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| Cam Card https://slantsix.org/forum/viewtopic.php?t=35219 |
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| Author: | Rick Covalt [ Wed May 06, 2009 6:36 am ] |
| Post subject: | Cam Card |
Ryan's Dart is up and running with the Erson regrind cam in it. 510 lift / 282 duration. The spec sheet for the cam shows .023 hot for both intake and exhaust clearances. Why are they the same? I thought the exhaust was usually about .010 more clearance than the intake. Thanks, Rick |
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| Author: | 66aCUDA [ Wed May 06, 2009 6:48 am ] |
| Post subject: | |
Rick Each Cam Co. Set the lash up different. It also changes from grind to grind. Remember that its only a starting point and you can "play" with your lash to get more or less from your cam. It not a BIG change but a change none the less. Frank |
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| Author: | sandy in BC [ Wed May 06, 2009 7:27 am ] |
| Post subject: | |
Start with the cam grinder specs....then when the motor is running well try varying the lash for smooth idle and power production. I generally vary the lash about 2 thou each trial. I ended up about 1-2 thou tighter on my Erson 280/270 (intake and exhaust) |
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| Author: | Rick Covalt [ Wed May 06, 2009 1:36 pm ] |
| Post subject: | Thanks |
Well I will have to loosen up the intake to their specs and start there. I'm at .015 and .023 now. It idles pretty well after it is warmed up and I have about 14-15" vacuum. Is that about where I should be with a cam this size. Thanks, Rick |
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| Author: | Dart270 [ Wed May 06, 2009 1:58 pm ] |
| Post subject: | |
That is quite good vacuum for a cam that size. Lou |
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