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302 vibration issues

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Old Jan 13, 2018 | 11:48 AM
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302 vibration issues

i am having issues with vibration on my 302. It is an 87 block in a 77 truck with a T18 trans. I think I found the issues. The damper is E4TE-A3A (50oz?). The flywheel is stamped with C5AE-E(28oz?). Do I have to drop the oil pan to see what the crank is? Am I correct on the balance weights for the flywheel and damper?
 
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Old Jan 13, 2018 | 12:09 PM
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Did you just put the engine in?
 
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Old Jan 13, 2018 | 12:30 PM
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Originally Posted by JessyJ
Did you just put the engine in?
No. Previous owner. I’m hoping it didn’t tear other things apart.
 
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Old Jan 13, 2018 | 12:34 PM
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Originally Posted by Jarbl
i am having issues with vibration on my 302. It is an 87 block in a 77 truck with a T18 trans. I think I found the issues.

The damper is marked: E4TE-A3A // The flywheel is stamped: C5AE-E
The harmonic balancer and the flywheel must match. Otherwise, you'll have a vibration that will eventually tear the center from the flywheel.

The harmonic balancer is correct, the flywheel isn't for this application.

E4TZ-6316-A
.. Harmonic Balancer / Marked: E4TE-A3A or AA: 1984/89 F150/250 & Bronco 302

C5AZ-6375-L
(replaced C5AZ-6375-E [marked C5AE-E]) .. 1965/76 390 Flywheel-Use with 11 1/2" clutch. (6) 5/16" -18 pressure plate attaching holes on a 12 7/8" bolt circle.

btw: Are you sure this is an engine vibration?
 
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Old Jan 13, 2018 | 12:41 PM
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Thanks ND. I’m wondering if I should assume the crank matches the block and balanced. The PO did some dumb stuff on this truck.
The oild pan gasket is dripping anyway so I might as well pull it. Question is, how do I get the pan out. Do I have to jack up the engine or should it come out? Jacking it up may be an issue since I don’t have a hoist.
 
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Old Feb 19, 2020 | 10:56 PM
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302 vibration issues

Hello, I have a 302 engine taged with this part number 89TY-8015-AB and I would like to know more info about this motor.
Right now I believe that I have a 28 ounce flywheel on it and I do think that that motor needs a 50 ounce flywheel can some body help me with this topic?

Currently motor have a lot of vibration when it is around 2000 RPS

Thanks





 
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Old Feb 19, 2020 | 11:58 PM
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That is an engine made in Mexico. I can't find any reliable info regarding the casting number. The production was supposedly 1968 to the mid '70s, which would 28 oz imbalance. (50 oz started 1981)

Is it in otherwise good condition? Good compression on all cylinders, not missing or running poorly?

Are there any numbers on the crankshaft? Have the internals been replaced? Do they all match?



 
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Old Feb 20, 2020 | 10:55 PM
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Originally Posted by 85e150
That is an engine made in Mexico. I can't find any reliable info regarding the casting number. The production was supposedly 1968 to the mid '70s, which would 28 oz imbalance. (50 oz started 1981)

Is it in otherwise good condition? Good compression on all cylinders, not missing or running poorly?

Are there any numbers on the crankshaft? Have the internals been replaced? Do they all match?

Thanks 85e. 150

Engine is in good conditions in general, actually the person who open it was surprise because it is still standard, just one valve wasn’t sealing properly and now is ok, I bought this 1979 F100 truck around 4 years and I believe that the previous owners changed half engine for this one but they keep the 28 components.
Is it posible that this engine is an 89 engine ( first two digits numbers on the casting block and then T= truck and Y= year ?)
Right now I can’t see the crankshaft number because the motors is already close but I will try to get it

Thanks
 
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Old Feb 20, 2020 | 11:45 PM
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Unsure. The date code would only give us a "9", which could be '79 or '89 I suppose. See if you can find it anyway.

The "30H9" on the flywheel doesn't match the usual (US) date code format:

https://classicmustang.com/decoding-part-numbers/
 
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Old Feb 24, 2020 | 10:56 PM
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Finally I got the crankshaft number, it is 2MAE / E7AE-AA which I believe then that I will need a 50oz set right ?
 
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Old Feb 25, 2020 | 06:08 PM
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E7AE would be a 1997 revision item. 50oz. This must be a real mix and match engine. Not the strongest stock crankshaft but should be ok for standard running. You have to wade through this a bit:

https://www.corral.net/threads/is-th...ything.859046/

Watch out for what kind of rear seal you have as well, and pay attention to installation if you are going to replace it.
 
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