Intake Cams for Exhaust? Anyone tried it? Slotting?

[cajun]

Thinking about trying this on my 440 kit engine with a ported head, HRC GF replica airbox, Ignitech box and dynojet kit. Seems the instake lobes are .5mm taller and I have extras. So anyone tried it?

My engine builder that is porting the head right now said the stock cam profiles will probably not be enough to make the most of the 440 on top which is where I need it. Thinking about slotting the cams also but if that's not an option due to the large gear in the middle they will be degreed at the lease.

[cajun]

No one!?!?!?

[PARUS]

Here is standard camshaft

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CAM PRO PLUS Cam Card Report 07:55:39 18/09/2009
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Spec. Value
---------------- -----------------------------------------
File x:\Motorcycles\Honda\NC29 IN.CPP
Lobes I1, E1 x:\Motorcycles\Honda\NC29 EXH.CPP
Lobe Separation 105.0 Cam Deg.
Checking Height 1.00 mm
Valve Overlap 22.3 Crank Deg.

Intake Exhaust
------------------- -------------------
Centerline 105.0 ATDC 105.0 BTDC
Open 11.6 BTDC 41.2 BBDC
Close 40.8 ABDC 10.8 ATDC
Duration 232.3 Crank Deg. 232.0 Crank De
Area 597.3 mm Deg. 564.0 mm Deg.
Lash 0.200 mm 0.200 mm
Rocker Ratio 1.00 1.00
Peak Cam Lift 7.6099 mm 7.1654 mm
Peak Valve Lift 7.4099 mm 6.9654 mm
Lift @ TDC 1.887 mm 1.748 mm


And Kent Performance Camshafts

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CAM PRO PLUS Cam Card Report 07:56:12 18/09/2009
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Spec. Value
---------------- -----------------------------------------
File x:\Kent Direct acting mechanical profiles\D01-D99\D94.CPP
Lobes I1, I1 x:\Kent Direct acting mechanical profiles\D01-D99\D95.CPP
Lobe Separation 105.0 Cam Deg.
Checking Height 1.00 mm
Valve Overlap 32.9 Crank Deg.

Intake Exhaust
------------------- -------------------
Centerline 105.0 ATDC 105.0 BTDC
Open 18.0 BTDC 45.8 BBDC
Close 46.8 ABDC 14.9 ATDC
Duration 244.8 Crank Deg. 240.7 Crank De
Area 680.0 mm Deg. 603.1 mm Deg.
Lash 0.200 mm 0.200 mm
Rocker Ratio 1.00 1.00
Peak Cam Lift 8.2630 mm 7.3790 mm
Peak Valve Lift 8.0630 mm 7.1790 mm
Lift @ TDC 2.488 mm 2.103 mm


I think it give you some clue.

[PARUS]

If you will try - don't forget to let us know about result.

[cajun]

Thanks Parus I'll post up the results. And thanks for the info.