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Chevrolet 91177398 Piston Kit,Std,Mark 2 (On Esn) *Std, Stamped

1989-2000 Chevrolet

Customer Questions & Expert Answers (4)
GM 91177398 Piston Kit,Std,Mark 2 (On Esn) *Std, Stamped
  • Part Description
    PISTON, Engine
  • Replaces
    91174383, 96060040
  • Manufacturer
    General Motors
  • Manufacturer's Notes
    This part is discontinued.
Make sure this part fits
  • Related Parts
  • Product Specifications
  • Vehicle Fitment
  • Customer Questions & Expert Answers
  • Product Specifications

    BrandGenuine Chevrolet
    Manufacturer Part Number91177398
    Part DescriptionPISTON, Engine
    Other NamesPiston
    Item Dimensions4.2 x 3.6 x 3.3 inches
    Item Weight1.00 Pounds
    ConditionNew
    Fitment TypeDirect Replacement
    Replaces91174383, 96060040
    Require Quantity3
    ManufacturerGeneral Motors
    SKU91177398
    WarrantyThis genuine GM part is guaranteed by GM's factory warranty.
    Shipping & ReturnShipping Policy Return Policy
    Warning: California's Proposition 65
  • Vehicle Fitment

    Year Make Model Engine Important vehicle option details
    1989-2000 Chevrolet Metro3 Cyl 1.0L, 4 Cyl 1.3L2 DOOR, 4 DOOR, CONVERTIBLE, LSI 2 DOOR, LSI 4 DOOR, LSI CONVERTIBLE
    1989-1991 Chevrolet Sprint3 Cyl 1.0LLSI 2 DOOR, LSI 4 DOOR, LSI CONVERTIBLE
  • Customer Questions & Expert Answers

    Q:
    I am wonder if this is complete and correct part for my vehicle. Posted by GMPartsGiant Specialist
    A:
    You can Select Your Vehicle to check if 91177398 fits your vehicle.
    Posted by GMPartsGiant Specialist
    Q:
    What steps should be taken before installing the piston and connecting rod assemblies on Chevrolet Metro? Posted by Customer
    A:
    When engaging the piston and the connecting rods, be certain that the walls of the cylinders are free from contaminants, the top of the cylinders are cut along a taper and the crank shaft is already in place. In the same manner installed, unscrew the cap from the number one connecting rod, and pull out the originals bearing inserts and clean the bearing surfaces with a clean, lint-free rag. Remove the old upper bearing insert and clean the front side of the new upper bearing insert along with the rear side of the connecting rod and then lay the new upper bearing insert in the connecting rod in such a manner that the tab sits in the recess without hammering the tab in or damaging the face of the bearing. Do the same for the other bearing insert in the rod cap, and make sure that all the faces making contact are free of oil and dirt. Align the piston ring gaps properly, slide a portion of a hose over each of the connecting rod cap bolt, wet the piston and the rings with clean engine oil and then place a piston ring compressor on it with the skirt sticking out to help in the pushing of the piston into the cylinder. Screw or turn the crankshaft in such a manner that the number one connecting rod journal is located at the bottom dead center of the engine block and then apply engine oil on the cylinder walls. Place the piston/close coupling in the cylinder bore with the arrow on the piston vertical to the front of the engine and retracted ring compressor into the block. Tap the piston lightly with a wooden or a plastic hammer handle in order to help you align the connecting rod on the crankshaft journal and at the same time ensure the depression on the ring compressor do not cause the rings to come out. After installation, the connecting rod bearing oil clearance should be checked by Plastigage, while the bearing surfaces are clean, and the connecting rod bearing should be lubricated with a thin layer of grease or assembly lube before the connecting rod is slid over the piston pin and the rod cap nuts are tightened to the proper torque. That is doing for the other pistons and connecting rods with the clean bearing inserts and connecting rods, the correct piston/rod combination, and the lubrication on the cylinder walls and bearing faces. Last, but not the least, with all the assemblies in place, turn the crankshaft to feel for binding and then to measure the connecting rod end play and compare with standard measurements to confirm the correct setting. If needed, rebury the rods at an auto machine shop, while the remaining components can be reinstalled in the reverse manner to their removal.
    Posted by GMPartsGiant Specialist
    Q:
    What does corrosion in the form of small pits suggest for the 1990 Chevrolet Metro? Posted by Customer
    A:
    Corrosion suggests coolant leakage, which must be addressed to prevent recurrence.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Piston
    Q:
    What is the next step after removing the cylinder ridges for the 1991 Chevrolet Metro? Posted by Customer
    A:
    Turn the engine upside down so the crankshaft is facing up.
    Posted by GMPartsGiant Specialist
    See expert answers on similar Piston
    If you have any questions about this product, please don't hesitate to ask us. We will be happy to help you!

Genuine GM Part 91177398, the Right Choice

To ensure reliability, purchase GM part # 91177398 Piston Kit,Std,Mark 2 (On Esn) *Std, Stamped. It is sometimes referred to as Chevrolet Piston. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Every single part passed stringent quality testing, so you can be sure that it's safe, durable, and built to perform like your original parts. This part fits specific Chevrolet Metro, Sprint models.

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