guys, I have a queation about outdrives. I have swapped out my 140 4 cylinder cracked block 
with a junkyard bought formula 1 that had a 165 6 cylinder, Cracked manifold of course. The boat had a outdrive already removed and laying in the boat. Gear lash is better than my 140 and since I understand they have different gearing I figured it would be the wise choice to use it since I have upgraded to a 6 cylinder. Well here is the question. The input drive shaft is stamped 188. I am assuming this is for the 8 cylinder motors. The revolution for my 140 was a 2 to 1 ratio. One of the input shaft gave me 1/2 turn on the prop. The 188 is giving me 1 to 3/4 ratio. 1 turn on the input and 3/4 turn on the prop. This will tranlate into more RPM on the prop which might not be bad since my prop was a 17" pitch prop. Any thoughts form you guys on if this will be okay with the 6 cylinder? Do you think I will be close on props or just need to change props? <br /><br />I split the unit and put a new pump in it. It didn't really need it once I got in to it. Oil was very clean. The unit shifts very good and feels tight. "in repsect to lash"
with a junkyard bought formula 1 that had a 165 6 cylinder, Cracked manifold of course. The boat had a outdrive already removed and laying in the boat. Gear lash is better than my 140 and since I understand they have different gearing I figured it would be the wise choice to use it since I have upgraded to a 6 cylinder. Well here is the question. The input drive shaft is stamped 188. I am assuming this is for the 8 cylinder motors. The revolution for my 140 was a 2 to 1 ratio. One of the input shaft gave me 1/2 turn on the prop. The 188 is giving me 1 to 3/4 ratio. 1 turn on the input and 3/4 turn on the prop. This will tranlate into more RPM on the prop which might not be bad since my prop was a 17" pitch prop. Any thoughts form you guys on if this will be okay with the 6 cylinder? Do you think I will be close on props or just need to change props? <br /><br />I split the unit and put a new pump in it. It didn't really need it once I got in to it. Oil was very clean. The unit shifts very good and feels tight. "in repsect to lash"