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76

Omega General Help / Re: Issue with timing belt marks

« on: 18 April 2023, 18:53:31 »

For the belts with two sets of marks. The white marks are for engines where the lower idler roller is immediately above the crank pulley. For later engines with the lower roller slightly higher and offset towards the nearside, you would use the yellow marks. Usually the belts have double yellow crank marks and single yellow crank marks for cam sprockets 1 and 2, so for the later engines you would use the yellow marks and the remaining white marks for cams 3 and 4. There shouldn't be yellow marks for cams 3 and 4 on the belt, so it's important to observe the correct rotation when mounting the belt.

Usually the later engines have a lower idler pulley without eccentric adjustment. The earlier engines do have the eccentric adjustment for the lower idler pully. Given that Gates part number XS035453XS is being fitted then it should include a new non-eccentric idler roller and the required screw.

Regardless of the engine type or the backplate and tensioner and idlers that are fitted then all the belts have the same construction, length, tooth pitch and number of teeth. Just that old stock belts might not have any yellow marks.

In any event you don't need the marks on the belt and probably shouldn't rely on them. Rely on the timing gauge.

I decided to fit the belt clockwise, don't know why I started going counter clockwise first time. I used the double white marks for the crank and on one set of cams the yellow marks lined up, and the other the white marks lined up, can't remember what side it was, but got all the marks lining up. i also had to fit the bottom roller on after fitting belt as due to it being a tad tight to fit over the roller. I seen this on the TB video and think I had to do that before as well.

Had to adjust cam bank 1 and 2 with eccentric adjuster to bring it clockwise after doing first rotation, 3 & 4 lined up fine first time. Then done final rotation and everything looked fine using crank lock and cam checker plate.

https://photos.app.goo.gl/Vqfd2PJiQZuZNXyM8

77

Omega General Help / Re: Issue with timing belt marks

« on: 18 April 2023, 07:24:37 »

No worries at all You'll get it spot on, I'm sure.

Usually when I fit a V6 cambelt kit, I get it almost spot on by the first spin, sometimes needing just a couple of minor fractional corrections. But, fitting my own (on the project) last week, I ended up making small adjustments and rotating the engine about 8 times until I was truly happy with it.

No shame in that. Because you know when it's done, that it's set up ab-so-lutely cock-on

The first time I done an omega belt it went fairly straightforward, but when I done it next time round with a gates kit could I get it to work NO  must reinstalled it about 6 times, and spun it over enough times to do about 30 miles on the odometer.

I think the problem was I was using a pre-facelift kit on a facelift so that other adjuster, and the marks obn the belt, just totally threw me.

78

Omega General Help / Re: Issue with timing belt marks

« on: 17 April 2023, 21:18:16 »

It's a while since I did one but if there's a rotation mark on the belt, that's the way it needs to go.

If you meant which way do you route the belt, then the later non-adjustable lower roller is done anti-clockwise, and the adjustable clockwise.

Yeah I totally forgot since last time I done it, conventionally on any other belt I've done you always run all the slack to the tensioner, but that was on single cam engines. I'll need to dig out the cambelt DVD for refresher!

If you get really stuck, I'll fly up to you. I'm off work for a while. I do have another cambelt  I've promised to do first, but, if you're stuck without a car I'm sure there can be some negotiation

That's very thoughtful of you  although I should be able to get it all sorted, as I've done it a few times before and usually don't let things beat me! I'm trying to get it all done by the end of April so I can get it taxed and back on road, putting all the bits back together, including the scuttle area and wipers and the breathers and bits I'd removed to do all the other work. 

Cheers

G

79

Omega General Help / Re: Issue with timing belt marks

« on: 17 April 2023, 19:31:52 »

It's a while since I did one but if there's a rotation mark on the belt, that's the way it needs to go.

If you meant which way do you route the belt, then the later non-adjustable lower roller is done anti-clockwise, and the adjustable clockwise.

Yeah I totally forgot since last time I done it, conventionally on any other belt I've done you always run all the slack to the tensioner, but that was on single cam engines. I'll need to dig out the cambelt DVD for refresher!

80

Omega General Help / Re: Issue with timing belt marks

« on: 17 April 2023, 19:29:59 »

Looks like perhaps a tad too much slack between cams 3 and 4. You can, with the locking tool in place, gently rotate the pulleys using a t50 socket (or sometimes by hand) to get the marks sat right.

I don’t personally use the timing marks on the belt - just the setting kit

I tried that with the other set of cam locking tabs which seemed very loose, whether that was a good thing or not I don't know but swapped it for the KM ones which are tighter.

