Toymods Car Club Inc: Tech & Conversions => Can cylinders be bored eccentric???

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Jayem
Forums Junkie

Location:
Finland
Registered:
November 2002

Re: Can cylinders be bored eccentric???

Fri, 30 January 2004 09:54

Thanks so far!

"align boring" was the term I was after.

Ok! It looks like only 2 and 3 would have to move closer because 1 and 4 lines with compression chambers.

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id be talking to the machinist you plan on using, not us, as they will be more familair with their individual machining capabilities than us

I would rather be laughted at here than in the machine shop Razz

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are you using floating piston pins etc

This was part of my plan!

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Ed is dead correct in stating that the problem will most likely lie with the conrod to journal alignment posing the biggest problem. The rebuild books generally point to about .25mm side clearance for the rod big end - moving it 1mm will certainly cause this to bind.

I can make eccentric conrods so that they would line piston centerline and have suitable endfloat(0.16-0.26mm according to haynes)

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As a matter of interest, a lot of engines have different spacing between the cylinders. This is usually due to where the thrust bearing is placed.

Block that Im thinking is like this but the head has even spaces between every chamber.

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Given the add-on effects of offsetting the bore along the line of the crankshaft already mentioned, wouldn't it be easier to weld up and remachine the headspaces

This is including matter of course Smile

.

Ok! Shoot me with good questions and I'll see would this work.

BTW. pics and more facts are coming.

[Updated on: Fri, 30 January 2004 09:57]

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