<VV> two two-barrels

[Mike Thomas]

Not just "small engines".  They were also used on Chevrolet 396's in 69 and 
Pontiac 400's for several years.

Mike
----- Original Message ----- 
From: <jwcorvair at aol.com>
To: <virtualvairs at corvair.org>
Sent: Tuesday, March 19, 2013 7:25 PM
Subject: Re: <VV> two two-barrels


>
> True, even old efi systems can work much better than carbs, particularly 
> in a system where the carbs are old and were not originally intended for 
> performance. These carbs are not much more sophisticated than our HVs, two 
> throats instead of one. These carbs were pretty common on quite a few GM 
> vehicles, everything from Vegas to Firebirds - just about anything that 
> had a small engine requiring minimal carburation. Several sites offer 
> information about tuning the 2CGs for racing, which is not the same as for 
> the street. The ubiquitous nature of these carbs got me wondering if 
> anyone had played with them.
>
> Now, back to our regularly scheduled thread about anitsneeze.
>
> Joe
>
>
>
>
>
> -----Original Message-----
> From: mike & bev mann <vair65 at sisna.com>
> To: Sethracer <Sethracer at aol.com>
> Cc: virtualvairs <virtualvairs at corvair.org>; FrankCB <FrankCB at aol.com>
> Sent: Tue, Mar 19, 2013 9:11 am
> Subject: Re: <VV> two two-barrels
>
>
> On 3/18/13, Sethracer at aol.com <Sethracer at aol.com> wrote:
>> How about a pair of TWM throttle bodies - replacing IDA  Weber 
>> 2-barrels -
>> non-progressive down draft models, with an EFI system to  limit the
>> air-speed damage of opening all throttle bodies together? Both a 
>> throttle
>> position
>> sensor and a mass airflow feed could be used. Hmmm. -  Seth
>>
> which is why i like my old (1986) aftermarket efi system which uses a
> center mount 4 barrel throttle body with 4 injectors and a air mass
> sensor on a turboed 140. the air flowing past the "hot wire" in the
> sensor controls the amount of fuel delivery. off of boost the delivery
> rate is much smaller than when on boost and it's all done
> automatically. while ic's and etc are much better than the resistors
> and capacitors that i have in the ecu it still works. there is a
> slight delay in the transition from off to on boost according to the
> fast monitoring system we use it's not long enough to cause a lot of
> harm and much faster than a water injection system can react. the
> throttle body openings are non progressive which doesn't seem to hurt
> a thing as the total fuel requirement is set by the amount of air
> going thru the air mass sensor-mike mann
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