Another option that might be looking at is converting the water pump to
a CVH one so it's driven off the timing belt.
Look for details on the ZVH conversion as this uses the CVH pump on a
Zetec block with an adaptor plate.
I know at least one silver top Zetec was fitted into a saloon with this
method, CVH alternator, CVH water pump and a V belt.
Jim
On 10/05/2020 11:30, 'JR' via Quantum Owners Group wrote:
Hi Mark
Thanks for your input.
As you say when using the BC/IB5 box (as I plan to) the problem area
is the crank pulley end. The blacktop water pump runs in opposite
direction to silvertop (anti clockwise instead of clockwise) so a
simple triangular belt drive config (crank water pump alternator)
spins the pump the wrong way. Most of the kit car builders solve this
by fitting one of the extra idler pulley kits which drives the water
pump off the back of the belt - but this solution obviously uses the
original type wide flat ribbed belt so engine width stays the same.
Reverse impellers/pumps are available for blacktop i.e. the pump
rotation direction is same as original but it pumps opposite way.-
these are not cheap but still less expensive than going the electric
pump route. So currently it seems he best way to go would be a simple
triangle belt config using a reverse impeller water pump and low front
mounted alternator (as per XR2) - all using V belt pulleys. Decent
engine mounts and a top stabiliser bar to bulkhead would hopefully
keep it all in place.
John
On Saturday, May 9, 2020 at 7:28:39 PM UTC+1, Mark wrote:
Hello John,
I've fitted a silvertop to a saloon & a blacktop to a 2+2 both
using the standard XR2 BC gearbox (front starter motor) Neither I
noticed seems to move the gearbox over to the inner wing area.
I had spoken to someone who started to fit a complete Focus Zetec
& 6 speed box to a 2+2 and he seemed to be finding that some major
mods where required to the subframe. He also said that you would
require bespoke driveshafts as the splines in the 6 speed are
different to the BC or IB5.
The main thing to think about with the blacktop is that the water
pump sticks out and is driven by the crank pulley along with the
alternator, so if changing the crank pulley for a 'V' one would
mean doing the same for the water pump. Alternator isn't too bad
if using CVH one.
My 2+2 was diesel powdered when I got it so doing the zetec
conversion required no subframe mods. I would imagine that the
saloon engine bay is sized similar to the 2+2 frame, therefore you
will either have to mod the inner strengthening or fit a V pulley.
I'm sure there is other info I could pass on, but hows this for a
start.
Mark
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