Help crank wont turn when i tighten cap 3

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Mattwv
Posts: 1
Joined: November 6th, 2020, 5:58 pm
Stroker Displacement: 4.7
Vehicle Year: 1991
Vehicle Make: Jeep
Vehicle Model: Wrangler

Help crank wont turn when i tighten cap 3

Post by Mattwv »

I bought a crate stroker kit and am assembling the block. When i tighten cap 3 which has the thrust bearing it locks the crank up. Any ideas?
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lamart72
Posts: 3
Joined: March 21st, 2016, 6:30 pm
Vehicle Year: 1991
Vehicle Make: Jeep
Vehicle Model: Comanche
Location: South Texas

Re: Help crank wont turn when i tighten cap 3

Post by lamart72 »

Start by looking at the bearing shells. Are they the correct size? Is the crankshaft standard sized or are the mains ground undersized? Did you measure the crank mains with a micrometer? At that point, did you have all the other caps and bearings on? Were they torqued down? Give us a rundown on the specs and what you did to the crank right before you had this problem so we can get a better idea of what might have happened.
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