ninjette.org

Go Back   ninjette.org > 2008 - 2012 Ninja 250R > 2008 - 2012 Ninja 250R Tech Talk

Notices

Reply
 
Thread Tools
Old May 18th, 2013, 06:32 AM   #161
Racer x
ninjette.org certified postwhore
 
Racer x's Avatar
 
Name: Eric
Location: Iowa City
Join Date: May 2009

Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X

Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
I use small copper drain plug seal washers.
__________________________________________________
Top speed 123.369mph. Ohio mile
Worlds fastest 250 ninja
Racer x is offline   Reply With Quote




Old May 18th, 2013, 06:36 AM   #162
choneofakind
ninjette.org certified postwhore
 
Name: .
Location: .
Join Date: Feb 2011

Motorcycle(s): .

Posts: Too much.
MOTM - Feb '13, Feb '14
Quote:
Originally Posted by lgk View Post
I'll do it on my next valve adjustment interval.

Looks like a cheap way to pick up a couple of hp, and improve throttle response.
Keep me updated. I'm 200 miles over due for my valve check. I've been putting it off because this is the first week I've been able to ride.
choneofakind is offline   Reply With Quote


Old May 18th, 2013, 07:18 PM   #163
subxero
dirty boy
 
subxero's Avatar
 
Name: Joe
Location: Johnstown, PA
Join Date: Sep 2012

Motorcycle(s): I don't even know anymore??

Posts: A lot.
MOTM - Apr '14
Eric, that thing sounds amazing can't wait to see the numbers.

The temperature readings, where are they coming from? and are they in a good range?
subxero is offline   Reply With Quote


Old May 18th, 2013, 08:22 PM   #164
Racer x
ninjette.org certified postwhore
 
Racer x's Avatar
 
Name: Eric
Location: Iowa City
Join Date: May 2009

Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X

Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
That is the dual exhaust temp gauge. And they are good
__________________________________________________
Top speed 123.369mph. Ohio mile
Worlds fastest 250 ninja
Racer x is offline   Reply With Quote


Old May 22nd, 2013, 04:06 AM   #165
Racer x
ninjette.org certified postwhore
 
Racer x's Avatar
 
Name: Eric
Location: Iowa City
Join Date: May 2009

Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X

Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
I am going to take the bike to the dyno on Saturday. I am going to RnR Cycles in Sterling Virginia. I have used this same dyno from the beginning. This will be a good test to see how much difference the intake cam on the exhaust side makes. Plus I a always testing the nitrous.
__________________________________________________
Top speed 123.369mph. Ohio mile
Worlds fastest 250 ninja
Racer x is offline   Reply With Quote


Old May 25th, 2013, 07:22 AM   #166
tubarney
ninjette.org sage
 
Name: Brad
Location: Sydney
Join Date: Mar 2012

Motorcycle(s): Ninja 250r 2010 SE

Posts: 573
Quote:
Originally Posted by Racer x View Post
I am going to take the bike to the dyno on Saturday. I am going to RnR Cycles in Sterling Virginia. I have used this same dyno from the beginning. This will be a good test to see how much difference the intake cam on the exhaust side makes. Plus I a always testing the nitrous.
Dyno today or next week?
tubarney is offline   Reply With Quote


Old May 25th, 2013, 07:44 AM   #167
Racer x
ninjette.org certified postwhore
 
Racer x's Avatar
 
Name: Eric
Location: Iowa City
Join Date: May 2009

Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X

Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
Sorry Saturday the 22nd of June. My arm is in a sling from shoulder surgery until the 18 th of June. My season is screwed. I am going to test and tune at the drag strip ASAP and dyno run the bike. But my next mile run is not untill September.
__________________________________________________
Top speed 123.369mph. Ohio mile
Worlds fastest 250 ninja
Racer x is offline   Reply With Quote


