I agree with Paul L. Since you have to remove head
,you may as well do valves & seats. Perhaps they will only require compounding. This means new valve seals
& head gasket
,so you might as well get the complete de-carb gskt kit. Since injectors must come out,may as well get them tested if you can,though if engine
has been running smooth,personally I would not be too concerned-your call.
Just to make your Christmas
complete,you may want to consider a new SS exhaust
ellbow & of course new gskt. here is link to a source of SS ells for various engines Volvo Penta Stainless Steel Exhaust Elbow 840690 Fits 2000 2001 2002 2003 | eBay
No personal experience with this supplier but this is the way I will go next time.
I keep 2 exh. ell gskts on hand at all times as I have had no luck in re-using them. I havehad weeps from the ell to head joint from time to time. I also replaced the 4 ell fastening bolts with new SS ones that I got from Bolt Depot? as my originals were rusted thin first time I cleaned ell. Also,the original bolts don't go very deep into the head threads & one is feeling a bit mushy-ready to strip.Longer bolts wouldn't hurt as the space below them is hollow AFAIK.
Also ,I suggest you go thru your parts
diagram & order a bunch of spare rubber seals
for the coolant
piping on this engine
. IIRC there are 4? different styles used & $20-30 will buy a bunch.It is useless to re-use old ones-they will leak.I use a bat. terminal wire brush-looks like a baby bottle brush-to clean the "sockets" for these pipes,a new seal & petroleum jelly Vaseline when re-installing pipes & have had excellent results.