impotance of Boring a block
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Senior Member
Joined: Jul 2005
Posts: 5,650
From: Summerville, SC
impotance of Boring a block
hey guys i'm about to order forged pistons and rods for my eclipse, but i'm curious, everybody has said to bored the block and get oversized pistons but i'm curious, is it important? do you really need to?
Banned
Joined: Feb 2006
Posts: 16,176
From: Austin, TX
RE: impotance of Boring a block
Not 100% nessecary nope.
Make sure you run it in correctly to get the most out of your engine.
http://www.mototuneusa.com/break_in_secrets.htm
Make sure you run it in correctly to get the most out of your engine.
http://www.mototuneusa.com/break_in_secrets.htm
Senior Member
Joined: Jan 2005
Posts: 1,375
RE: impotance of Boring a block
boring is prep work for putting new pistons in a block. Because of the way pistons/rods move, over time cylinder walls become egg shaped. Boring just brings them back to a perfect circular shape to new pistins will make a good seal. and just to be clear, boring is not the same as increasing displacement for power, the idea is to bore as little as possible while still letting the pistons make a good seal. Whoever builds your motor will know what to do....
Senior Member
Joined: Sep 2005
Posts: 490
From:
RE: impotance of Boring a block
ORIGINAL: DSMTalonAWD51
boring is prep work for putting new pistons in a block. Because of the way pistons/rods move, over time cylinder walls become egg shaped. Boring just brings them back to a perfect circular shape to new pistins will make a good seal. and just to be clear, boring is not the same as increasing displacement for power, the idea is to bore as little as possible while still letting the pistons make a good seal. Whoever builds your motor will know what to do....
boring is prep work for putting new pistons in a block. Because of the way pistons/rods move, over time cylinder walls become egg shaped. Boring just brings them back to a perfect circular shape to new pistins will make a good seal. and just to be clear, boring is not the same as increasing displacement for power, the idea is to bore as little as possible while still letting the pistons make a good seal. Whoever builds your motor will know what to do....
You may have the definition of Boring mixed up with Honing.. Honing is more like as you described above as far as prepwork in restoring a cylinders round shape and cross hatch. Boring realigns the cylinder to make it squared and true to the block while slightly increasing displacement. Boring should be followed with honing.
Joel, CA
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