Plastigage or not??????
 

I'm almost ready to start rebuilding the engine and one of the first things to do is assembly of the crankshaft & the crank rod's.

In Wayne's book he explains how to measure the clearances between shaft & rod with plastigage. He also mentioned that the're are sceptics on using Plastigage.

While this is my first time rebuilding a 911 engine, I was wondering what your experiences are with using Plastigage and how you guys detemined whether the clearances are sufficient.

I appreciate your help!!

I use precision instruments since I work in a machine shop but plastigage is a reasonable measurement tool that you can use to check bearing clearances.

I used Plastigage when I rebuilt my engine. Just followed all of Wayne's instructions and the clearances were just right. I also checked all six rod bearings to make sure they were all just right. I used ARP bolts so retorqueing was not a problem.

Hessel

For what is worth my engine builder doesn't use plastigauge he just used a dial bore gauge on the case and rods. Plastigauge is more difficult to work with and I think the results are too variable

Neven

All the tools in the world are nice......but good ol plasti guage is good for a mental check.....also you sleep better at night cause you know your machine shop did it right...you have the correct bngs installed and stuff.
I remember one time I was assy. a eng almost did not ck the work....WOW I had been shipped wrong size mains (1 size loose!) so I would say I am not embaresed to use the stuff.
"Thats all got to say about that" (-Forest Gump-)