08-10-2011, 12:38 PM #1
Drug the old GP out of the field and got it back on the water
Ok so figured for giggles I would post a little about the latest project or Resurrection is more like it! Its an old race ski. 1997 GP1200 that has been sittin outside on the ground since 2004.
1997 Yamaha GP1200
Cylinders have a mild port job from when the motor was used in a Mission Yamaha race ski
hotrods rotating assy.
stock single pipe
Oem head milled by Dan Fitzgerald (back when he was with Riva) (200psi)
Stock carbs with some boring and mods by Dan Fitzgerald
Carbon fiber reeds and billet spacer
Solas XO prop
Pro-Tec intake Grate
Pro-Tec ride plate
Riva Trim Tabs
Stock steering and reduction nozzle
Free flow exhaust
Well got it all cleaned up, running and finally got it on the water Yay!!!!
First time out results
Temp 97 degrees
788ft above sea level
humid as all get out!
half tank of gas
GPS'd 64.4 mph at about 7300rpm consistantly
I am pretty pleased with the results. Got some more work to do but its on its way!
Carbs running very rich and spins prop to limiter on take off before it really grabs
Thats what she looked like sittin out there all weathered and in dire need of attention
08-10-2011, 12:44 PM #2
Working on building another motor for the GP and in thinking about going another route with the head.
Anybody have any RIVA,ADA,etc etc aluminum heads laying around?
08-10-2011, 02:33 PM #3
08-10-2011, 04:26 PM #4
I might have a riva bb girdled head for sale with 34cc domes. I iwll let you know after I get done testing the new ADA head I got with 33cc domes.
08-10-2011, 05:08 PM #5
Awesome, Thanks just let me know about the head
Yea been havin a blast playin with the old ski! So much fun to throw them around compared to the new one!
08-10-2011, 06:24 PM #6
nice i hope you are running race gas @200psi
08-10-2011, 09:58 PM #7
Nothing like 114 sunoco in the morning. The slight burn in the eyes.
08-10-2011, 10:30 PM #8
thats what im talkin bout little brother!
08-10-2011, 11:25 PM #9
Oh yes I am! 109.5 turbo blue. Now if I could only follow myself around the lake all-day it would be a perfect world. Sunshine, bein out on the water and that sweet sweet heavily aroma of racing fuel.Lmao
08-10-2011, 11:31 PM #10
Ok got the second motor all cleaned up and looks like all I will need is a set of piston.
Gonna be on the lookout for a set of either 1mm or 1.5mm over 65u pistons to complete an old school Dan Fitzgerald custom ported motor.
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