Matt Graham
Registered
Hayabusa Gurus,
I run a Gen II Busa in my Radical SR3 road racing car. The engine is bone stock except for a dry sump setup (scavenge pump replaces the water pump, use electric water pump) and larger oil and water rads.
This past season was my first using the Gen II engine, and in terms of power, drive-ability, etc, I am very pleased. That being said, at the last outing of the season, the cam chain broke bending several valves. Upon further inspection it appears that some of the valves might have started to pull through the retainers, and that this may have caused the valves to float, causing the cam chain failure.
I searched several times and didn't find much information on the stock Gen II valve springs, retainers and cam chain, so if it's already been discussed, please forgive me (and please point me to the discussion).
So what say the experts? Should I treat this as an isolated failure? Will the stock springs/retainers/cam chain hold up to my abuse of a stock engine or should I invest in some heavy duty parts? I really prefer to NOT open the stock engine and start messing around in there, but I also don't want to drive around a ticking time bomb.
Thanks in advance.
-Matt
PS - A pic of the car
I run a Gen II Busa in my Radical SR3 road racing car. The engine is bone stock except for a dry sump setup (scavenge pump replaces the water pump, use electric water pump) and larger oil and water rads.
This past season was my first using the Gen II engine, and in terms of power, drive-ability, etc, I am very pleased. That being said, at the last outing of the season, the cam chain broke bending several valves. Upon further inspection it appears that some of the valves might have started to pull through the retainers, and that this may have caused the valves to float, causing the cam chain failure.
I searched several times and didn't find much information on the stock Gen II valve springs, retainers and cam chain, so if it's already been discussed, please forgive me (and please point me to the discussion).
So what say the experts? Should I treat this as an isolated failure? Will the stock springs/retainers/cam chain hold up to my abuse of a stock engine or should I invest in some heavy duty parts? I really prefer to NOT open the stock engine and start messing around in there, but I also don't want to drive around a ticking time bomb.
Thanks in advance.
-Matt
PS - A pic of the car
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