Toymods Car Club Inc: Tech & Conversions => 21r and 22r simialities and differnces

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ViPeR_NiPPleX
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VIC, Sth Frankston.
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July 2003

Re: 21r and 22r simialities and differnces	Tue, 11 May 2004 08:41

Ahh, my kinda question Okay, there is a few things i better clear up. There is an early and a late version of both. The early 21/22R head doesnt have the bolt holes for the EFI manifold. So beware Also the early head has open combustion chambers and round exhaust ports. In Australia, we got the early 21R-C and the late 22R-E. The late 22RE head is much different. The main differnce is the closed combustion chamber. So unless you want to drop your CR something seriously low, I dont recommend swapping heads. The height of the block on the late model I believe is shorter. The majority of items that bolt onto the front will not swap between early/late. Also in Australia, the 22R-E got the analog EFI setup with the late style head/block. So changing to a proper EFI setup can be a bastard with all the vacuum hoses/emissions gear + the vacuum/centrifugal advance dizzy. For a turbo motor, I recommend using the 22R-E. It has a lot of aftermarket support in the US. Primarily www.lcengineering.com If you want more pics on 22R turbo stuff, I have millions. Done shitloads of research. In the end, found out that 4 valves are better than two and two cams are better than one. Hence the 3S-GTE SA63. Cheers, James Nicol [Report message to a moderator]

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