I can't see any issue with using the 40DCOE/32 choke set up with the cam that
you have. And you shouldn't need a big compression increase with a 260 degree
cam. Should work well. The progression circuit can be a weak spot as you can
get a slight hesitation that can be difficult to eradicate. The more recent
models have four progression holes instead of three to alleviate this issue.
Mine only have three, I should have got the model with 4, (dumb!), however at
the moment I do not seem to have any progression problems.
Forget to mention that when I got the car it had NGK 7 series plugs. I found
that these were too cold for just road and hill climbs and tended to oil up a
little. I switched to NGK 6 series and I find the car runs better.
Derek
I think there is a big misconception about Webers
On 14 Dec 2013, at 21:22, Wilko2 <e-wilkins@cox.net> wrote:
> That sounds like a lot of fun, and a real racing car. Mine's a BN6 and I'm
> building the 3000 engine.
>
> What I'm theorizing is that for all around road use that I will get great
> results in the driveability and still maintain good top end performance
with
> my setup using the 40DCOE with 32mm chokes instead of the 45s with bigger
> chokes. As with the same issue using the 12 port head on the stock 100 Six
> engine (2.6 liters) there isn't enough gas velocity to get low speed torque
or
> horsepower with the bigger carbs and ports. The problem of coughing seemed
to
> go away with the 3000 (according to Geoffrey Healey and others). Weber
> recommends (and many cars like the Alphas, ferrarris and such do quite well
> with) a 40DCOE/32 chokes on 500cc chambers as a good benchmark--why should
a
> Healey need 45/35 for the same chamber? Sure that would be great for top
end
> breathing, but for normal driving the added velocity of the smaller chokes
> should give the progression circuit a much needed boost.
>
> I'm thinking that all (most) of the complaining of the Webers being too
much
> for the car and you lose street performance with them should go away with
the
> smaller carb.
>
> Can you tell I really want to have that Weber "mojo" in my car?
>
> I don't yet know what my actual compression ratio will be be as my head was
> planed lightly (I don't remember how much) but my chambers were softened
> around the sharp edges. I've never CC'd them but do expect a slight rise in
> compression.
>
> Other mods that I have that will affect performance are the ProRace
balancer,
> alloy back plate, Bill Bolton lightened flywheel, Toyota Trans kit, spin-on
> oil filter, and Monza exhaust.
>
>
>
> On Dec 14, 2013, at 12:35 PM, Derek Job wrote:
>
>> Rick
>>
>> My car is a 100-Six but it has a BJ8 engine. When I bought the car it
> already had a lot of nice goodies on it, including:
>>
>> -
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