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02-03-2020, 05:54 PM | #1 |
Senior Member
Join Date: May 2010
Location: Solihull, England.
Posts: 8,745
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Question re liners in a relieved block.
Hi guys, I have a question.
I have fitted liners to a relieved block. What method do you use to bring the liner height down to the height of the relief? If a carbide burr, what shape works best? Thanks in advance. Mart. |
02-03-2020, 06:26 PM | #2 |
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Join Date: May 2010
Location: Santee, California
Posts: 3,505
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Re: Question re liners in a relieved block.
I used a carbide burr that was ball shaped. To do it again, I would use a cylindrical burr with a ball end. With just the ball it is more difficult to control the burrs tendency to wander. Whatever burr you use, some practice on a junk part will give you the feel for controlling where the burr goes.
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02-04-2020, 01:26 AM | #3 |
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Join Date: Apr 2015
Location: Sweden
Posts: 3,045
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Re: Question re liners in a relieved block.
I mill them at the same time as decking.
Its a fair chance that after pounding in liners you need to deck it slightly. Otherwise the tree radius shape is my favourite when it comes to carbide burrs. Donīt forget to shamfer it or getting the rings in ainīt to fun. |
02-04-2020, 04:50 AM | #4 |
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Join Date: Aug 2018
Location: Ottawa, ON
Posts: 850
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Re: Question re liners in a relieved block.
Don't folks use a router to relieve non-relieved blocks? If so, wouldn't that give you a more consistent height?
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02-04-2020, 05:03 AM | #5 |
Member Emeritus
Join Date: May 2010
Location: Fitzgerald, Georgia
Posts: 2,204
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Re: Question re liners in a relieved block.
I just use a oval shaped carbide burr for roughing and finish with a stone about 3/4" diameter that is pointed at the end for matching up the corners. And, I agree a good chamfer is important.
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02-04-2020, 07:07 AM | #6 |
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Join Date: May 2015
Location: Frelighsburg, QC
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Re: Question re liners in a relieved block.
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02-04-2020, 07:29 AM | #7 |
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Join Date: May 2010
Location: Chester Vt
Posts: 8,857
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Re: Question re liners in a relieved block.
Allot of good information here. However, I don't feel that reliving a block does no more than reduce the compression. and very little to improve performance. Flow bench tests I run say relieving the cylinder head is more beneficial.. Unfortunately, some blocks come from the factory that way.
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02-04-2020, 07:44 AM | #8 |
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Join Date: May 2015
Location: Frelighsburg, QC
Posts: 166
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Re: Question re liners in a relieved block.
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02-04-2020, 07:47 AM | #9 |
Senior Member
Join Date: May 2010
Location: Solihull, England.
Posts: 8,745
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Re: Question re liners in a relieved block.
Thanks guys.
I don't have a router but have ordered some carbide burrs. The block is already relieved. Things are progressing! Mart. |
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