Tech lover, nazi hater.

  • 17 Posts
  • 88 Comments
Joined 1 year ago
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Cake day: June 11th, 2023

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  • A quick search shows no OEM 4-1 headers BUT I did find the exhaust ports are larger than other H22 so a proper exhaust manifold is needed for the higher output.

    This site lists the features of the different H22 engines. Here is what they say about the H22A:

    There are two versions of H22A for JDM Honda: H22A Redtop and H22A Blacktop. – H22A Redtop has a red valve cover. This is the most dynamic out of all H22 engines, it was installed in Honda Prelude Type S and SiR S-Spec, and in Honda Accord Euro R. It boasts 220 HP @ 7,200 rpm and 221 Nm @ 6,500 rpm. The H22A Redtop engine has dome pistons, which increases the compression ratio to 11. A new intake manifold, a 62.5 mm throttle body, improved exhaust manifolds, and 57 mm exhaust system are used here as well. Light head porting was made in factory conditions, and the cylinder head was fitted with sports camshafts. Here are the H22A cam specs: duration 306/310 deg, lift 11.91/11.12 mm. For the H22A Euro R engine (JDM Accord), a different intake manifold was developed.


  • Nice find on the H22 Type S! This might explain the headlights. The may be JDM.

    Since someone spent a few bucks you may have some other hidden gems. I believe the B-series had an available 4-1 exhaust manifold instead of the standard 4-2-1. The H series may have this too.

    Does it have LSD? Easy way is to check is drive hard. You can always check the stamping on the trans but that is not 100% reliable. People often mixed and matched pieces to make their perfect ratios.

    I read the previous post about the PS pump delete. People used to make sure there was fluid in the rack and then loop the input and output. This keeps the rack clean and lubed allowing for easy reversal.

    Finally, people often use bondo for fixing interior plastic.

    Keep us posted!