HI dear VTEC lovers!

Help me please to found info about deference between EDM H22A7 and JDM H22A Prelude Type S/S-Spec.

1. Why the Honda Company deinstalled variable intake geometry for H22A7?

2. Is valve seat degrees in H22A7 the same? (source 1)

3. Is valve on the intake side the same and and so on? (source 2)

Although in 1996 h22a shows 220ps vs H22A7 from 1998 212ps. (N.B. TorneoR 220ps. – it is improved H22A7).

Source 1: https://sun9-7.userapi.com/c853528/v...MwnjoQgW3Q.jpg
Source 2: https://sun9-56.userapi.com/c853528/...GKku3XW8GA.jpg
Source orig.: https://www.honda.co.jp/factbook/aut.../pr96-011.html

...
4. Accord Type R engine created otherone persons?

It is known that JDM TypeS/S-Spec creaters are Tadayuki Okita and Tsutomu Kishi. (エンジン開発担当：沖田忠之 and 岸　勉)
(In year 2001 Tadayuki Okita presented K-Series. Tsutomu Kishi went to raceing to judge).

But about H22A7 creation is no information.

Please help me.

Best regards!




Left - TypeR Accord and TorneoR.
Right - TypeS/SSpec