What's the difference between a ODB2 and OBD1 USDM H22 heads

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Aug 4, 2004 | 12:29 PM

Bird333

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What's the difference between a ODB2 and OBD1 USDM H22 heads

In particular, wiring differences? What sensors, connector shapes, location of sensors,etc are different between the two?

Thanks!

Aug 4, 2004 | 12:39 PM

Speedra500

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From: Huntsville, Al, US

Re: What's the difference between a ODB2 and OBD1 USDM H22 heads (Bird333)

i think the h22 and h22a4 heads are nearly identical... except the rocker arms on the h22a4 heads are slightly different than the h22a1 heads

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