XTrooper

The only "issues" I now have with mine are the additional horses and torque I obtained with them.

Greg Fell

iTrader: (9)

Yes, I bent valves. It happened on a 4th gear run. It happened, because of valve float. It is in your best interest to prevent valve float, even if it will cost you power. While I may have lost power, I gained area under the curve so it is probably a wash, and safer too.

mrr23

iTrader: (3)

why would it be the 1.8 rockers, versus say a cam with the same rate of lift/duration built into the cam with 1.7 rockers? either way its done, the same results happen at the valve. the benefit i see from having 1.8 rockers and smaller cam lobes, is less speed from valvetrain parts. using 1.8 rockers allows you to slow down the rest of the valvetrain (lifter, pushrod, rocker) while only speeding up the valves. now, the spring only has to control the speed of the valve itself. not the entire valvetrain.

example
220/230 .581./.581 lift with 1.7 rockers

214/224 .581/.581 lift with 1.8 rockers.

both basically have the same effect at the valve. but, the with the 1.8 rockers, the lifter. pushrod, and rockers isn't moving as fast.

vettenuts

iTrader: (4)

I put up a new post over in the dyno section. I don't believe the drop off at 5,900 is valve float. On the one run up to 6,600, I think I had float at 6,400. Crane's web site verifies that this is likely as they call for float at 6,600 with 1.7 rockers.

Greg,

What cam are your running, I don't see it in your earlier post?

Greg Fell

iTrader: (9)

There is a very easy (and cheap) way to find out.

I bet you'd be surprised. Just my opinion.