 How to identify an unmarked aftermarket cam?, Perfect low mile cam and lifters. |
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| Mark Henry |
 Nov 30 2011, 10:41 AM
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#1
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that's what I do!  Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada  |
I have a used cam and lifters (that are marked in the order they came out) but it isn't marked on the pump end. It's built on a CWC, bolt on gear, cam blank so I know it's aftermarket.
The base circle is 1.244 and with lift 1.540, so lift at the cam is .296. The lifters are the 2 piece w/snap ring type, still perfectly convex. Both lifters and cam show almost no wear with the oxide treatment just barely worn off. I know the lifters are not hydraulic, I've had one apart. I'd like to ID it to sell or if it's an FI cam it would be perfect for an engine I'm building (of course I'll let the guy know what I'm doing and major discount on the cam/lifters). I should have the tools to measure duration, but I'm not too sure how to go about it. |
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Replies(1 - 5)
| Mark Henry |
Nov 30 2011, 11:20 AM
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#2
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
If anyone has a WEB stock FI cam on your bench could you measure the base circle and lift at the cam for me?
Thanks |
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| Valy |
Nov 30 2011, 12:26 PM
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#3
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Senior Member Group: Members Posts: 1,677 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
QUOTE(Mark Henry @ Nov 30 2011, 09:20 AM)  If anyone has a WEB stock FI cam on your bench could you measure the base circle and lift at the cam for me? Thanks Hope I got the links right. It's a Webcam #73 with 5 degree added to exhaust. The base circle is stock. http://www.914world.com/bbs2/index.php?s=&...t&p=1570145 (IMG:http://www.914world.com/bbs2/uploads/post-11573-1321038248_thumb.jpg) |
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| Valy |
Nov 30 2011, 12:37 PM
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#4
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Senior Member Group: Members Posts: 1,677 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
QUOTE(Mark Henry @ Nov 30 2011, 08:41 AM) I have a used cam and lifters (that are marked in the order they came out) but it isn't marked on the pump end. It's built on a CWC, bolt on gear, cam blank so I know it's aftermarket. The base circle is 1.244 and with lift 1.540, so lift at the cam is .296. The lifters are the 2 piece w/snap ring type, still perfectly convex. Both lifters and cam show almost no wear with the oxide treatment just barely worn off. I know the lifters are not hydraulic, I've had one apart. I'd like to ID it to sell or if it's an FI cam it would be perfect for an engine I'm building (of course I'll let the guy know what I'm doing and major discount on the cam/lifters). I should have the tools to measure duration, but I'm not too sure how to go about it. The lift looks close to stock. The stock lift on the cam should be I=0.297 E=0.279. The cams are usually stamped near the oil pump driver. |
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| bulitt |
Dec 1 2011, 01:23 AM
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#5
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Achtzylinder Group: Members Posts: 4,188 Joined: 2-October 11 Member No.: 13,632 Region Association: South East States |
Some engine builders have a machine which will give you the profile of your cam, called Cam Pro Plus. You should call around. I know Mondellos in Tennessee has one.
www.mondello.com |
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| naro914 |
Dec 1 2011, 04:25 PM
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#6
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Losing my mind... Group: Members Posts: 2,476 Joined: 26-May 06 From: Charlotte, NC Member No.: 6,073 Region Association: South East States |
I had a set of cams I sent to WebCams and they verified the profile for me. For free....
Turns out they are 911 S cams (IMG:style_emoticons/default/smile.gif) |
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