Yeah I know it sucks Don't worry I would do a 455 before that lowering. How about sticking in a V6 turbo motor. Now that would be different. You should not have to be a test mule for a 350 roller cam either.
Phewwww, Good to hear that guy! I was worried for a moment It would be interesting to hear stories from other makes of V8's about any teething pains they had when speed parts were developed and put into service. Failures are far more interesting than successes, you learn the why's. For instance, the 3.25" mains on the 455, I read they were breaking cranks in development, so they increased the main dia.
Wow Joe glad you chimed in! Good to hear Im not the only one, but it sucks we have to have this issue Im sure we'll get this figured out! I'll definitely keep everyone updated as to what I discover. Im sure every other make of domestic V8 had issues with speed parts, we just don't hear of them, even the LS engine has issues
Mine is 20 and goes to 15 in drive after running for about 1 hr @ 3000 rpm. 50 lbs @ 3 grand. 70 @ 6 grand 190* engine temp
Yes Mark, it was after the roller cam was installed. Hot idle pressure use to be around 15-20, although that was before rebuild. Currently I have around 40-50psi on cold start up. After warmed up it's around 20, however after driving around awhile I will notice down to 10 psi at idle. I do not seem to have any oil pressure issue at mid to higher rpms, at least not currently. The lifters just always seemed a little noisy to me, especially on driver side. I wasn't overly concerned until hearing you were also having this issue. What are your cam specs? I am interested to see if the lift is close to mine. I have to to try and find some of my build info
I ran Morel hydraulic roller lifters for a few years in my engine, I didn't have any of the issues that people are speaking of. We put a set of Johnsons in it this time to test them out and we didn't notice any difference from how it was before with Morels. The Johnsons do require a .200"-.225" longer pushrod if I remember correctly.
So Mark, Are you saying or just thinking, that those style Morels you have are the low oil pressure problem? That front cam jrnl could be in fact ground undersize from blending the groove weld job. If the Johnsons don't raise it, what's next????
Seems to me this is a witch hunt decision that's derailed him from the original problem. ....SQUIRELL!!!...
after all this I would be plucking the cover and dotting all my I's and crossing my T's. I think I would had checked that b4 buying any high dollar parts
If your LSA is 113 than I have the identical cam/ rocker set you have. Not sure what this tells us other than we have a similar problem, but still interesting. I cannot say for sure if I have Morel lifters. I did not assemble the valvetrain and cannot remember anything from 2 years ago when I purchased them. TA supplied them. I would have to inquire more.
I believe it is 113 off the top of my head. Take a look at Marts pic of his lifters, he got his roller awhile back also, his rollers are a bit different than mine, there both suppose to be Morels.
Main reason for replacing the Morels is the noise, AND their peculiar behavior of being noisey, then all of a sudden getting quiet, their inconsistent operation is what makes me suspect of their quality, PLUS all the issues I've read of other makes of V8's using Morels. Experiencing all of this I want the Johnsons in my engine. Hot idle oil pressure, I find it odd that after my roller install my hot idle pressure dropped 10 lbs. on my old build, and same thing on this build, maybe it is from the #1 cam journal, if it is, I guess 10 psi. hot idle on 10/30 is good. I've had less on previous builds with no issues, pressure rise with rpm. no noises from the bottom end. I doubt its from the #1 cam journal, as before I'd rather have a smooth wide journal instead of two thin rails, also being Im using TA's back grooved bearings, the oil transfer groove on the #1 journal is redundant, and just another source for hemorrhage I'll find out if the Johnsons change my hot idle pressure, but the MAIN reason for the change to Johnsons are the noisey Morels, and the better quality of the Johnsons over the Morels.
