THanks for all the help so far with this
I final finished my motor today
Its a stock shortblock, 275/215 cfm heads and a 244/244 .611/.611 sollid roller cam on a 112 lsa

Heres what i did
Started it and ran for ~13 mins at 1500-2200 rpm
Changed oil
Drove for maybe 13 miles easy on the gas. then anohter 45 regular with a couple hard pulls.

Car feels great, no vibrations, smooth while crusin.

Heres the deal.
At low RPms, mostly at idle and when started out from 1000rpm to 1600rpm there is a sqeeking noise. it is intermitant. they click are short, Start out sound kinda poppy, then an increasing pitch. then stop. Kinda random to

Scares me to death tho. all the time and $$ and i think i maybe have a near seized lifter in one of the blocks lifter bores. but i dunno.

Two more things, i have no let it idle for more them maybe 10 seconds and i have a video if you think it will help. its on a private FTP so i cant post it, but if you IM me on AOL AIM, my sn is " camarossguy2 " and i will give you the link

 

why would you run it for 13min @ 1500-2200rpm!?!?

Solid rollers HATE low RPM. granted, 2200 is prolly safe, but 1500 is PUSHING It.

is there something I dont know? that is VERY VERY bad on the rollers..


best thing woulda been to just drive it around town for 10min, then change the oil..

 

how do you nearly seize a lifter?

a squick...hmmm...aright I'l throw ideas at ya...head gasket somehow not sealing right? a header gasket no sealing right?

 

the oil pressure durring this 1500-2200 rpm was always above 50psi mostly in the 65psi range.
I figured thats what i was told to do and that was plently of Psi to keep everything lubed

 

Hey do i know you? just currious, i go to school in daytona beach.

Pretty sure, errrrr almost positive its not a leak, that would be more of a click.
I have had frined that have had this probblem, that why i think i may have it :-/
Guess i will be going back to hydrolic and ask qeustion that any joe smoe could answer in LT! tech

 

yes you do know me! as I know you!
have you checked your lash? if it's a click maybe one is too loose...I don't know...last time I heard someone having a click sound, it was eddie, and his piston disapeared....kinda hard to diagnost some' like that over the net!...

 

If that is the case then how do people run these things on the streeet? With a 6speed and stock gears you could easily run <2000rpm on the highway for long periods of time. Are you saying this would be death to the lifters?

Clarify please

Thanks!

 

exactly what i was wondering.... can you not let the car idle? lol i dont see how low rpms could damage the lifter at all. maybe he means their noisier than hydralic rollers or something?
jeremy

 

I think it relates more to flat tapped solid than rollers.....

 

What valve springs are in it? and what height are they installed at?

 

SStrokerACE
I am using cc943 valve springs. I dont know exactly the hieght, but im pretty sure its Standard. no longer valves.

I have a friend with a 396ci sollid roller and at about 2000 miles he got a bad squeek. he thought it was a belt, but turned out a lifter melted its self to the block, destroying the cam lobe and roller.
When he got the block rebuilt, the engine builder put a grove down the each lifter bore. he said it provides ALOT more oil to the sollid lifters. He also said(and i have heard for many) not to let a sollid roller car with high spring pressurs idle for more then 30 secs tops.

I desided to drive the car more, put maybe 20 miles on it today, mostly over 3000 rpm.
The sound has become LESS frequent, and not so noticeable. Hope fully this is not in my head and is in fact true. maybe it just needs a lil break in. I will keep you posted

 

oil pressure has nothing to do with solid roller oiling, it is all splash oiling. I am not saying you hurt a lifter, but what you did was VERY hard on them.


jeremy and soma-
exactly, you CANNOT let it idle, or "cruise" at <1500 rpm for extended periods. When I daily drive my solid roller(with no additional oiling provisions, I ran restrictors!) i would rev it it pretty often if I had to sit in a fast food line or such. and I never just let it sit and idle with AC on or anything of the sort.

 

Thats the first I've heard about not letting a solid roller car get down in the RPM. I know when Nu-Tek built my motor one of the first things to do was to start it up and rev the motor between 1500-2500 for about 15-20 mins to get everything up to temp and oil moving around in the motor. Nothing was ever said about not letting it fall below a certain RPM. I've always thought it was a good idea to let a motor like that warm up a bit before going out and beating on it. If thats the case then wouldn't a start up program that made it idle around 2000rpm until water and oil temps come up be a good idea?

I've heard a couple squeaks from my motor as well but its hard to tell what it is with the blower, the exhaust and everything else moving under there. Couple squeaks I've heard were just on take off from a stop light sounding like they came more from the clutch or a belt more than anything else.

Although I can't think of a factory solid roller cam'd car off the top of my head: solid tappet cams were pretty popular in the 60's and I wouldn't think a factory car would come out that couldn't idle for more than a few seconds at a time. Sure it might be better for them to stay up in the RPM a little bit, but then again so would the hole motor since more oil is flowing thru all of it. Just thinkin out loud here.

Only saving grace I can think of is that with most solid rollers, they are pretty big, and with that comes a need to keep the RPM up just so it doesn't buck you to death. I've never really heard anyone talk much about this before though.

 

Same here. I'm not choosing sides, just saying that I've never heard that a solid roller cannot be allowed to idle for extended periods or run at lower rpm (except to avoid surging), nor have I seen (yet) a logical explanation for why this would be the case.

 

Although doing a little bit of searching I did find this

"We do not advise the use of oil restrictors with our roller lifters. Crane roller lifters are designed for use with normal oiling systems. The needle bearings within are dependent on oil flow to provide lubrication and transfer of the heat generated by today’s high valve spring pressures and increased rocker arm ratios. Particularly hard on these components are prolonged periods of idling when oil flow is at a minimum but pressures are still high."

http://www.cranecams.com/master/liftmrol.htm

But that is the only thing I have ever seen or read about it. So what consitiutes 'prolonged periods of idling'? A few minutes to warm up the motor, 15 seconds at a stop light....?