JASON11WS6

iTrader: (7)

I'm currently putting together a ls1 short block. I've got the crank in and bolted in. It spun freely but as I added the pistons I can't find away to spin the crank as easy. I found an old crank bolt and tossed it in and it'll spin a bit and then I feel the bolt just stretching. It seems to be stuck between two points but it moves back and forth between those points. So my question is, can I find an easier way to spin the crank so I can tighten the rod bolts or is something messed up? Should it spin pretty easy with the pistons in? Maybe one of my piston rings is jacked up?

KCS

iTrader: (20)

It should still move easily with the pistons in. You're probably doing something wrong.

SteveDoten@ARH

Jason, you just answered your own question regarding the rings; better to question now than 10 hours of labor getting the motor dressed and into the car

without the rods in, you could spin the crank using the snout/timing gear with minimal effort?

I'm assuming you've done the 140degrees rotation and the oe tq procedure on the stock crank bolt a few times, getting the bolt to 'stretch' as you posted is nuckin futs if you don't have a flywheel bolted on with the KMoore locking tool

wildcamaro

iTrader: (15)

Do you just have rod caps snugged in place? Are they stock rods? With a complete long block and spark plugs out I could turn the crank with very minimal effort...liked suggested check everything again and save yourself some headache!

96s-10ss

iTrader: (16)

If you cant assemble the shortblock without "stretching" a stock crank bolt, then you have clearance problems my friend...

Nissan LS240

iTrader: (1)

Are you building a stroker, sounds like you might be hitting the cylinder wall with a rod, pistons shouldn't add resistance when turning the crank with no heads bolted on,

6spdg37s

iTrader: (1)

something is def not right... better to check it now than build the whole thing and have a problem