Quote:
Originally posted by qab5b
Starting off with a DET engine would make everything a lot simpler and most likely cheaper, because if you have to do a lot of machine work to a block, it can become decently expensive.
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Internally, they engines have almost no differences. The differences are piston coolers and sodium filled valves.
Please keep in mind that ky was talking about buying a DET and then rebuilding it. In fact, it would be cheaper to buy a DE core, rebuild
it and have the piston coolers and low compression pistons done at that time. The sodium filled valves are cool (no pun intended), but you can do just as well by getting the valve faces and the combustion chamber coated by Swain Tech. In the end, it would be a cheaper proposition I think. It would really depend upon how good a price you got the DET for vs how good a price you got the turbo components for.
For sure, if you are going to build an engine for over 300bhp, you would be better off financially starting with a DE. I've been through this several times with the SE-R mailing list. To get that kind of power you would have to change the turbo, manifold, injectors, and MAF. Anyway, this is really straying from the discussion.
If I were going to rebuild an SR20 that I wanted turbocharged, I'd probably start with a DE and find a used manifold, turbo, and injectors. You can end up with a better engine for the same or less money.
Quote:
Originally posted by qab5b
Just a side note, the ideal engine block to build a high-performance or race engine would have around 60,000 miles. It was found out in the 60's and 70's by some astute race teams (Penske was one, as was Donahue and the brillaint engineer that worked with him whose name I can't remember right now) that blocks with that many miles produce more relaible power. It has something to do with the way that the metal has aged and become stronger with all of the heat cycles.
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I am not
100% certain, but I think that only applies to cast iron blocks and not aluminum blocks.