I have had it with used/ reman turbos, so I pose the question of which new turbo to buy. I had really good service from the PDR HX35 I had on my 91, and had it not been 20deg high when I sold the truck, the turbo would be on my 92 now. BUT....... I saw on PDR's website the PowerMaster turbos for $100 less than the PDR HX35. It has a 16cm ex housing, 66mm impellar, and a/r ratio of .7
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Longevity and quality aside, and strictly from a performance standpoint, is the latter too much turbo for my current fuelling? I have 120cc, hit a peak boost of ~32psi boost, and EGT in the red. I MIGHT get some bigger injectors this summer, and I may not. If I can hit 20mpg with my current setup, I may stick with it. I like the 4" ex outlet of the PM turbo, and with the housing being smaller than my stock H1C, and the impellar being a good deal bigger, I wouldnt think overall spooling would be too bad, though it may not spool as fast as a H1C-12. I do a lot of intown driving, but would give up some MPGs in town for a couple on the highway. ( I can drive to my mom's house in a weekend and drive more miles than I do in 2-3wks intown). Keep in mind I have a .020 over head gasket, so more air is better, and the 4" ex outlet would help in that regard as well.
On the flip side, the PDR HX35 is a known quantity, and though it cost more, the quality and life expectancy are not questioned. Bad thing is, I'll still have my big 18cm housing (for now). I also wont have to do any exhaust work to get it in there- literal bolt in. The impellar side is smaller, but I know it would fit my current set up. If I get some bigger sticks, I may be in the market for a bigger turbo before I want to spend the money again. Then I'd be out $700 for the turbo.
Aw shucks, I hate BOMBing at times. But knowing that I can outrun some of the newer trucks is worth it at times.
Daniel
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