(non-rocco) 85 GTI parts... Head swapping?

[peter@thescirocco.com (The Scirocco)]

---------- Original Message ----------------------------------
From: "Marc Peterson" <mpeters6@rochester.rr.com>
Date: Tue, 12 Mar 2002 18:11:18 -0500

>um...the 1.8 in your Jetta probably is a GX...which means that it 
is a
>basically a GTI engine with 38 mm intake valves rather than 40 
mm.   Simply
>tossing on the dual outlet manifold/downpipe is gonna net 
probably 5ish hp,
>with the restrictive intakes you will need a bigger cam to see 
much
>improvement.
>A 40 mm intake head...like the solid lifter JH or a hydro RD, 
coupled with
>that block *would* be a GTI engine.
>
>Marc

Definitely use the dual exhaust manifold and downpipe (if the '85 
came with it), depending on the year of the Jetta, you might want 
to use the cat also.

Don't forget, the GTI engine is a high compression engine, 10:1...

I'd recommend swapping in the whole long block.