How Do I Tell What It Fits? Honda Lower unit..

[Chinewalker]

Just picked up this unit in a pile of parts. Not sure what it fits. Got it narrowed down to either a 75/90 or a 115/130. Is there anything obvious I can measure or look for to tell one way or the other?

Thanks!

 

[AGENT 37]

Re: How Do I Tell What It Fits? Honda Lower unit..

I found out that they bolt together but gear ratios are different. Put it on a 75/90 and see if it turns less RPM than the original gear case..... then you'll know that it is a 115/130. I don't know how to tell otherwise.