Ducman82

Picked up the M28/44 from a fellow shark here in ohio to play with. Was a timing belt fail motor. most exhaust valve are trash, has a few of the valve cover stand offs broke in the head, but nothing major.

does this look like a deal breaker?



here is a pic of what the cylinders look like. pistons are ok.





what do i need to do to "update" this S3 heads. i hear i need the S4 tensioners... but any other tricks to a head rebuild?

Imo000

What do the cylinder bores look like?

Ducman82

They look pretty good. No scratches

Imo000

Is there a ridge at the top?

Ducman82

On the cylinders? Not that I can feel

OTR18WHEELER

...as per the first pic of the block, you've prolly seen this already.
http://dwaynesgarage.norcal928.org/1...k%20Repair.htm

danglerb

Should be fine for a table, what are your plans for it?

I don't think the water pump impeller has a very tight tolerance, but maybe somebody knows a spec to check. Greg has a tool and fix, or do you need perfect for a special reason?

IcemanG17

the water pump can be fixed.....the bores are much more expensive to repair

FreedP

Ducman82

Going to take my time and build this sucker for boost. i can completely take her apart, send the block to Kuhn for a little bore and plate treatment... or leave the bottom end alone and just roll with it.

cleaning her up right now. if i cant use this one, im sure i can find others. i can always sell the cams and make my cash back.

928DK

"Jegs" and others have electric water pumps if you want to go another way (more modern ?)

WallyP

Putting an electric water pump on the 928 engine could get complicated...

NoVector

Dwayne has an excellent "how to" for the water pump block repair.

http://www.dwaynesgarage.norcal928.o...k%20Repair.htm

BC

What is the piston tolerance number?

Ducman82

group one.

im just trying to tell if the water pump impeller area is to bad.. does not "catch" my finger nail much.