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914World.com _ 914World Garage _ What cam with Megasquirt build
Posted by: Dtjaden Dec 12 2013, 10:55 PM
I am about to start an engine build based on a 2.0 core engine I picked up from a friend. It will be 2056 displacement and I plan to use MS III fuel injection and later MS ignition. This will be used for spirited road driving with an occasional DE event. This is not a daily driver.
One of my concerns is the selection of an appropriate cam for this use. I plan on using as many of the Djet parts as is practical including the intake system but I am planning on having the heads reworked. Head work contemplated includes new valves, seats, springs and mild porting and polishing.
I would appreciate and opinions concerning an appropriate cam for the use and configuration as described.
Thanks!
Posted by: Jake Raby Dec 13 2013, 06:18 AM
Utilizing the stock plenum and TB will make the biggest impact on which cam is optimum. Using those parts, I'd keep the cam the same as I would for stock D or L Jet. If not you'll fight low speed issues and idle tuning.
Posted by: Dtjaden Dec 13 2013, 09:23 AM
Thanks Jake!
Utilizing the stock plenum and TB will make the biggest impact on which cam is optimum. Using those parts, I'd keep the cam the same as I would for stock D or L Jet. If not you'll fight low speed issues and idle tuning.
Posted by: gothspeed Dec 13 2013, 12:15 PM
Since you are splitting the case I would at least run this Web cam #73 ..... you can easily change the intake in the future to individual ITBs while the engine is still in the car ..... but a cam would be a lot more difficult to change down the road.
Volkswagen Type 4 8v & Porsche 914 8v
Part #: 00-472
Grind: 73
Intake / Exhaust
Valve Lash (Inch):
.006" / .006"
Valve Lift (Inch):
0.426 / 0.426
Valve Lift (mm):
10.82 / 10.82
Advertised Duration:
262° / 262°
Duration @ 0.050":
224° / 224°
Lobe Center:
108° / 108°
Intake Opens 4° Before TDC
Exhaust Opens 40° Before BDC
Intake Closes 40° After BDC
Exhaust Closes 4° After TDC
Valve Timing Is Checked With Zero Valve Lash
@ 0.050 Inches Of Valve Lift.
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