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-   Engine Performance (https://www.miataturbo.net/engine-performance-56/)
-   -   Crankshaft hard to turn with new bearings (https://www.miataturbo.net/engine-performance-56/crankshaft-hard-turn-new-bearings-82694/)

Lee04vr 01-18-2015 11:41 AM

The block and caps need to be lined honed if the crank won't spin with the caps installed.

miata2fast 01-18-2015 01:21 PM

i wonder if you have something between the bearing and block or cap.

guttedmiata 01-18-2015 02:30 PM


Originally Posted by Lee04vr (Post 1197729)
The block and caps need to be lined honed if the crank won't spin with the caps installed.

I sure love when people feel the need to repeat what's already been said.:facepalm:

sixshooter 01-18-2015 06:09 PM

I've seen one incorrect bearing in a set (+.010 oversized). It happens. Just because you take them out of the same boxes, doesn't mean the are right. Put a micrometer on each of them for thickness.

Godless Commie 01-18-2015 06:18 PM


Originally Posted by sixshooter (Post 1197822)
I've seen one incorrect bearing in a set (+.010 oversized). It happens. Just because you take them out of the same boxes, doesn't mean the are right. Put a micrometer on each of them for thickness.

No fair.
I said "move bearings around" yesterday.

Joe Perez 01-18-2015 08:09 PM


Originally Posted by sixshooter (Post 1197822)
I've seen one incorrect bearing in a set (+.010 oversized). It happens. Just because you take them out of the same boxes, doesn't mean the are right. Put a micrometer on each of them for thickness.

I keep coming back to this:

Originally Posted by mr.skywalker (Post 1197521)
The same binding occurs with the old bearing in place

Until the question about why the crank doesn't spin with the old bearing is answered, the new bearings belong on the shelf.


Question for Skywalker: is the crank damaged? IOW, if you were to take it to a machine shop and have them spin it with a dial indicator on all the mains, what would the runout be?

mr.skywalker 01-19-2015 09:53 AM

Well I figured it out. It was just that one set of caps were mixed up, I must have mixed them up when I took it apart. That's why I prefer doing my engine builds in a short period, usually one or two days so my memory is fresh off what I did. Thanks for the help guys

curly 01-19-2015 11:41 AM

I win!

[IMG]insertyeahbitch.gifhere[/IMG]

Midtenn 01-19-2015 12:38 PM


Originally Posted by curly (Post 1197990)
I win!

[IMG]insertyeahbitch.gifhere[/IMG]

I just makes your avatar even more appropriate.

PaCHeKo! 01-19-2015 09:23 PM

My caps have stamped number on them.. thats how I identify them

Glad you found your problem ;)


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