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how does the blow through turbo setups work on these cars.... any info? any pics... and can the stock carb be used for this?
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How Could I Boost A 84 Hf? With Carb
Started by Jfab, Oct 10 2007 09:15 AM
5 replies to this topic
#1
Posted 10 October 2007 - 09:15 AM
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- Granny
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- Group: Members
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Drives: 97 ranger 83 trans am 93 firebird
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#2
Posted 10 October 2007 - 09:45 AM
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- R.I.P. Oct.27,2007...its not fair
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- Group: Members
- Location:North Carolina
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Drives: 1986 civic dx
do a search..this was a hot topic for a long time..but you can do it and it tells you exactky how on here.
money pit
#3
Posted 10 October 2007 - 12:14 PM
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- Dual Mikunis Rule
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- Group: 2011 Contributing Member
- Location:Utica, MI
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Drives: 1987 CRX DX, 2001 Subaru 2.5RS, 2004 Accord EX, 1983 Honda VT500FT
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Also search ELDO as a username, iirc, for boost related carb stuff, and other cool carb stuff...
"If Honda does not race there is no Honda." -Soichiro Honda
#4
Posted 11 October 2007 - 09:37 AM
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- Speedy
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- Group: Members
- Location:Pryor, Ok
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Drives: 71 chevy pu, 87 CRX DX"Pip squeek", 87 CRX DX "Pip Squeek II"
now that is a different setup how does that work exactly?
87 CRX DX, "Pip Squeek"
87 CRX DX "Parts Car"
86 CRX SI "Currently being built" DD
86 CRX DX "The Project" -(retired) - stripped
71 Chevy PU
81 Chevy PU
01 Dodge Ram 1500 (sold/traded)
97 Honda prelude DD
92 Jeep Cherokee "Slug" (parts)
91 Jeep Cherokee "Slug II"
92 Ford Probe GT Turbo: it blew up, got stripped, and then crushed....back to my CRX...What was I thinking...Oh yea it was free.
Ford........At least they circled the problem...
38 Desoto 2 door sedan (a project that I will someday get around to)
87 CRX DX "Parts Car"
86 CRX SI "Currently being built" DD
86 CRX DX "The Project" -(retired) - stripped
71 Chevy PU
81 Chevy PU
01 Dodge Ram 1500 (sold/traded)
97 Honda prelude DD
92 Jeep Cherokee "Slug" (parts)
91 Jeep Cherokee "Slug II"
92 Ford Probe GT Turbo: it blew up, got stripped, and then crushed....back to my CRX...What was I thinking...Oh yea it was free.
Ford........At least they circled the problem...
38 Desoto 2 door sedan (a project that I will someday get around to)
#5
Posted 11 October 2007 - 10:44 AM
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- Dual Mikunis Rule
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- Group: 2011 Contributing Member
- Location:Utica, MI
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Drives: 1987 CRX DX, 2001 Subaru 2.5RS, 2004 Accord EX, 1983 Honda VT500FT
-
Image Gallery
View Garage
From a simple Google search...
There are two types of choices in a carburetor turbo setup: “Suck-through” or “Blow through”. The Suck-through (or draw through) setup involves mounting the carburetor before the turbo inlet (usually in front of the impeller mouth). This means that both fuel and air are drawn into the turbo already mixed and then blown into the inlet manifold. This is by far the simplest way to set up a turbo, as the carburetor doesn’t need to be especially modified and tuning is quite easy. The main disadvantages are that you can’t use any intercooling with such a setup, as it is dangerous to run air/fuel mixture through an intercooler core. The reason for this is that fuel can condense inside the intercooler core and stay there – if you then have an engine backfire the intercooler can explode. As a result water injection is about the only option for cooling the charge air with this setup. This also corresponds to a blow-off valve because instead of just venting pressurised air, it would be releasing a fuel/air mixture which is very dangerous. The Blow-through arrangement, logically enough, means the carburetor is mounted after the turbo compressor, so the turbo only draws in air and then blows it through the carburettor, which adds the fuel. To use a carburetor this way it has to be specially modified so that the jets will still add the right amount of fuel. This means specially sealing the carburetor and pressurizing the fuel bowls to match the turbo boost. The good thing is than an intercooler and also a blow-off valve can be used with such a setup.
There are two types of choices in a carburetor turbo setup: “Suck-through” or “Blow through”. The Suck-through (or draw through) setup involves mounting the carburetor before the turbo inlet (usually in front of the impeller mouth). This means that both fuel and air are drawn into the turbo already mixed and then blown into the inlet manifold. This is by far the simplest way to set up a turbo, as the carburetor doesn’t need to be especially modified and tuning is quite easy. The main disadvantages are that you can’t use any intercooling with such a setup, as it is dangerous to run air/fuel mixture through an intercooler core. The reason for this is that fuel can condense inside the intercooler core and stay there – if you then have an engine backfire the intercooler can explode. As a result water injection is about the only option for cooling the charge air with this setup. This also corresponds to a blow-off valve because instead of just venting pressurised air, it would be releasing a fuel/air mixture which is very dangerous. The Blow-through arrangement, logically enough, means the carburetor is mounted after the turbo compressor, so the turbo only draws in air and then blows it through the carburettor, which adds the fuel. To use a carburetor this way it has to be specially modified so that the jets will still add the right amount of fuel. This means specially sealing the carburetor and pressurizing the fuel bowls to match the turbo boost. The good thing is than an intercooler and also a blow-off valve can be used with such a setup.
"If Honda does not race there is no Honda." -Soichiro Honda
#6
Posted 28 November 2007 - 10:47 AM
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- Granny
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- Group: Members
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Drives: 1986 crx "carbed"
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