What size is the main stud?
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14 Second Truck Club
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From: Bossier City, LA
What size is the main stud? Taking the engine apart and I've got the 10mm and 1/2" bolts out. I don't have any long sockets for the studs and need to buy one, but don't know what size it is. Does anybody know? Thanks.
There shouldn't be any fractional fasteners on the Gen III/IV engines. A half inch wrench or socket (6 point or open end) will fit a 12 mm hex, but you'll round off the corners of the fastener, so don't do it.
On the main studs, are you talking about removing the nuts or removing the studs out of the block? If you are talking about removing the studs out of the block, after you loosten the nut initally, loosen it up a revolution or so away from the main cap and put another "jam" nut on top and tighten the two together using two wrenches or an open end and a socket. Then back the stud out by turning the bottom nut that is next to the main bearing cap.
Have you rebuilt an engine before? If not, I'd advise getting some help from someone who is knowledgable on this sort of thing.
All my best,
Steve
On the main studs, are you talking about removing the nuts or removing the studs out of the block? If you are talking about removing the studs out of the block, after you loosten the nut initally, loosen it up a revolution or so away from the main cap and put another "jam" nut on top and tighten the two together using two wrenches or an open end and a socket. Then back the stud out by turning the bottom nut that is next to the main bearing cap.
Have you rebuilt an engine before? If not, I'd advise getting some help from someone who is knowledgable on this sort of thing.
All my best,
Steve
Thread Starter
14 Second Truck Club
iTrader: (6)
Joined: Sep 2002
Posts: 2,343
Likes: 0
From: Bossier City, LA
Originally Posted by Steve Bryant
There shouldn't be any fractional fasteners on the Gen III/IV engines. A half inch wrench or socket (6 point or open end) will fit a 12 mm hex, but you'll round off the corners of the fastener, so don't do it.
On the main studs, are you talking about removing the nuts or removing the studs out of the block? If you are talking about removing the studs out of the block, after you loosten the nut initally, loosen it up a revolution or so away from the main cap and put another "jam" nut on top and tighten the two together using two wrenches or an open end and a socket. Then back the stud out by turning the bottom nut that is next to the main bearing cap.
Have you rebuilt an engine before? If not, I'd advise getting some help from someone who is knowledgable on this sort of thing.
All my best,
Steve
On the main studs, are you talking about removing the nuts or removing the studs out of the block? If you are talking about removing the studs out of the block, after you loosten the nut initally, loosen it up a revolution or so away from the main cap and put another "jam" nut on top and tighten the two together using two wrenches or an open end and a socket. Then back the stud out by turning the bottom nut that is next to the main bearing cap.
Have you rebuilt an engine before? If not, I'd advise getting some help from someone who is knowledgable on this sort of thing.
All my best,
Steve
