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Honda H22 Engines

 
H22 was the first engine from H-Series family. All H22 were equipped with VTEC, Dual Over Head Cam (DOHC), belt-driven four-valve-per-cylinder head with PGM-FI multi-point injection system and a distributor ignition system. Using 87mm bore and 90.7mm stroke all H22 engines were displacing 2156cc.
 
H22 made its debut with JDM Prelude Si VTEC in late 1991 as H22A. H22 has evolved during its life span. Starting from 1994 all H22 have recieved a special lining on cylinders blocks named FRM (Fiber Reinforced Cylinder Wall)FRM is a thin yet very strong lining material. FRM is inserted into the cylinder casting when molded. After the casting is cooled, the cylinder block is bored, leaving a thin lining material on the cylinder wall. Results are very tough cylinders that can put up with extreme conditions. In 1997 H22 engines recieved another major update, closed deck short blocks were replaced with open deck ones.

Honda H22A Engine

 
Total of 9 versions of H22 engines were produced. They were named, H22A (this code for used two different engines), H22A1, H22A2, H22A3, H22A4, H22A5, H22A7 and H22A8. Besides the major updates mentioned above, these versions were slightly different from each other with their compression ratios, cam profiles, and intake-exhaust ports.
 
The last and the most powerfull version of H22 was again named H22A. This version was used in JDM Prelude Type-S , JDM Prelude SiR S-Spec and JDM Accord/Torneo Euro-R. It was produced between 1997-2001. JDM H22A had 11.0:1 compression pistons, a ported head, larger throttle body, wilder camhafts, a low restriction intake system and improved exhaust. With 217hp output, H22A was the most powerfull version of H22 engines as well as entire H-Series engines. The red valve cover was the distinctive mark of those engines.

 

 

The production of H22 engines ended along with production of Honda Prelude in 2001.

 

Model

H22A - H22A8

Displacement (cc)

2156

Power Output (hp)

185 - 217

Compression Ratio

10.6:1-11.0:1

Bore (mm)

87.0

Stroke (mm)

 90.7

VTEC

YES

Years Produced

1992-2001

 

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