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the SR replaced the CA due to:
A) It costs less to produce
=) end of story...
the CA is a stronger motor, has a iron block! and a timing belt!.. no stupid chains that are imposible to change.. and alloy blocks that warp if you try to get alot of power from them!.... not to mention the rocker arms!
The CA is a RB minus 2 cylinders. the Sr... well... is cheap and nasty!
atm i'm rebuilding my Mighty CA!. forged pistons, shotpeened + nitrided internals, port/polishing.. new other goodies =) turbo, intercooler and more.. looking @ ~300rwhp for my daily driver..
but depends how much you want to spend =) in terms of reliablitiy, go the ca. but if you want cheap power with little mods, go a sr.. but you wont get as much from a sr as you will a ca =)
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