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bob380sx
 Post subject: 20r/22r build
PostPosted: Thu Jan 21, 2010 12:28 pm 

Joined: Thu Aug 07, 2008 11:15 am
Posts: 40
Location: las vegas, NV
hi all im building a 20r/22r motor for my celica. i understand what all is involved with putting the 20r head on the 22r block. what i don't now is what the compression will be. im using 9:1 22r pistons. can someone tell me what the compression will be with the 20r head?
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bob380sx
 Post subject:
PostPosted: Tue Jan 26, 2010 12:26 pm 

Joined: Thu Aug 07, 2008 11:15 am
Posts: 40
Location: las vegas, NV
never mind the 20r head i have held onto all this time turned out to be a old 22r head with a 20r sticker or valve cover on it. :td:
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BigSteve
 Post subject:
PostPosted: Tue Jan 26, 2010 10:00 pm 

Joined: Sun Feb 01, 2009 5:10 am
Posts: 232
Location: Northridge, CA
20R has round intake ports, 22R has semi-rectangular ones. 20R has iron rocker arms, 22R has aluminum ones.
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bob380sx
 Post subject:
PostPosted: Mon Feb 01, 2010 4:16 pm 

Joined: Thu Aug 07, 2008 11:15 am
Posts: 40
Location: las vegas, NV
the 22r i have is equipped with iron rockers but lucked out and the head that turned out to be a 22r has the aluminum ones. i will be using them.
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