Originally Posted by
Dan944
Remoove piston, and shine a light in there and clean out and make sure there are no scores, could even be out of round and have sealing problems as mine did? This was common on these as they were shot alot with excess oil and constantly dieseling causing a bulging cylinder. So could be that your new seal is not supple enough to flear and seal the serfacr properly.
What to do first is have a look as I said a above, then put the original seal back on and with the new spring as it is and re crono. If power goes up it back to original power or more than you have now, then you have a sealing issue that you need to address first. Weather it is just the cylinder is as I mentioned above or your new leather seal is too sanded it not soaked and soft enough.....?
This is your first place to look. It could be oversprung but it gets more and more technical and for the power you have discribed, you really need to look into the advice I've mentioned first and go from there.....Daniel