How Much Cam Duration Before Water Reversion Becomes A Problem ?

[MidnightMantra]

Is there anyone running a big duration cam and having sucess running water thru the headers? What are the limits? Last two times out, I broke a rocker arm stud due to water compressing in the cyl against the valve causing the rocker stud to snap, luckily no bent valves or push rods. I am running a banderlog valve that kicks in at 2000 rpms. But I have a 310 duration cam also. Always seems to happen at cruising speed after a 15 minute run. I was looking at putting gate valves on the injector lines to restrict some more water. Looking for some input. I really don't want to run them dry, but I dont want to break a engine either.

[river redy]

I had the same problem and always had to change my oil and worried about breaking parts, so i ran a manual valve up by my seat that had 4 positions off/low/medium and high so when at idle i was able to shut them off, but still not fool proof so i just run them dry and recoat or rechrome them :D

[bigriverdog]

108 degrees is what I have always heard. I run an over 700 lift roller with 108 degrees and I have no issues with a stock bassett t-value.

[djdtpr]

I am running a .286 on the int and a .296 on the exh @ 50 and have no problems i am running a 114 center but have the cam retarded 2* so it is a 116 center.I run a manuel valve and have no problems.

[nascar97]

im running a 714 272 282 and the cam grinder aks if i was going to run water.

[MandDPerformance]

Duration is generally not as big a problem for reversion as the lobe center. Tighter lobe centers tend to create more reversion.(eg.108) If you've got a 110 or higher you should be OK.

[396_WAYS_TO_SPIT]

Duration is generally not as big a problem for reversion as the lobe center. Tighter lobe centers tend to create more reversion.(eg.108) If you've got a 110 or higher you should be OK.
I agree! my cam is a 108 lobe center and it is a choppy mofo!!!! but then again i run dry.....