Pressed Main Bearing??? WTF?
Posted: March 21st, 2009, 3:05 pm
WTF is this?? Is it going to force me to look for another crank?
Jeep Strokers
Jeep - AMC 4.0L and 4.2L Stroker Enthusiasts
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Pressed Main Bearing??? WTF?
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Re: Pressed Main Bearing??? WTF?
Posted: March 21st, 2009, 3:32 pm
not sure if i see the problem...... maybe i'm missing what the question is, but i don't see anything abnormal there....
Re: Pressed Main Bearing??? WTF?
Posted: March 21st, 2009, 4:28 pm
When everything is cleaned up, and new main bearings are at hand, they will press on with thumb pressure.
John
John
Re: Pressed Main Bearing??? WTF?
Posted: March 21st, 2009, 4:29 pm
The bearing halves should pop right out if you fiddle with them.
Re: Pressed Main Bearing??? WTF?
Posted: March 21st, 2009, 4:58 pm
So all 258's have this as the #3 main bearing? Its completly different than all the others. You can even see on the crank itself that this journal is much larger than all the others... I guess im just that much of a noob to where i dont know that its something normal!!
Re: Pressed Main Bearing??? WTF?
Posted: March 21st, 2009, 5:03 pm
I don't see a problem either. That is the #3 thrust bearing, its what keeps your crank where it should be in the engine in regards to front and back.. The 4.0l has one as well.
Re: Pressed Main Bearing??? WTF?
Posted: March 21st, 2009, 5:07 pm
Oh yeah im a total noob! Thanks for not laughing at me!!
Re: Pressed Main Bearing??? WTF?
Posted: March 21st, 2009, 7:31 pm
Couldn't resist.
Hey Mister NOOOOOB site-owner, thats what we are here for!!!
Re: Pressed Main Bearing??? WTF?
Posted: March 21st, 2009, 9:12 pm
i asked the same question after i took apart my 4.0 and 4.2 side by side. didnt dawn on me at all, even after taking both apart. i asked elsewhere thinking my block was bad or maybe my crank. totally normal.
Re: Pressed Main Bearing??? WTF?
Posted: March 21st, 2009, 9:32 pm
You've done enough right already for us to jump on your case--just don't make us tell you to use the search function.
Re: Pressed Main Bearing??? WTF?
Posted: March 21st, 2009, 10:16 pm
That crank might even polish without turning, that engine looks like it has been cared for more so than most of them on the road!
Re: Pressed Main Bearing??? WTF?
Posted: March 21st, 2009, 10:52 pm
thats the thrust bearing. controls front to rear movement of the crank
steve
steve
Re: Pressed Main Bearing??? WTF?
Posted: March 22nd, 2009, 8:21 am
The distributor drive gear on the cam looks severely damaged. What happened to this engine?
Re: Pressed Main Bearing??? WTF?
Posted: March 22nd, 2009, 11:25 am
Nothing that im aware of.. i got it for free. Someone was going to use it to replace their 258 .. but then found out they didnt need to replace the engine. Ive got it all put back together now to just get rid of it... or else id pull the cam and take a pic.Heck wrote:The distributor drive gear on the cam looks severely damaged. What happened to this engine?
Re: Pressed Main Bearing??? WTF?
Posted: May 19th, 2009, 9:55 am
I was just getting ready to ask this question 
when I used the "search tab" ............LOL. Dale at self
when I used the "search tab" ............LOL. Dale at self