BW converters

C

chris varming

Member
Harvey Quote: The thing to watch out for is that you make sure it's not a BW66 converter, as that will fit, but won't work
Harvey, how can I find out the difference between a BW66 converter from the BW65 - I have 6 converters and one of them is from a BW66 but they look alike? it will be a disaster if I fitted the wrong one.. - I guess it will be possible to fit a BW66 to my P6? Regards, Chris Varming
 
The difference between the 65 & 66 as far as the converters are concerned is the size of the input shaft. The one on the 66 is much bigger, so a 65 converter physically won't fit on to a 66 box, but if you put a 66 converter on a 65 box, then you won't get any drive as the too small input shaft on the 65 won't be engaged with the splines in the converter.

I made myself a little tool from an old input shaft, (in my case for the most part it was so I could check to see whether 35 box converters were suitable as there are two different splines on those as well, one is the same as the BW65, the other, which is the same diameter but with less splines is AFAIK, used with the smaller diameter converters) so if you have an input shaft handy you can use that. If you insert it into the converter you will feel it engage on the splines. If you don't, and it just flops around all over the place, it's a 66 box converter. If you look at the front of the boxes with a 65 & 66 in front of you, then the difference in the input shaft diameter is obvious.
You can fit a 66 in place of a 65 (c/w converter) as externally they're the same unit. The SD1 was supposed to have been fitted with a 66 just before the intro of the GM180, but although I've seen the id plates saying BW66, they didn't have the deep sump which the 66 should have, and I've no way of knowing if they had the big input shaft either.
 
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