General head machine work question

[Mr Deagle]

there are no bearings in the m10 head.......well just plain bearings, but they will show some wear

and duh, what do bearings do? they spin!

[Jean]

Well, i'll have it back from the shop tomorrow and take some pics then you experts can tell me if I should dump it or not :up:

[MarshallM]

Sonic cleaning will also ensure a perfectly clean head. Improves cooling by getting all the scalies off the cooling passages. You cant magnaflux a aluminum head due to it being non ferrous but you can have them dye it and look for cracks or pressure test.

[Jean]

Well here it is, what the shop meant is where the cam rotates there is some wear. What do you guys think, toast ?


Bigger size pictures are here - http://www.briangt.com/gallery/album55















This is on the distributor side, not sure why the whole on the left side looks like that ?

[FredK]

Yikes. I'm no expert, but those look like some serious grooves!

[backtrail69]

That looks pretty scored. It is really hard to tell from the pictures though.

[euroshark]

Lack of oil probably did that... I think it's toast.

[Mr Deagle]

buy a schrick 316 cam and bore them out!

[Jean]

So how would this thing run if I put it back together ? Would it vibrate a lot, be loud or else ?

I was hoping to just junk the head I have on the car and install something fresh....now looks like maybe I should remove the head from my car and have it checked / cleaned. This engine will eventually be removed to make room for something else so buying expensive / rare cams etc isn't an option .

[Jean]

Ok forgot to ask this, someone suggested I ask on the forum. Is there a way to bore the camshalf holes out and fit a bearing in them ?

[ivo316]

You have to keep in mind that here sometimes we do not have access to parts, so...

Here in Chile machine shops will bore those holes and install thicker bearings, or else, bore the hole and insert a sleeve to accomodate stock bearings, but you will have to resurface your camshaft also, those grooves are too much, I don't know if the total bill for repairing the head plus the camshaft and the new bearings will be less than a used fully assembled head (in good condition), you have to do your adding up and see what's best for you, but since so many people are swapping their engines i think you could find a reasonably priced head (with camshafts) somewhere.

Everything can be repaired, but sometimes it's too expensive.

Good luck. ;)

[Jean]

Yep, I decided against it. I MIGHT remove the head I have on the car and have a shop refresh it, now I have some spare valves/rockers/cam in case.

Decided not to spend anymore on the m10, gotta start getting m50 parts.