Temp 70 Degreess
Humidity 80%

I tested the Power Core (2.25 inside diameter hole)against the R&D D-Plate on my 1200 converted to 1300R. The instant gain by just switching to the R&D d-plate pipe was of 70-80 RPM's at 1 1/2 turns out of the highs to start. I actuallyu felt the boat to be much stronger. I procedded to remove the stock 1200 ignition and install the Advent CDI using the YAM 84 curve and proceded to tune the carbs but it started raining. I ran the ski for a few minutes at different RPM's and the ski responded very well!!! GREAT BOTTOM AND MID. ITS ALIVE!!!!!!!!

My top speed of the day with 1/2 tank before the wind started to kick was 71.6 MPH. My carbs are still at 1 1/2 turns out. The best adjustment last week was 3/4. I am looking forward to some better numbers this week. Well this will be an awesome ski to run. I got a speedcut prop that will go in as soon as I get it back. We will see and compare results.

Nice... looking better.

They way it has been looking from different peoples results is that the 1300r is about 2-3mph faster than the 1200r.

Keep us posted.

Fernando,sounds like your turning some pretty good numbers and still don't have the ski tuned in yet,your gonna hit 73 maybe 74 for sure.keep up the good work.btw now i'm gonna have to build me one of them 1200 or 1300 or ???? MARK RPM RACING

Cool. Did you try the carbs???

Thanks Fercho,

Do you have the shortened exhaust per R&D also? Just to clarify things the R&D plate your talking about has a smaller hole than the OEM non U.S. D-Plate, correct?

Thanks again. This info is really helpfull.

The wife had our second daughter today. Little Hannah made Father's Day Special.

Spud first of all congratulations on your daughter!!!!!!


I only had the R&D D-plate with the stock untouched manifold!!! and yes the opening is smaller

[ 06-16-2003, 12:02 AM: Message edited by: Fercho ]

Exellent test fernando, keep up the good work