Go Back   Chevy Cruze Forum - Chevrolet Cruze > Engine and Performance | Cruze Forumz > 1.8L DOHC Ecotec I4

1.8L DOHC Ecotec I4

1.8L (LUW) -- Intake Manifold

This is a discussion on1.8L (LUW) -- Intake Manifold within the 1.8L DOHC Ecotec I4 forums, part of the Engine and Performance | Cruze Forumz category!

138HP | 123lbft 1.8L DOHC Ecotec I4

LinkBack Thread Tools Display Modes
Old 09-09-2011, 12:49 PM   #1
Senior Member
70AARCUDA's Avatar
Join Date: Jul 2011
Location: Tucson, AZ
Posts: 431
Default 1.8L (LUW) -- Intake Manifold

The 1.8L (LUW) engine uses a 2-stage intake "resonator" manifold.

From the GM literature:

"The Ecotec 1.8L’s two-stage variable intake manifold optimizes fuel economy and performance. At engine speeds below 4,000 rpm, inlet air passes through 35.8-inch-long (910 mm) intake tracts that help increase torque. At speeds greater than 4,000 rpm, a rotary sleeve within the lightweight composite intake manifold closes off the full length of the intake tracts, forcing air through a shorter, 10.2-inch (260 mm) path that helps build horsepower."


below 4,000 rpm = 35.8" (910mm) intake tract...for torque.
above 4,000 rpm = 10.2" (260mm) intake tract...for horsepower.
2014 Toyota Prius 1.8L (2ZR-FXE) eCVT <--new!
2009 Pontiac Vibe 1.8L (2ZR-FE) 4A
2004 Pontiac Vibe 1.8L (1ZZ-FE) 4A

1971 Dodge Charger 318 3A
1970˝ Plymouth AAR 'Cuda 340/6BBL 4M
1968 Dodge Charger 383 3A
1967 Plymouth Barracuda Formula·S 383 4M
1965 Plymouth Barracuda Formula·S 273 4M
70AARCUDA is offline   Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -5. The time now is 09:14 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0