I don't have to try the 19mm one you think?
Maybe Instinsky from Stutgart has something. I think I will give him a call.
 

·
Registered
Joined
·
3,104 Posts
When the rust is not too bad it can be honed, I'm not a mechanic therefore I cannot tell you if it's possible with yours...
Did you try to find another at a alfa/fiat vintage specialist?

Who was the manufacturer of your master cylinder? Benditalia?
 

·
Registered
Joined
·
18 Posts
Discussion Starter · #7 ·
It is rusted pretty bad and can not be overhauled anymore according to a specialist. The car has been standing stil for a long time, couple of years.

The alfa and fiat garages need the type of car where it is used in otherwise they can't do anything for me, they say. Do you know a car where a simular is used in? That would help a lot.
 

·
Registered
Joined
·
3,104 Posts
With the part number and the manufacturer noted on the cylinder you should be able to find the other cars.
Keep in mind, no manufacturer produced clutch cylinder exclusively for Lamborghini!

I will ask my garage if he has one in stock, stay tuned, tomorrow evening I should know more.

Martin B. what is your experience with your Silhouette?
 

·
Registered
Joined
·
3 Posts
We got a replacement slave cly at GT Car Parts.. hardly took any time and wasn't really bad priced.. I'd have to find the paperwork but seems to me it was under $100
Chelle
 

·
Registered
Joined
·
3,104 Posts
chelle29 said:
We got a replacement slave cly at GT Car Parts.. hardly took any time and wasn't really bad priced.. I'd have to find the paperwork but seems to me it was under $100
Chelle
Chelle, the problem is, he searchs a master not the slave...
 

·
Registered
Joined
·
3 Posts
ooops.. my mistake.... though I would swear I have seen someone on ebay selling that too... I'll check my notes on all this stuff when I get home
Chelle
 

·
Registered
Joined
·
3,104 Posts
Like I mentioned earlier, I think it was linea veloce...

They sell also the clutch cyl for the Espada/Jarama but are quite on top with their prices.
 

·
Registered
Joined
·
1,462 Posts
I personally feel the "resleeved" cylnders are a better value. They come with new seals, they haven't been sitting on a shelf for 20 yrs, the bores are in stainless or brass and do not corrode easily, and the bores are honed (smoother).
 

·
Registered
Joined
·
6 Posts
Urraco Master Cylinder

Hi Raymond, I had mine overhauled in the UK, along with the brake master cylinder the companies name was J+L Spares here in the UK contact no. (0)1706 644210 ask for Mike he is highly recommended he even helped put right work done on my Servo's I had commissioned before I became aware of him.
If he can't repair it (and its always worth a second opinion) he will find a suitable replacement, dont know where our friend with the Urraco is but Mike goes to a lot of the european fairs Essen etc to pick up work from continental restoration companies, I understand he also does all the restoration work for the Ferrari UK importer if they get something they can't handle.
J +L originally meant Jaguar and Lotus but he has expanded into many other marques inc Astons etc.
from what I have learnt over the last few years I would not hesitate to call him.
Martin
 

·
Registered
Joined
·
3,104 Posts

·
Registered
Joined
·
18 Posts
Discussion Starter · #18 ·
Thanks for the reply's guys.
Yesterday I talked to a guy who prepares racecars and oldtimers about my problem and he should know what he is talking about. He said that if you change the size of the master cylinder you have to change the slave cylinder to, so you get the same fluid displacement again and the clutch will work. If you work with 2 different sizes the displacement of fluid is not enough and it won't work at all. So this sounds logical to me. And if the master cylinder is in this bad condition the slave cylinder will probably be the same. He can change the slave cylinder for me and and get a new master cylinder for a nice price. This would be the best solution for the future to, because newer cars have the 3/'4" (19mm) cylinders to and that would make getting new parts a lot easier. So I think I will try this.
I will let you know if it works out.
 

·
Registered
Joined
·
275 Posts
this explanation makes sense to me. The original Bonaldi master cylinder on the Urraco has a bore of about 22mm, replacements that are offered everywhere only have 19mm. does anyone know the bore of the slave cylinder?? and what bore the now offered slaves have???
 
1 - 20 of 23 Posts
Top