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cc tool diameter
Posted: Mon Jan 20, 2003 3:41 am
by elvisisgod
i want to measure the cc of my heads. i can get the discs cut and drilled to exact sizes but need to know the diameter!! for a standard 1600 head i presume i cut them to the outer diamter of the cylinder (- a couple of though that i will smaer with grease to get a good seal) any advice/help/abuse welcome
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viva las vegas baby
cc tool diameter
Posted: Mon Jan 20, 2003 2:55 pm
by vicsvw
85.5 is Piston Diameter so just add about 1/8" to that.
cc tool diameter
Posted: Mon Jan 20, 2003 3:05 pm
by Marc
<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by elvisisgod:
<B>for a standard 1600 head i presume i cut them to the outer diamter of the cylinder (- a couple of thou...)
</B><HR></BLOCKQUOTE>
Nominal dimension is 93.8mm; you can always file/grind/sand it down later I suppose but don't make it fit too snugly or it'll be an annoyance to pull out (the grease doesn't need to fill the whole void, just a film around the perimeter of the face will do).
Here's a tip - drill the "fill hole" well off-center, it'll make it easier to chase the bubble when the chamber is almost full. If you use a center-piloted cutting tool you'll need to epoxy the center hole shut.
cc tool diameter
Posted: Mon Jan 20, 2003 3:15 pm
by elvisisgod
chears guys
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viva las vegas baby
cc tool diameter
Posted: Mon Jan 20, 2003 3:46 pm
by bartman
Nominal dimension is 93.8mm
i just measured my 85.5 mm kymko cc disc and it's about 93 and a half or so.
[This message has been edited by bartman (edited 01-20-2003).]
[This message has been edited by bartman (edited 01-20-2003).]
cc tool diameter
Posted: Mon Jan 20, 2003 5:25 pm
by RT
Like Marc said. Drop the plexi-glass disc into the head. Mark the spot to drill a 5/64" hole at a point just at the inside edge of the combustion chamber. After the hole is drilled, use a 5/16" drill to put a taper on the "outside" end of the hole. It helps for filling with the 60ml syringe you can pick up for a couple of bucks at any farm supply. You don't need the actual needle unless you feel like sharing with a bus-load of junkies.