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 Post subject: Re: engine
PostPosted:Thu Jan 09, 2014 5:21 pm 
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Big Block
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Joined:Sun Jan 13, 2013 7:00 am
Posts:1158
Car Details:1986 Camaro, bought into Spain by me in 1993.
305 replaced by a 355, 750 Demon carb, RPM AirGap intake, Brodix heads, Hedman Hedders, 3" Flowmaster exhaust.
Wheels are Summit aluminium 5 spokes, tyres are 245 rear 225 front BF Goodrich.
B/M transmission, battery relocated to the rear, GoodMark 4" cowl steel hood.
Location:Spain East Coast
Now THIS is a carb, and a mighty fine one too. :clap: :clap:

Image

And this is the hole it dumps fuel through. :clap: :clap:
Image


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Re: engine

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 Post subject: Re: engine
PostPosted:Thu Jan 09, 2014 7:22 pm 
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Small Block

Joined:Sun Sep 15, 2013 7:06 pm
Posts:21
thanks for the pics that helps so in the 1st picture do you put a air clearner on top of the throttle body


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 Post subject: Re: engine
PostPosted:Thu Jan 09, 2014 8:15 pm 
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Big Block
User avatar

Joined:Sun Jan 13, 2013 7:00 am
Posts:1158
Car Details:1986 Camaro, bought into Spain by me in 1993.
305 replaced by a 355, 750 Demon carb, RPM AirGap intake, Brodix heads, Hedman Hedders, 3" Flowmaster exhaust.
Wheels are Summit aluminium 5 spokes, tyres are 245 rear 225 front BF Goodrich.
B/M transmission, battery relocated to the rear, GoodMark 4" cowl steel hood.
Location:Spain East Coast
Yes.
Image


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 Post subject: Re: engine
PostPosted:Thu Jan 09, 2014 8:28 pm 
Offline
Small Block

Joined:Sun Sep 15, 2013 7:06 pm
Posts:21
thanks again you have help me loads the tbi and tpi is all new to me im normally a good old carb man


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 Post subject: Re: engine
PostPosted:Tue Jun 24, 2014 1:22 pm 
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Big Block

Joined:Sun Jul 25, 2010 3:40 pm
Posts:206
Location:Roswell New Mexico
Just to add to this post.
TBI was introduced as an almost direct replacement for the carb, simple economics when you are building cars. The throttle linkage, fuel supply and wiring harness don't have to be moved much to fit a TBI.
But the drawback with TBI, and a carb, is that it's almost impossible to get the same petrol air charge equally into each cylinder. Imagine pushing down on the pedal which will open the butterfly and put more fuel into the airstream. Unless the intake runners are the exact same length one or more cylinders will get fuel before the others, plus it takes a finite time from pressing the pedal for fuel to leave the injectors, mix with the air and travel to the intake valve.
Now move onto TPI. The only thing in the intake system is air, and the fuel is injected directly into each cylinder negating any of those problems.
And this is before we get to the problems of carbs and TBI systems where fuel vaporization relies on pressure and temperature.

Hope it made sense because it's 6 am here and I've only had one mug of coffee :yawn:


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