I couldn't decide whether to post this in power adder forum or here so if you mods want to move it be my guest. Now what I was wondering was what considerations do you have to take when you are building an engine to take a turbo or supercharger? Is it just about the same for both or different things for both? I don't expect you to tell me how to build an engine or anything in this post, but any website/book recommendations are welcome.

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1992 RS 3.1
1985 POS (SC 2.8 CFI)

 

A well built motor specifically set up for forced induction has the turbos/sc scale matched to the motors cubes,demand,rpm... I can't egt into detail here because I'm not fully sure on how they figure the efficiency or the 'curve' of the PSI's..

I do know low ratio pistons (forged) with a wider ring gap are req'd for serious boost. Also there's a trick of drilling two counter-secting holes into a main to rod oil passage and directing it toward the bottoms of the pistons and putting a sized orfice there to spray oil on the bottoms for cooling. Also for more serious street strip blown apps I hear of "multi-stage" EFI where you run cheap pump gas in normal driving conditions, but at WOT, a secondary system kicks in to supply either methanol, race gas, or water (to reduce/eleminate detonation).

Forged cranks, pistons, and the best of the bottom end is a good direction, as is aluminum heads and the proper cam.

Just staying out of detonation is the important part.