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Originally Posted by Casper
Its just the Head and VCT mechanism. The block and everything else is the same on all the AU I6 engines.
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Ok, so the head on the VCT is shaved or whatever? What are the compression ratios of each? Actually, that's a lazy question, let me grab my owner's manual. (fetches manual)
Righto, all have 9.65:1.
Power figures are quoted as.
157kw HO164 VCT168 XR6 VCT172
This sound about right everyone. I wonder what the figures were in the real world and how much difference could be seen between say 5 VCTs or 5 HOs. Anyone have an idea?
Here's something though, no mention of HP high performance, just HO high output. These are the same yeah?