Not very familiar with the Webers, does yours have an accelerator pump? If
not, that may be the reason. Those of us in the Colonies have easy access
to 4 bbl carbs, Holley, Carter, Edelbrock, these have an accelerator pump
that gives an extra shot of fuel when you flatten the go pedal, which
makes a big difference. Traditional American intake manifold perhaps gives
better fuel distribution along with the 4bbl carb.
Ted S., where are you??
Jim Stuart
P Burgers wrote:
> Some time back I posted a query to the list about cam problems I was
> having with my Rover V8.
>
> The end of the saga was this:
>
> I suspected that the machine shop had taken too much off the heads
> when they skimmed them - this turned out to be so....
>
> Not only that, when they recut the valve seats, they were a bit
> over enthusiastic on cylinders 7 and 6 [opposite sides] and cut the
> seats very deep on the exhaust valves.
>
> When we put the beast back togehter and checked the valve lift
> individually [sheesh 16 valves!!!] we found:
>
> Number 6 28 thou excess lift on the exhaust valve, number 7 the same.
> all other valves 4-6 thou. excessive lift.
>
> result was the valves weren't closing properly, some lifters were
> bottoming put and bending rods, and the thing ran like a dog.
>
> we fitted a set of adjustable rods and set the pre-load so that the
> lifters wouldn't bottom out and bend the rods. Engine now runs
> sweetly.... sort of!
>
> Carbie is a Weber 38DGAs with 160 mains, CO level is running at
> about 2% on 3000rpm. The engine just doesn't give you a nice shove
> in the back when you boot it. Manifold is a standard Rover with the
> tower machined off. Thoughts are that the machinist didn't do a good
> job and somehow has altered the flow characteristics of the manifold.
>
>
> Any comments, or advice on jetting etc.???
>
> Peter B
> Cape Town
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