Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature currently requires accessing the site using the built-in Safari browser.
We noticed you are blocking ads. DO THE TON only works with community supporters. Most are active members of the site with small businesses. Please consider disabling your ad blocking tool and checking out the businesses that help keep our site up and free.
Assembled engine and used lots of assembly lube and the engine moved freely after back together.... with the engine installed on the bike I tried to put the starter back on and the engine was very difficult to turn over.... now cant get it to budge... any suggestions... I havent touched the valves if the valves are completely untuned and are shut on the exhaust stroke no matter what .... would this cause the engine to have to much compression... also I installed the points plate and it was pretty hard to get on .... Im baffled by the fact that I cant turn it over.
Can chain was off but held up with string and when I put it back together it initially moved freely ... I installed the cam sprocket while the timing was on the LT mark and the l in the can sprocket in the correct position
No, the valves being shut would not cause too much compression for the engine to turn over, that is how they work... but should only be on the COMPRESSION stroke. What makes you think they are closed on the exhaust stroke?
If they are your cam timing is out. You say the engine turned free after assembly. Complete assembly?
But then turned hard when you tried to install the starter... what did you do between those two steps?
I would pull the spark plugs and remove the stator cover and put a wrench on the rotor bolt. Then gently try to turn it over by hand. If a valve is hitting a piston because the cam timing is out, you can bend / break things... BAD things.
Ok I installed the spark advance mechanism and points plate and In theory if I installed the cam incorrectly theoretically can't I just remove all necessary parts and then flip the cam so that it's on the right stroke ?
Not sure I am following your question... A crankshaft is stupid. It doesn't know if it is on TDC of compression stroke or exhaust stroke until you put the cam in. In 360 degrees of crankshaft rotation you only get 180 of camshaft rotation.
Make sence?
Yeah makes sense.... hopefully I can get this right without pulling the engine again .... wish me luck .... hopefully the valves didnt damage the piston...
If the camis 180 degrees out it would only make the bike not run. Valves should not be touching pistons when cam is 180 of. One tooth off would still be possible for some bikes, more then 1 will be problematic.
As the engine did turn when it was on the bench, i guess we can rule out cam/timing.
Few things to check;
is it in gear?
is the clutch properly adjusted?
did you do something other then just 'putting 'er in the frame?
it's not immediately obvious from your comments if the cam is incorrectly timed or if there's another problem. I'd start by checking cam timing and see if the valves and pistons have been intimate.
If that's OK, remove the starter and see if there's anything wrong there. Sounds like cam timing though.
I assumed that the bike did not slip into gear but never checked... if thats the case I will be a happy camper.... and it would make a lot of sense. hopefully this is the case... and no damage done guys.
I assumed that the bike did not slip into gear but never checked... if thats the case I will be a happy camper.... and it would make a lot of sense. hopefully this is the case... and no damage done guys.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
