Knock in motor -FYI

Charner (MS) · Jun 19, 2017

Bought an 8N side mount at a gooood price. Got it in the shop got it cranked. Found out why I got such a good deal. It was knocking. Compression and oil pressure was very good. Broke the engine down and rods, valves were ok. Knocking sound was coming from the front. Removed the front cover and after some searching found the cam gear bakelite was loose where it pressed together. Pressed it back tight. Turned the engine over a few time and wa la. She is going back together tomorrow and I believe I got a good deal. Knocking engines can fool you. Had one once that was knocking and found a loose sleeve. A little sleeve retainer and good as new. These old girls are tough.

HFJ · Jun 19, 2017

i once got a great deal on a 66 mustang because of this issue. it was owned by a friend's brother, and he told me he didn't want to sell it to someone he knew because of the knock. i talked him into it finally.

i figured the car itself was worth it regardless, even if i had to drop another engine into it. but, it turned out, the engine was fine. the car had mirror image dual exhaust pipes, with some moderate bends in them. they had been installed with the part of the pipes that should have been to the outside facing the inside instead. as a result, the drive shaft was hitting them

Ken(Ark) · Jun 19, 2017

(quoted from post at 17:50:08 06/19/17) i once got a great deal on a 66 mustang because of this issue. it was owned by a friend's brother, and he told me he didn't want to sell it to someone he knew because of the knock. i talked him into it finally.

i figured the car itself was worth it regardless, even if i had to drop another engine into it. but, it turned out, the engine was fine. the car had mirror image dual exhaust pipes, with some moderate bends in them. they had been installed with the part of the pipes that should have been to the outside facing the inside instead. as a result, the drive shaft was hitting them

The latest prank I have heard of is to take a large zip tie and sneak under your coworkers truck and zip it to his driveshaft . :lol:

Hobo,NC · Jun 19, 2017

Did I read you are gunna reuse the P.O.S. original cam gear.. :shock:

tractorguy2 · Jun 19, 2017

No more than a cam gear costs. I would put in a new one.

Tall T · Jun 19, 2017

(quoted from post at 15:50:08 06/19/17) i once got a great deal on a 66 mustang because of this issue. it was owned by a friend's brother, and he told me he didn't want to sell it to someone he knew because of the knock. i talked him into it finally.

i figured the car itself was worth it regardless, even if i had to drop another engine into it. but, it turned out, the engine was fine. the car had mirror image dual exhaust pipes, with some moderate bends in them. they had been installed with the part of the pipes that should have been to the outside facing the inside instead. as a result, the drive shaft was hitting them

Bought a luxury, very low mileage 6 cylinder Toyota because the owners couldn't figure out why it had lost all its power. Got it home and found that someone had backed into something and folded the tail pipe closed!

psimmer · Jun 19, 2017

I have done the zip tie on the driveshaft trick. It works great! Driver and passenger moving truck back and forth in parking lot listening to sound trying to figure out what it is.

ASEguy · Jun 20, 2017

I would be concerned about the press fit as well. Glad you figured it out and I hope it stays that way.

Dune Country · Jun 20, 2017

I have a friend that had a '76 F100SB 4X4 w/a 351 clevland in it sitting in his yard for 5 years, it had no power, start but not go.
He owned a tool store and was trading tools to the local high school shop to work on it.
It had new carb. dist. alum. intake fuel pump etc.
He called me one day and asked if I wanted it for $500, you bet.
Got it home checked things out and pulled the air cleaner... went like a raped ape.
The clevelands were notorious for breaking valve seats and this one had a broken intake seat, every time that cyl fired it would spit a little, did have a miss, the air cleaner looked new on the outside but was plugged up from the inside.

Tom N MS · Jun 21, 2017

Makes no sense to me..I'd never do that..

Tall T · Jun 21, 2017

(quoted from post at 20:13:42 06/21/17) Makes no sense to me..I'd never do that..

I haven't read much of this thread
but I got the idea Charner was talking about the fiber ring gear on his timing gear being a press fit.

If I had one that came loose, I'd sure never use it again.
Too much time and effort getting the job done right.

My 235 Chev has a fiber timing gear.
I liked it for a rebuilt cause I figure the new fiber teeth mate so nicely with a reused crank gear.

Knock in motor -FYI

Charner (MS)

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HFJ

Well-known Member

Ken(Ark)

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Hobo,NC

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tractorguy2

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Tall T

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psimmer

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ASEguy

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Dune Country

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Tom N MS

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Tall T

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