slammer302 2,156 #1 Posted July 23, 2013 Just bought a 308-8 the guy i bought it from said it was using sum oil so he had a new rod and piston put in it when they started it up it had a knock in it so they turned it off and never messed with it again. I took the oil pan off and took a look every thing looks right except were the rod connects to the crank looks like it has alot of side to side play would this make noise when running? Share this post Link to post Share on other sites
oldredrider 2,553 #2 Posted July 23, 2013 Short answer...something is not right! Tear it back down and fix it or be prepared for a ventilated block. Share this post Link to post Share on other sites
js5020 111 #3 Posted July 24, 2013 I have a Kohler 301 that is a knocker, it broke a rod a few years back and I just slapped another piston and rod in it at the time cause I needed it,, it was obvious that it needed bored so I think its piston slap causing the knock. Check the bore size. Share this post Link to post Share on other sites
slammer302 2,156 #4 Posted July 24, 2013 Thanks js5020 i will do that. i have a b-80 that i put a k241 on it. that been setting for 9 years it is a knocker and i use it every day Share this post Link to post Share on other sites
slammer302 2,156 #5 Posted July 25, 2013 Put it back together today and fired right up and sounded great! Share this post Link to post Share on other sites
Fordiesel69 271 #6 Posted July 25, 2013 What did you find wrong with it? Share this post Link to post Share on other sites
slammer302 2,156 #7 Posted July 25, 2013 Nothing really i don't know what they were hearing Share this post Link to post Share on other sites
