Rotary Yamaha WaveRunner YEA@!
Thread Starter
Joined: Aug 2002
Posts: 2,828
Likes: 1
From: Houston Tx
Rotary Yamaha WaveRunner YEA@!
Well i have started my own Waverunner project
Here are some details, put running out of time to type.
98 Yamaha XL1200W Waverunner
S4 13B
Custom Exhuast
Weber Intake
Custom Pulley transfer case
Here is some info i posted inanother Thread about a automatic Balancer
There are normaly 1 water cooling line on a waverunner to do all the cooling, but i taped another line off the Jet drive to supply water for the motor. So one is going to cool the Oil/Water intercooler(IE 84-85 Frist Gen) and the other is there to cool the motor.
The temp really wont be that big of a problem, The water flow is not as high as you are thinking, 1in line is what is cooling the motor. This has show to keep the motor in the 150F Range. Witch i think is acceptable to run in.
The coupling on the motor to the jet drive is the biggest problem with this hole dam thing, Finding bearing rated around 9000(Over driving the Impeller) and Power Band belts that will also work on 4in pulleys.
If i had a dam Camera if would take some picks.
Here are some pics of another guy that has started one of these projects in a sea-doo
http://pg.photos.yahoo.com/ph/dvdsg...ir=7735&.src=ph
Here are some details, put running out of time to type.
98 Yamaha XL1200W Waverunner
S4 13B
Custom Exhuast
Weber Intake
Custom Pulley transfer case
Here is some info i posted inanother Thread about a automatic Balancer
There are normaly 1 water cooling line on a waverunner to do all the cooling, but i taped another line off the Jet drive to supply water for the motor. So one is going to cool the Oil/Water intercooler(IE 84-85 Frist Gen) and the other is there to cool the motor.
The temp really wont be that big of a problem, The water flow is not as high as you are thinking, 1in line is what is cooling the motor. This has show to keep the motor in the 150F Range. Witch i think is acceptable to run in.
The coupling on the motor to the jet drive is the biggest problem with this hole dam thing, Finding bearing rated around 9000(Over driving the Impeller) and Power Band belts that will also work on 4in pulleys.
If i had a dam Camera if would take some picks.
Here are some pics of another guy that has started one of these projects in a sea-doo
http://pg.photos.yahoo.com/ph/dvdsg...ir=7735&.src=ph
Thread Starter
Joined: Aug 2002
Posts: 2,828
Likes: 1
From: Houston Tx
talk about custom everythang, wow. so how far along are you? my neighbor and I were talking about the same thing the other day, his motor mounts broke and his motor flopped around in ther. we were hitting 12ft rollers in the columbia when it broke, lol.
GET SOME PIC SOON
GET SOME PIC SOON
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Thread Starter
Joined: Aug 2002
Posts: 2,828
Likes: 1
From: Houston Tx
Originally Posted by slow_2ed_gen
how are you going to run an oil cooler?
I am going to use a 1st gen, Stock Water/Oil Cooler, But i no from taking to this guy that he is using a Marine Water to Oil intercooler.
Thread Starter
Joined: Aug 2002
Posts: 2,828
Likes: 1
From: Houston Tx
Was going to add that, I am trying to use as much stock stuff off of Rx-7s as i can.
I am using these parts from Rx-7's
84 Oil Cooler
93 Auto Flywheel
84-85 13B Counterweight
52mm Weber Carbs
1st gen Ignition, NON-Split spark
3rd Gen Coils, Very small and good fit
These are my Custom Built Parts
Motor mount/5Qt Oil Pan
Power Train
Intake, less Carb
Water Cooled Exhuast, Not using Atkins
I will think of more later i guess
I am using these parts from Rx-7's
84 Oil Cooler
93 Auto Flywheel
84-85 13B Counterweight
52mm Weber Carbs
1st gen Ignition, NON-Split spark
3rd Gen Coils, Very small and good fit
These are my Custom Built Parts
Motor mount/5Qt Oil Pan
Power Train
Intake, less Carb
Water Cooled Exhuast, Not using Atkins
I will think of more later i guess
Thread Starter
Joined: Aug 2002
Posts: 2,828
Likes: 1
From: Houston Tx
Originally Posted by SS124A
um, i wouldn't use the 84/85 rear counter-weight on the S4 13B...
Well i am using a GSL-Se motor so this is the correct counterweight, It is a S3 13B
Thread Starter
Joined: Aug 2002
Posts: 2,828
Likes: 1
From: Houston Tx
Was going to, But had a problem with the motor when i was taring it apart. One of the Exhuast Diffusers fell out when i removed the exhuast manifold
So i switched engines, good thing all 13b's are the same size.
So i switched engines, good thing all 13b's are the same size.






















