Re: scirocco storm conversion

["Wm. Josiah Erikson" <josiah@gsinet.net>]

I had a similar problem when I put together my Rabbit GTi. Turned out that the
cam timing was off three teeth. Check your valve timing. I dunno, maybe it's
something else, but it's always good to check it.
    -Josiah

Ewan Hopkins wrote:

> I have an í85 UK Storm model, originally 1.8 k-jet.
> It has recently been upgraded with a ~50,000 ml. 2.0 unit sourced from a
> í92 Audi 80 2.0E.
>
> The donor car had an electronic Digifant fuelling but I retained my
> k-jet set-up.  I kept the audi inlet manifold because of the differences
> in the injector seats, compared with the old 1.8 unit, but put a
> 4-branch & performance exhaust on and the obligatory K&N filter at the
> other end.  Also swiss-cheesed  the air-box  to improve air-flow.
>
> Initial verdict was: marked improvement in low-mid torque but poor at
> the top-end ñ it wouldnít go beyond 5200rpm in top and pinked a lot
> beyond 4500 once warmed-up.
>
> Tried upgrading throttle body & warm-up regulator with ones from audi
> 2.2 5-cyl: not much difference.
>
> Tried disconnecting vaccuum advance from distributor & plugging hose, to
> see if it was over-advancing: This killed the acceleration, as expected,
> but made no difference to the pinking/lack of top-end.
>
> To my mind, this leaves four possible culprits, (assuming that it is not
> an ingition problem):
> Fuel pump, accumulator, injectors or fuel meter.
>
> I donít think it is the injectors as there were no problems before and
> the spray pattern looks OK. Not having easy access to a fuel system
> pressure tester, it is difficult for me to rule out any of the others.
>
> Any way of accurately testing the performance of the pump without a
> gauge?
>
> Anyone else done this or a similar conversion and had similar problems?
>
> Any other ideas?
>
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