Videos of 99 S70GLT head replacement

Post by **rmmagow** » 07 Dec 2012, 10:24

How can a valve be replaced if the head is on the motor? I can't see how that's possible.

Post by **cn90** » 07 Dec 2012, 10:27

E Showell wrote:Thanks cn90. I've seen the Tracy's material and thought it looked pretty good. I am hoping to do a much more surgical strike and just get in with the cams out and replace seals and perhaps one burnt valve or a broken spring. Hoping to do same in situ w/o removing the bottom portion of the head and thereby avoiding the entire head gasket aspect of things. To me, assuming that is all that is needed, it seems like a much more time efficient/cost effective approach.

The Valves are in the bottom portion of the cylinder head.

Post by **E Showell** » 07 Dec 2012, 12:03

In other words, nice try, but, forget about it. It's all coming off.

Post by **rspi** » 07 Dec 2012, 16:53

Yes, the valves poke into the bottom of the head, that's how they make contact with the pistons when you loose a timing belt part.

Here is a direct strike I did with a head removal. Once you get the head off you will need a valve compression tool to compress the valve spring (from the top), remove the valve spring keepers, which will let the valve slide out of the head. A lot of shops will replace all the seals, relap the other valves and clean up the head between $175 - $325, you can call and ask them and they will tell you the cost. As you can see from the video above, it's a lot of work.
http://www.atthetipwebs.com/technologyi ... gasket.htm

Ok, I have a couple of questions...

1. Did you have smoke coming from the tail pipe from time to time or anytime?

2. Were you always and only using Volvo/Mann oil filters?

Thanks for your response.

Post by **E Showell** » 07 Dec 2012, 17:29

No smoke at any time. Always used Mann oil filters. Did own changes with Mobil 1. Front O2 sensor failed and probably had not been changed in 175K miles. Running 87 octane.

bw77 · Post by **bw77** » 14 Dec 2012, 09:10

The 4th part in the series is now online.

Post by **Ozark Lee** » 16 Dec 2012, 14:04

I think he could have just used the timing belt change procedure (rotate 90 degrees past the marks and then back CCW to the marks) to set up the cam timing if he hadn't loosened the exhaust cam sprocket. Since he didn't loosen the CVVT hub he wound up doing a partial portion of the full procedure that is used if the hub has been removed.

All and all a good job even though I'm not a real fan of the copper spray.

...Lee

Videos of 99 S70GLT head replacement

Re: Videos of 99 S70GLT head replacement