......who replied to my post below.
Jerry B.: Yes, the engine did have more midrange power with the wide lash settings. Yes, I realize that bottom end power will suffer with a tighter valve setting, but that's fine with me. If I wanted more bottom end power, then I would have bought a Corvette with the L75 engine instead of the L76. Also, the engine was beginning to detonate slightly due to the lack of overlap with the emasculated valve lash settings, and I didn't want to back off the timing as a "band-aid". The engine has never detonated with the correct lash setting. The only problem is, why did the lash change so quickly??????? I like the lumpy idle. I don't mind the driveability "problem" at low RPM's. I like the way the cam comes on at the top end. I don't care about the 8-9 inches of idle vacuum. I have no fuel injection to worry about, and I have no power brake booster to worry about.
Joe L: Why don't you like "Posilocks"? Is there any specific reason? I can tell you that they were all tight when I readjusted everything yesterday. So I have to eliminate them as the cause of the lash widening.
Again, I repeat, that if I knew that these springs were so much stiffer than stock, then I would never have let the machinist install them. I was told that they were "slightly stiffer than stock, and perfectly safe to use with pressed in rocker studs". So, if the studs have already started to pull out, then it is too late, and WHAT'S DONE IS DONE. So........stop beating me up over it.
What I have to do now is determine whether the studs have, indeed, already started to pull out. I am asking you for a method of determining this. If it is not too late, then I WILL THROW THE DAMN THINGS AWAY AND PUT IN THE STOCK SPRINGS. If it is too late, then I'll leave the go*damn things alone, and pin the studs, or put in screw-ins.
Here Are The Facts:
1. Lash was initially set at .028", using Williams/Hinckley method, on 10/15/02, odometer 00000 miles.
2. Lash was set yesterday at .025", using Williams/Hinckley method, odometer 00827 miles.
3. Yesterday, BEFORE readjusting, I laid a steel straight edge across all 16 rocker nuts. Each bank was flat, by eyeballing. So, if the studs ARE pulling, they are pulling very evenly.
4. Yesterday, BEFORE readjusting, I measured the lash as follows: .039-.039-.040-.034-.044-.038-.035-.036-.036-.030-.036-.040-.038-.036-.034-.034
When studs pull out, DO THEY USUALLY PULL EVENLY, or do one or two usually pull first. Or, is there really no way to tell.
Any good, non speculative advice here is much appreciated. Thank you in advance.
Joe
Jerry B.: Yes, the engine did have more midrange power with the wide lash settings. Yes, I realize that bottom end power will suffer with a tighter valve setting, but that's fine with me. If I wanted more bottom end power, then I would have bought a Corvette with the L75 engine instead of the L76. Also, the engine was beginning to detonate slightly due to the lack of overlap with the emasculated valve lash settings, and I didn't want to back off the timing as a "band-aid". The engine has never detonated with the correct lash setting. The only problem is, why did the lash change so quickly??????? I like the lumpy idle. I don't mind the driveability "problem" at low RPM's. I like the way the cam comes on at the top end. I don't care about the 8-9 inches of idle vacuum. I have no fuel injection to worry about, and I have no power brake booster to worry about.
Joe L: Why don't you like "Posilocks"? Is there any specific reason? I can tell you that they were all tight when I readjusted everything yesterday. So I have to eliminate them as the cause of the lash widening.
Again, I repeat, that if I knew that these springs were so much stiffer than stock, then I would never have let the machinist install them. I was told that they were "slightly stiffer than stock, and perfectly safe to use with pressed in rocker studs". So, if the studs have already started to pull out, then it is too late, and WHAT'S DONE IS DONE. So........stop beating me up over it.
What I have to do now is determine whether the studs have, indeed, already started to pull out. I am asking you for a method of determining this. If it is not too late, then I WILL THROW THE DAMN THINGS AWAY AND PUT IN THE STOCK SPRINGS. If it is too late, then I'll leave the go*damn things alone, and pin the studs, or put in screw-ins.
Here Are The Facts:
1. Lash was initially set at .028", using Williams/Hinckley method, on 10/15/02, odometer 00000 miles.
2. Lash was set yesterday at .025", using Williams/Hinckley method, odometer 00827 miles.
3. Yesterday, BEFORE readjusting, I laid a steel straight edge across all 16 rocker nuts. Each bank was flat, by eyeballing. So, if the studs ARE pulling, they are pulling very evenly.
4. Yesterday, BEFORE readjusting, I measured the lash as follows: .039-.039-.040-.034-.044-.038-.035-.036-.036-.030-.036-.040-.038-.036-.034-.034
When studs pull out, DO THEY USUALLY PULL EVENLY, or do one or two usually pull first. Or, is there really no way to tell.
Any good, non speculative advice here is much appreciated. Thank you in advance.
Joe
Comment