Interesting point but I'm not convinced. For example all the big and highly
tuned A-series engine make more power (peak power I guess) on a 45DCOE than
than a single HIF44. Also if the single carb idea worked for high rpm, high
power A-series engines than the racers would all be using a 48 or 53 DCO
modified for single barrel operation.
RS
In a message dated 19/06/02 17:38:38 Greenwich Standard Time,
RMueller@grumobile.uscg.mil writes:
> Actually, Vizard says its quite the opposite, that the movement of air
> through the single carb sort of sets up a "mini ram" effect from cylinder
> to
> cylinder that twin carbs don't have because the air isn't moving as fast or
> as often. I don't know, but it makes good reading!
>
> Bob
>
> -----Original Message-----
> From: RevdSpridget@aol.com [mailto:RevdSpridget@aol.com]
> Sent: Tuesday, June 18, 2002 2:59 PM
> To: esheffield@megapipe.net; androbus@yahoo.com
> Cc: midgetsprite@yahoogroups.com; spridgets@autox.team.net
> Subject: Re: what about a single 1.5 su?
>
>
> Although no-one says so, I would expect that at higher rpm the advantage
> swings back towards twin carbs because the ports are 'seeing' the big
> single
>
> so often it has hasn't seen one port before it starts to see another. What
>
> that rpm is I can't guess at but bet it is higher for a 998 than a 1275,
> 1380, etc.
>
> RS
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