Guys,
Morning! I have replaced the CCT on my '91 CBR. Before doing this, I was experiencing a stall at junctions, due to something that sounded like a "hydraulic piston lock" A definite 'stop' from the engine. My machine now doesnt do this, and am wondering if the valve timing could have been out by one toothe before, or have I set it out by one tooth now? Anyone have any experience fof how the engine feels when it IS set one tooth from perfect? I should have checked the timing PRIOR to stripping the cams, but just headed in like a bull at a gate! Bike feels great no power seems to be lost, and it pulls better 'off the line' with more lower end power.

Prob nowt wrong, never harms to check....

Ara

 

Yoe were probably getting the same effect as being set one tooth out by the "whip" in your camchain. I have just replasced my cc and found there was almost 1/2" of play in the chain between the timing sprockets on the cams, and occasionally the bike appeared to "stutter" from pull away for no apparent reason. My timing wasn't out but I suspect it's a similar symptom....?

 

Sounds like you have it in correctly. If you were a tooth off you would know it. Most times the intakes would open to soon and the engine would push fuel back to the carbs or open to late and you would loose power. If the exhaust opened to soon the burning mixture would be dumped to soon and you would once again loose power. If the exhaust were to open late, the spent mixture would still be in the combustion chamber not allowing the new mixture in and you would loose power.

In any case, if you were one tooth off on either cam, the bike would not idle correctly or not idle at all.

Edit: Way to many buttons on this computer.

 

Cheers guys, thought so, just needed to know, cos me and missus are off on a trip of about 1,000 miles, and don't need the cams chewing! Also noticing that the bike runs cooler in traffic. I rteckon the old CCT must have been causing a few issues.

Thanks.

Ara