ZR-1 Net Registry Forums - 90 Heads and IH's on our 91

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Shrek

01-04-2012 11:37 AM

90 Heads and IH's on our 91

Based on photos in this thread http://www.zr1.net/forum/showthread....ighlight=valve The heads and IH's on my wife's Z are 1990 style.

http://i446.photobucket.com/albums/q...1/DSCN1366.jpg
http://i446.photobucket.com/albums/q...1/DSCN1365.jpg

sammy

01-04-2012 12:08 PM

Re: 90 Heads and IH's on our 91

did the previous owner have the inj housings and plenum ported?????

Shrek

01-04-2012 12:11 PM

Re: 90 Heads and IH's on our 91

Quote:

Originally Posted by sammy (Post 130267)

did the previous owner have the inj housings and plenum ported?????

NOPE! She was a virgin when I cracked her open for injectors last year.

A26B	01-04-2012 02:52 PM

Re: 90 Heads and IH's on our 91

That's not particulary surprising, knowing the story behind the change. It was essentially a change to reduce machining and therefore cost. There was probably an inventory of engines already at BG when the change was implemented at Mercury.

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