The Special K swap is the Holy Grail of Honda swaps at present, giving Civics from as far once more as the EF time of the early ’90s more uprooting and 21st century power and technology.
In countless cases its an indigenous movement for swap aficionados to likewise put a touch of boost in the mathematical statement. Turbo K cases are ample, but as the force ascents, the inefficiencies of a number of the stock parts can relinquish power and reliability. One of the major roadblocks is the intake manifold. A prevention at about 700 whp in manufacturing plant turbo Supras, stock intake manifolds can end up being a confinement in any vast-boost requisition, but taking a manifold composed for typically suctioned job and pumping huge boost just worsens the scenario.
Our dyno victim is a K-swapped ’96 Midori-shaded Civic. The K20A is pressurized by a Garrett
Golden Eagle Products has spoke to the issue for Special K fans with its enchanting assembled-from-billet huge-plenum manifold. Composed utilizing the most cutting edge CAD/CAM product for exceptional display and accuracy CNC-machined from 6061-T6 billet aluminum, the manifold gleams similar to a glimmering gem when you pop the hood. As a result of its uncommonly outlined runners and substantial plenum, the Golden Eagle manifold slaughters the stock setup in both rush and volume limit.
SpeedFactory is a Honda-driven shop placed in Tacoma, Washington, that helped in the R&D of the manifold. When SpeedFactory set out to test the irrevocable unit, we crashed the gathering.
This before/after observation vividly delineates the manifold’s bling consider. In any case as the d
A ’96 Civic running a turbocharged K20A2 fitted with the initial stock intake manifold and throttle form served as SpeedFactory’s test donkey. The auto’s turbo framework emphasizes a Garrett GT3071R turbo with a .48 A/R T3 compressor lodging, an a few-crawl downpipe, a couple-crawl fumes framework and an Omni four-bar guide sensor. Fuel enhancement comprised of Precision 1,000cc injectors and a Walbro 255-lph pump. The Honda was set to blaze E85 fuel. With this setup, the K20 baselined at 392.8 whp, with a progressive 10 psi.
The SpeedFactory group then introduced the Golden Eagle manifold and a 70mm throttle figure for the retest. Once more on the SpeedFactory Dynapack the Midori Green EG belted out some huge increases. “With the manifold update, it would have liked five to 10 degrees more VTC (cam point) on the towering cam, and made 15 to 25 whp more from 4,600 to 7,200 rpm,” SpeedFactory owner/tuner James Kempf expresss. “From 7,600 to 8,600 rpm it picked up a staggering 36 whp!… Flow is ruler.” Looking at top power, the K20 beat out at a whopping 429.4 whp when the manifold swap, with boost untouched and keeping enduring at 10 psi.
This before/after observation vividly delineates the manifold’s bling calculate. At the same time as the d
We were awed that the manifold indicated quite an impressive great seize quite an impressive moderate boost level. Assist, we were moreover inspired at how the mani indicated legit builds from 4,600 rpm on up even at level boost. Kempf is certain you could probably look for even more fantastic increases over a stock manifold at higher boost/power levels where the stock manifold could posture an even more terrific limitation. As sparkling as it seems to be, the marvelousness of the Golden Eagle’s K-progression manifold is far something greater than shallow, as it pounds out the power on the dyno—where it checks.