What Are Your Tricks To Hold The Crank Consistent When Plastigauging Mains?

[Kevin Jones]

I don't have a jig built, motor is on an engine stand. I am all about the impromptu tricks if you have any you can share. Mic'd journals and feel confident about bearing selection. Just need a little faith from the plastigauge.

 

[Kevin Jones]

Rods not on, do not want to put them on at this point.

 

[sixpack577]

Plasti guage should only be used when you can't use a bore guage or dial indacator.
It's only so accurate.
I would pay a reputable machine shop if you can't check it yourself, other than plasti guage.
Not to say it doesn't work, but given the time, money, and performance of these engines, I wouldn't want to just get it close. I'de want to know it was right, and the readings on the specs are accurate.
Just my 2 cents.

 

[Kevin Jones]

Rob Bohrs explained a way, going to give it a shot. Actually easier than trying to get the cases together, my dowels are tight. Measuring the inside bore of bearings with mains torqued n subtract journals. Hopefully Suzuki was close with the color coding. Sure spent a lot on these bearings to be off.

 

[Kevin Jones]

Was looking at comp cams dial bore gauge kit but it is only accurate to .001. Far from what I need. Anyone recommend a kit?

 

[mjl3truck]

https://www.zoro.com/mitutoyo-dial-bore-gage-14-25-in-00001-in-res-511-752/i/G3383877/
Good tools cost good money.

 

[Kevin Jones]

Definitely. As soon as I get out of the hole I will be investing. Used plastigage for this one. Not happy with it but I was in the hole for a crank and limited.

 

[ali123]

That's the question isn't it? are the best builders out there also the best tuners?? That's why its important when doing a build.. if ure not doing it yourself... pick a guy that has standing in the industry... so if a mistake is made.... ure guy STANDS BEHIND his work.... when 50 people have their hands in something.... no one is to blame.