engine disassembly

shelbe67

Member

Apr 10, 2004

309

0

17

Jan 13, 2008

#1

• Jan 13, 2008

• #1

I have an engine that I am about to disassemble. It has 30,000 original miles. I thought that it mite have a knock but now I realize that it mite have been a misadjuted rocker. I was looking for an excuse to put my 347 in the car anyway lol. Well I am down to just the shortblock and am gonna strip it down further to freshen up the engine. What should i be looking for? what parts should I keep? the cylinder walls have no scoring so I dont think it has to be bored out. I would like to keep everything as original as possible, this isnt actually for a classic stang the 347 is. This is the original engine to my 93 cobra that I wanna make factory stock again thanks alot guys!

 

D

D.Hearne

New Member

Sep 29, 2000

11,730

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south louisiana

Jan 13, 2008

#2

• Jan 13, 2008

• #2

With only 30,000 miles, I'd just clean it and put it back together. Leave the short block together, as is, just clean it up. Maybe only install a heavy duty oil pump drive is all.

 

P

pazur

New Member

Jul 5, 2007

82

0

0

northern Virginia

Jan 13, 2008

#3

• Jan 13, 2008

• #3

rocker can be accessed by removing valve cover only so you don't really have to go very deep. how did you figure out that the rocker is a problem? bad compression?

 

shelbe67

Member

Apr 10, 2004

309

0

17

Jan 13, 2008

#4

• Jan 13, 2008

• #4

to be honest the car had tfs heads on it I had never adjusted adjustable rockers before and when I swapped in the other engine I misadjusted them also kinda made the same noise. I have some rust on the cylinder walls forming I just checked the block. I just dont wanna put it all back together in the car and it really be a knock from the bottom end. I have rebiult engines before just never tore one down to make sure everything is ok I always had the intention of rebuilding the engine so I never really cared. thanks!

 

D

D.Hearne

New Member

Sep 29, 2000

11,730

6

0

south louisiana

Jan 13, 2008

#5

• Jan 13, 2008

• #5

If it's a rod bearing knock, chances are it's a spun bearing. Easy to spot just by removing the rod caps.

 

shelbe67

Member

Apr 10, 2004

309

0

17

Jan 14, 2008

#6

• Jan 14, 2008

• #6

thanks guys I am gonna try to get to it tommorrow. what if I have a piston slap? just wondering cause a buddy of mine had that once. If the bearings are ok then it should be ok to just put it all back together? do you think I should do the rings or the bearings while I am there or should it be ok? what should I do about the flash rust on the walls?

 

D

D.Hearne

New Member

Sep 29, 2000

11,730

6

0

south louisiana

Jan 14, 2008

#7

• Jan 14, 2008

• #7

If it's just surface rust, leave it alone, the rings will take care of it when you fire it up. 30,000 miles, the bearings are just broken in. I'd just inspect it and put it back together if nothing's out of the ordinary.

 

T

truck90278

New Member

Jun 4, 2006

382

1

0

Redondo Beach, CA

Jan 16, 2008

#8

• Jan 16, 2008

• #8

If you put new rings in , you will have to hone the cvylinder walls (lightly), which will remove any rust.