All,
I thought that Crane stopped making these, but I was wrong. Just a fyi;
https://www.summitracing.com/parts/crn-10510-1/overview/
Dave
Always wondered what they would sound like adjusted to 15 thou clearance, probably pretty noisy when hot.
Fwiw, common practice in car engines is:
When running a hydraulic lobe [no lash ramps], lash is run very tight. As little as .003" or .004".
I would try just loose enough to allow p-rod to spin with engine cold, then have a look at it hot. Isn't that how the old iron head sportsters were adjusted?
Dave
Quote from: dave brode on January 23, 2019, 01:39:26 PM
Fwiw, common practice in car engines is:
When running a hydraulic lobe [no lash ramps], lash is run very tight. As little as .003" or .004".
I would try just loose enough to allow p-rod to spin with engine cold, then have a look at it hot. Isn't that how the old iron head sportsters were adjusted?
Dave
That's how I adjusted my Siftons in my slabside shovel. Snug to turn with the fingers. As it warmed up and the cylinders grew they would start to talk to you very quietly. Those were cast cylinders and I don't believe they grow as much as the lined aluminum do.
For the street, I think this is a better idea. I run limiters, they make a difference in how easy the motor spins after sitting a while. They would have to help maintain cam timing at higher (or any RPM) RPM's too.
http://harleytechtalk.com/htt/index.php?topic=107431.0
Quote from: Ohio HD on January 23, 2019, 02:31:23 PM
For the street, I think this is a better idea. I run limiters, they make a difference in how easy the motor spins after sitting a while. They would have to help maintain cam timing at higher (or any RPM) RPM's too.
http://harleytechtalk.com/htt/index.php?topic=107431.0
I agree, adjusted like you say, it really should be same as solids, as far as eliminating loss of lift/duration.
Quote from: dave brode on January 23, 2019, 06:39:17 PM
Quote from: Ohio HD on January 23, 2019, 02:31:23 PM
For the street, I think this is a better idea. I run limiters, they make a difference in how easy the motor spins after sitting a while. They would have to help maintain cam timing at higher (or any RPM) RPM's too.
http://harleytechtalk.com/htt/index.php?topic=107431.0
I agree, adjusted like you say, it really should be same as solids, as far as eliminating loss of lift/duration.
I also can't tell any difference in valve train noise, with or without them.