81

Omega General Help / Re: Issue with timing belt marks

« on: 17 April 2023, 16:22:05 »

I just realised is it clockwise I'm supposed to go not t'other way?

82

Omega General Help / Issue with timing belt marks

« on: 17 April 2023, 15:45:02 »

3.2 TB replacement
Gates kit Part number: K035453XS

Lined up the yellow double mark on the bottom pulley, slotted in the locking tab, started working my way up counter clockwise from the pulley, got to the first cam (4th cam), started working it round and then over to the 3rd cam and it doesn't look very happy with the teeth on the belt on 3rd cam.

I was using cam locking widgets from an older locking kit I had that felt a bit loose, so swapped those with the ones from the kent moore locking kit I had, didn't seem to make much difference.

I bought the kit opened, but not used, off a fellow so I'm wondering now is it the wrong belt, or for the pre-facelift. It's got the double yellow and double white lines, with only white marks for the cam line up marks.

It seems to almost line up here cam 4, but I feel like the line should be above the tooth not the gap, the cam and notch behind it seems to line up ok, but the belt won't go any further, and if it did the white line wouldn't line up with marks then:

https://photos.app.goo.gl/5EDjCTqB5oBuuhY69

But the line on the belt won't stretch over to the notch on the cam 3.

Any ideas?

Thanks

G



 

83

Omega General Help / Re: water ingress

« on: 04 April 2023, 22:27:57 »

The drain at the bottom of the cabin filter was blocked in mine, it caused water to back up in that box section and flood into the passenger floor.

84

Omega General Help / Re: Prefacelift handbrake back plate removal

« on: 24 March 2023, 06:53:33 »

New ones here if these help:

https://www.ankerblech.de/c/ankerbleche/omega-b

85

General Car Chat / Re: End of life no parts anymore

« on: 15 March 2023, 12:46:40 »

theres always a few breakers about. either on here on on ebay the engines were well used in various cars including saabs
.a second hand  cooler should be fine if the cost of new is putting you off..after all every omega is fitted with one !   in fact every used car  out there is a collection of used parts bolted together !
or as mentioned a replacement could be fabricated (or bypassed)
nothing to make me think the car should be scrapped especially if its a good example otherwise.

Weren't post facelifts stainless steel anyway, and I guess anything in any other vx/saab of that era the same?

86

General Car Chat / Re: End of life no parts anymore

« on: 15 March 2023, 10:13:52 »

This no use?

https://www.proparts.se/en/artiklar/oil-cooler-assembly-2.html

I don't see the dreaded "out of stock" tag so might be worth a shout, although it might be contact for enquiry only as I don't see a buy button.

87

Omega General Help / Re: Matrix pipes little green clip pipe end

« on: 15 March 2023, 10:01:20 »

Every day is a school day

Definitely - after me spending 1/2 an hour trying to put them back on the pipe lol find out theyre not even needed!

88

Omega General Help / Re: Matrix pipes little green clip pipe end

« on: 13 March 2023, 10:44:53 »

Essentially they're lock clips to prevent the actual fixings from coming adrift. Think the sliding tab on an electrical connector.

Refit them as intended, but don't lose too much sleep over them

No there not

The lock is the sliding portion of the main black coolant connector, the green tabs are a transit part from component manufacture, they serve no purpose once fitted

I'd just read on the global TIS the same that they were for manufaturing purposes only and don't need to be reused.

89

Omega General Help / Re: Matrix pipes little green clip pipe end

« on: 06 March 2023, 12:22:28 »

One of the clips on the end of the pipe that goes from aux pump to top matrix pipe is brken off, my fault testing it for strength but it didn't take much tbh.

https://photos.app.goo.gl/jMETGyVQeT63eNkUA

The other ones seem pretty firm. Wondering if it will be ok with 5 out of 6 clips or a no no?

Thanks

G

90

Omega General Help / Re: Matrix pipes little green clip pipe end

« on: 06 March 2023, 09:52:01 »

Just a heads up on those hoses, not available anymore, so if there's any problems with the ones that you have, then you will have to get inventive. I had one that was leaking, so I cut the ends of, and with my bad eyesight I screwed it up and had to have the car low loaded to a garage, and they took two goes at fixing them with spring clips/ jubilee clips.

I was suspecting they'd probably be like hens teeth to find, although I did have a dig about just for spares. Ends look ok but I'm thinking they must get brittle with heat/cool cycles and then you apply force to them to remove them after 20 years, doesn;t inspire confidence, but the clips do still feel springy (not pushing my luck though).