There are reasons why we have fuel injection instead of
carbs on our new cars and one of them spells driveability.
The recommendation from manufactures of throttle bodies
is to go one size smaller if you replace Weber/Solex type
carbs. Here's a good FAQ link.
http://www.jenvey.co.uk/~TBins.htm
Thomas
Philip Erickson wrote:
> The TWM throttle bodies I have don't have venturies (no need) and therefore
> they are 44 venturies, much bigger than the 34s or even the early 37s used in
> "solexes". I was told they were good for 25 hp at the top end.
>
> The real improvement is in the low end as you stated, plus no worry about
> gaskets ;-),
>
> Phil
>
> Subject: Re: Engine Questions, just efi your u20
>
> One of the guys in our club Datsun Roadster Club of Western Australia
>
> (www.geocities.com/drcwa) has replaced the solex's with efi throttle
>
> bodies which just bolt on, and runs a wolf3d fuel computer. The car is
>
> very responsive (even from very low revs), and starts first kick, even
>
> when its cold (not that it is ever that cold here in sunny perth). Even
>
> though actual horsepower figures are probably not much higher than with
>
> carbies, it certainly makes a heck of a difference in the low rev range.
>
> Regards,
>
> James.
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