I believe in the quote you to refer to, Rich was talking about the first 61 engine. 65 came later and used CNC program already setup for the 61 sleeves. He also wrote about having just the first 61 motor with odd timing.
Hi Steven
No ,Richard was talking about the 65 not the 61, Randy asked for lenght on the pipe for the 65, from all I have read and heard from people who actually checked the timing on the engines,
I would stick with what I suggested for Randy to do.
Also Richard stated that they started to use the higher timing in the new engines about 2 or 3 years ago
Check the timing on the engine he has,
You stated that he should use the same timing as your Jett 51, on his 65, because most of the Jetts are timed the same.
Looks like their is a good possiblity that there maybe a big differance in timing between your 51 and his 65.
That was my only point, check it then you will know. Other people have and were surprised.
Richard and other are running longer pipes, (some out to 19 or 20 inches) and this makes perfect sense if the timing is higher than 135 degrees. It's just a matter of doing the math, higher timed run longer pipes, lower timed runs shorter pipes.
Randy