Group,
Well...stumbled into another question. I have now realized that there are

two

turbo versions for the Turbo II (or at least I think there are) Series 4

and

Series 5. I have one of both and it looks like the Series 5 turbine housing

is

a bit more robust. The compressor externally appears to be the same.

Thoughts,

insights, comments?
Thanks
Dean Head

Series 5 is head and shoulders above series 4.  Series 4 cracks frequently
and series  5 cracks way less often. Less often in fact than the
series  6 or what every they call the third gen over there.

Paul Lamar

Paul,
I agree 100% after looking over the series 5.
Dean

BTW here is a tip I think. The stock series 5 exhaust
manifold, when it does crack, cracks right here.
I would take a die grinder and radius these knife edges.

Paul Lamar
 
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