Old May 25th, 2013, 07:59 AM   #168
tubarney
ninjette.org sage
 
Name: Brad
Location: Sydney
Join Date: Mar 2012

Motorcycle(s): Ninja 250r 2010 SE

Posts: 573
Quote:
Originally Posted by Racer x View Post
Sorry Saturday the 22nd of June. My arm is in a sling from shoulder surgery until the 18 th of June. My season is screwed. I am going to test and tune at the drag strip ASAP and dyno run the bike. But my next mile run is not untill September.
In a sling till the 18th. Thats gotta suck. Just put the clutch and throttle on the same side and ride one handed. Who needs front brakes.
tubarney is offline   Reply With Quote


Old May 25th, 2013, 08:10 AM   #169
mgentz
Board Member
 
Name: ...
Location: WI
Join Date: Dec 2011

Motorcycle(s): 250R (street), 250R (dirt)

Posts: A lot.
Sorry to hear. Heal up.
mgentz is offline   Reply With Quote


Old May 25th, 2013, 10:56 AM   #170
Racer x
ninjette.org certified postwhore
 
Racer x's Avatar
 
Name: Eric
Location: Iowa City
Join Date: May 2009

Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X

Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
I don't have front breaks at all. But I can't load and unload the bike. And I can't put on leathers and I would look really funny trying to get my head into my helmet with one hand.

Ya six weeks in a sling sucks. You should have seen me get the pistons in the block with one arm. Took hours.
__________________________________________________
Top speed 123.369mph. Ohio mile
Worlds fastest 250 ninja
Racer x is offline   Reply With Quote


Old May 27th, 2013, 06:03 PM   #171
LoD575
ninjette.org sage
 
LoD575's Avatar
 
Name: Steve
Location: Valdosta GA, US
Join Date: Jul 2011

Motorcycle(s): 2012 Ninja 250, 2006 Ninja ZX6R-636

Posts: 661
That is a wicked sounding machine you have there Racer. Throttle response was amazing.

Looking forward to the dyno run.
LoD575 is offline   Reply With Quote


Old June 4th, 2013, 02:34 PM   #172
Racer x
ninjette.org certified postwhore
 
Racer x's Avatar
 
Name: Eric
Location: Iowa City
Join Date: May 2009

Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X

Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
Looks like I will be going on the Dyno this weekend June 8. I am going to RNR Cycles in Sterling Virginia. I should be racing in Ohio. But my shoulder had rotator cuff surgery and I can't get into leathers.

The set up for the weekend is .
256cc forged 64mm pistons
12.5 to 1 compression
Two intake cams
Polished combustion chamber
Ported head
CR Special carbs stacks no air filter
BrtrTis ignition system
Takai racing coils
Custom made dual exhaust
25 hp shot of nitrous
I am hoping for 60 hp. But just really want to see the air fuel mixture. It was lean in the cold air of April. But now it is probably close. And I want to see the A/F of the nitrous. I am going to drag race after the dyno. So I need to set up for the short 1/4 mile.
__________________________________________________
Top speed 123.369mph. Ohio mile
Worlds fastest 250 ninja
Racer x is offline   Reply With Quote


Old June 8th, 2013, 08:29 AM   #173
Racer x
ninjette.org certified postwhore
 
Racer x's Avatar
 
Name: Eric
Location: Iowa City
Join Date: May 2009

Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X

Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
On the dyno now. Just pulled 32.5 hp a little rich at 12to 1. And are you ready??

61.10 hp . The 60 hp barrier is broke .
__________________________________________________
Top speed 123.369mph. Ohio mile
Worlds fastest 250 ninja
Racer x is offline   Reply With Quote


Old June 8th, 2013, 08:34 AM   #174
subxero
dirty boy
 
subxero's Avatar
 
Name: Joe
Location: Johnstown, PA
Join Date: Sep 2012

Motorcycle(s): I don't even know anymore??

Posts: A lot.
MOTM - Apr '14


awesome stuff! Make sure you get a good copy of the charts i'm sure lots would love to see it on paper.
subxero is offline   Reply With Quote


Old June 8th, 2013, 08:56 AM   #175
mgentz
Board Member
 
Name: ...
Location: WI
Join Date: Dec 2011

Motorcycle(s): 250R (street), 250R (dirt)

Posts: A lot.
Intake cam in the exhaust was the ticket?

