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View Full Version : 1988 Donzi Z21 Question



jamieZ
09-27-2007, 07:43 AM
I have a Z21 with a 350MAG, side exhaust and a 19 inch S/S Mirage Prop.It runs perfect. Top speed is about 50MPH at about 4600 Hundred RPM. Does this sound right? I checked with a couple of prop sites and that's what is recommended, a 17 inch for watersports and a 19 inch for speed.Thanks for all input, Jamie

MOP
09-27-2007, 08:14 AM
Sounds like it is running just fine, there is a yellow one here by me. I got to speak with the owner awhile back he said it did 51 on GPS. Nice boat enjoy!!!

Phil

mrfixxall
09-27-2007, 02:23 PM
I have a Z21 with a 350MAG, side exhaust and a 19 inch S/S Mirage Prop.It runs perfect. Top speed is about 50MPH at about 4600 Hundred RPM. Does this sound right? I checked with a couple of prop sites and that's what is recommended, a 17 inch for watersports and a 19 inch for speed.Thanks for all input, Jamie

sounds like toy need to try a 14 1/4 x 18 p turbo 2+2 and you will get the best of both worlds:wink:

The Hedgehog
09-27-2007, 03:14 PM
That's funny. I recently talked to a guy that turned a Z-21 into an 80 mph sleeper/screamer. And yes, this guy is for real. It took a good bit more than a prop though.

That speed sounds about right for that combo. You could probably wring out a few more by props these days.