Re: Value of 3.0 12V

[George Graves <gmgraves@domain.elided>]

A good, low milage 12V 3-liter (especially one from a Milano) is worth 
anywhere from around $1200 to about $1600 but a super low milage engine 
or one which has recently been overhauled and blueprinted could be 
worth more than $2000.

The problem with the 24-valve is the fact that that  it came from a FWD 
car and thus must be extensively modified (the distributor must be 
moved, and an Alfetta oil pan must be fitted). The biggest problem that 
you are going to have is with the FI system. The 24-Valve engine uses 
Bosh Motronic, not L-Jetronic like the GTV-6/Milano. Since the intake 
runners and plenums were designed for a FWD car with the engine mounted 
laterally in the engine compartment, getting them to fit in the GTV-6 
with the engine turned around 90 degrees is problematical. The 
conversion that I have seen required that a 'U'- shaped aluminum inlet 
runner be fabricated so that the AFM can be placed beside the now 
longitudinally situated engine (although I have heard that some people 
have punched a hole in the firewall to let the stock straight runner 
stick through it and into the glove-box where the AFM and conical air 
filter are re-located!). There are other engineering problems as well. 
The 24-valve 3.0 Liter Alfa engine, with its dual overhead cam design 
is taller than the 12-valve. This means that it will NOT clear the 
stock GTV-6 brake booster. The fix for this, I've been told, involves 
replacing the stock brake booster canister with one from a Spider, 
which is smaller in diameter. What modifications to clutch and brake 
actuators this requires, I do not know. I also do not know what the 
effect (if any) there is to the GTV-6's braking performance. But I do 
know that after one shoe-horns this engine into the GTV-6, that one 
cannot reach the oil filler cap because it ends up UNDER the 
aforementioned brake booster due to the FWD layout of the original 
engine configuration (in the FWD 164, the oil filler is on the 
right-hand side of the front bank of cams. When the engine is rotated 
to the left by 90 degrees to put the output shaft of the engine toward 
the rear of the car, the oil filler ends up on the left rear of the 
engine -and right under the brake booster. It is possible to close-off 
the factory oil filler in the valve cover, and cut another one on the 
other side, but I don't know what that entails beside some aluminum 
welding. There are probably more pitfalls to such a conversion, but 
I've just seen it done, and have not done it myself. The expert is 
probably Larry Dickman Jr. of Alfa Parts Exchange in Tracy CA. He's the 
one who's conversion I've been describing, and these pitfalls were the 
ones explained to me by him. If you are determined to go this route, 
I'd contact Larry first were I you. I hope this helps.

George Graves
'86 GTV-6
now with 3.0 liter 'S' engine
and Power Steering


On Wednesday, March 12, 2003, at 07:42 PM, alfa-digest wrote:


> Date: Wed, 12 Mar 2003 16:54:51 -0800 (PST)
> From: Zamani Zambri <zzambrimail@domain.elided>
> Subject: Value of 3.0 12V
>
> I wonder how much a 3.0 12V is worth these days? I am thinking of
> putting in a 3.0 24V in my car. I will run Autronic. That should give
> me about 260 bhp with stock internals, and possibly Beninca headers.
>
> The 3.0 12V has good valve guides and seals (done in 2000), new main
> and rod bearings, colombo 104.294 cams, SZ headers, 37mm intake
> runners. If I include the S-pistons (not installed) would $3K be a good
> price? Should be good for 230 bhp (if you run Autronic).
>
> Anyways, not sure what the plans are. I could put in a 2.0TS with a
> turbo (irresistable with a few TS engines sitting in the garage).
> Hmmm.....
>
> Zamani
> Yahoo! Web Hosting - establish your business online
> http://webhosting.yahoo.com
George Graves
'86 GTV-6
now with 3.0 liter 'S' engine
and Power Steering
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