Connecting Rod Clearances

carl hinkson · 06-25-2017, 10:50 AM

Quote:

Originally Posted by Dwight Southerland

Use micrometers - inside and outside. Plastigage will not give you accurate measurements. Waste of time and effort.

Believe me compared to some of the cheap bore gauges out there. NEW Plastigage its not that bad is pretty simple how a piece of waxed string works.

I have guys check my clearances with it seem to right in line with what I set them at with my Sunnen Bore gauge.

Here is are some good threads on checking bearing clearances.

http://www.performanceboats.com/gn7-...learances.html

http://www.speedtalk.com/forum/viewt...a58c2&start=15

jrstock · 06-26-2017, 09:21 PM

Follow Up

I found on a past classracer post that is very difficult to take a few tenths off a connecting rod journal.
http://www.classracer.com/classforum...ad.php?t=53273

These were the other options I looked at:

1) Polish connecting rod journal

2) Hone Rod Big End

3) Grind Crank to .040 Under

In the end swapped to another crank rather than risking any of the above options.

Thanks for the advice!

06-26-2017, 09:21 PM	#2
jrstock Junior Member Join Date: Feb 2015 Posts: 16 Likes: 0 Liked 0 Times in 0 Posts	Re: Connecting Rod Clearances Follow Up I found on a past classracer post that is very difficult to take a few tenths off a connecting rod journal. http://www.classracer.com/classforum...ad.php?t=53273 These were the other options I looked at: 1) Polish connecting rod journal 2) Hone Rod Big End 3) Grind Crank to .040 Under In the end swapped to another crank rather than risking any of the above options. Thanks for the advice!