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My morning disaster - how done am I?

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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LamboSE5
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Re: My morning disaster - how done am I?

Post by LamboSE5 »

erikv11 wrote:LamboSE:
You want to do the #2 and #3 *without* the timing belt on. That is why you have to watch out for piston-valve contact: the engine is out of time due to that jumped timing belt, so with the timing belt off you are going to put things back to where they should be. Only then do you reinstall the belt.

The pulley is indeed ruined but ignore the pulleys for now, you are dealing with three things: left (exhaust) cam and its sprocket, right (intake) cam and its sprocket, and the main crank pulley at the bottom of the engine. Read some instructions for changing the timing belt to familiarize yourself with these parts. ...
Yes, watching a few videos, looking for a diagram of the timing assembly for my car. Though I messed up the nomenclature of a few times, it's an understanding of how they work together, and what not to do I really need. So I'm looking for that. Didn't want to turn the crank while cams were out like that, and don't know if I just literally turn the cams by hand afterwards too.
I guess either way - I'll need to buy a timing belt kit (pulleys etc) if I even want to test this afterwards, cause without belt tension crank won't turn other components...
Not many turbo 850's s70's on kijiji in my area either, to swap. But I'm looking :)

Thanks

boosted5cyl
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Post by boosted5cyl »

Its up to you, but personally I wouldn't waste my time putting a belt on that. You can be almost certain you have bent valves, especially when you look at the resting position of the exhaust cam.
I hate to be the bearer of bad news, but if that was my motor, I would just start pulling the head off, or look for a replacement engine depending on what you think you would like to do.
'04 XC90 2.5T AWD (Angus) 134K.
'99 S80 T6 (Medusa) 214k. On borrowed time LOL
'98 V70 T5 (Vivienne). RIP @ 228K. Spun rod bearings.

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LamboSE5
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Post by LamboSE5 »

boosted5cyl wrote:Its up to you, but personally I wouldn't waste my time putting a belt on that. You can be almost certain you have bent valves, especially when you look at the resting position of the exhaust cam.
I hate to be the bearer of bad news, but if that was my motor, I would just start pulling the head off, or look for a replacement engine depending on what you think you would like to do.
Yea - this is what I'm not sure of, if people are advising me on how to change a timing belt or on how to check the extent of damage. I'm not trying to just change a timing belt. Speaking of which, I'm following another thread with step by step instructions on how to change a TB and I cant get mine off over the crank pulley. The crank pulley cover is off (the one with 2 10mm bolts). And the serp belt, tensioner, and tb tensioner pulley. it just won't come off over the the crank pulley sprocket. I may try n jack the engine up a lil as the poster said.
How do I turn the intake/exhaust cam sprockets? They're not connected to anything cause the belt is off.

boosted5cyl
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Post by boosted5cyl »

I can guarantee that at least one valve is bent. That means the head has to come off no matter what. If the motor was idling when this happened I would be more likely to say put a belt back on it and do a compression test but thats not what happened. Theres also a possibility that you can make the damage worse by trying to crank it over again.

Now to answer your questions.....You could use the old timing belt and some brawn to manipulate the camshaft back to its correct position. Or you can try and put a piece of metal in between two of the three bolts to rotate it. Lastly, you could pull the cam position sensor off and try and turn the cam using the slot on that end.
To get the old belt off the crank sprocket I always ended up taking the harmonic damper pulley off to get the belt out. I know other have had success with the pulley still on, but I figure its good to at least take a peek in behind there considering thats where the oil pump lives and taking the damper off is handy enough.
'04 XC90 2.5T AWD (Angus) 134K.
'99 S80 T6 (Medusa) 214k. On borrowed time LOL
'98 V70 T5 (Vivienne). RIP @ 228K. Spun rod bearings.

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erikv11
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Post by erikv11 »

(1) to turn the cam sprockets, just stick a screwdriver or a socket extension in one of the holes.
As long as you are careful, this will not damage the sprockets.

(2) to remove the ruined timing belt, just cut it.
I have never taken off the crank pulley, maybe it is easy but always seemed like more trouble than it is worth.
Last edited by erikv11 on 10 Oct 2011, 08:18, edited 1 time in total.
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
'99 Camry V6 :shock: 153k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k

VolvoTurbo850
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Post by VolvoTurbo850 »

There is a shield under the crank pulley you need to remove if you are trying to remove the old timing belt. You should take this off anyway if your NOT going to removed the pulley itself. I have pulled manipulated the timing belt under the crank pulley but really the best way is to remove the pulley off. Much easier installation.

The Fleet

2001 V70 (NA) 2.5
1999 C70 Conv. Turbo 2.3 HPT
1998 S70 Turbo (T5) SE
1994 850 Turbo (T5)
1980 Corvette (Corvolvo)

Previous Possessions: (4) 240's, (1) 740, (9) 850's, (5) 70 Series
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LamboSE5
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Post by LamboSE5 »

Yes, i got that shield off (i might have called it a cover), thanks.

here's my crank marks - I have NOT touched/turned it. Looks to be perfectly in line to me, but correct me if I'm wrong.
IMG_0797.jpg
IMG_0798.jpg
Cam sprockets seem to have multiple 'white out' marks on them, just to make it more confusing. I think I can spot a 'dash/line' mark in the actual metal of the exhaust cam sprocket, under the whiteout. But the only line in the metal of the intake cam's sprocket seems almost curved - i.e.: not factory... the real one may be obscured by the (one of the) white out marks. I can't really tell..
exhaust
IMG_0802.JPG
intake
IMG_0805.JPG
IMG_0804.JPG
I don't appear to have those "v's" on the tb cover like some others to line stuff up with.

So, looking at my crank markings alignment, if that's "on", am I cool then to turn the cams by whatever method to try and line 'em up
I'm gone to check for my block's number by the exhaust mani. Clearwater said they need that. $450 for a head, plus shipping to canada...

Choguy03
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Post by Choguy03 »

It is not in time. If the crank is in time, both of your cams would be in time too. Since these are interference engines, I would recommend the clearwater route.

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erikv11
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Post by erikv11 »

Yes, the crank mark is where it needs to be, you can safely move the cams.

Yes, it looks like the "real" timing marks are under the whiteouts. Intake cam looks convincing (close to the stamped M), exhaust cam I couldn't see anything in your pics. I would definitely use the opposite triangles on the cam sprockets to guide you. If you are unsure, pull the CPS and the distributor to look at the slots on the back of the cams.

For the record I am not informed about the 2000 engine and where the cam marks are supposed to be, whether they are like the notches for an 850. I would look for some confirmation on that for sure, you need to know where you are supposed to put those cam marks once you find them.
'95 854 T-5R, Motronic 4.4, 185k
'98 V70, T5 tune-injectors-turbo, LPT engine, 304k, daily driver
'06 S60 R, 197k
'07 XC70, black, 205k
'07 XC70, willow green, 212k
'99 Camry V6 :shock: 153k
gone: '96 NA 850 210k, '98 NA V70 182k, '98 S70 NA 225k, '96 855 NA 169k

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LamboSE5
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Post by LamboSE5 »

Just to be clear, I have a '98 not a 2000. It has the b5234t3 same as the t5s have. How would the slots on the opposite side of cams help-just trying to make them parallel?
I called Clearwater to see if they could tell me where the number on the block is that they need and they said they don't know... On the block or something. So now I'm thinking I need to have my head off just to give them that number. In which case maybe I just need to start doing that. Arrgh.
I need a garage to be at this.

Thanks man

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