4.2L AJ33S Engine
#1
4.2L AJ33S Engine
Hi I have a couple of questions about an engine in a 2003 XKR, that I am hoping someone can clarify for me. What is the difference between the AJ33 and the AJ33S? Is there a physical difference, (bigger crank journals, bigger block webbing, etc.) what I am getting at is would an AJ33 long block work in place of an AJ33S long block. Is the difference just that one is supercharged or does the supercharged engine have a stronger block? Thanks for any info you can share on this.
#2
Compression ratio is lower the n the S/C version, that's a big difference. There are some other more subtle things like the oil sprayers to cool the bottom of the pistons, or the VVT that the N/A engine has that the S/C doesn't.
The long (or short) block are not interchangeable if you are thinking of an engine swap.
The long (or short) block are not interchangeable if you are thinking of an engine swap.
#3
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