Originally posted by drift180
the blacktop has heatsink ridges on the front of the block and the redtop does not. The black top has oil squirters to cool the pistons. There are a lot of differences between the two but both are great engines. The s14 blacktop has variable valve timing but not the s13 blacktop.
the blacktop has heatsink ridges on the front of the block and the redtop does not. The black top has oil squirters to cool the pistons. There are a lot of differences between the two but both are great engines. The s14 blacktop has variable valve timing but not the s13 blacktop.
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