If it makes you feel any better, I made a check valve out of Teflon, I tried to pass it through the brass retainer and after about 15 seconds I said "nope...not going to happen". Haha.
The buna rubber pumper diaphragm material worked perfect though! That plus the hole puncher and feeding it through the retainer was all YOUR ideas so no need to apologize haha. I'm thrilled it works! I could repair 10 mini Mac check valves for the cost of a couple carb diaphragms instead of $110 for Walbro check valve kits!!
I'm hoping I can reassemble my MM25 today with the different coil, adjusted points, new metering lever and new carb to manifold gasket and fingers crossed it will scream.
I appreciate that and do wish you the best of luck on the Mini Mac 25. (Please let us know how it works)
However, I can’t take all the credit for the method though. To call it exclusively my own would be wrong, and I must give credit where it is due.
I saw it posted on the Mac thread and was completely awestruck by it. It was the member Hoggwood’s idea to use a different kind of modified punch as a more consistent way of making the valves and slipping it through the retainer. Now while people had made valves before, it was always said that someone could just slip it through the retainer, no one really ever saw any clear proof of concept-- enter the creative powerhouse Hoggwood. And while I’m doubting he was the first to do it, I think he was the first to really popularize it as being a viable way to replace the valve.
Now as for my soap boxing about his method, it is because that after having tried it, it does work… Wonderfully. Of course if my tunnel visioned, hack-ass had looked more closely, or tried instead of assuming, I would have realized that the Teflon idea was a no. And that the only possible way to have a Teflon valve is to either pull the seat and swap the 86-523 valve with a homemade one (which I did), or fork over $ 20 for the 86-520 kit.
Although I am glad that I’ve inspired and helped you accomplish something, and saved you quite a bit of time and money in the long run, I’m not the sole person to thank and am undeserving of all the praise.
While I never claimed the method was my own, looking through the thread I realize that was how it reads and was the impression that I left, which was not my intention and I refuse to take all the credit for it.
So, yes I think it is necessary to apologize for the Teflon suggestion and also to clarify what my contributions are here.