Hi all,
I have a 62 F350 with a 292 which jumped time and bent most of the intake push rods. I couldn't find any contact marks on the pistons so I don't think valve/piston contact was an issue. What's strange is that it ran beautifully right to shut down on one day and wouldn't start the next. After troubleshooting the ignition system, I pulled a valve cover to find the intake rods where missing! I've removed the heads and timing cover but have discovered another problem. With the crank set at #1 TDC the cam gear key looks to be 180 out. When I spin the camshaft to aim the rotor at the #1 cylinder, I can't get the timing marks to line up with the indicator links at 3 o'clk. Has anyone dealt with something like this? I feel like there's something I'm missing but the ignition timing was never messed with. Could the dist timing jumped at the same time as the valve timing? I've heard that the y-blocks were known to throw their timing on shut down. Is that true? Any info would be appreciated. Thanks.

Scott

 

I wouln't try to over diagnose it
Install timing gear correctly then time distributer to it

 

When you said that you spun the cam, to aim the rotor at the #1 cyl, you did mean the #1 plug wire location on the dist. cap, right??? I knew a guy one time that kept telling me that it would line up right. He was actually pointing the rotor towards the cylinder itself. Just making sure.

 

Timing marks do not line up on a Y block

timing marks for the crank is installed paralell to the ground and facing the steering box . Then place the cam timing mark exactly 12 pins from the crank mark.

They do not face each other like any other small block/big block ford or chevrolet.

Garbz

 

Yes, the #1 wire position on the dist. As it is now, if both timing marks are placed at 3 o'clk with #1 @ TDC, the dist rotor appears to be pointing 180 degrees from the #1 marked position on the cap. To make it more confusing, if you go to crank it through one cycle, as soon as you start rotating the crank CW (viewed from front), the intake starts to open. It's almost like the Y-blocks have their timing set on the end of the exhaust stroke versus the firing stroke. I'm a little reluctant to just slap everything together knowing that if I set the dist to #1 with the timing marks and #1 piston at TDC, it'll be firing around the time the intake is opening for the intake stroke.???

 

Garbz,
I put both timing marks on the indicator links in the timing chain and both marks are at the 3 o'clk position on the drivers side. There's 12 pins between the timing marks. At that point, if you look at the dist, it's pointing at the opposite side of the cap away from the #1 position. Now if you start to crank the engine forward, the intake valve starts to open immediately. So that's telling me #1 cylinder has just started the intake stroke versus just firing after the compression stroke. That's where it gets confusing. Unless the cam gear was marked incorrectly, I don't see how you can verify #1 will fire when it's suppose to. This is my first Y-block so if there is some wierd timing quirk, I'm just not familiar with it.

 

 

Ray,
Thanks for the page. I haven't picked up a manual yet but a picture tells a thousand words. I'll press on from here. Thanks again.

Scott