LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Takes/put in pistons from the bottom?

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Old Apr 4, 2008 | 07:31 PM
  #1  
bombebomb's Avatar
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Takes/put in pistons from the bottom?

Going to fix my car, its either a spun rod, or a wrist pin. So either way the piston must come out, was wondering if you have to take the heads off, or if you can just put in and take out from the bottom safely. Im sort of worried about breaking a ring. So any advice you guys have would be great.
NOTE: I will be removing the engine (never relised how it sounded when I first posted sorry)

Last edited by bombebomb; Apr 4, 2008 at 08:43 PM.
Old Apr 4, 2008 | 07:37 PM
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Not going to happen and if it is a rod bearing the crank will need at very best a polishing but more likely a turning.
Old Apr 4, 2008 | 07:40 PM
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Do you have any idea how it is to get the oil pan off with the motor in the car and how little room there is to reach the bottom end due to the K-memeber?

Most people would pull the motor if a piston has to come out and yes the piston has to go in the top with the head obviously off. One the piston is pulled you should install new rings.

Unless you are a magician, the motors coming out.

Last edited by wrd1972; Apr 4, 2008 at 08:27 PM.
Old Apr 4, 2008 | 08:10 PM
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just remove the engine. it sucks but honestly it will be easier
Old Apr 4, 2008 | 08:43 PM
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Originally Posted by Zigroid
just remove the engine. it sucks but honestly it will be easier
I guess I should of specifided, I WILL be removing the engine
Old Apr 4, 2008 | 10:12 PM
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Why dont you want to take off the heads then?
Old Apr 4, 2008 | 10:17 PM
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Originally Posted by bombebomb
I guess I should of specifided, I WILL be removing the engine
pistone won't come out the bottom, and how would you put it back in?

Its a one way street
Old Apr 4, 2008 | 10:55 PM
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Originally Posted by GreasyB
Why dont you want to take off the heads then?
Just another new gasket ill have to pay for. Do you need to take the intake off to get the head off (I aint looked at my motor for months).

Originally Posted by mdacton
pistone won't come out the bottom, and how would you put it back in?

Its a one way street
Take out bottom, put in bottom. From what im gathering, its top or nothing.
Old Apr 4, 2008 | 11:05 PM
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Originally Posted by bombebomb
Just another new gasket ill have to pay for. Do you need to take the intake off to get the head off (I aint looked at my motor for months).

Take out bottom, put in bottom. From what im gathering, its top or nothing.
Exactly. The whole top of the engine has to come off.
Old Apr 4, 2008 | 11:09 PM
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yes you will have to take the intake off to get the head off. Just go to the autoparts store and buy a intake manifold set. The felpro pt# is MS95580. its 16.99 at O'reilly's. then either buy a headgasket from some one or I have 2 felpro gaskets that I'll sell you cheap.
Old Apr 4, 2008 | 11:26 PM
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Ok, thanks guys, thank you for the part # kylersaulsbury looks like ill be draining oil gathering gaskets/parts, and pulling motor tomarrow.
Old Apr 5, 2008 | 01:17 PM
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The only one you can do through the bottom is piston 7.
Other than that, out the top.
Old Apr 5, 2008 | 02:56 PM
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Originally Posted by sam pace
The only one you can do through the bottom is piston 7.
Other than that, out the top.

Yep, the main bulkheads are in the way. I'm not sure you could even get it back in, good luck getting a ring compressor up in there. Do it out the top, head gaskets aren't that expensive.
Old Apr 5, 2008 | 03:20 PM
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Originally Posted by mdacton
pistone won't come out the bottom, and how would you put it back in?

Its a one way street
Jeez, now you sound like my wife.

Rich
Old Apr 5, 2008 | 03:29 PM
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Originally Posted by rskrause
Jeez, now you sound like my wife.

Rich



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