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12-07-2016, 09:22 PM | #41 |
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Re: Lifter rule in Stock
This new rule is smart for us Racers that have lost good motors to those JUNK Ceramic Lifters!!!! and for NHRA to check cams.
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12-07-2016, 10:30 PM | #42 |
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Re: Lifter rule in Stock
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12-07-2016, 11:10 PM | #43 | |
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Re: Lifter rule in Stock
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By the way, since lift will be checked at zero lash but you wouldn't run a solid at zero lash, I assume you have to give up some lift if you change over.
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Mike Moller NHRA 203 Q-R-T/SA Last edited by MikeMoller; 12-07-2016 at 11:15 PM. |
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12-07-2016, 11:31 PM | #44 | |
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Re: Lifter rule in Stock
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Somebody try and let us know ....
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12-08-2016, 12:34 AM | #45 |
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Re: Lifter rule in Stock
Please excuse my ignorance. But does this mean we can now run a solid lifter type cam in a hydraulic cam engine. IE a 396 350hp. Or just solid lifters on the hydraulic cam.
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12-08-2016, 01:52 AM | #46 |
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Re: Lifter rule in Stock
Since any duration is allowed I don't see why someone couldn't grind slight clearance ramps (just a couple thou) into them, but it doesn't seem worth bothering with.
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12-08-2016, 09:11 AM | #47 |
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Re: Lifter rule in Stock
If that is the case, then a lot of stockers are about to gain a lot of RPM, and spend a lot of money. This could get really interesting. Or really stupid. Maybe both.
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12-08-2016, 09:28 AM | #48 |
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Re: Lifter rule in Stock
Alan, that usually goes hand in hand. It's like the chicken and egg thing.
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12-08-2016, 09:44 AM | #49 | |
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Re: Lifter rule in Stock
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You can be down around .002 (hot) with a solid lifter on a 'hydraulic' cam lobe. Basically, as close to '0' as you can without hanging the valves open. A good rule of thumb.... on a typical iron head/iron block setup, you need around .003 more lash 'cold' than what you want it at 'hot' to allow for expansion. ie: .006 cold will get you .003 hot. Iron block/alum. heads & alum. block/alum. heads expand differently than iron block/iron head, of course.
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"That'll never work....." Last edited by Alan Nyhus; 12-08-2016 at 10:09 AM. |
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12-08-2016, 10:07 AM | #50 | |
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Re: Lifter rule in Stock
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