Awesome, is it worth it swapping to your cam from Comp cams?
I have stage 3 on intake and stage 1 on exhaust
I have stage 3 on intake and stage 1 on exhaust
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Awesome, is it worth it swapping to your cam from Comp cams?
I have stage 3 on intake and stage 1 on exhaust
So the "NSR" isn't exactly accurate in their description? Have you had cars on the dyno that have experienced valve float with the comps? Did they have power fall off in the upper RPM?
So on a boosted coyote running say 8.5ish psi and e85 with a TVS what do you think the gains would equal over the stock set. Probably would also need a fuel system upgrade also I assume if your running a BAP....just curious , seems this would be a nice addition to help up top with us TVS guys
Hard to say exactly. I guess we should try the swap on your car?
I suppose that depends on the intended RPM band Comp had in mind.
We have seen valve float above 7600RPM with their Stage 3 setup on the coyote and stock valve springs. A buddy bent his exhaust valves from banging on the 8K rev limiter in his 14. Another customer in the middle east bent the exhaust valves as well. As a result I set the rev limits with Comp Cams lower than with stock cams unless valve springs are installed.
According to L&M the data he has on the Comp lobe profiles vs stock spring shows they will float the valves. They are too aggressive on the lobe profile for higher RPM. The intake lobe also floats, but due to where it floats (bounces on the seat) we've not seen it tap the piston and bend the valve. The exhaust closes during the overlap phase so it does get close enough to the piston to tap it.
Are these cams regrind? Will they need shim to set the lash?
Maybe this fall I'll try a set. The baby cj are good, but i want a little more power on motor.
I agree because my friend bent an exhaust valve with Comps 3 and destroyed his motor
Was he running limiters? I'd guess probably not
Limiters have no effect on valve float. They simply limit the amount of advance/retard.
It's not cam timing that causes the valves to hit the pistons, it's float. We can see it in data logs, cams become erratic bouncing around the commanded cam timing. They don't go off in one direction to max advance/retard.
I understand limiters don't effect valve float. I was wondering if the cams are not limited and someone got a little to aggressive with the cam timing and say swung the exhaust cam a little too far could that not cause bent exhaust valves?
What about before the RPM patch was available and the cams would revert back to "0" ? Could this be a contributing factor?
Sorry I know this is getting a little off topic of the post and I hope your not taking offense. I think we all appreciate you sharing a small portion of your experience and insight into this
How would this compare to a full set of Comp Cam stage 1?
Do I read it right that this intake is good for 5hp? How would that gain compare to Comp Cam stage 1 with AED tuning?
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