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Crank and CAM timing, no marks on CAM sprockets

Tiny
FLAGMAN12
  • MEMBER
  • 1992 VOLVO 960
  • 2.9L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 250,000 MILES
I have come across contradictions about crank timing. I have seen statements saying 2.9 engine does not time on number and others say it does and no marks on cam. I need to know how the cams set with no timing marks. Thanks, Ron
Sunday, October 22nd, 2017 AT 6:16 AM

13 Replies

Tiny
JIS001
  • MECHANIC
  • 3,408 POSTS
Hope images help.
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Sunday, October 22nd, 2017 AT 2:46 PM
Tiny
FLAGMAN12
  • MEMBER
  • 13 POSTS
I have those same images but there are no marks on the gears and the crank has that mark on the block but nothing on the gear teeth that I was told existed. I have no trouble finding TDC and all that, I have built many engines of different types but I have never failed to have a guide as timing marks etc, I read one report that there are timing marks on the back end of the cams but did not say how they were disfigured and how to read them. The controversy about which cylinder the timing begins I have never found an engine that did not start the timing on number one cylinder if it is different than number one maybe that is why I cannot find marks on the crank gear. I really appreciate you getting back to me and if you can shed some light on the issues I have stated it would be great. Thanks a lot, Ron
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Monday, October 23rd, 2017 AT 12:24 AM
Tiny
JIS001
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Can you take a picture of gears and post them on here? Also, clean the cam gears as well to see. The crank gear will most likely have the cut out in back of the gear that will look like a "V" if one cut out that lines with the pump. If two cut outs then pump lines in between both.

If you lost the cam and crank timing from a broken belt then stop what your doing and pull the head to replace some bent valves. But if you still need to set up the timing then you will need to buy the cam and crank lock tool.
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Monday, October 23rd, 2017 AT 7:05 AM
Tiny
FLAGMAN12
  • MEMBER
  • 13 POSTS
I pulled the head because of a blown head gasket and I made a cam locking tool, but I will check the back of the gears for any marks, I read that there is some type of mark on the rear of the cam but I don't know what to look for there. Thanks a lot for getting back to me i'll look for that mark you mentioned. Ron
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Monday, October 23rd, 2017 AT 12:54 PM
Tiny
JIS001
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The bacl of the cam slots would need to line up like the immage. That is how the tool works to line up. Hope this will help you out more.
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Monday, October 23rd, 2017 AT 1:46 PM
Tiny
FLAGMAN12
  • MEMBER
  • 13 POSTS
Is it the same for both cams, and that is the rear of the cam by the firewall if I understand correctly. Thanks a lot this looks like it will work. Ron
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Tuesday, October 24th, 2017 AT 1:58 AM
Tiny
JIS001
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Yes both cams.
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Tuesday, October 24th, 2017 AT 7:40 AM
Tiny
FLAGMAN12
  • MEMBER
  • 13 POSTS
One last question the manual I have says timing 16 degrees and on the cover on top the cams it shows timing marks from 0 to 25 can you tell me how to deal with that. Thanks ron
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Saturday, November 4th, 2017 AT 3:21 AM
Tiny
JIS001
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As long the timing is lined up correctly you shoild be fine. The computer controls the timing.
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Tuesday, November 7th, 2017 AT 10:53 AM
Tiny
FLAGMAN12
  • MEMBER
  • 13 POSTS
Thanks for some reason information about this car is all over the place and often just wrong I don't know why that is but I try to get around it with the help of people like you. Thanks again best wishes ron
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Thursday, November 9th, 2017 AT 12:34 AM
Tiny
JIS001
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Your welcome. Hope vehicle is up and running.
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Thursday, November 9th, 2017 AT 9:26 AM
Tiny
FLAGMAN12
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  • 13 POSTS
It is take care
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Friday, November 10th, 2017 AT 11:32 PM
Tiny
KEN L
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JIS001 is one of your best!

Glad you could get it fixed, that kind of problem can be tough. Please use 2CarPros anytime we are here to help

Cheers, Ken
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Monday, November 13th, 2017 AT 3:06 PM

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