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Registered
Join Date: May 2002
Location: Battle Creek, MI
Posts: 519
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Cam question
I'm building a 2056cc motor from a stock 2.0, what cam would everyone recommend, of course it will be a webcam and I will buy new webcam lifters. The motor will be carbed and will have SI Stainless valves all around, (I just ordered them). The heads will be polished and mildly ported. The car will be a summer daily driver that will see some occasional track time. Whicj cam would be best?
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2011 Chevy Silverado (The Hauler) 1984 911 Carrera summer daily driver |
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02-06-2003, 10:10 AM
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Join Date: Jul 1999
Location: Boulder, CO, USA
Posts: 392
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I know very little about cams but am doing the same rebuild currently and had the Webcam 163/86B suggested to me because I wanted some low-end torque. This is a dual-duration cam and I think that means the exhaust valve stays open for longer than the intake. This helps to overcome the problem with the restrictive exhaust port on the T-4 heads. I think Porsche 2.0L heads are a different story. I would email John at www.aircooled.net as he was extremely helpful with my cam choice. Also, his prices are great and so is the service. Good luck!
Ben |
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02-06-2003, 10:38 AM
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Join Date: Jan 2001
Location: Carlsbad,Ca.
Posts: 1,106
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I'm building the same engine and I choose the Web 86 if it helps you any
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1981 911SC Targa-1966 912 -1989 Alfa Spider Graduate 1967 912-1985 Toyota FJ60 Landcrusier 1985 Toyota SR5 4x4-1965 Baja Bug-1997-4Runner-4x4 1966 Bug stock-2004 Toyota Rav4-1989 XJ6 Jag 1975 914, 1965 Norton N15CS 750, 1975 Husqvarna 360 CR GP 1982 Honda 500 XLS |
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02-06-2003, 10:47 AM
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Join Date: Oct 2001
Location: Momence, IL 60954
Posts: 1,911
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Another great cam that works really well on both carb'ed and fi'ed engines is a Webcam 91 grind with 112 intake lc and 108 exhaust lc. Wide powerband.
Charles Navarro LN Engineering http://www.LNengineering.com Aircooled Precision Performance
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Charles Navarro President, LN Engineering and Bilt Racing Service http://www.LNengineering.com Home of Nickies, IMS Retrofit, and IMS Solution |
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02-06-2003, 02:06 PM
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Registered
Join Date: Feb 2001
Location: Aircooled Heaven
Posts: 1,054
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163/86B is way too much for an engine without headwork, increased valve margins and some added CR. The 163/86B is a cam that has ALOT of lift, .500 to be exact and can cause some head problems if they are not set up for that much lift.
I stay in the 280is duration range for "esser" engine with smaller displacement, expecially for the street. I Love a 163/86B as a base for my bigger engines, but I modify some aspects of them, especially lobe centers. I have another dual pattern cam, with tighter duration margins that works well for a smaller engine, ut it still has .500 lift symmetrical. Not enough cam is WAY better than too much in a street car!
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Jake Raby Owner, Raby's Aircooled Technology www.aircooledtechnology.com www.massivetype4.com |
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02-06-2003, 06:23 PM
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