Maybe I misunderstood you, but why would it spark when you kick it over if the ignition isn't on? I'm assuming there's no reason to have the ignition on. I just did my 1964 Tr6. Compression was around 175 on each cylinder... on a warm bike. I have a 70's Honda CB750 where one cylinder seems a lot lower (like 40 psi less than the other 3) but the bike runs ok. I need to check it again when the bike is warm.
I didn't really explain the spark issue. You are correct, it should not spark if the ignition is off. My comment (and caution) comes from an incident I had many years ago when working on a 1950s Triumph with no ignition switch. I kicked it over and it jumped a huge spark, causing quite a commotion. I've not had the engine apart on this T140 since I bought it (5 years ago) so I don't know what pistons it's running and how high compression they are. I was really just doing the test as a reference point.
Yes, 140 seems good and the bike is running fine, so I'm happy with that. I was really just interested in getting a measurement as I've never tested this bike before.
Another great video, clear concise information as always and as the man said its time to ride.
great vid ...looking at purchasing a t140
Another great vid 👍
Thanks Gary!
Maybe I misunderstood you, but why would it spark when you kick it over if the ignition isn't on? I'm assuming there's no reason to have the ignition on. I just did my 1964 Tr6. Compression was around 175 on each cylinder... on a warm bike. I have a 70's Honda CB750 where one cylinder seems a lot lower (like 40 psi less than the other 3) but the bike runs ok. I need to check it again when the bike is warm.
I didn't really explain the spark issue. You are correct, it should not spark if the ignition is off. My comment (and caution) comes from an incident I had many years ago when working on a 1950s Triumph with no ignition switch. I kicked it over and it jumped a huge spark, causing quite a commotion. I've not had the engine apart on this T140 since I bought it (5 years ago) so I don't know what pistons it's running and how high compression they are. I was really just doing the test as a reference point.
140 is fine. Both cylinders are the same. Time to go riding.
Yes, 140 seems good and the bike is running fine, so I'm happy with that. I was really just interested in getting a measurement as I've never tested this bike before.
Shouldn’t be any spark with key off