OK, I am still pondering how much to spend on the '89 760. Even when I get the turbo problem fixed (http://www.brickboard.com/RWD/index.htm?id=924522) - I have to do something with the valves/head. it really sounds lame.

I am wondering if it would be a good idea to replace the head with a head from a later (like 94-95)940 with the sodium valves? Or should I just get this head rebuilt?

You guys have been great in helping me formulate a plan to get this one back to snuff. Thanks.

--
'89 764 (110K), '94 940T (180K) , '92 745T (totaled 2-10-05 RIP)

The '89 760T has a B230FT, same head as '94-'95.
The block is different.

If it's the valves that are clacking, then you should try adjust the valve lash before you swap out heads, If you have clean plugs but, you are still blowing oil, then the valve seals are gone.

You MIGHT want to swap heads or do a valve job. Personally, I would do the valve job rather than swap heads. You'll have even more headaches if you swap heads that will fall into the "Undocumented features" sections of being a major PITA !!!

Try adjusting the valve lash first, and REMEMBER a loose valve is a happy valve even if it makes a bit of chatter.

What you might find is a few of the valves out of tolerance, the procedure is not difficult,

Mine has 195K on it and it people ask me if it's a diesel, I told them NO but, one of our cats is named Diesel.

"REMEMBER a loose valve is a happy valve even if it makes a bit of chatter. "

That really depends on "how loose?" All cams have a clearance ramp, if contact takes place in an area other than the clearance ramp you end up with impact loading resulting in a lobe failure.

I have analyzed a number of cams with lobe flank failures so my recommendation would be not to exceed .005" loose.

I'm not really an expert but it's what I do for a living at Clevite Engine Parts.*

Our parts were on the latest winner at Daytona.

Thanks ...Rich
At one time I almost bought a rag of a 240 wagon w/250K+ on it. The sound of the valves in the 760 remind me of that car. It is just so different from my wifes 940.

I will get though this. I just expected this car to have less to tend to. It is a process.

I still love Volvo. I have not defected.
--
'89 764 (110K), '94 940T (180K) , '92 745T (totaled 2-10-05 RIP)