Brazilian Head Question? (8V)

[jdbubb at verizon.net (Dan Bubb)]

Well, the increase in valve sizes should improve performance so that's one reason to install it.
Course having a head laying around that can be installed when the old one takes a dump could be another reason.

There is the question of the front oil return. It's the bulge in the middle of the front of the head (front as installed in the car) and the oil return on a 1.8 head is too big and will overhang the front of the block on a 1.6 or 1.7.
So, that's something else to look at.
Your oil pressure sounds completely normal.
You should take pictures and post them someplace.
Dan

From: "Neptuno" <neptunonc@yahoo.com>
To: "Dan Bubb" <jdbubb@verizon.net>; "Scirocco-L" <scirocco-l@scirocco.org>
Sent: Monday, January 15, 2007 2:40 PM
Subject: Re: Brazilian Head Question? (8V)


> Why would anyone retrofit a hydro head into a 1.7? Only because of the Valve sizes? What would that do to the car in terms of performance? 
>   
>  I run a VDO 5bar gauge from volvo on the rocco, it registers high at start up nearing 5bar IIRC normal at start up. Then it levels of between 3-4bar mark at temperature and sustained speeds. When at idle or when the clutch is pressed the pressure will drop. I recall that being normal to.
>   
>  I will have to look at the outlet for the coolant and the cam bearings to see assert which type of head it is.
>   
>  EL Tony
>  
> 
> Dan Bubb <jdbubb@verizon.net> wrote:
>  It seems pretty unlikely the car was built with a Brazilian head since all Sciroccos were made in Germany.
> So the head would have been retrofitted.
> 
> Where is the coolant outlet? Between cylinders 1 & 2 or between 3 & 4?
> I believe that all the heads pre-1.8 had the outlet between 1 & 2 and would be small valve non-hydraulic heads, but I could be wrong on this.
> If it has the coolant outlet between 3 & 4 then it would be a later head which could be hydraulic or not, but that's easy to check because the hydraulic head only has 4 cam bearings.
> The good news is the later heads had 38 or 40mm intake valves vs. the 34 of the early heads.
> The bad news is if the head is hydraulic and the oil pump wasn't changed out you're probably running pretty low oil pressure.
> 
> Coolant outlet location and checking how many cam bearings it has will tell you hydraulic or not and give you a clue about valve size.
> Dan
> 
> BTW, you heard the joke about Pres Bush being informed that 3 brazilian troops had been killed in Iraq?
> After hanging his head in sorrow he finally looks up and asks, "How many is a brazilian?"
> Hahahahahaha!
> 
> From: "Neptuno" 
> To: "Scirocco-L" 
> Sent: Monday, January 15, 2007 11:49 AM
> Subject: Brazilian Head Question? (8V)
> 
> 
>> Now that you have gotten over the title! 
>> 
>> Ok something peculiar that I have always wanted to ask. I noticed that I have a head on my car that is stamped BRAZIL. That leads me to some speculation that I like you all to comment on.
>> 
>> 
>> 1) are all brazilian heads Hydro heads? (yes IIRC)
>> 2) 8v heads from brazil came in foxes but they turn to digifant on 90 (IIRC)
>> 3) Why would there be a Hydro head on a 1.7l
>> 4) pro's and con's if indeed there is a hydro head on a 1.7l 
>> 5) How do I tell the diference?
>> 6) That head does not belong to that 1.7l right? althougth there is a lot of overlap on 8v's I dont recall brazilian heads on german built 80's VW's
>> 7) recomendations, input?
>> 
>> Thank you all,
>> 
>> EL T
>> 
>> 
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