Quote:
Originally Posted by Hotter
I have asked xHP support if 320i N43 gearbox will work:
So it seems that 6HP21 HW#7591971 320i N43 should be suitable too.
Should I completely trust them?
I will ask them does torque converter differ if the gearbox would be from N52.
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Very interesting! I'd been going by some tables of gear ratios I'd found floating around, but perhaps I've been misinformed. The 6HP21 parts catalogue
here only lists a single set of ratios, so seems like you're right.
The torque converter is definitely going to be different. Mechanically, I don't think the N46 converter will bolt up to the N52 flywheel. As for lockup and other characteristics, I can't say for sure.
This catalogue lists ZF part numbers for torque converters (unfortunately only for US), and there seem to be lots of variants. You could also check part numbers on RealOEM.
Perhaps you could use a torque converter from early 6HP21 (late 2006)?