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Do-It-Yourself H.Q.
Share your DIY projects or ask questions about how to fix something on your own. Help fellow Bimmerfest members improve your wrench turning skills! All BMW DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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  #1  
Old 10-24-2012, 06:28 PM
jpdunn101 jpdunn101 is offline
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Location: Texas
 
Join Date: Oct 2012
Posts: 36
Mein Auto: 330I
Replacing Bent Rod Hydrolocked 3.0L M54

I just bought a hydrolocked 2002 330I sport pkg, 5 speed, silver, sunroof, loaded, 91k miles. I will have about $2,100 in it before I begin repairs. I know the cars history and actually persuaded the PO to buy this car.. I love BMW's in general and this is a really sweet one!

I have a lot of experience with performance builds.. mostly big domestic v8's in muscle cars. I am not scared of the M54 3.0L but have no experience with these engines. It has a steady knock that is likely the bent rod tapping against the block skirt. I killed the cylinders one by one.. no change in noise, pulled all the plugs and could still hear it tap lightly as my helper cranked it.
So I checked compression across all 6 cylinders and found:

#1-115 psi
#2-120
#3-95
#4-130
#5-125
#6-120

My guess is #3 rod is bent and knocking with a possible slight bend in #1.
My plan is to buy a good service manual and pull the engine for a partial rebuild. I have a good shop space with air tools but no lift so I would think I could block the car securely about 3 ft above the floor and pull the engine out the bottom (something I have never done).. stick it on my stand, repair damaged components, re-install with a new clutch and good to go!!

What am I missing?
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  #2  
Old 04-29-2013, 05:06 PM
joshuakgotcher joshuakgotcher is offline
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Location: USA
 
Join Date: Apr 2010
Posts: 2
Mein Auto: 318 ic
So how did it go?

I think i have the same thing on my dad's M3. my sister drove thru some deep water and it has CAI! was it difficult? expensive?
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