F550 water hose fail after "Water-Pump-Tuning" - Ferrari Life
 
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post #1 of 7 Old 05-29-2014, 02:52 AM Thread Starter
 
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F550 water hose fail after "Water-Pump-Tuning"

I just want to tell you all to be carefully, if you want to make a better cooling for the 550. I changed the water pump for a capristo pump which have an other rotor - not bad. further i installed a belt pulley of the F612, which is smaller and the pump is running faster. After 500 KM the water hose under the air intake manifold ruptured.
I ordered at "Ricambi America Inc" a Silicon water-hose-set - I hope it's good enough for the higher pressure at the cooling System.


Have someone experience with this hoses?


Many Regards Chris

Last edited by darnaut; 05-29-2014 at 02:53 AM. Reason: Forgot something
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post #2 of 7 Old 05-29-2014, 03:38 AM
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Quote:
Originally Posted by darnaut View Post
I just want to tell you all to be carefully, if you want to make a better cooling for the 550. I changed the water pump for a capristo pump which have an other rotor - not bad. further i installed a belt pulley of the F612, which is smaller and the pump is running faster. After 500 KM the water hose under the air intake manifold ruptured.
I ordered at "Ricambi America Inc" a Silicon water-hose-set - I hope it's good enough for the higher pressure at the cooling System.


Have someone experience with this hoses?


Many Regards Chris

Hello Chris,
the water hose under the air intake manifold was the original delivered with the car or you have changed it in past, because those original delivered pieces was an critical point of 550M.
The pressure on cooling system is controlled by a valve inside to the water filler cap, this pressure is about 1-1.2 bar.
Probably your hose was near the rupture, the new waret pump arrangement has icrease the water flow, probably the pressure is increased but little ....
Sure the silicon pipe will be good!
How is new temperature range of car, the thermostatic valve is ok ? Did you have see improvement?

Regards
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PRESENT: 575 F1 HGTC ROSSO CORSA 2004' - MB CLS 350 CGI 2007'
PAST: 550 ROSSO CORSA 1998' - MB CLK 240 2002'
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post #3 of 7 Old 05-29-2014, 05:52 AM
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Chris, as Fabio has said, those hoses under the intake manifold are one of the common failure points in the 550's cooling system.

The hoses you have purchased are made by/for Scuderia Rampante Innovations (SRI), a company owned & run by a Ferrari expert, and specialising in developing products of the highest quality to eliminate well known problems in these cars.

So you made a good choice, but be sure to change all the coolant hoses in the system, even the smallest ones that serve to deaerate the system.

I've made similar cooling system modifications as yours, only with the stock pump (I changed the impeller to the later 575/612 version, and also used the smaller pulley) In my case however, these modifications didn't help my cooling system problem, which was overheating at idle in traffic.

Just FYI, the modification that finally sorted my overheating issue was switching from a 50/50 antifreeze/water mix to a nearly 100% pure water setup, with the necessary anti-corrosion additive package. The pure water setup has the ability to remove 25-30% more heat from the engine than the antifreeze mix, so it has restored some of the lost efficiency in the system. My current plans to address the longterm underperformance of this system include installing a higher capacity radiator and more powerful fans. Hopefully these mods will allow me to return to an antifreeze/water mix, which will give the system the needed freeze protection, which the pure water setup does not.

'99 550, Rosso Corsa / Nero, S/N:114654, Assy: 31836, Engine: 52084

High mileage, low compression, and missing on a few cylinders.....just like my cars.

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post #4 of 7 Old 05-29-2014, 06:33 AM
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John,
the 550 that i had, had a following range temperaure:
- drive over 70/80 km h - 70 C
- drive over 70/80 with fully gas - 85C
- drive slow, 20/40 km h - 95/105 C
I think the cooling system is not designed to queues drive (mistake), i not know how the 550 go on hot country like Dubai ....

Fabio

PRESENT: 575 F1 HGTC ROSSO CORSA 2004' - MB CLS 350 CGI 2007'
PAST: 550 ROSSO CORSA 1998' - MB CLK 240 2002'
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post #5 of 7 Old 05-29-2014, 08:50 AM
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Chris- I will chime in and agree it is almost certain your new waterpump had little or nothing to do with your plenum hose failure. A known 456 and 550 weakness, three of the plenum hoses (out of 5) were replaced with silicone hoses on the 575M. SRI's hoses will cure the problem and those are even better than the 575 silicone hoses.

Taz
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post #6 of 7 Old 05-29-2014, 11:34 AM Thread Starter
 
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Hello all together!

@Fabio: what i knew from the history of my car is, that it seems to be the original hose from 1999 - so it's 15 years old...
The water filler cap and the thermostatic valve are also new since my winterservice - but i have done something new in my System - i made a venting System, that meens, i copied a System here in this Forum, but i don't know anymore who it was? it's a connection from the thermostatic housing to the water fluid Reservoir to get the air out of the System.

I totaly agree with your experience about Speed/watertemperature - i have the same but i don't like this Situation and want to reduce the temperature to 90 when i 'm driving slow or stop and go in the city


@cribbj: I'm glad that it is a good choice (unfortunately an expensive one :-( ) but i replace all hoses!
I agree with you - the Problems with the temperature were not sorted out with all the modifications - i also think the only way is to change the Radiator....but your awareness with the water/antifreeze mix is very interesting - i will also try this way.

@tazandjan: that sounds good :-) so i hope i have no Problem like this any more with water hoses

many greetings to all Chris
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post #7 of 7 Old 05-29-2014, 04:52 PM
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Quote:
Originally Posted by darnaut View Post
i made a venting System, that meens, i copied a System here in this Forum, but i don't know anymore who it was? it's a connection from the thermostatic housing to the water fluid Reservoir to get the air out of the System.


@cribbj: I'm glad that it is a good choice (unfortunately an expensive one :-( ) but i replace all hoses!
I agree with you - the Problems with the temperature were not sorted out with all the modifications - i also think the only way is to change the Radiator....but your awareness with the water/antifreeze mix is very interesting - i will also try this way.

many greetings to all Chris
Chris that vent line modification was an idea from my partner Dave (aka Ferraridriver). Both his car & mine now have it, and we think it's a very effective way to auto-purge air from a high point in the system.

Try the pure water (actually reverse osmosis purified drinking water) solution, along with an anti-corrosion additive package and see how you like it. It brought my system under control, whereas before, if I let the car sit and idle on a +30C day, the coolant temps would slowly climb to 110C, and at that point I would have to shut it down. Now the temps don't rise over 100C, even when the ambient is 38C.

I like the anticorrosion products from No-Rosion Products Home Page, but I'm sure you can find quality products on your side of the pond.

'99 550, Rosso Corsa / Nero, S/N:114654, Assy: 31836, Engine: 52084

High mileage, low compression, and missing on a few cylinders.....just like my cars.

Maranello Skunkworks Team Member
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