So last fall my timing jumped on my car "not mopar" but you guys are probably the smartest car guys I talk with! lol

If you have any input please do so.

Its a 287 v8 AMC engine, and it jumped time and quit running while driving down the road. Ended up putting a timing chain and gears on it.

I moved the distributor to get it running again, and it jumped time within a minute or so of running.

It did not have this loud tick until after I did the timing chain. I can say it is in time as I checked it again. Dwell is good at distributor also.

*Do you guys think I bent the push rods or do I now have a bad lifter?? Think I wiped a lobe on the cam...

Its hopefully coming out of storage next weekend and I want to get parts to work on it. I know its hard to diagnosis over the internet but what would be the first step.

I took it up to a shop and the owner listen to the ticking but only told me to put in this oil additive. It was only a couple buck at autozone. Long shot but I tried it, didnt end up changing a thing at all. lol

What to do now? Can I run the engine with the valve covers off?

Thanks!~Sean

 

You could have a bent valve, bent push rod. Do a compression test. Check the valve clearances.. DO NOT run the motor until you fix the problem

 

Okay begs the question of where the tick is coming from. I would suspect that something was not put in the correct way first.

What exactly do you mean by jump timing? To me it means that the timing chain was so far worn that the chain jumped a tooth.

 

X2. ALL conventional V8 engines that I'm familiar with "back in the day" are what have become known as "interference" engines.

Time to do a leakdown/ compression test and seriously consider pulling the heads, unless you can beg/ rent/ steal a fiber camera

Not trinna 'be down on ya, but they are not gears. A chain cam drive uses "sprockets." Some engines ARE gear driven, but this one is not. I dearly hope, however, that you bought an all iron top sprocket instead of the plastic one.

 

We you assumed "jumped time" did you retard the distributer and she limped home running like crap? Did you actually line up the sprockets with 1 at TDC and find she was off before you did the new chain?

Had you just "revved" this to the moon and then she started acting up?

Yes you can run it with valve covers off.
Yes you can bend a push rod ( I wish they were bend proof ) . Yes it will tick since may have lost lash / pre load.

 

Yes I lined up the sprockets with 1 at tdc.
Yes the timing chain was so worn that it jumped a tooth and I tried to retard the distributor and it jump again after it was running. I was only about 5 minutes from home.

I was suprised to find that it had a plastic sprocket in it, I did replace with an all metal sprocket in place of the old one.
Actually I ended up ordering 3 different kits because the first two were the wrong ones

I didnt rev it up for the first start. As soon as I started it, the ticking was instant. I figured it would get better after I drove it around the block but nothing changed.

The car sat for about 3 months after it jumped time, then I did the timing chain.

@440roadrunner, Your not a downer man!! I used the wrong terminology and you just set the record straight lol

Thanks for the insight guys!! Have a great weekend

~Sean

 

DEFINATELY SMAshed valves

 

To add to my pre post.. I lost a timing chain on a 318 van. Ended up with 7 bent ex valves and one broken ex valve. I still have the scar on my hand from the breaker bar slipping off when trying to turn the motor by hand, sheet metal is sharp..

 

TVLynn,
Ouch man that sucks. Well it sounds like my next step is doing the compression test and seeing the results.

I will post the results prolly on monday or so.

Thanks

 

I'm curious as to what the engine is in. Jeep? Car?

 

Dont laugh!! But its a 1964 AMC Classic 4 door"Rambler"

I bought it from the girlfriends grandfather as it was just sitting collecting dust in the garage. So I decided I would daily drive it on the week days instead of my Tahoe.

 

If it works and is not rusted out why would I laugh?