Automotive question

[timswi]

I don't think that the rockers are adjustable? Been a long time since I've been in one. I wouldn't take anything apart yet. Put some stuff in the oil for sticky lifters and see if that don't clear it up first.

I'm guessing it's a 305. If it is the rockers can be adjusted somewhat, but not much.

 

[Toyboy]

I'm guessing it's a 305. If it is the rockers can be adjusted somewhat, but not much.

Maybe, but I'm thinking it's solid lifters you adjust not hydraulic lifters which are normally self adjusting. Like I said, been a long time since I've been in one.

 

[lostcause]

Maybe, but I'm thinking it's solid lifters you adjust not hydraulic lifters which are normally self adjusting. Like I said, been a long time since I've been in one.

solid lifters? possible, but if you had them, i'd think you would remember that for certain. solid lifters are generally only used when you have something that turns a fairly high rpm, 6000+ rpm, give or take. at that high of an rpm, the hydraulic lifters can't keep up as well. most all vehicles use hydraulic lifters because they are less stressful on the rest of the valve train because of the cushion provided. they also handle slight out-of-adjustment conditions better due to this, but it doesn't mean they don't have to be adjusted.

 

[gregsons]

Yes its a 305 ci engine it had hyd lifters im going to check to make sure they (rocker) are tight and change the fluid and baby it around town. If that dont work ill have to get into it a little more, take the head off.
Is it true that these can go bad with lack of use?
Ill get pictures up this weekend thank again for the help.

 

[tommygun]

rockers are adjustable,sometimes adding atf will help quiet lifters

 

[Diamondpilot]

rockers are adjustable,sometimes adding atf will help quiet lifters

I was going to suggest this also but thought I would take a whipping here for saying it. Maybe put a 1/2 qt in and drive it around a few miles then change the oil.

At the end of the day its a old car, not perfect. If you go fixing everything you will never make any money. I can not imagine a 84 anything is worth much.

Chris

 

[timswi]

I was going to suggest this also but thought I would take a whipping here for saying it. Maybe put a 1/2 qt in and drive it around a few miles then change the oil.

At the end of the day its a old car, not perfect. If you go fixing everything you will never make any money. I can not imagine a 84 anything is worth much.

Chris

If it's an 84 Monte Carlo SS it could be worth something...They still bring a nice buck around here if they're nice.

Few if any V8's in that era had solid lifters, most all domestics ran hydro's. If someone built the motor, all bets are off.

Not sure I'd personally go the ATF route. I'd do what I mentioned prior. If the tick is slight, the rocker can be snugged a bit...Have to be careful doing that though. If the lifter eventually releases, you could have a slightly open valve. A light tweak to quiet the rocker shouldn't be an issue, there's probably enough play in the system to handle it. I've done this in the past.

 

[Soundguy]

i think i'd change the oil and put in a can of seafoam AND a half quart of MMO.. run the bajeebers out of it and see what it does.

I've had valve/train noise from a setting engine thet went away with new oil and solvent based addatives.. then switch to a good oil on it's next change..e tc.. er.. that will be the new owners job then to keep it serviced regularly and not let it set and sludge up.

soundguy

 

[hawkeye08]

I don't remember if that one has roller lifter or tappets. If tappets, then make sure you use oil that has the zinc/phosphorus needed to help those survive. I had a cam go flat because I changed the oil on a lightly used 73 chevy. It had double valve springs and high lift cam. Most of the new oils do not have enough of the zinc/phosphorus additives for the old engines. You can buy several brands of oil, specific for the older engines or you can buy the additives and add it to normal modern oil.

 

[Soundguy]

sounds like a good candidate for a quality C rated 15w40


soundguy