Re: Eurospec long block I5 engines

[ScottyCBoy@aol.com]

In a message dated 98-05-27 15:23:04 EDT, you write:

<< 
 The Eurovan block is 5/8" taller than our Audi's. It has a 95.5 mm stroke
 and rods that are about 15 mm longer. To install one of these you will have
 problems closing the hood on a 4kq and perhaps need a custom down pipe for
 the exhaust. The cam in the Eurovan was designed for low end grunt and the
 CR is only 8.5:1. 
 
 For performance you may want to use the Audi I5 block with the 95.5 crank,
 the standard 144 mm rods (though you may have some problems with journal
 sizes and I can't remember if it is piston or crank side) and the pistons
 VW tuners used with the old 94.5 mm stroker cranks. This will bring the
 piston tops an extra 0.5 mm higher in the cylinder effectively raising the
 compression to over 11:1 with 10:1 pistons. So you will be checking piston
 deck height and either trimming a small amount of material off the tops
 and/or have a quality head job done and unshroud the valves to increase the
 combustion chamber volume. You will run a knock sensor and forget turbo
 unless you find some pistons for a lower CR.  With an NA motor (done
 correctly) you could look at an easy 180 hp (if there is enough fuel) and
 with the right cam 200 + hp at a higher rpm ...say about 6300.  Or, for
 less money you could buy and install an MC & chip for an easy 200+ hp. >>

All this is true the rod journals on the eurovan are the size of the Audi 5
cylinder turbodiesel.  The late eurovan motors code AAF had a 10.0 compression
ratio.  Wrist pin diameter of the eurovan is 24.0mm.  The eurovan block is not
suitable for turbo use as it sits because there are no oil jets installed
underneath the pistons.  The canadian diesel eurovan engines had these
installed but they are impossible to find.  A water outlet on the back of the
block has to be added if a heater is to be used.  An earlier 5 cylinder head
will bolt up to the Eurovan block provided the head bolt bores are enlaged to
the eurovan's 12mm headbolt size.  The rear most oil drain hole in the block
has to be plugged.  A late model 5 cylinder head will fit but some
modifications are required.  Due to the height of the block a 20V head will
not clear the hood on a 4000Q.  I have gotten my 2.5 liter tall block to clear
everything though...

Scott