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Tool Hut
Tool Hut, ASE Certified Technician
Category: GM
Satisfied Customers: 551
Experience:  Owner of a mobile diagnostics company assisting auto technicians with difficult vehicles
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2002 Pontiac grand Prix 3.1 SE. I rebuilt the in in process

Customer Question

2002 Pontiac grand Prix 3.1 SE. I rebuilt the in in process and the oil control rings it is a 3 PIECE are bigger then the Original ones seems but I think they are because they are worn or maybe the wrong ones . I cannot put the psiton with the new oil rngs inside the block but old ones I can I have a set of Mahle 41865CP type. I had the block honed recently.
Submitted: 1 year ago.
Category: GM
Customer: replied 1 year ago.
I have new rings and same pistons and recently honed block just the oil rings or control rings get stuck when trying to install into the block. Not sure what can do or try
Expert:  Tool Hut replied 1 year ago.

Hi, My Name is ***** ***** for posting your question to just answer. I am a independent contractor for just answer. ASE Certified Master Auto Technician with 20 years experience. I am confident we can resolve your problem together.Please remember I don't know your skill level. I can't see, smell, hear, or touch the vehicle. It may take a few back and forth replies to get to a satisfactory resolution.There will probably be some equipment needed for a proper diagnosis. If you are not comfortable with this or do not have any test equipment please let me know ASAP. I also give you all of the information you may need in good faith expecting a positive rating. I am not compensated for my time until you leave a positive rating. Your rating should be based on the service you received.

So with a ring compressor you cannot compress them enough? I am confused

Customer: replied 1 year ago.
Correct my 3rd oil ring wil not compress the two outer rings. The block was honed recently. The old rings will fit fine
Expert:  Tool Hut replied 1 year ago.

do you have a ring compressor?

Expert:  Tool Hut replied 1 year ago.

If you remove the metal outer rings do they fit in block flat alone? What is your ring end gap?

Customer: replied 1 year ago.
wonder why old ones fit good
Customer: replied 1 year ago.
When i install them the new ones look bigger can i send pic to you
Expert:  Tool Hut replied 1 year ago.

You didn't answer my question. Are you using a ring compressor? yes you can send pic

Customer: replied 1 year ago.
Expert:  Tool Hut replied 1 year ago.

have you fitted the rings on the cylinder and measured ring end gap?

Customer: replied 1 year ago.
I fitted the rings in cylinder and need to measure. They fit right in
Customer: replied 1 year ago.
I will take better pic when get home
Expert:  Tool Hut replied 1 year ago.

Remove ring and fit in cylinder without piston. My immediate suspicion is that your oil groove needs to be cleaned. I would suggest soaking the pistons in some strong cleaner.

Customer: replied 1 year ago.
Hi, please opt out of the question page, I need an answer from a different GM Expert. Thanks