4G32, 4G33 and 4G37 crankshaft interchange

[PharmD]

Hi, I have a 4g32 belt SOHC engine from a Bobcat that spun a rod bearing and chewed up the crankshaft. I've searched all over the internet for a 4g32 crank to no avail (I live in the US where the 4g32 is not available). What I have come across is that the block to the 4g37, 4g33 are the same as the 4g32 only with different bores. My question is, would the crankshafts be interchangeable between these engines since the stroke is the same? My crank from the 4g32 has the 5 bolt holes for the flywheel like the 4g33 and 4g37. Would a crank kit for say a 1993 Eclipse with a 4g37 fit a 4g32 engine block? Thank you for any help, I greatly appreciate it.

[Torana68]

they are in the USA and should be reasonably common, go to the Classic Colt forum ,there is probably someone there that can help. The crank you mentioned might fit but there may be compatibility issues things like rear main seal differences or some other fairly minor irritation.

[Mitsiman]

All of the belt driven 4G32/33/37 Cranks are all interchangeable. It was only the chain drives which had variations in the rear crank rear main oil seal setup.

They are all the same stroke / same bearings.