Question re liners in a relieved block.

[Mart]

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.

[Russ/40]

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.

[flatheadmurre]

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.
Don´t forget to shamfer it or getting the rings in ain´t to fun.

[Ziggster]

Don't folks use a router to relieve non-relieved blocks? If so, wouldn't that give you a more consistent height?

[JWL]

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.

[macdonge]

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Ziggster is right. Somewhere on YouTube a guy posted how he uses a router to do this.



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[Ol' Ron]

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.

[macdonge]

Here's the link for the YouTube video I referred to:

https://www.youtube.com/watch?v=EV13OkevWS4

[Mart]

Thanks guys.
I don't have a router but have ordered some carbide burrs.
The block is already relieved.
Things are progressing!
Mart.