Figure this.. new timing belt jump..alot!

[gearhead07]

Long story short I got a heck of a deal on a friends car (headache ). 91 talon freshly built by Jackson. Just a bit over 1k on it.
1. He put the fresh motor in it with junkyard head.
2. A couple moths it shut off while idling, after lots of searching found compression low in #2 and #3
3. He put a fresh rebuilt head on, with new timing components. Runs great!
4. Car shut off when cruising through town.
5. Due to his busy life and lack of time he sells it to me.
6. I do a compression check I have 0 compression on all 4 cylinders.
7. Today I checked timing/pulled head and this is what I found.

Check out my timing marks!?!

Seems to be completely off?

valves visibly don't look bent or kissing the pistons. I'm kinda lost.

What do you think?


First three pics are with it at tdc, crank mark lined up. ( notice I have an extention in cinder 1 to show).

The last 3 has cam gears lined up and you can see it it at bdc when #1 valves are closed.

 

[synthetek]

How many times did you spin the crank? you have to turn it 6 times for it to line up. You also have a BSE so you don't have to line up the oil pump gear, just the cams & crank.

 

[gearhead07]

Ok thanks I didn't know that about the oil pump. No I'm not 100% sure how many times I turned it but I know it was several. And also like I said no compression in any cylinder, something is way out

 

[SrKegler]

Find out where your oil leak is. Hard to tell from the pictures but it looks like it may be the oil pump sprocket seal. Check the hyd tensioner. If the belt is installed too tight or too loose, the belt can slip on the crank sprocket if you park on an incline without using the e-brake.

Also it takes 6 revs on the crank to line up all the marks if you have balance shafts.

 

[gearhead07]

Oh ok yes I will have to look into that leak. It is kinda fishy.

 

[Dsmkauai]

I don't think you have the crank in the right spot to check timing bro! And your cams should have the dowel at 12o'clock when in the correct spot in your first pic the are at like 9o'clock. You need to find the real arrow to line your crank up to, because I know it doesn't use a Bolt head for the reference mark. Try again and post pics, seems maybe your belt jumped but hard to say without accurate readings! The arrow should be just to the right of that bolt head!

 

[92AWDHX40]

No compression looks like its time to pull the head replace the valves and basically a head gasket job, replace everything in question while your the water pump, gaskets pulleys and tensioner do it right the first time with everything fresh, grab a oem gasket, or felpro from the local autostore, and some arps and your good.

 

[gearhead07]

@dsmkai I don't see any arrows for my crank timing mark. On Mitchell it shows no distinctive arrows either. But regardless it is at tdc, see the extension in spark plug hole #1? And at that point the cams are at 9 o'clock like you stated. That is my whole problem I believe.


But I did get the head off to check it out. They don't visibly look bent or mangled in the head. I didn't get a good inspection yet because I was running out of time.

So maybe this weekend I will take the cam and valves out and trying to peice together what happened. But I have new valves, springs and cams on the way.

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O I just found this for the 6 bolt motors. I will go home and see if I can see it.

 

[bryanwheat]

The timing mark is right next to the bolt, about half an inch to the right. If the crank is lined there and the cams are that far off than it jumped time. I would like to see a pic or the tensioner to see how it is set.

 

[miguelmcv]

Here are some good pics of how the marks needs to be line up.
It"s a 6 bolt in a 2g, But it's the same motor (6 bolt) you have, so the marks needs to be as they are.

http://www.dsmtuners.com/forums/art...l-installing-timing-timing-belt-6bolt-2g.html

Hope it helps.

 

[gearhead07]

Ok that should help a lot also, thanks! And yes I will have to remember to get some pics of the tensioner.

But as of tonight I have the head on the bench. Removed cams, no visible damage to cams?!? No I would have imagined to see them all mangled,... no?
So right now I'm water testing the intake side

*update*

30mins later, water testing intake valves. Steady drips from 2 valves but I don't think near enough to cause no compretion

 

[vingasoline]

I don't think you turned the crank enough to properly line up the marks. Does your compression gauge work? 0 compression on all 4 is very odd.

In the last pic it looks like you are 180 crank degrees out. For it to slip that much, valves will be noticeably bent

 

[gearhead07]

Yhea that is a good point I'll have to verify the gauge is right. Because I think it is weird too.

 

[bryanwheat]

I don't think you turned the crank enough to properly line up the marks. Does your compression gauge work? 0 compression on all 4 is very odd.

In the last pic it looks like you are 180 crank degrees out. For it to slip that much, valves will be noticeably bent

It is obvious from the pic that the timing is off. With the crank pulley lined up the dowels will either be up or down. The crank turns twice as fast as the cams, so every one turn of the cams is two turns of the crank.