For example, say you’re building a stock small block 350 Chevy with 5.7-inch rods and a 3.48 inch stroke. Divide rod length by the crank stroke and you get the rod ratio. Then guess what happens? The LHS or manufacturer gets a call. Rod ratio is the mathematical relationship between the overall length of the connecting rods and the stroke of the crankshaft. If misinformed information is given and only one poster backs that up in the eyes of someone new that can relate to being the gospel. Most of which are new to R/C or new to Nitro or engines in general. I just want to point out that many people read these posts. The result is a secure hold on the wrist pin which may move during engine operation. Some pistons (higher quality such as JE, Arias etc) have a dowel pin to keep this from happening.Īlso to clear up any of my "narcissistic posts" where "I'm right, you're wrong". Found within the piston pin port, this clip is fastened in place to hold the piston pin in place. As stated above this is only temporary in some cases as side loading on the piston will rotate the clips. Thanks Of all the engines I have ever built (30+ years worth) 2&4 stroke, Gas, Diesel, Methenol, Nitro, Super Charged, Turbo'd and even Steam powered the only "rule" about wrist pin clips has been to turn the ends of the clips 180* away from the removal slot. Proper pin and bearing installation should result in a piston assembly in which the. Note: The piston pin may feel considerably tighter than with conventional designs and possibly may not be turned easily by hand. Round 'wire' style clips identical to and interchangeable with stock Harley-Davidson Evolution clips.
WRIST PIN G CLIP INSTALLATION DERECTION FREE
If wristpin clips are used, insure that groove in piston is free of burrs and foreign matter.
WRIST PIN G CLIP INSTALLATION DERECTION INSTALL
I'll never think that my post will be so popularīut in reality, on 2 strokes motocross engine, the orientation of this pin have an influence, and should be install in the right position.Īnd it is for this reason i've ask this for r/c nitro engine. Lubricate the pin with clean engine oil and install in the bores with the bolt holes facing the connecting rod, away from the dome. Pass clean, lint-free cloth back and forth through wrist-pin bore several times to insure removal of contaminants.