I have one here that is collapsed on my computer table and it is real close to 1/2", no where near 3/4
...BTW your Bieber avatar is awesome.-Malone
That was measured. Maybe close to 5/8
Not sure what's going on any more. I totally flattened the lifters (though some are still being stubborn about it) and put in one lifter at a time, bolted the cam down and I can compress the little spring inside the lifter without opening the valve. So it would appear I don't really have a problem other than lifters that were pumping up too far.I'm currently soaking all of the lifters in some toxic chemicals to try and loosen whatever is keep a few from wanting the bleed down. There are about 3 that I can squeeze over night and they'll flatten but as soon as I let up on 'em they don't want to squeeze all the way down again. The rest seem to be totally empty.That minimum VC surface to stem tip measurement in the book may be not the limit but probably leaves enough room for valve wear over the years.My plan is to empty all the lifters and put it all back together and see what happens. I have a HG on the way in case I find that I do have to grind the stems shorter.
Check valve in the lifter or you mean the relief valve in the oil pump? Oil pressure is lower than I like so that can't be the issue. I got the lifters working good now, I think they had something gunked in there and weren't bleeding down.
didnt you REPLACE the lifters tho?
Quote from: R.O.R-2.0 on February 10, 2012, 02:35:17 pmdidnt you REPLACE the lifters tho?No, I didn't think it would be worth it if these were still fixable, which they were I guess they seem to be working fine........