SPUN a Rod Bearing!! Now What ??? - Page 2 - S-10 Forum
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post #51 of 63 Old 01-16-2010, 02:12 PM
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Re: SPUN a Rod Bearing!! Now What ???

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Originally Posted by LabRat116 View Post
How many Cubic inches would that yield ?

How much more HP we talking ?
We never got actual HP numbers, but judged a lil over 300 hp.


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post #52 of 63 Old 01-16-2010, 02:20 PM
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Re: SPUN a Rod Bearing!! Now What ???

LMAO...this is what we used as a guidline.

http://www.hotrod.com/techarticles/e...ild/index.html
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post #53 of 63 Old 01-16-2010, 02:29 PM
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Re: SPUN a Rod Bearing!! Now What ???

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Oh god LOL.

So you used pistons from a 305 with 3.736" bores on a 262 4.3 with 4.0" bores?

BET IT RAN AWESOME BRAH.

And I'm sure that bore-job and stock length rod swap really woke it up.

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post #54 of 63 Old 01-17-2010, 12:16 AM
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Re: SPUN a Rod Bearing!! Now What ???

I got a truck with a slight tap/knock/miss, when I tore it down I found this....

Last edited by Bills Dad; 01-21-2010 at 10:42 PM.
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post #55 of 63 Old 01-17-2010, 10:50 AM
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Re: SPUN a Rod Bearing!! Now What ???

The OP hasn't even checked his oil for any signs yet. So the vertic isn't in yet....
That pic is a big reason why not to add seafoam into your oil. Something got in between the beering and the race.

Some people are like slinkies - not really good for much.
But they bring a smile to your face when pushed down the stairs.
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post #56 of 63 Old 01-17-2010, 06:17 PM
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Re: SPUN a Rod Bearing!! Now What ???

What pic are you looking at? I see a melted piston.

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post #57 of 63 Old 01-17-2010, 06:27 PM
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Re: SPUN a Rod Bearing!! Now What ???

a melted piston...or perhaps detonation?
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post #58 of 63 Old 01-17-2010, 09:11 PM Thread Starter
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Unhappy Re: SPUN a Rod Bearing!! Now What ???

Quote:
Originally Posted by Bill Wheats View Post
The OP hasn't even checked his oil for any signs yet. So the vertic isn't in yet....
It may be awhile too. Luckily for me the truck is a back-up vehicle.

I don't have the funds (yet) to do needed repairs either at this time. Sucks when you still owe $2700 on something you can't even drive.

Can't really work on it either.... Don't have a garage here.

Tentative plans are to probably buy a remanufactured engine and have a local garage do the install. Mechanic will only charge $550 Labor.

Trying to decided where to buy an engine from.

When I do get the job done, I will have an Autopsy performed on the old engine and report the results.
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post #59 of 63 Old 01-17-2010, 10:21 PM
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Re: SPUN a Rod Bearing!! Now What ???

Quote:
Originally Posted by Bill Wheats View Post
The OP hasn't even checked his oil for any signs yet. So the vertic isn't in yet....
That pic is a big reason why not to add seafoam into your oil. Something got in between the beering and the race.
Sorry, I was looking at the wrong pic Too much going on...

Some people are like slinkies - not really good for much.
But they bring a smile to your face when pushed down the stairs.
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post #60 of 63 Old 01-18-2010, 06:02 AM Thread Starter
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Question Re: SPUN a Rod Bearing!! Now What ???

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I got a truck with a slight tap/knock/miss, when I tore it down I found this....
What would cause the piston to desinigrate on the SIDE like that ?

Would detonition destroy a piston from the TOP ????
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post #61 of 63 Old 01-18-2010, 12:38 PM
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Re: SPUN a Rod Bearing!! Now What ???

Basically, extreme heat and pressure. Alot of things can cause that.

Some people are like slinkies - not really good for much.
But they bring a smile to your face when pushed down the stairs.
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post #62 of 63 Old 01-21-2010, 11:35 AM
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Re: SPUN a Rod Bearing!! Now What ???

I posted this in another thread but thought it might help others searching the threads....


If you think that you may have spun a beering: must read

Funny how some can hear a spun beering over the internet.
The first test is to test your oil:
Drain the oil and filter into a clean mortar pan. Then while the drain plug is still off pour in a quart or two of warm low weight ~5W30 motor oil to push the residue out of the pan. Then look for silvery stains on top of the old oil caused by the beerings. Using a funnel, magnet and a coffee filter. Place the filter into the funnel then the magnet. Pour the oil through the filter. It will grab all of the beering material if there is any.
Next; repace the oil and filter. Start the engine and track the noise down using a stethiscope if advalible.
Once you narrow it down to the closest cylinders:
Starting with the closest cylinder, pull the spark plug wire (ground it) and restart the engine. The noise should have drastically changed. If the knock didn't then repeat the test with the surrounding cylinders until you find the correct cylinder.
The reason for the knock to diminish is because by not firing that cylinder you have taken away the force causing the knock.
Using a helper to start and start the engine, this test should only take a couple of minutes.

Many use an old plug wire w/ the plug side cut off and stripped back and grounded to the engine (Aligator clips speer this up). Then w/ eng off pull the plug wire at the dizzy and install the grounded one. Start the engine till you hear or don't hear the knock, then kill the engine. If knock sounds the same, then go to the next cylinder plug wire and retest....

This test should only take ~15 minutes or so.

NOTE:
1.For ease of writing this please realize that more than one cylinder may have beering woes and the knock sound may only change as one of the affected cylinders plug wire is disconnected.

2. As for being able to accurately diagnois a spun beering over the internet, others may, but my hearing just isn't that good.

Some people are like slinkies - not really good for much.
But they bring a smile to your face when pushed down the stairs.
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post #63 of 63 Old 01-21-2010, 10:09 PM
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Re: SPUN a Rod Bearing!! Now What ???

Curious but why do you need to ground the one wire out and connect to the dizzy and put it in place of the cylinder wire you are pulling off?
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