porsche4786

I've been thinking about using that stuff on my Xterra. Just wasn't sure how good the material is. Any input on the quality?

Finally.....found an Xterra with a manual transmission, and just under 61k miles. Glad that is all over with. When I sit at a computer the first thing I do (without even realizing it) is get on craigslist and see if anything new is on.

Pretty much .680'' exactly, unless I tighten it down on the lifter. Then it is slightly under .680. But mine only show me .XXX, after that you are guessing. Mine are not digital. I wish!

Okay...here's some photos of what the ruined lifters look like, they are pretty much all the same. The scratches on the bottom of the lifter are pretty hard to feel with your hand. I tried to get a descent shot of the cam lobes, but was having trouble with the light reflecting too much off the steel. I double checked the old lifters, and they are all flat as far as I can feel. edit: They all seem to be pretty darn close to .628''

Maybe I'll just throw a rotary in it and be done with it I'm getting antsy to get home and start looking more into the lifters themselves...I did buy the cheapest ones rockauto had.....Next time I'll make sure I get made in USA. edit: I still have the old lifters. What would happen if I tried a couple of those in place of the bad ones? I don't know which of them came from where though...

The old lifters that I took out didn't have a rounded bottom, they were all very flat by feeling them. These new ones are very obviously rounded, I'll try and get a photo when I get home from work. Just weird that the old ones were fine, but all the sudden the new ones are junk.

I check craigslist every couple hours lol. I did look at one xterra with manual, but it had some funky engine noises, and timing belt hadn't been replaced yet and it's at 130k miles...Not that's its hard to replace, just the time factor. And the noises I wasn't sure about.

Okay, what is the deal with finding used manual transmission pathfinders (97+), frontiers 4 door (99+), and xterras with a manual transmission? I've been looking for weeks and nobody seems to have much of anything (that is also 4x4). Do most of you drive auto's or manuals? I refuse to drive an auto, so I always end up looking for almost a year to find something decent.

I'll have to double check, but I'm pretty sure yes they do. Because there were two worn lifters on one far side, the middle two were fine, the other end has one fine and one bad. I was also wondering if a rocker arm shaft, if not perfectly straight, could cause extra wear on the lifters. Or if the shafts were not torqued down properly. I turned the engine over a little and one of the lifters pushed up and took the slack out. So yeah, you're right. I did notice the angle on the cam. How does the cam cause the lifters to get caved in like that? I thought it would be due to not enough oil getting there? As I understand, the cam is a stronger steel than the lifters. Too bad you can't write off a loss on your car in your taxes..... I've spent probably double what I paid for it a little over a year ago...

Ok, pulled lifters, 3 out of the 6 are rounded now, not flat.....what causes this? No oil? The cam looks to be fine, but I can't get my micrometers in there.

Ok...while my hands aren't oily I snapped a couple photos of the lower set of rocker arms (I don't know if they are exhaust or intake). The long arm pad of the rocker arm is very worn compared to the lifter pad side. The valve ends also have markings to match the rocker arm pads. I haven't pulled the upper set yet. The rocker arms and shaft mic'd fine.

Or maybe (when I take it apart) it will be one of those things that is just WAYY too obvious to see/take the time to look at. I did see a fairly worn looking spot on the drivers side cam, you could feel a slight wear on the cam (which, if you can feel it, it's probably too much). But that's by far the worst spot I've seen. And that isn't the only place noise is coming from. The lifters themselves (old ones) look ok, didn't see obvious highly worn spots.

I'm hoping it's something to do with the rocker arms or shafts, because that's easy. You have to disassemble the front of the engine to get cams out and measure them right? Or can you actually fit a micrometer in there? I'll see if I can get around to removing the rocker arms and shafts and mic them tonight. I don't remember seeing a measurement for the rocker arm pads, but I'll give them a good look over. I'll re soak the lifters as well.

I'm wondering if it was like that before I changed them...I put every bolt back in the exact hole, and rocker arms in the same spot.

Is this movement supposed to be there in the rocker arms? A couple of them move back and fourth and side to side a little. Pretty freely. http://www.youtube.com/watch?v=CygNJK1bqv0