M62 Vanos block with M62 nonvanos heads?

[PanzerShrekd]

I am still working on my supercharger project and got an offer from a friend for a dirt cheap if not free M62 vanos engine, and in the junkyard there is a nonvanos engine with good heads but a hole in the oil pan, I can see up into the internals and that a rod is bent but I dont see much carnage inside of it. I have a non vanos car so I want to stick with that, but from what i can tell the head gaskets are the same part number so i would assume they would bolt up? Any input?

Edit, just realized the water-cooled alternator is a problem, but if the junkyard block is salvageable, are the pistons/ crank interchangeable?

[seagreen323i]

I am still working on my supercharger project and got an offer from a friend for a dirt cheap if not free M62 vanos engine, and in the junkyard there is a nonvanos engine with good heads but a hole in the oil pan, I can see up into the internals and that a rod is bent but I dont see much carnage inside of it. I have a non vanos car so I want to stick with that, but from what i can tell the head gaskets are the same part number so i would assume they would bolt up? Any input?

Edit, just realized the water-cooled alternator is a problem, but if the junkyard block is salvageable, are the pistons/ crank interchangeable?

I wanna say no, from what I was told the m62tu has valve intentions on the pistons where the m62 does not. I think you run into valve clearance problems. I'm not 100% on that but I remember being told that at some point. The pistons/rods should be interchangeable.

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[topaz540i]

I’d imagine the cam timing chains aren’t going to line up with the sprockets

[JimLev]

The tu pistons do have reliefs for the valves.

[Jaaap]

There's some good info in this thread too:
https://www.bimmerforums.com/forum/s...-use-M60-heads
Although there is some confusion between M60B40, M62B44 and M62TUB44 so read carefully.

[wagons ho]

Yes, M62TU short block is backwards compatible.
Just put your M62 heads and timing cover on.

[PanzerShrekd]

Reviving an old thread, if my buddy still has his vanos engine I will be attempting to put non vanos heads/cams/ timing system/ covers on the vanos block and lower end. Will update if it goes together.

[wagons ho]

No if's. Standard deal with the shortage of m62's.
Remember, m62 drivers side chain guide is different than the one on a m62tu.
But if you use the proper studs that the plastic guide clips onto, you can use it instead on an m62.
The osv's can be swapped as long as you have the appropriate drain tube.
I knew they were different, but never bothered to check if you could use the guide interchangeably with each others osv. You can, now I know.

M62
20220105_185544.jpg
M62TU
20220105_185731.jpg

[PanzerShrekd]

No if's. Standard deal with the shortage of m62's.
Remember, m62 drivers side chain guide only works with m62 OSV.
But you can use the m62tu full plastic chain guide with the m62tu osv and drain tube.
But no mixing and matching.

I will be grabbing a blown engine from the junkyard on friday and then attempting the frankenstien of the two over the coming weeks. When you say the guides osv and tube could you provide part #s in differences? If it helps I plan on only having the M62 Vanos block, crank, rods, pistons and oil pump. Everything else should come from the blown non vanos.

[wagons ho]

I will be grabbing a blown engine from the junkyard on friday and then attempting the frankenstien of the two over the coming weeks. When you say the guides osv and tube could you provide part #s in differences? If it helps I plan on only having the M62 Vanos block, crank, rods, pistons and oil pump. Everything else should come from the blown non vanos.

I had to go back and revise my post. I knew they were different, but never bothered to check inter compatability
Now we know.

[PanzerShrekd]

I had to go back and revise my post. I knew they were different, but never bothered to check inter compatability
Now we know.

So I can just use the Vanos OSV and be good? Or would I have to swap the nonvanos tube and the osv to the vanos block to use non vanos timing guides? Thank you by the way!

[PanzerShrekd]

I wanna say no, from what I was told the m62tu has valve intentions on the pistons where the m62 does not. I think you run into valve clearance problems. I'm not 100% on that but I remember being told that at some point. The pistons/rods should be interchangeable.

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If the pistons have valve indentions on the vanos and they do not on the non vanos, wouldnt that just equate to lower compression not valve clearance since I am using non vanos heads? My goal is to purposefully make a slightly lower compression engine to handle the supercharger reliably.

[wagons ho]

Total cc drop from piston pockets is negligible. Heck, if you surface the head .003", you probably covered the loss.
And yes, pockets are more clearance, ot less.
Gapping the rings is more important than compression drop with the centrifugal s/c.

[PanzerShrekd]

Total cc drop from piston pockets is negligible. Heck, if you surface the head .003", you probably covered the loss.
And yes, pockets are more clearance, ot less.
Gapping the rings is more important than compression drop with the centrifugal s/c.

I was planning on gapping rings and running the thicker head gaskets either way I went, I was just confused as to how pistons with indents made clearance an issue. Quite honestly I may just use the vanos block and nothing else, still waiting to see how things work out.

[seagreen323i]

I was planning on gapping rings and running the thicker head gaskets either way I went, I was just confused as to how pistons with indents made clearance an issue. Quite honestly I may just use the vanos block and nothing else, still waiting to see how things work out.

Just realized I flipped it around in my head. Ignore what I said.

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[jicaino]

No if's. Standard deal with the shortage of m62's.
Remember, m62 drivers side chain guide is different than the one on a m62tu.
But if you use the proper studs that the plastic guide clips onto, you can use it instead on an m62.
The osv's can be swapped as long as you have the appropriate drain tube.
I knew they were different, but never bothered to check if you could use the guide interchangeably with each others osv. You can, now I know.

M62
20220105_185544.jpg
M62TU
20220105_185731.jpg

boy, the M62TU OSV is flimsy as f**k

[Nfs021]

boy, the M62TU OSV is flimsy as f**k

It really is. The original on my 540i was trashed when I did the timing chain guides on it. Thank god they are SO much easier to replace on the S62.