The problem is air flow. The air has to:
1. come in the air cleaner
2. make a 90 degree turn down
3. go through the carb, pick up fuel
4. make a 90 degree turn forward and back
5, make another 90 degree turn toward the engine.
6. enter the head and through the valves.
Compared to an SU, with stock air cleaners:
1. Come into the air cleaner.
2. curve through a 90 degree turn into the carb.
3. go through the carb, pick up fuel
4. Go in the head and through the valves.
Also, 1.5 in is 38mm.
Get your car on a dyno, and see.
I'll bet, at best, you'll get the same, making all else equal.
Larry Daniels wrote:
> ----- Original Message -----
> From: "Rick Lindsay" <rolindsay@yahoo.com>
>
> <SNIP>
> The last engine I rebuilt was a
> '76 Midget and it ended up with a NEW DGV. It went
> from hard-to-start and poor performance to starting
> and running fantastic! But remember, a pair of sweet
> SUs is still a better setup.
>
> rick
> '70 MGB Split-bumper Tourer - with sweet SUs
>
> --------------------------
>
> Let's not forget that the Weber now comes in a 38/38 non-progressive version
> in addition to the old 32/36 progressive. I doubt that the stock SUs would
> have any performance advantage over the 38s.
>
> Larry Daniels (with a 38/38 equipped B)
> _______________________________________________
> ptrmgb@gmail.com
>
> Edit your replies
>
> Mgs@autox.team.net
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