oadamo
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| posted on 14/4/07 at 09:10 PM |
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twin 40s with a turbo
hi ive seen a few turbo cars running twin 40s with turbos are they standard carbs or do you have to seal them cus on the net some sites say you do and
a few say that you dont have to. and have you got some for sale that are sutible for turbo that are a reasonable price i can pay buy paypal thanks
adam
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rayward
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| posted on 14/4/07 at 09:24 PM |
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pretty sure the ones for use on turbo engines have sealed throttle spindles, may be difficult to do on non turbos ones.
hth
Ray
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oadamo
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| posted on 14/4/07 at 09:28 PM |
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do you no if you could convert the standard ones. its hard to find anything on the net. i cant find a complete guide just bits of info
adam
[Edited on 14/4/07 by oadamo]
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owelly
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| posted on 14/4/07 at 09:34 PM |
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I think you can put the carbs in a sealed box and balance the air pressure with what the turbo is making. I could be wrong......
http://www.ppcmag.co.uk
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rayward
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| posted on 14/4/07 at 09:50 PM |
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yep that would work,
pretty sure some jets/airways need soldering up too, and maybe some drilling out.
is there a specific reason you want to use 40's?
would be a lot simpler with a home made planum, and a single body.
Ray
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oadamo
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| posted on 14/4/07 at 09:57 PM |
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i just want to use carbs ive got a mk2 escort with a 2l pinto in and i dont want to spoil the looks of its so i was thinking turbo it with twin 40s. i
was just thinking that when you open the bonnet it would look right
[Edited on 14/4/07 by oadamo]
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thomas4age
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| posted on 14/4/07 at 10:14 PM |
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Ditch the jets and solder the holes up, weld 4 injector bosses on the underside of the runners to the head after the throttle valves (ie out of
sight). put a megasquirt on it and just use the dcoe throttle valves as ITB's
new seals in the throttle shafts should be tight enough to put some boost on <7psi otherwise take them out and put proper bearings in them.
I have seen this on a supercharged honda civic (really old one) once.
grtz Thomas
If Lucas made guns, Wars wouldn't start either.
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oadamo
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| posted on 14/4/07 at 10:30 PM |
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quote:
Originally posted by thomas4age
Ditch the jets and solder the holes up, weld 4 injector bosses on the underside of the runners to the head after the throttle valves (ie out of
sight). put a megasquirt on it and just use the dcoe throttle valves as ITB's
new seals in the throttle shafts should be tight enough to put some boost on <7psi otherwise take them out and put proper bearings in them.
I have seen this on a supercharged honda civic (really old one) once.
grtz Thomas
thats a good idea that is .you would never no its there till you had a good look i could hide the ecu in the car under the dash or somthing thanks
adam
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Nick Skidmore
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| posted on 15/4/07 at 07:30 AM |
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There is a discussion of this in Vizard's Mini book.
2 options
1 suck through with standard carbs with obvious effects on mixture heat etc.
2 use dellorto's from Lotus Esprit turbo that were 'specials' for blow through use, or copy the mods from those carbs on to your
standard atmo ones.
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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britishtrident
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| posted on 15/4/07 at 02:16 PM |
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A bit pointless using DCOEs this way , Not really a sensible thing to do these days, if you are going to supercharge /Turbo either use fuel injection
or use suck through using a simpler single big carb.
DCOEs are worth money don't butcher them. Either buy suitable throttle bodies or adapt an standard efi intake sytem -- you can even use
manifolds off other engines for example the complete Rover 2 litre M16 Turbo inlet assembly can be fitted to Ford Zetec and CVH heads and can flow
enough air for well over 240 bhp power outputs.
[Edited on 15/4/07 by britishtrident]
[Edited on 15/4/07 by britishtrident]
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thomas4age
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| posted on 17/4/07 at 05:11 PM |
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Jus be sure to post pictures if you go this route. that would be some "wolf in sheeps clothes" install
grtz Thomas
If Lucas made guns, Wars wouldn't start either.
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