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Thread: CP Custom 92mm 14.5:1 Pistons

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Posts: 21-28 of 28
2011-05-02 23:56:35
#21
Originally Posted by STRATTON
Its put under alot of stress. It could break if the float is violent enough.

On high reving motors such jap bike motors reversion occurs. Also crank case pressure can go up.

Stratton.


All on this Forum recon we need to make the valve pockets deeper for valve float?? Rite??? WRONG!!!!!!!!!!!!!!!!

What is the angle that the valves sits in the head???
2011-05-03 00:00:28
#22
Shoudlnt the valve reliefs be the same angle as the valve? when the valves float they're going to contact the pistons and break rockers, bend valves...
2011-05-03 00:07:43
#23
Originally Posted by derm
All on this Forum recon we need to make the valve pockets deeper for valve float?? Rite??? WRONG!!!!!!!!!!!!!!!!

What is the angle that the valves sits in the head???


Deeper pockets arent the cure for valve float, I totally agree. I hope you dont think I was hinting at that threw any of my posts. Deeper pockets allow for more aggressive cams ie. Larger lift, longer duration.

I have no idea of the angle of the valves in our heads. Im sure you know.

Cp knows as at one point they had a ve head so they could spec the pistons.

Stratton.
2011-05-03 00:11:09
#24
:
Originally Posted by cory
Shoudlnt the valve reliefs be the same angle as the valve? when the valves float they're going to contact the pistons and break rockers, bend valves...


I think hes refering to valve to valve clearance when float occurs.

Wich is possible depending on the design of the motor.

Im gonna guess its possible on our motors.

Stratton.
2011-05-03 00:16:14
#25
Yes he is I'm sure he's talking about the valve contacting the pistons and or the other valves when they float... if the reliefs are deep enough it will let us get by w a little float. Or stiffer springs....
2011-05-03 00:17:38
#26
The one good thing about our valves being at a shallower angle is that it gives us more room compaired to the hondas as far as v2v
2011-05-03 05:58:21
#27
Stratton I'll draw a picture and explain to U what the problem is but NO deeper releaves id not the answer!!!
2011-05-03 11:21:28
#28
I want to see a picture : )

I know we can learn a lot from you derm!
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