All right guys didnt see any engine building thread so figured this could be a good start (if I missed it feel free to delete or merge!) Figured this could be a good place for general engine questions or build help.
I'll start off, built a Daytona 675 engine earlier in the summer for the little brother and he didnt want it so I put it into a rebuilt Daytona. First couple times I fired it up and ran sounded perfect, rode around the block a few times maybe 4k RPM tops in a few different gears and no issues. Took it out today and gave her maybe 2/3 throttle and now I hear a rattling, somewhere from 3K RPM and up, it matches the rpm. the weird thing is it kind of just stays a constant rattle above maybe 8K RPM. Bike pulls hard all the way to redline even with the rattle so I'm thinking it isnt cam related(maybe cam chain tension) and its not a knocking sound like a loose rod think more like change in a cupholder going down a wash boarded dirt road. While on the bike it sounds like its coming from dead center on the engine, while off the bike sounds like its coming from the back of the case in the transmission area. Im leaning toward its just something loose on the bike just havent found it yet, what do yall think?
I'll start off, built a Daytona 675 engine earlier in the summer for the little brother and he didnt want it so I put it into a rebuilt Daytona. First couple times I fired it up and ran sounded perfect, rode around the block a few times maybe 4k RPM tops in a few different gears and no issues. Took it out today and gave her maybe 2/3 throttle and now I hear a rattling, somewhere from 3K RPM and up, it matches the rpm. the weird thing is it kind of just stays a constant rattle above maybe 8K RPM. Bike pulls hard all the way to redline even with the rattle so I'm thinking it isnt cam related(maybe cam chain tension) and its not a knocking sound like a loose rod think more like change in a cupholder going down a wash boarded dirt road. While on the bike it sounds like its coming from dead center on the engine, while off the bike sounds like its coming from the back of the case in the transmission area. Im leaning toward its just something loose on the bike just havent found it yet, what do yall think?
Waiting on the cover gaskets and headgasket at the moment so todays job is to give the heads a little port and polish and then start on getting them back together. Should be ready to go by the time the gaskets all get here.