[NC29] CBR400 lost compression
Posted: Tue May 29, 2018 3:39 pm
Hello there!
My girlfriend's Honda was so problematic in the past year. During these period the bike has been in 3 different services, because of difficulties at the engine starts. So she had to buy a renewed generator coil and 4 spark plugs, but the bike was still unreliable. The very first guy used to start up the engine with brake cleaner, when we said that the bike is still a ****box after giving him a lot of money (according to the wages in Hungary).
It has been about two months, when we were able to find such a great local mechanic. He said that the compression is lost, the bike probably ended up having possibly bended valves in the 1st and 4th cylinders (he said) and one of the ***holes stole the shorter air funnels from the side carburetors.
In the first weeks the engine started easily and was so powerful, didn't really show any sign of mechanical problems.
It's nearly impossible to find an NC29 cylinder head in good condition, I found two in eBay. I thought maybe the other naked 400s, like CB or Super-Four has the same cylinder head or maybe valves, which we can exchange.
Have you ever been in such a situation?
Thank you
My girlfriend's Honda was so problematic in the past year. During these period the bike has been in 3 different services, because of difficulties at the engine starts. So she had to buy a renewed generator coil and 4 spark plugs, but the bike was still unreliable. The very first guy used to start up the engine with brake cleaner, when we said that the bike is still a ****box after giving him a lot of money (according to the wages in Hungary).
It has been about two months, when we were able to find such a great local mechanic. He said that the compression is lost, the bike probably ended up having possibly bended valves in the 1st and 4th cylinders (he said) and one of the ***holes stole the shorter air funnels from the side carburetors.
In the first weeks the engine started easily and was so powerful, didn't really show any sign of mechanical problems.
It's nearly impossible to find an NC29 cylinder head in good condition, I found two in eBay. I thought maybe the other naked 400s, like CB or Super-Four has the same cylinder head or maybe valves, which we can exchange.
Have you ever been in such a situation?
Thank you