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> Plastigauge mains?, how to?
goose2
post Feb 13 2006, 05:33 PM
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I'd like to do a dry run on my lower end assembly to check main bearing clearances with Plastigauge. I assume I can just bolt it up and torque it down using only the main bearing saddle bolts, with no sealant, to get a reading. It's a 3.0 six. Is this correct?
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Randy
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type47
post Feb 14 2006, 11:55 AM
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QUOTE (Jake Raby @ Feb 14 2006, 06:34 AM)

A good test is to plop the crank into the case with all the bearings installed and lube the crank with 20 wt oil ONLY, none of that BS assembly lube... Then torque the case up and then rotate the crank using an inch pound dial indicating torque wrench. If it takes more tha 10" pounds to rotate the crank in the case, the clearances are too tight.. If it takes less than 5" pounds to rotate it, more than likely they are loose...


then do you just adjust the torque on the case bolts accordingly ? .... then the factory specs become guidelines?

maybe hot vw's mag has a web site for subscriptions. i'd like to make sure i get your article.
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Posts in this topic
goose2   Plastigauge mains?   Feb 13 2006, 05:33 PM
Cap'n Krusty   Case been align bored? Crank been turned? Measur...   Feb 13 2006, 05:44 PM
goose2   Thanks for the reply. Everything measures good Cap...   Feb 13 2006, 11:49 PM
Jake Raby   Plasticgage is near impossible to use on mains.......   Feb 14 2006, 08:34 AM
Joe Ricard   Hey that's cool tid bit of info. Jake are you ...   Feb 14 2006, 10:10 AM
Jake Raby   I'm pretty much caught up now... magazine guy...   Feb 14 2006, 10:51 AM
type47     Feb 14 2006, 12:57 PM
Jake Raby     Feb 14 2006, 01:06 PM
LvSteveH   With regard to the plastiguage issue, some of the ...   Feb 14 2006, 01:22 PM
goose2   Thanks for all the good advice. I've built per...   Feb 14 2006, 01:58 PM
Jake Raby   I would like to add that the specs I gave were for...   Feb 14 2006, 05:20 PM
Mark Henry   I've only ever used it once in 20 years of bui...   Feb 14 2006, 05:24 PM

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