I just received 2 ST46 engines back from rebuild by Frank Bowman. He did an awesome job and over time I will send all my STs to him.
The question I have is that I now need Venturis and NVA for them. I have looked around and know that there are two types available for the ST, a true/sprinkler and the restrictor/center type. Also, there are aluminum and delrin venturis. Is there an advantage of one over the other?
I also want to ask if it would be wise to have several different intake diameters for tuning purposes when I eventually place these in planes?
Thomas