the new bob weight is 2225.old one was 2368.do you have pics of the one you did at 2230?where and how much weight were the slugs?was it a scat forged 4.250 fe crank?
did scat change there 4.250 crank forgings at any time?

so it goes bad to ugly on this crank balance.i bought a new set of molnar h-beams that are almost 70 grams lighter,and a set of pins that are 20 grams lighter,so bob weight went down to 2225 ,sounds good right? well now it moved the front weight completely off the counterweight into space,to the right ,and the rear is to close to edge to put a weight in it.my guess is this is a junk crank from scat!counterweights must be mislocated.i will have to source another crank,as i wont changed pistons/rods etc.so i will contact scat on monday.
any of the engine builders on here can tell me if you had a scat forging that was defective ?counter weights clocked wrong or bad machining?would removing weight from other end of counterweight bring it in?
any one please help.
maybe scat will help.

This issue has been showing up more and more.  I think it is because of pictures attached to the post that are too large for the software to handle.  But not sure about that.  I have seen the same thing, where when logged in you can't see the post, but if logged out it shows up.  Weird, and unfortunately I have no solution...

jay,on the post with the sohc heads cracks,i tried to put a 16mb picture in that by mistake and thats when it went bad.if you can delete my post on that i think it will clear up.

I'd hit the brakes until we see some weights

I took a Diamond shelf piston for a SOHC with a 4.25 crank and 6.700 rods, 4.28 bore from the catalog and they are 640 grams, Racetec usually comes in heavier in both pin and piston than Diamond,

Then looked at even the lightest Oliver at 825 grams, and they go up from there, and my make-believe combo comes in at a bob of 2365 grams. 

I can't remember if the target for a SCAT was 2000 or 2100, but I believe 2000, so you need to offset 365 grams.  Add maybe some more pork from Racetec and if he is running Oliver Max series or a big bore, and it could be real.

I have never had to, but you can weld to extend the counterweight, or even add to the counterweight with a machined piece.  I have seen SBC guys do all kinds of crazy stuff.

thats what i am going to do.also if a lighter pin,and rod would help it, but i dont know those weights yet.

not sure what happen but my post doesnt show up?
can you post a link on what heads you are looking at on ebay?

thank you for your reply.i will ask builder on monday for the weights and also call scat to ask about crank.the x he marked is where the machine wants the weight and its not enough room to put that much in the front.the rods are oliver 6.700 and piston is custom race tech dome for 489 sohc.1.345 comp height.i dont think its all that heavy,but i could be wrong.

yes,thank you to those who replied.i learn somtheing every almost every time i ask here.

you would need  a digital 3d model that can used by the foundry to print the sand.as jay explained to cost of 1 printed mold ready  to pour is not cheap.8 cubic foot sand print would be 1658.at least i think.check with experts here.