Editing Intake manifold
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==Overview== | ==Overview== | ||
− | + | The intake manifold is an important part of the induction system. Basically it connects the carburetor or throttle body to the intake ports of the cylinder head and in some cases like the small block and big block Chevy engine, it seals the lifter valley and provides a means of mounting the distributor and water neck. | |
− | But that is just the tip of the iceberg. The intake manifold design has a lot to do with how the engine will perform and | + | But that is just the tip of the iceberg. The intake manifold design has a lot to do with how the engine will perform and an radically influence the shape of the power band. Matching the intake type to the engine and vehicle specs is an important part of making a balanced combination, and the choice of what intake best suits the circumstances should not be taken lightly. |
==History== | ==History== | ||
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[[File:429 CJ Q JET INTAKE 2.jpg|thumb|left|300px|429 Ford factory Q-jet cast iron intake]] <br style="clear:both"/> | [[File:429 CJ Q JET INTAKE 2.jpg|thumb|left|300px|429 Ford factory Q-jet cast iron intake]] <br style="clear:both"/> | ||
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==Types of intakes== | ==Types of intakes== | ||
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[[File:Typhoon 52021.jpg|thumb|300px|Typhoon p/n 52021]] | [[File:Typhoon 52021.jpg|thumb|300px|Typhoon p/n 52021]] | ||
− | Professional Products makes a manifold of this design also, called the Typhoon, p/n 52021 for satin finish. | + | Professional Products makes a manifold of this design also, called the Typhoon, p/n 52021 for satin finish. The Power+Plus Typhoon Manifold is a high performance dual plane, 180° street manifold designed to be used with Holley, Carter AFB, or Edelbrock square bore carbs. For street applications use 600-700 cfm vacuum secondary carbs. For high performance street, use 700- 800 cfm double pumper carburetors. This manifold produces power comparable to some single plane manifolds yet retains the throttle response and drive ability typical of a dual plane. This manifold also features cast-in nitrous bosses with water outlets at all four corners plus dual distributor holddowns. This manifold is .70-inches taller than the PP-52000 or PP-52001. It has a provision to add an oil fill tube. No provision for exhaust heated or stock style chokes. Accepts late model waterneck, A/C, alternator, and HEI. Will fit cast iron bow tie heads and ‘87-’95 cast iron or aluminum heads. Will not fit under a stock Vette hood. This product can be found at https://performanceinjection.com/index.php?c=0&p=369 |
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Only because the Chevy V8 uses the intake bottom to seal the lifter valley is this considered to be an improvement. Other engine that use a separate plate to cover the lifter valley have had "air gap" intakes all along. But with the SBC engine, especially if using Vortec or aftermarket heads that lack a heat crossover beneath the plenum, the engine may tend to be cold-blooded until the intake comes up to temperature from engine heat. | Only because the Chevy V8 uses the intake bottom to seal the lifter valley is this considered to be an improvement. Other engine that use a separate plate to cover the lifter valley have had "air gap" intakes all along. But with the SBC engine, especially if using Vortec or aftermarket heads that lack a heat crossover beneath the plenum, the engine may tend to be cold-blooded until the intake comes up to temperature from engine heat. | ||
− | That means the Edelbrock Air-Gap intake will require a longer warm-up. In cold weather this can lead to | + | That means the Edelbrock Air-Gap intake will require a longer warm-up. In cold weather this can lead to driveability problems, almost like a tunnel ram. The air/fuel mixture- if tuned for a fully warmed up engine- will be lean until the engine is up to temp. This can be compensated for by the choke, but if using the choke, spirited driving is out until the choke is fully open. |
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− | + | ===Single plane=== | |
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− | ===Single plane | + | |
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|[[File:WEIAND 7546 001.jpg|thumb|450px|center|Weiand single plane p/n 7546.]] | |[[File:WEIAND 7546 001.jpg|thumb|450px|center|Weiand single plane p/n 7546.]] | ||
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[[File:CARB SPACERS WOOD Q-JET single.jpg|thumb|300px|left|Spacer made specifically to fit the Pontiac Performer intake. Spacer is upside down.]] | [[File:CARB SPACERS WOOD Q-JET single.jpg|thumb|300px|left|Spacer made specifically to fit the Pontiac Performer intake. Spacer is upside down.]] | ||
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===Also see:=== | ===Also see:=== | ||
*[http://www.hotrodders.com/forum/carb-spacer-163755.html Carb spacer] thread on Hotrodders forum. | *[http://www.hotrodders.com/forum/carb-spacer-163755.html Carb spacer] thread on Hotrodders forum. | ||
*[http://cms.nhra.com/dragster/1999/issue05/racing_technology.html Racing Technology Tuning with carburetor spacers] from NHRA.com | *[http://cms.nhra.com/dragster/1999/issue05/racing_technology.html Racing Technology Tuning with carburetor spacers] from NHRA.com | ||
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==Marine intakes== | ==Marine intakes== | ||
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==Fasteners== | ==Fasteners== | ||
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L30/L31 Vortec engines use fasteners made specifically for the plastic Vortec intake and intake gasket. To prevent over torquing the fasteners and crushing the intake gaskets, the bolts come with a longer shank having a non threaded bottom portion so as to bottom out before the gasket or intake sealing flange/bolt hole is compromised. Below the OEM bolt is on the left, an ARP bolt, right: | L30/L31 Vortec engines use fasteners made specifically for the plastic Vortec intake and intake gasket. To prevent over torquing the fasteners and crushing the intake gaskets, the bolts come with a longer shank having a non threaded bottom portion so as to bottom out before the gasket or intake sealing flange/bolt hole is compromised. Below the OEM bolt is on the left, an ARP bolt, right: | ||
[[File:VORTEC INTAKE BOLTS.jpg|thumb|left|]] <br style="clear:both"/> | [[File:VORTEC INTAKE BOLTS.jpg|thumb|left|]] <br style="clear:both"/> | ||
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==Gaskets== | ==Gaskets== | ||
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[[Category:Carburetors]] | [[Category:Carburetors]] | ||
[[Category:undeveloped articles]] | [[Category:undeveloped articles]] | ||
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