Lol good point about the water being sucked in, but I'm still a bit worried about there being an opening for water or mud to get in.
I'll look at spacing the actuator with some washers and see how that goes. If not enough I'll cut and thread the rod.
I do find that the spool is slower than I expected, reading on the IH8MUD forums there is a guy providing modified CT26's which spool much quicker. Claims 21psi by 2000rpm but I would have though this would mean a much smaller exhaust wheel so would limit boost up around 3000 to 3500 rpm.
Mine doesn't make 16psi until maybe 2700 or so. Could be a lazy worn actuator letting too much air through the waste gate I guess.
I'm the guy from iH8mud with one of the modified CT26's. If you want more spool up you need fuel and a free flowing exhaust, I had my stock CT26 running 21psi, they dont have ceramic wheels.
Have now upgraded to modified CT26 and its significantly better than the stocker, I have been able to max out the fuel pump and keep EGT's well under control now at 20psi, though I have had it up to 30psi. Can hold the boost all the way to the governer, remember the CT26 is designed for much larger motors than a 13BT.
The wheels arent smaller, if they were boost would be worse as the clearance to the housing would increase. New turbo has much better designed wheels than the original unit.
our 3b 60 series has a ct26 on it and does sorta the same 7psi at 2400rpm. Get some in the know to have a look at your boost comp as it prob could do with an adjustment to help spool time.
Getting the ct26 modded could end up being a big cost/small gain exercise. If after more boost/better power might be better to look at a different turbo.
The modded CT26 is a low cost big gain exercise, less than $1K AU for a bolt on new turbo. Swapping to a different turbo will quickly add up to more than that