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911teo 911teo is offline
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Join Date: Feb 2004
Location: Surrey, UK
Posts: 3,135
Cam choice question

I wanted a little bit more out of my 3.6 so we set out to build a new motor.

Which cam would you chose to put in this engine

These are the specs:

-993 core
-3.9 CMW P&C
-CNC ported heads (45mm)
-Carrillo rods
-52mm intake valves
-43mm exh valves
-Chromolly drilled retainers
-CMW springs
-Jenvey ITBs 51mm tapered 45mm
-MOTEC M600 ECU


IMP CONSIDERATIONS

The engine will go in a street car.

The decision to go with ITBs was based on the goal of acheiving
maximum throttle response.

Torque is also an important factor as the car is NOT a race car.

Peak power was never assumed to be one of the most important criteria for the decisions taken.


In North Carolina we need to pass emissions so that limits the choice of cam (even though I think we can play around with Motec to get a very very lean mapping just for the emission test)

My engine builder is suggesting the following cam:

DC-22



What is your opinion? some fellow pelicans think that it is too mild and with the ITB and the 3.9L displacement I could go much wilder.
Again this is a street motor.

This is a table of DC-22 cams relative to other Porsche and custom cams.

http://www.drcamshafts.com/911profilesprint.htm

I really value your opinions as I am certainly not an expert!

Thanks for our help
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Old 02-01-2006, 09:33 AM
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