 Cam questions |
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| ThinAir |
 Mar 28 2004, 10:07 PM
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Best friends  Group: Members Posts: 2,542 Joined: 4-February 03 From: Flagstaff, AZ Member No.: 231 Region Association: Southwest Region 
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I'm assembling the pieces that I'll need to rebuild my 1973 2.0L engine that will retain the stock FI. I'm wondering about cam choices and why I would want to choose a particular one. The only change I've made from stock at this point is that I've got Mahle Euro pistons & cylinders, but they are stock size so there is no increase in displacement.
I hear a lot about the Web Cam 73 and here's the info I've been able to find on how it compares to stock: Type/Lift/Duration/Duration @ .050 Stock/.392/?/210 73/.426/262/224 Am I correct that Duration is how many degrees both intake and exhaust are open? Or is that called Overlap? If it is called Overlap, does anyone know the specs on the two cams? What is the difference between Duration and Duration @ .050? Lift is pretty obvious - the 73 is going to open farther. I assume this means it can deliver more fuel mixture in the same amount of open time compared to the stock lift. My car is a daily driver that will probably never see anything more exciting than a PCA autocross. So how do I choose a cam and why do I want one or the other? |
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Posts in this topic
ThinAir914 Cam questions Mar 28 2004, 10:07 PM
Bleyseng Staying with Djet?
The Web 73 will work and increa... Mar 28 2004, 10:14 PM ThinAir914 Thanks for the advice Geoff. Just for my own educ... Mar 29 2004, 01:30 AM Brad Roberts Duration is the amount of time that the valves are... Mar 29 2004, 02:13 AM Bleyseng And that is the problem with using the Djet as the... Mar 29 2004, 08:52 AM DuckRyder http://www.compcams.com/Technical/TimingTutorial/ Mar 29 2004, 05:22 PM lapuwali And overlap is the period in which both intake and... Mar 29 2004, 05:38 PM Bleyseng The MPS needs a strong 15hg of vacuum at idle as t... Mar 29 2004, 06:00 PM Dave_Darling ... Mar 29 2004, 06:34 PM lapuwali Actually, 0.040 is close to 1mm, not 0.1mm. (1mm ... Mar 29 2004, 07:45 PM Mike9142.0 Can you get a stock cam still? Mar 30 2004, 01:30 AM ThinAir914 Yup. Web Cam sells a stock grind for $133 (c... Mar 30 2004, 09:18 PM Jake Raby Overlap is easily calculated with any "cam card" j... Mar 30 2004, 09:47 PM
ThinAir914 This page at Web Cam is typical of the info that... Mar 30 2004, 09:51 PM  |
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