No, they're not...
$15.98 x 16 = $255.68 (and that's for only a 358# open pressure spring...)
https://www.racingsprings.com/index....ring-3981.html

But, they're wonderful things. ;-)


Adam

 

This makes complete sense.

There's some good Mike Jones (Cam King --not "Mark Jones" @ Vortec Pro) quotes that the problem with hyd lifters is bleed down / leak down far more often than it is pumping up. The higher pressures on the lifter plunger are forcing the oil out faster than it can be replenished.

-There's a LOAD of internet thread with people complaining about hyd roller lifter noise with the standard Morels and finally Chris Straub got back to a bunch of them that oil viscocity, or specifically the centistroke ratings on the oil were the issue and he recommended people switching to heavier weight oil / oil with a certain centistroke rating or above (it seems that the higher viscocity oil will leak out of the lifter slower and can extend the pressures+time that it takes to bleed down the lifter.

I know when I bought my aggressive hyd roller cam from Mike Jones I was told that I would need to go with a good low bleed-down rate / short-travel lifter; Mike recommends that my lobe series is purchased with his lifters, but when I let him know I had the short-travel Johnson lifters, he said that they'd be fine; he designs the lobes for a .750" roller wheel and I think he said that with the .650" or .700" roller wheel that I'd lose tiny, unnoticable amounts of lift and duration, but they'd work fine. -High quality / low bleed-down rate, short travel SBC retro rollers are just astronomically expensive and they've only gotten worse in the past year. I don't understand why retro rollers are so much cheaper for the Ford guys, LS, OEM roller blocks; they're cheaper in everything other than SBCs... (The Johnson ST2112SBRs are now $835 a set from Johnson! -I thought they were crazy like 2 years ago when they were $625 or $650 -I found my set on Craigslist for $350...)

Like Gkull said, going with beehive springs and their lighter, smaller keepers lets you reduce the spring pressure and not apply as much pressure to the lifter plunger so you don't force all the oil out of them as soon. (But moving to beehive springs or a set of high quality Johnson, Morel, or BAM retro roller lifters is NOT going to be cheap, so it might be worth seeing if oil viscosity changes help. -Big Joe Sherman was another guy who made generalizations that he would usually the best dyno numbers on SBCs with heavier weight oils simply because the lifters wouldn't bleed down. It's a problem on some of the Ford factory lifters, too and I think Ford released a stronger spring and an updated plunger design??... They made some kind of change at some point that helped their oem lifters bleed down slower, anyway.)



Adam

 

Here's the related YB thread on the Morel lifter noise issue and oil weight and centistroke ratings.

He now recommends an oil with "a centistroke number of 15 or less at 100 degrees C".
https://www.yellowbullet.com/threads/customers-email-on-morel-lifter-noise.2553945/page-11
https://www.offshoreonly.com/forums/general-q/347016-oil-viscosity-morel.html

[Edit] I seem to have remembered the problem backwards; the problem seems to be made worse by heavier weight oils vs. thicker weight oils... Now I don't know what to think...

It's a doozy of a thread with tons of people pissed off that they're being told what oil to run by a lifter mfgr / major reseller...
Adam