The Ford Barn

Daveyjonez · 06-11-2018, 03:54 PM

Hi Guys:

What is the cleanest way to install cup plugs in 4 inch merc crank??

Thanks in Advance,
Dave

Bored&Stroked · 06-11-2018, 04:42 PM

Not sure what 'cleanest" means, but the most common manner is to knock the soft plugs in so that the edges are just below the outside of the rod throw, then put a few punch 'dimples' around the parameter - such that they are not "blown out" by the oil pressure. This is the same procedure that is used when you put in the 1/2" soft plugs on the front of a SBC block - for the oil galleys. On more race oriented builds, we tap the throws for threaded plugs (and the galleys on a SBC). This should be done before the balancing operation is done. Make sense?

51 MERC-CT · 06-11-2018, 04:44 PM

A loose fitting steel rod that has a spherical end. (and wash you hands and possibly antiseptic rubber gloves? )

Daveyjonez · 06-11-2018, 05:11 PM

Sponsored Links (Register now to hide all advertisements)

I want even cleaner! Should I shave all the way to the elbows before the gloves??

Sorry for the contiversy in using the word “cleanest”-

I installed one as I normally knock expansion plugs in- looks a little rough around the edges for my liking...”dirty” if you will.

I was looking for “I normally use ...to tap them, in just below the surface then stake.” Like a round length of steel rod.

Thanks again, I will go back into my cave now.

06-11-2018, 03:54 PM	#1
Daveyjonez Member Join Date: Nov 2015 Posts: 89	Mecury Crank Cup Plug Install Question Hi Guys: What is the cleanest way to install cup plugs in 4 inch merc crank?? Thanks in Advance, Dave

06-11-2018, 04:42 PM	#2
Bored&Stroked Senior Member Join Date: Jan 2011 Location: Central Ohio Posts: 5,068	Re: Mecury Crank Cup Plug Install Question Not sure what 'cleanest" means, but the most common manner is to knock the soft plugs in so that the edges are just below the outside of the rod throw, then put a few punch 'dimples' around the parameter - such that they are not "blown out" by the oil pressure. This is the same procedure that is used when you put in the 1/2" soft plugs on the front of a SBC block - for the oil galleys. On more race oriented builds, we tap the throws for threaded plugs (and the galleys on a SBC). This should be done before the balancing operation is done. Make sense?

06-11-2018, 04:44 PM	#3
51 MERC-CT Senior Member Join Date: May 2010 Location: East Hartford, Ct Posts: 5,898	Re: Mecury Crank Cup Plug Install Question A loose fitting steel rod that has a spherical end. (and wash you hands and possibly antiseptic rubber gloves? ) __________________ DON'T RECALL DOING SOMETHING FOR MYSELF BASED ON SOMEONE ELSE'S LIKES OR DISLIKES

06-11-2018, 05:11 PM	#4
Daveyjonez Member Join Date: Nov 2015 Posts: 89	Re: Mecury Crank Cup Plug Install Question Sponsored Links (Register now to hide all advertisements) I want even cleaner! Should I shave all the way to the elbows before the gloves?? Sorry for the contiversy in using the word “cleanest”- I installed one as I normally knock expansion plugs in- looks a little rough around the edges for my liking...”dirty” if you will. I was looking for “I normally use ...to tap them, in just below the surface then stake.” Like a round length of steel rod. Thanks again, I will go back into my cave now.