850 glt (non turbo)93 Timing Belt

javajay72 · Post by **javajay72** » 01 Mar 2009, 16:57

Hello everybody
First time post here.Long story of wasted time and money here.I have plenty of extra parts i will later post if anyone is interested.During my timing belt installation i moved both of the sprockets frontwards....backwards and i think i messed up my chances of having this engine run again.The timing marks on the sprocket don't mean a thing if i did what i did right?If i'm lucky enough and didn't bend a valve what should i do at this point?Do i have to open up the valve covers line everything back up and put new seals in?If i did damage i would love to drop another engine in because this one has over 240,000 miles on it.Maybe a turbo?Any ideas?I'm not bad with my mechanical skills although getting in this situation i have learned i have much more to learn.It seemed easy enough to tackle.Yeah not so much!!!!!

Post by **MadeInJapan** » 02 Mar 2009, 16:41

Your car does not have variable timing- as long as you didn't go 360degrees on your sprockets I'm thinking you're good...just line up the marks, put a belt on and SLOWLY turn it by and in the clockwise direction. If you hit something then you'll know that you're in for taking stuff apart (or maybe not- hopefully Lee will chime in if this happens). You certainly don't want to put a belt on and then crank the engine.

javajay72 · Post by **javajay72** » 02 Mar 2009, 17:14

Thanks for replying.I'm going to take another swing right now.This will be the third attempt.I got the belt on fast the first time.Beginners luck.The second time i wanted to pull out the sledge hammer and end my Volvo's chances of ever running again.For SnG's i would then put a claim in on my car and plead my insanity.Okay i'm off.....Cross my fingers and be back in an hour or two.

Thanks again!!!!
Jay

Post by **Ozark Lee** » 02 Mar 2009, 17:21

I'm having a hard time figuring out what you did. Did you remove the camshaft sprockets or did the sprockets move while you were replacing the belt?

The sprockets have slotted holes which means that you can adjust the cam timing a few degrees either way on each cam. If so just set them back to the middle of the arc and it will be very close to stock - certainly close enough.

If you moved the cams themselves just move them back to the timing marks and put the belt on.

If you turned the motor over with the new belt on and didn't hit anything, you can always crank it back around to #1 TDC (2 revolutions from where you started) with the crankshaft mark, reset you cams to their respective marks, and put the belt back on.

I don't hear anything here yet that sounds fatal.

...Lee

javajay72 · Post by **javajay72** » 02 Mar 2009, 20:32

Being a greenhorn at this and having OCD i thought it would be smart to remove the back cover of the timing belt.So i removed the sprockets and an hour into trying to get that cover off realized it was a bad idea to attack.Of course i was stubborn and went through with it.....real stupid.....I made marks on the sprocket to id them but somehow mixed them up.I'm about to try it now.I got caught up on the phone so i'm not done yet.I wasted a bunch of time trying to jack up the engine.There doesn't seem to be a lot of good places to place the jack and it doesn't seem to give you to much more room to play with.When my neighbor figured out it was the timing belt(starter was out and he was spinning the crankshaft with a screwdriver)the timing marks were off and that's when i turned them manually and thought maybe i did some damage

javajay72 · Post by **javajay72** » 07 Mar 2009, 13:46

Thanks guys!!!I'll look for it but i don't remember seeing it.....the procedure for adjusting the timing via the sprockets.

james78 · Post by **james78** » 08 Mar 2009, 15:09

i have lots of experience with this. if you can't seem to get the car to start yo will need to get the engine back to top dead center on the number one cylinder. the timing mark on the crank is very difficult to see, some have a cast mark right behind the crank pulley, my 93 850 has only the machine slot on the inner side of the crank pulley. it is only about an eighth inch deep and just wide enough to catch a finger nail. it needs to be clocked at 12 on the crank. there is a cast mark behind the pulley on the engine block. it should line up. the easiest way to check if the cams are lined up is to pull off the distributor and camshaft position sensor. the slots should line up horizontally with line where the camshaft cover meets the head. the slots are offset slightly off center. the intake cam should be above the center line and the exhaust below center line. if your timing is off at all with the crank or cams it will be difficult if not impossible to correct the timing without removing the camshaft cover. installation requires two tools you can make. get a haynes manual and it will cover this for you in more detail. a quick tip when reinstalling the timing belt once you have the timing marks lined up properly, take your tensioner completely off, do the compression step for the tensioner in a bench vise, rotate the crankshaft counter clockwise about two teeth, install the timing belt, to get the belt tight on the forward side of the engine, hold the belt against the crank pulley and rotate the crank clockwise until the belt is tight, you timing marks should be aligned as perfect as you will ever get them, install the tensioner and pull the pin to release the pressure on the tensioner. it may take a couple of times to rotate the crank the two teeth to put tension on the belt, but this is the best way.

javajay72 · Post by **javajay72** » 08 Mar 2009, 18:55

James thanks a bunch!!!!They need to permanently paste this to the Timining Belt section.I want to sell this thing and start my hunt for more power.......How much do shops charge for a timining belt change anyways?I would say they probably get $1200.00 all day long.So what's the most desired turbo wagon out there?Engine?

Thanks Again!!!!
Jay

james78 · Post by **james78** » 08 Mar 2009, 19:12

i think the dealership gets between 600 and 800 but that is because they are trying to change everything at the same time, the water pump, tensioner, idler pulley, etc. i have a 93 850 NT and a 94 850 T, i have done head gaskets on both. i had to use a Q-tip to clean off the crank pulley just to see the little machined slot that is the timing mark. it is that small. once you do the timing belt it just becomes easy. it literally takes me about 30 minutes now.