Tech:Engine/K Series/Intake manifolds: Difference between revisions

From Rollaclub
Jump to navigation Jump to search
No edit summary
(No difference)

Revision as of 14:30, 27 December 2010

Intake manifolds for 3k / 4k

From what I know there are basically 4 different OME inlet manifolds for a 3/4 k that support single carby. Bigport (30mm) with bent runners. (Runners shrink in size in between head and plenum) Bigport (30mm) with straight runners. (Runners stay consistent in size and feed 2 to 1 then 2 to plenum) Mid port (27mm) with bent runners. (Runners stay consistent in size and feed 4 to 1) Small port (25mm) with bents runners. (stock) The bigport with straight runner has other issues, It's plenum area is small you could hog this out, and it does not support a dual exhaust manifold so any HP gains in the inlet will be lost in the exhaust, you could get around the exhaust issue with extractors.

Here's some pix to tell the story.

Common small port as we all know and love.

caption


Midport I suspect these are on 4k and later but now sure.

caption


Common bigport.

caption


Early biport I think.

caption


Bigport straight plenum area.

caption


Bigport straight runner sizes.

caption


Bigport straight note exhaust triangle is 180 deg out.

caption


Bigport straight exhaust manafold.

caption

Taken from http://www.rollaclub.com/board/topic/44925-bigport-manifolds-for-3k/page__view__findpost__p__468972



Article by Andy43 / Towe001



Back to K Series

Back to Main Page

Rollaclub