The Resurrection of (10/1998 to 01/2021, 11/21- 11/25) Elizabeth 1999 V70T5M56 Cylinder Head Job Topic is solved

Post by **bmdubya1198** » 12 Oct 2021, 23:23

abscate wrote: 22 Mar 2021, 02:55 A good day yesterday......

If you leave off the last exhaust stud you can easily swing in the water pipe gasket after the head goes on.

Head is on and torqued!

This post right here, looks like they did the head, but not the cover. I wonder how much material came off? It's crazy how precise these tolerances are. I guess they have to be, since the cover holds the cams in place with no separate journal caps.

Post by **abscate** » 13 Oct 2021, 09:21

I just checked one cam journal quickly this morning and found the depth of the head and cover are well within the error of measurement of 20 um, estimated

Ergo, neither the head nor cover were milled TTBOMK

Post by **bmdubya1198** » 13 Oct 2021, 09:48

Huh... now it's getting interesting. This is crazy, what the heck could be binding them?

Post by **abscate** » 13 Oct 2021, 10:02

Yeah, Ive got this one cued up for when I solve it....

Blooper Thread

Post by **BlackBart** » 13 Oct 2021, 10:04

OK, let's go back to the beginning and think this through. This is the same head and cam cover that came off the engine? Not milled down. Same cams? Not swapped parts? Are the cams swapped exhaust to intake somehow? Are the lifters jammed up or stuck in the bores?

Post by **abscate** » 13 Oct 2021, 10:11

same head and cover
Bottom of head milled, not top, nor cover
Same cams, not swapped.
Pretty hard to mix up a VVT and non VVT cam.

Post by **BlackBart** » 13 Oct 2021, 10:13

Are the lifters loose in the bores? Can they all move?

Post by **BlackBart** » 13 Oct 2021, 10:15

A broken valve spring jammed in there?

Post by **BlackBart** » 13 Oct 2021, 10:27

If there were no valves and lifters, the only restrictions would be the bore circles between the head and the cover. Assuming no interference at the wheel end seal grooves etc. Assuming no corrosion build up on the bores or the cam journals. Assuming the cam wasn't dropped and got a bend somehow.

That leads me to the valvetrain.

Post by **BlackBart** » 13 Oct 2021, 10:36

I see above you've looked into those questions already.

erikv11 wrote: 12 Oct 2021, 15:17 If you check one cam at a time, be careful to not distort the cam cover.

Good point here - is that cover flat flat?