[urq] Cilminder heads .

[patrick.carlier]

Brandon ,

That's right ,  an MB ( MC , KV ) head on a WR bottom end .
It's true ,  there's one recess in the hydraulic head that doesn't 
correspond
to the WR bottom end . But that's what tig welding machines are for :) .
The head is amazingly easy to weld . Cast aluminium usually is .
So that's already taken care off .

The cam problem kinda surprised me .
I guess I'll just have to wait and see what the MB cam will do on the
WR with stock ignition .
If it doesn't perform teh way it should , I can still try to find a
short solid head WR cam . That ought to fit the MB head .

Pat




----- Original Message ----- 
From: "Brandon Rogers" <brogers at terrix.com>
To: "'p.carlier'" <p.carlier at pandora.be>; <urq at audifans.com>
Sent: Monday, October 06, 2008 6:36 PM
Subject: RE: [urq] Cilminder heads .


Hi Pat-
Not sure if I understood everything - but from what I could tell you're
thinking about using a MB head on your WR bottom end, correct?  IF so they
are not direct bolt on.  In the US at least , the MC heads require the
welding of I think an oil galley that does not line up to the WX /WR block.
The hydraulic lifter head that is a direct bolt on to a WX bottom end is a
KH (~'84/'85).  Crappy cam - I had a solid lifter cam reground and it had
good power.  Dennis G here in CO had/has a long 10V head he used for a
little while. Totally different cam, valve cover, gasket and dizzy gear than
the WX setup.  Yes NLA me thinks but he found the parts.

If I misunderstood something - apologies, otherwise HTH

Brandon

-----Original Message-----
From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On Behalf
Of p.carlier
Sent: Sunday, October 05, 2008 1:44 PM
To: urq at audifans.com
Subject: [urq] Cilminder heads .


Today , I found out that there are 3 different cilinder heads used on the
10VT ur-quattro's .

I have this 1981WR ( US- WX) wich was , let's stay pollite , severly
mistreated by its previous
owner(s)  . No choice but to take it all apart and start from scratch .

The solid lifters head must have been  taken off with a chisel or a
screwdriver .
Also found a piece of a bolt in one of the cilinders .
Severly scratched and bruised . Possably salvageable but not quite sure .
But then I have this brand new hydraulic head available , so I thought why
not use that one .

To my surprise the old head cam shaf doesn't fit the new head .
Further inspection showed that this old head is abt an inch longer then the
other ones I have availble  . I have both solid and hydraulic heads I can
compare with .
The dizzy lock nut is on the rear side of the head , between dizzy and
firewall and not between
the 5'th cilinder spark plug and the dizzy like I'm used to . Never knew
this .
Did some asking around , and I was told this kind of head was used until the
early 1982's .
Mine must have been one of the last ones .

So now I need to make a decision .
- Either try and rescue the solid lifters head .
  But I've heard hat the valve cover gasket is NLA , don't we love audi :))
.
- Or continue with the hydrualic head anyway , and use an MB/MC camshaft .
The MC head is all ready to go : machined , cleaned , new valve guides and
gaskets , new
   hydraulic lifters etc etc so I would prefer to use that one .

Is there any BTDT with the MC camshaft on an early UR-q engine .
Cam timing does alter engine caracteristics , and I have no idea if this MB
cam is gonna be for better
or for worse compared to the WR/WX . Ign and fuelling remain stock .


Pat
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