When did the 2.2L heads change to single exhaust ports?

subysouth · 09-05-2001, 01:33 AM

Can someone enlighten me? TIA

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SubyTechMaster · 09-05-2001, 02:10 PM

The 2.2L with a single exhaust port first appeared in '96. Primarily because CA emission 2.2L vehicles were classified TLEV (transient low emission vehicle) and received some other changes as well. The single exhaust port helps theh Cat. Convertor heat up to operating temp faster.

subysouth · 09-06-2001, 12:25 AM

I was curious, I have the 2.2L heads with the dual outlets. I think the 2.5L headers will fit my car. I'm hoping anyway.

09-05-2001, 01:33 AM	#1
subysouth Scooby Guru Member#: 5039 Join Date: Mar 2001 Chapter/Region: South East Location: Ocean Springs, MS Vehicle: 2007 Outback XT Grey 5-speed	When did the 2.2L heads change to single exhaust ports? Can someone enlighten me? TIA * Registered users of the site do not see these ads.

09-06-2001, 12:25 AM	#3
subysouth Scooby Guru Member#: 5039 Join Date: Mar 2001 Chapter/Region: South East Location: Ocean Springs, MS Vehicle: 2007 Outback XT Grey 5-speed	Thanks STM I was curious, I have the 2.2L heads with the dual outlets. I think the 2.5L headers will fit my car. I'm hoping anyway.

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09-05-2001, 02:10 PM	#2
SubyTechMaster Scooby Specialist Member#: 4423 Join Date: Feb 2001 Location: Placerville, CA USA Vehicle: '04 08 Tribeca, SVX Gold, Maroon	The 2.2L with a single exhaust port first appeared in '96. Primarily because CA emission 2.2L vehicles were classified TLEV (transient low emission vehicle) and received some other changes as well. The single exhaust port helps theh Cat. Convertor heat up to operating temp faster.