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| Revision as of 23:51, 18 August 2016 ddgonzal (Talk | contribs) (->Stock Manifold) <- Previous diff |
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| [[#Top-hatted Carburetor]] on stock manifold | [[#Top-hatted Carburetor]] on stock manifold | ||
| - | <br>{{Album|21572}} | + | <br>{{Album|10474|jpg|400}} |
| [[#Boxed Carburetor]] | [[#Boxed Carburetor]] | ||
| <br>{{Album|2253}} | <br>{{Album|2253}} | ||
| - | Tuned-port Intake | + | [[#Log Manifolds]] |
| + | <br>{{Album|4862}} | ||
| + | |||
| + | [[#Tuned_Runner_Length|#Tuned-port Intake]] | ||
| <br>{{Album|661}} | <br>{{Album|661}} | ||
| - | Log manifold | + | = Stock Manifold = |
| - | <br>{{Album|4862}} | + | [[Turbo#Draw-through_or_blow-through_turbo_systems.3F|Blow-through]] or [[Turbo#Draw-through_or_blow-through_turbo_systems.3F|draw-through]] systems can use the stock [[Intake Manifold]]. |
| + | |||
| + | Draw-through | ||
| + | <br>[http://datsun1200.com/modules/mediawiki/index.php?title=Turbo#oan78 http://datsun1200.com/uploads/photos/10476.jpg] | ||
| + | |||
| + | Blow-through with carburetor hat | ||
| + | <br>{{Album|526}} | ||
| + | |||
| + | Stock manifold with EFI throttle body | ||
| + | <br>{{UploadPost|6746_551625dbea3e4.jpg|465360}} | ||
| + | |||
| + | Blow-through | ||
| + | <br>[http://datsun1200.com/modules/mediawiki/index.php?title=Turbo#oan78 http://datsun1200.com/uploads/photos/10474.jpg] | ||
| = Log Manifolds = | = Log Manifolds = | ||
| - | Log manifolds can either be fed by an EFI throttle body or by a sidedraft carburetor. | + | A log manifold is a cylindrical plenum type with individual runners to each cylinder. Log manifolds can either be fed by an EFI throttle body or by a sidedraft carburetor. They can be used with either blow-through or draw-through systems. |
| Log Manifold | Log Manifold | ||
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| <br>[http://datsun1200.com/modules/mediawiki/index.php?title=Turbo#slam1024 http://datsun1200.com/uploads/photos/21918.jpg] | <br>[http://datsun1200.com/modules/mediawiki/index.php?title=Turbo#slam1024 http://datsun1200.com/uploads/photos/21918.jpg] | ||
| - | Draw-through | + | Draw-through with very small plenum |
| <br>[http://datsun1200.com/modules/mediawiki/index.php?title=Turbo#rice http://datsun1200.com/uploads/photos/9809.jpg] | <br>[http://datsun1200.com/modules/mediawiki/index.php?title=Turbo#rice http://datsun1200.com/uploads/photos/9809.jpg] | ||
| Line 47: | Line 62: | ||
| Optimum runner length vs RPM | Optimum runner length vs RPM | ||
| <br>{{PhotoPost|intakerunnerlength.jpg|408161}} | <br>{{PhotoPost|intakerunnerlength.jpg|408161}} | ||
| - | |||
| - | = Stock Manifold = | ||
| - | [[Turbo#Draw-through_or_blow-through_turbo_systems.3F|Blow-through]] or draw-through systems can use the stock [[Intake Manifold]]. | ||
| - | |||
| - | Draw-through | ||
| - | <br>[http://datsun1200.com/modules/mediawiki/index.php?title=Turbo#oan78 http://datsun1200.com/uploads/photos/10476.jpg] | ||
| - | |||
| - | Blow-through with carburetor hat | ||
| - | <br>{{Album|526}} | ||
| - | |||
| - | Stock manifold with EFI throttle body | ||
| - | <br>{{UploadPost|6746_551625dbea3e4.jpg|465360}} | ||
| - | |||
| - | Blow-through | ||
| - | <br>[http://datsun1200.com/modules/mediawiki/index.php?title=Turbo#oan78 http://datsun1200.com/uploads/photos/10474.jpg] | ||
| = Top-hatted Carburetor = | = Top-hatted Carburetor = | ||
| Line 96: | Line 96: | ||
| Boxing the carb allows a more or less stock carb to be used, the outside pressure balancing the inside pressure. Special non-crushable fuel floats are needed. | Boxing the carb allows a more or less stock carb to be used, the outside pressure balancing the inside pressure. Special non-crushable fuel floats are needed. | ||
| - | Inside the box | + | {{Album|2249}} {{Album|2253}} {{Album|535}} |
| - | <br>{{Album|535}} | + | |
| - | + | ||
| - | {{Album|2253}} {{Album|2249}} | + | |
| [[Category:Forced Induction]]{{End}} | [[Category:Forced Induction]]{{End}} | ||
Revision as of 00:05, 19 August 2016
Intake manifolds for a Turbo engine. For more airflow, a higher flowing carb, intake, heads (ports and valves) and exhaust system is beneficial. Supercharging will increase power on a stock engine, but increasing the airflow capability of the engine will bring your blown engine to its full potential.
Contents |
Overview
A15 Turbo using factory Twin Hitachi sidedraft manifold
#Top-hatted Carburetor on stock manifold
Stock Manifold
Blow-through or draw-through systems can use the stock Intake Manifold.
Draw-through
Blow-through with carburetor hat
Stock manifold with EFI throttle body
Blow-through
Log Manifolds
A log manifold is a cylindrical plenum type with individual runners to each cylinder. Log manifolds can either be fed by an EFI throttle body or by a sidedraft carburetor. They can be used with either blow-through or draw-through systems.
Log Manifold
UM-1 Manifold
Ram plenum manifold
clyon's A-series Turbo Manifolds
This kind of stock manifold-runner is limited in horsepower. The turbo can force more air through it (for more HP) but the air temp will escalate, limiting the power to be made.
Corolla manifold adapted
Draw-through with very small plenum
Tuned Runner Length
For scavenge effect at 5000 RPM, the runners should be 20" long!
Optimum runner length vs RPM
Top-hatted Carburetor
Feeding the carburetor via a top hat was a popular OEM method. phunkdotaspok say the stock Hitachi can handle 10 psi with a good top-gasket seal. In an NA application, a warped top is not a problem, as there is no pressure in the float chamber. This only becomes important in boosted application.
Blow-through system feeding carb top-hat
Weber 32/36 Carburetor with custom top hat
downdraft Dellorto carburetor on custom manifold
Good for 10psi
Twin Sidedraughts
Blow-through
Boxed Carburetor
Blow through works well. The main reason to use this over a draw-through is so an intercooler can be used. The boxed carburetor can take more boost than the top-hatted carburetor.
Boxing the carb allows a more or less stock carb to be used, the outside pressure balancing the inside pressure. Special non-crushable fuel floats are needed.
