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By jamison29 - 5 Years Ago
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I recently had my 292 Y Block rebuilt at a reputable machine shop here in town. I am trying to learn as a go to get my 54 F100 up and running and don't know much mechanically. I manually turned the engine to find TDC on the #1 piston and compression stroke. The TDC mark on the dampner is not even close to the pointer. Was this put together incorrectly or am I missing something? I'm estimating that it is maybe 60° off.
Thanks for the help!
JT
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By Florida_Phil - 5 Years Ago
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Does the engine run? If so, you may be looking at the wrong mark or perhaps your pointer is incorrectly installed.
You need to find true TDC of piston number one. When your engine is at TDC of the compression stroke, piston number one should be at the top of it's travel and both valves should be closed. Both the intake and exhaust rockers should have play. The distributor rotor should be pointing to the "1" on your distributor cap.
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By oldcarmark - 5 Years Ago
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 I would ask the Machine Shop how they installed the Timing Set. A common Mistake is to set them like the majority of Fords aligning the timing Marks with Camshaft Gear mark down and Crankshaft Gear Mark up aligned with each other. Y Block marks are set with both Marks facing right when viewed from the front and 12 PINS between timing Marks.Its a common mistake made .by Anyone not familiar with the Y block Timing Procedure. Shop Manual shows it very clearly.
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By jamison29 - 5 Years Ago
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Thanks for the response. I'm not sure if the engine runs yet. I'm trying to get all my ducks in a row prior to trying to start and break in the engine. The engine was not the original engine that was with the truck when I found it. I was able to find a y block and took it straight to the shop to get it rebuilt.
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By oldcarmark - 5 Years Ago
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Are You using the Damper off the Truck Motor or the One that came with the Engine because that may be a reason why its not lining up properly. I would not try and start a new Motor until You have the Timing Mark problem resolved.
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By 57RancheroJim - 5 Years Ago
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Are sure you are checking #1 cylinder, it's passenger side front unlike a scruby.
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By oldcarmark - 5 Years Ago
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57RancheroJim (9/8/2019)
Are sure you are checking #1 cylinder, it's passenger side front unlike a scruby.
That's another Common Error. #1 Cylinder and Timing Gear Setup.
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By jamison29 - 5 Years Ago
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The damper that originally was on the engine had spun so I replaced it from another Y block. Not sure what vehicle the Y block was from...
Right front is the cylinder speaking of.
Thanks
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By charliemccraney - 5 Years Ago
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If the history of the damper is unknown, then it need to be replaced or rebuilt. It doesn't matter how good it may look.
How are you determining that the piston is at tdc?
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By Tedster - 5 Years Ago
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Passenger side forwardmost cylinder. Unless 'Strya.
It's worth checking true TDC with a piston stop tool, to verify TDC on the balancer. Pull the valve covers. When #1 cylinder is at TDC compression, TDC on the balancer, the #6 valves should be at overlap. When #6 cylinder is at TDC compression, TDC on the balancer, #1 valves should be at overlap. 12 pins between links on the timing chain is something even experienced shops sometimes overlook. Let us know what you find. Good that you're checking this stuff before trying to fire in any case.
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By KULTULZ - 5 Years Ago
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- SPEEDWAY MOTORS
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By KULTULZ - 5 Years Ago
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The damper that originally was on the engine had spun so I replaced it from another Y block. Not sure what vehicle the Y block was from...
... mmph ...
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By Joe-JDC - 5 Years Ago
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Make sure when you say "right front" you understand that left and right are always designated as if you are sitting in the driver's seat of a car, and when dealing with aircraft, the pilot's seat. Otherwise you will get really confused. Passenger side front cylinder with Ford American cars for #1 cylinder pre front wheel drive. Joe-JDC
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By jamison29 - 5 Years Ago
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I guessed TDC with a screwdriver. I will defenatly buy a piston stop tool and reassess.
Yes, I'm saying Right as if I were driving the truck or flying a plane.
Thank you guys! I will reassess TDC once I get the appropriate tool and post my findings!
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By jamison29 - 5 Years Ago
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Update...
I hate to admit it but I'm a mechanical idiot. I was able to achieve TDC and everything lines up correctly. It seems that when I attempted to find TDC in cylinder #1 using a screwdriver, I may have gotten confused or continued to turn the engine past TDC. (a few Miller Lites could have contributed to this as well).
Anyway,
Today I used a Piston stop tool in cylinder #1 to find when the piston was at the top of the cylinder.
I pulled the valve covers to make sure the valves were overlapping and that I was on the compression stroke.
Looked down at the balancer and the low and behold the pointer was pretty darn close to pointing to TDC.
I then followed the instructions that KULTULZ posted and made my marks that coincided with the marks on the balancer.
Thank you everyone for your input and time. It is much appreciated.
I may attempt to start the engine for the first time and break it in over the weekend.
Thank You!!!!!!
JT
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By oldcarmark - 5 Years Ago
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jamison29 (9/12/2019)
Update... I hate to admit it but I'm a mechanical idiot. I was able to achieve TDC and everything lines up correctly. It seems that when I attempted to find TDC in cylinder #1 using a screwdriver, I may have gotten confused or continued to turn the engine past TDC. (a few Miller Lites could have contributed to this as well). Anyway, Today I used a Piston stop tool in cylinder #1 to find when the piston was at the top of the cylinder. I pulled the valve covers to make sure the valves were overlapping and that I was on the compression stroke. Looked down at the balancer and the low and behold the pointer was pretty darn close to pointing to TDC. I then followed the instructions that KULTULZ posted and made my marks that coincided with the marks on the balancer. Thank you everyone for your input and time. It is much appreciated. I may attempt to start the engine for the first time and break it in over the weekend. Thank You!!!!!! JT
U are not an Idiot. If U are unsure of Something better to ask Questions than make a major Mistake like a new Engine.
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By jamison29 - 5 Years Ago
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Update...
Triple double checked TDC, plug wires, firing order, valves closed at TDC etc. Primed the carb... Asked the wife to turn the key and IT FIRED UP WITH NO PROBLEM! I was so stoked that it fired up without a hitch and thought that I would let everyone know on this forum who helped me. A great BIG THANK YOU to you guys!
Ran it at high RPMs for about 20 min to break everything in. Minor Fuel leak at the fuel pump, but I can take care of that. Put the timing light on it after 20 min and it seems to be all good after a minor distributor adjustment.
THANK YOU!
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By oldcarmark - 5 Years Ago
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Congrats! Its a great feeling when it Fires right up. Great relief too. Been there. Done that.
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