General opinions on a 75+HP R3 platform - Yamaha R3 Forum
User Tag List

 4Likes
Reply
 
Thread Tools
post #1 of 13 Old 05-14-2019, 03:16 PM Thread Starter
Junior Member
 
Join Date: May 2019
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
General opinions on a 75+HP R3 platform

As the topic title opines, what is the feeling of the faster R3 pilots on the practicality of the chassis (with what ever needed mods) supporting 75+rwhp?

I started my motorcycling on the 80's Yamaha entry level candidate - an RZ350YPVS.

So when the R25/R3 appears a few years back I got to thinking about an RZ powered R3. I have to believe someone has already done it. I heard Wicked was involved an RZ3 project but not sure how that progressed.

I understand the tank/airbox layout of a modern 4 stroke, and the chassis is meant for 35 to 40hp, but even the RZ350 had a hinge in the middle feeling about it under power, so I have to believe the R3 is better suited to the task.

I had a short ride on an R3 a while back and it felt like I expected a very low power 4 stroke would.

Fire away
RC45 is offline  
Sponsored Links
Advertisement
 
post #2 of 13 Old 05-14-2019, 05:49 PM
Member
 
Tom Liberatore's Avatar
 
Join Date: Nov 2018
Location: Northern Cal,
Posts: 47
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 12 Post(s)
Garage
50-60 HP would make me happy, I hope those turbo patent photos were for the R3. Other than that, a 500cc version of the MT-7 engine should fit in an R3 really nicely.

Pepperoni Bros. Racing
Tom Liberatore is offline  
post #3 of 13 Old 05-15-2019, 01:00 AM Thread Starter
Junior Member
 
Join Date: May 2019
Posts: 9
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Yeah, a 500cc 4 stroke is just more of the same

I am looking for my 2 stroke hit.

I have a 360lb wet weight RZ500 that is only good for about 90rwhp - and it is a a whole lot of fun.
RC45 is offline  
Sponsored Links
Advertisement
 
post #4 of 13 Old 05-24-2019, 09:46 AM
Senior Member
 
Join Date: Nov 2016
Posts: 531
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 287 Post(s)
Not likely

Sent from my SM-G930V using Tapatalk
bbsteinnewyork is offline  
post #5 of 13 Old 05-29-2019, 10:09 AM
Junior Member
 
Andysrage's Avatar
 
Join Date: Aug 2018
Location: near Philadelphia, PA
Posts: 16
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 2 Post(s)
Ari Henning and Zack Courts put a Banshee 350 motor (non-YPVS version of RZ350) into an R3 on a episode of Throttle Out on Motor Trend's video service. Having owned a 1989 TDR250 (YPVS 250 twin) in the past that put 45hp to wheel in stock trim, I'm certain the RZ mill in an R3 would be a blast.
Andysrage is offline  
post #6 of 13 Old 05-29-2019, 12:53 PM
Senior Member
 
Join Date: Dec 2017
Posts: 281
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 70 Post(s)
Wicked Motorsports in California are developing a 2 stroke conversion kit for the R3. Just take a donor engine from a banshee and let her rip. Not sure how much longer it'll take but you can follow their progress on facebook.

Milc
Milc is online now  
post #7 of 13 Old 05-31-2019, 05:07 PM
Junior Member
 
Keith's Avatar
 
Join Date: Mar 2019
Posts: 24
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 5 Post(s)
Back in the day there were a few RD/RZ350 motors fitted into first and second generation Suzuki RG250 Gamma chassis. They were highly regarded.
Keith is online now  
post #8 of 13 Old 06-15-2019, 03:40 AM
Senior Member
 
Join Date: Nov 2016
Location: Ban Nong Weng, Chaiyaphum province, Thailand
Posts: 133
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 40 Post(s)
Just a bit of input from an old timer.

I had a 250cc, YDS7 Yamaha. When the RD series came out it where found the g/box had been changed internally and the YDS7 bottom end became desirable with the gears all being so close you never dropped out of the narrow power band.
Once the RD barrels had been fitted and ported with the larger carbs from the 350.
This motor were quick, when the engine came on song with that never to be forgotten two stroke "WAIL", you could feel the tubular frame flex.

Making specials in the 70's, early 80's were a lot easier than now.
Attached Thumbnails
Click image for larger version

Name:	bike 001.jpg
Views:	35
Size:	171.6 KB
ID:	65085  
f1lupo, 9Nails and Tom Liberatore like this.

Last edited by TMD5855; 06-15-2019 at 03:47 AM.
TMD5855 is offline  
post #9 of 13 Old 06-16-2019, 12:14 PM
Member
 
f1lupo's Avatar
 
Join Date: Jul 2016
Location: Toronto, Canada
Posts: 78
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 16 Post(s)
Thumbs up

@ TMD5855


awesome pic thanks for sharing
TMD5855 likes this.

2015 Yamaha R3-blue/silver
2004 Honda CBR600RR- blue/red
1997 Kawasaki KLX300R- green/purple
1981 Yamaha MX80- blue/white
& too many others to fit here
f1lupo is offline  
post #10 of 13 Old 06-20-2019, 12:59 AM
Super Moderator
 
xorbe's Avatar
 
Join Date: May 2015
Location: Bay Area / Central Valley, CA, USA
Posts: 1,236
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 416 Post(s)
An honest 55 whp would be killer in an R3 platform. 75 might be a bit too much imho. The nice thing about a humble power level is twist-n-go. Not enough power to get into instant trouble, but enough power to really get moving pretty dаmn quick.
xorbe is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Yamaha R3 Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Need Honest and Open Opinions! Shaun Ketterman Yamaha R3 General Discussion 14 09-06-2018 03:41 PM
bridgestone S21 vs. S20 evo front tire - opinions requested D4V1T Tires 3 04-01-2018 12:17 AM
Hello from SoCal! Need opinions with miles and maintenance vs cost MetalSlug Introductions 21 01-21-2018 11:55 PM
Custom R3 (Opinions?) architectofmusic Yamaha R3 General Discussion 9 07-06-2017 08:52 AM
Opinions on the blue 2016 decals Baz Yamaha R3 Purchases and Orders 8 07-04-2016 06:36 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome