keep in mind your compression rings,on most engines, both constantly rotate in the pistons ring grooves and do so at different rotation rates so the ring seal is constantly changing slightly as the engine runs in most engines.
yes there are piston designs that prevent the second compression ring from rotating, yes rings can be slightly bent during improper installation or installed incorrectly or with the wrong end gap.
at times having an inspection tools handy when you can't get a good look at a problem any other way
if your going to buy a used short block or a bare block from an un-known private source or most salvage yards, obviously you'll need to do BOTH a close inspection, WITH some measuring tools
AND get some idea of the blocks physical condition
this is also a good inspection tool
http://www.thetoolwarehouse.net/p-6283- ... pv618.aspx
GOOGLE PV-618 and PV-636
High resolution lens provides a clear image of objects as close as 3/4 inch and over one foot away while providing a wide 40 degree field of view.
Powerful lamp illuminates dark crevices on-demand with the push of a button conveniently located on the handle.
Ergonomically designed handle is comfortable to hold and allows one-handed focusing and light activation.
Rugged and water resistant, ProVision is made of high impact ABS and flexible cable sheathing. (Note: Shaft is water resistant, not the handle.)
PV-618 and PV-636 models have .23†diameter, flexible, non-obedient cable. Durable carrying case included.
Accessories available to optimize ProVision for specialized applications.
Made in the USA
Specifications:
Cable Length: 18" (457.2mm)
Cable Diameter: .23"
Handle Length: 6" (152.4mm)
Handle Width: 1.43" (36.2mm)Overall Length: 24" (609.6mm)
Weight of Scope w/ Carrying Case: 1 lb. 5.7 oz (615 g)
Field of View: 40°
Optimal Viewing Distance: Min. .8" (20mm); Max. is dependent upon ambient lighting conditions.
Lamp Volts: 2.7 volts (Halogen)
Power Source: 2 AA batteries (not included)
Pressure Necessary to Operate Lamp: 2.9 avg. p/psi; 3.2 max. p/psi
heres a cheaper version that works with a lap top computer
GCA 5.5mm Diameter USB Waterproof 6 Led Endoscope Borescope Inspection Wire Camera (5m)
Price: $18.50 & FREE Shipping on orders over $49. Details
- Waterproof wire endoscope
- Diameter:5.5mm head, 5 meters long flexible tube
- High resolution 1.3MP with 1/12" VGA CMO
- 6 LED lighting adjustable, can be inspected the hard-to-see areas.
- Waterproof : IP67, 60°Viewable Angle. Can take photo & video and save in your computer
http://garage.grumpysperformance.co...ing-grooves-and-related-info.1797/#post-36469
http://garage.grumpysperformance.com/index.php?threads/installing-rings-in-piston-grooves.9490/
http://garage.grumpysperformance.com/index.php?threads/no-computer-now-what.13973/#post-71209
http://garage.grumpysperformance.co...-clearance-effects-ring-seal.5454/#post-16301
http://garage.grumpysperformance.co...ing-piston-to-bore-ring-seal.3897/#post-15720
http://garage.grumpysperformance.com/index.php?threads/ring-gaps-on-pistons-moved.4602/#post-12273
http://garage.grumpysperformance.com/index.php?threads/piston-rings-related-info.2795/#post-7240
http://garage.grumpysperformance.co...c-piston-ring-info-youll-need.509/#post-11921
