09-21-2023, 07:44 AM
Since i had my cb1000r new i started to take notes on the number of turns the cam chain tensioner had to the clockwise end stop from new.
Also counted the amount of turns on the cb1100 at 43.000 km which was 3,3 HALF turns ( 180 deg's );
condition; engine cold and not running
The cb1100 is now at 70.000 km and the half turns have increased to 3.5 turns, just checked now.
Made a tool to wind back and compress the camchain and used this to measure the amount of turns, just undo the cam chain tensioner bolt and insert the tool, just be aware there is some oil pressure ( when the engine is running to help tension the cam chain ) just behind this m6 bolt which has an aluminum washer to stop this oil from leaking, i manage to re use the washer by locating the cross back into the slots before just nipping the bolt up without over tightning it.
And dimensions for the tool i use;
And the cam tensioner data as written down for a comparison;
So it may pay to check yours and write it down to compare over time/km's.
Values may vary between bikes but if yours are not showing excessive increases it may be
unnessary to worry about it, diagnose before repair is not a bad strategy.
Also remember that the tensioner uses "ratchet non return stops" to maintain tension on the chain, so depending on where the ratchet stops are the chain may be a bit looser or firmer but the oil pressure keeps the chain tensioned up when the engine is running.
So your query is a very good one and hope these tips help to make a decision which you do not regret later mixed in together with other member's findings.
Ohh nearly forgot; any valves out of spec?
Cheers sync'
Also counted the amount of turns on the cb1100 at 43.000 km which was 3,3 HALF turns ( 180 deg's );
condition; engine cold and not running
The cb1100 is now at 70.000 km and the half turns have increased to 3.5 turns, just checked now.
Made a tool to wind back and compress the camchain and used this to measure the amount of turns, just undo the cam chain tensioner bolt and insert the tool, just be aware there is some oil pressure ( when the engine is running to help tension the cam chain ) just behind this m6 bolt which has an aluminum washer to stop this oil from leaking, i manage to re use the washer by locating the cross back into the slots before just nipping the bolt up without over tightning it.
And dimensions for the tool i use;
And the cam tensioner data as written down for a comparison;
So it may pay to check yours and write it down to compare over time/km's.
Values may vary between bikes but if yours are not showing excessive increases it may be
unnessary to worry about it, diagnose before repair is not a bad strategy.
Also remember that the tensioner uses "ratchet non return stops" to maintain tension on the chain, so depending on where the ratchet stops are the chain may be a bit looser or firmer but the oil pressure keeps the chain tensioned up when the engine is running.
So your query is a very good one and hope these tips help to make a decision which you do not regret later mixed in together with other member's findings.
Ohh nearly forgot; any valves out of spec?
Cheers sync'