Alright all done. This car was my arch nemesis until the end. So i locked the camshafts to do the timing and was unable to get it right, i preloaded the VVT and all that stuff. I tried getting it twice, and i would spin it by hand to make sure it was good and it kept hitting something so i finally t...

Alright update, it turns out that the 850's have the 7 mm valve stem diameter so i pulled the valves from a 96 850 and they matched the 99 v70xc perfectly. I have the engine mostly back together, i am going to make myself a camshaft lock tool so that way i KNOW the camshafts are in the correct posit...

Alright, no offense the the wonderful people here on this forum but i hate volvo with the passion of a thousand burning suns. Did you know that they have 2 different thicknesses of valves for each vehicle for each year. Identical in all aspects with regards to the actual valve diameter and length, h...

Thanks bill, i did some searching around and it seems that the pistons pretty much never get damaged enough to need repairs from a valve hitting them. Question remains though should i replace the cylinder head? or just the valves? i am going to pull the valves out tonight with my spring compressor a...

Alright i opened her up today, head bolts where not that tight, i think what happened when it was having the random misfires it cause the timing belt to jump because all the valves hit the pistons, i think that is what caused the head bolts to stretch a little more which is why they were not as tigh...

Oh and i am assuming i will need to replace some valves, i am just going to pull some good ones from a junker, what other models are compatible for the valves for this car, again it is a 99 volvo v70 xc AWD turbo 2.4l

Alright, now quick question when i did the timing before i used the timing marks on the camshaft gears, can i just use the ends of the camshafts with the slots to put them in at TDC or do i have to use the timing marks?

If you suspect that you have a blown head gasket you can rent this too from autozone

http://www.autozone.com/autozone/access ... tid=554457

Alright i confirmed the timing was good so i bit the bullet and removed the timing cover and camshafts in a last ditch hope that i was just getting the timing wrong. I ran the compression test on each cylinder with it at the bottom that way if the valves are all shut which they should be, you would ...

regent- I just replaced the head gasket, it could have blown from the the misfiring possibly? Remember it did run for about 2 minutes AFTER the head gasket was replaced so i know the head is not warped or cracked or it wouldn't have run in the first place. I am wondering if when it misfired it cause...