Topic: Glad it wasn't a beehive spring. (Read 6978 times)

MCE · « **Reply #30 on:** September 23, 2018, 02:05:38 AM »

I've seen duel springs break and bend valves too. No getting around it. (Although they never fully dropped)

MCE · « **Reply #31 on:** September 23, 2018, 10:11:41 AM »

Ran duel and triple springs on my BBC Drag boat. They broke every now and then, and the valve almost never
survived when it happened under full power. Frequent replacement of them helped, but never fully eliminated
the problem.

The aggressive cam lobes we ran had allot to do with it. When I switched to Blown gas, the cams were a little
more tame and we rarely had spring problems. .650 lift vs. .720+ had to have had something to do with it.

(I'm actually pleasantly surprised as to how long they last on these bikes however)

MCE · « **Reply #32 on:** September 30, 2018, 11:30:55 PM »

Word I got is: Don't use bee hives on performance applications. (Over .500" ish)

Twolanerider · « **Reply #33 on:** September 30, 2018, 11:45:35 PM »

Quote from: MCE Performance on September 30, 2018, 11:30:55 PM

Word I got is: Don't use bee hives on performance applications. (Over .500" ish)

Got this and its mate back from machining several weeks ago. 625 cams. Have had beehives break before. Been a long time ago but it's happened. Had to pay a few bucks extra to get these. Never gave it a second thought.

Author Topic: Glad it wasn't a beehive spring. (Read 6978 times)

MCE

Re: Glad it wasn't a beehive spring.

MCE

Re: Glad it wasn't a beehive spring.

MCE

Re: Glad it wasn't a beehive spring.

Twolanerider

Re: Glad it wasn't a beehive spring.