Quote:
Originally Posted by guitaraholic
I don't have a total weight, but I have heard they are considerably lighter, for two reasons.
1 - The turbine is made from Titanium, and is about half the weight of a standard turbine. so you are saving a few pounds with that.
2 - The exhaust housing is this steel versus thick cast iron. So you are saving weight again.
I have heard that the B1 series (6258 & 6758) weigh in at 12lbs,, which is very light. If the aluminum housing saves 2lbs,, and the 7163 is part of their B1 series, then it should be around 10lbs,, which is quite a bit lighter than say a 3071 (say 10lbs or more?)
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1. The turbine wheel weight difference is probably on the order of maybe 50-150 GRAMS...
2. The TiAL housing on a Garrett is quite a bit lighter than any Garrett housing, and likely as light as any EWG housing on the EFRs.
I think a GT2871R weighs around 15 lbs last time I weighed one, so 12 lbs sounds possible for a small frame turbo. If the 7163 came in at sub 10 lbs for an EWG version that'd be pretty awesome. It might even sway me a bit that way...
BTW - Treadstone has some interesting EFR investment cast EWG housings. Nothing on their site for the 63 mm wheel, but I imagine it's just a simple machining change to accommodate it.