Awesome stuff
mgentz is offline   Reply With Quote


Old June 8th, 2013, 12:35 PM   #176
Racer x
ninjette.org certified postwhore
 
Racer x's Avatar
 
Name: Eric
Location: Iowa City
Join Date: May 2009

Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X

Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
The intake cam was the ticket to jump 5 hp and it did it easy.

BUT I still have some work to do. I don"t want any more power. 60 is enough. Now I need the AF mixture to be more consistent. If it was rich or lean I can fix that. But I have a mixture problem. lean at start and rich at the end. The lean part is bad because it spikes the EGT. not bad at 1100 deg. But it goes rich and I need to be consistent to spray 100% power increase for 30 seconds. It is getting there. Just a little more tweaking.
I forgot to get the charts. Rick has them at RnR and will Email them to me soon.
__________________________________________________
Top speed 123.369mph. Ohio mile
Worlds fastest 250 ninja
Racer x is offline   Reply With Quote


Old June 8th, 2013, 03:19 PM   #177
lgk
ninjette.org certified postwhore
 
Name: Jason
Location: Norfolk, VA
Join Date: Dec 2011

Motorcycle(s): 2012 EX250, 2014 EX300

Posts: A lot.
congrats,
__________________________________________________
Ethioknight Memorial Fund- Sticker sale
http://www.ninjette.org/forums/showthread.php?t=111700
lgk is offline   Reply With Quote


Old June 8th, 2013, 05:09 PM   #178
choneofakind
ninjette.org certified postwhore
 
Name: .
Location: .
Join Date: Feb 2011

Motorcycle(s): .

Posts: Too much.
MOTM - Feb '13, Feb '14
Very impressive!!! Congratulations Eric!!


For just the motor (no nitrous) what's your target AFR?
choneofakind is offline   Reply With Quote


Old June 8th, 2013, 05:20 PM   #179
Racer x
ninjette.org certified postwhore
 
Racer x's Avatar
 
Name: Eric
Location: Iowa City
Join Date: May 2009

Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X

Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
Always looking for an AF above 12 and below 13. And the exhaust should be below 1200 and above 975.
__________________________________________________
Top speed 123.369mph. Ohio mile
Worlds fastest 250 ninja
Racer x is offline   Reply With Quote


Old June 8th, 2013, 07:33 PM   #180
Somchai
Freedom for Germany
 
Location: This World
Join Date: May 2011

Motorcycle(s): Ninja 250R-FI

Posts: A lot.
Congrats Eric
Somchai is offline   Reply With Quote


Old June 8th, 2013, 09:22 PM   #181
choneofakind
ninjette.org certified postwhore
 
Name: .
Location: .
Join Date: Feb 2011

Motorcycle(s): .

Posts: Too much.
MOTM - Feb '13, Feb '14
are you measuring exhaust temps at the header? Sorry, just curious what your method is

I'm glad to see the exhaust/intake cam swap made the difference. Who knew it would be something so simple.
choneofakind is offline   Reply With Quote


Old June 8th, 2013, 09:37 PM   #182
Racer x
ninjette.org certified postwhore
 
Racer x's Avatar
 
Name: Eric
Location: Iowa City
Join Date: May 2009

Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X

Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
I have the EGT probe six inch from the exhaust valve .it is mounted in the header.
__________________________________________________
Top speed 123.369mph. Ohio mile
Worlds fastest 250 ninja
Racer x is offline   Reply With Quote


Old June 11th, 2013, 03:56 PM   #183
Racer x
ninjette.org certified postwhore
 
Racer x's Avatar
 
Name: Eric
Location: Iowa City
Join Date: May 2009

Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X

Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
This is the dyno graph from the all motor pulls. I have the timing retarded slightly and with oxygenated fuel it can make a couple more I would think.
Attached Images
File Type: jpg image.jpg (91.8 KB, 33 views)
__________________________________________________
Top speed 123.369mph. Ohio mile
Worlds fastest 250 ninja
Racer x is offline   Reply With Quote


Old June 11th, 2013, 04:33 PM   #184
mgentz
Board Member
 
Name: ...
Location: WI
Join Date: Dec 2011

Motorcycle(s): 250R (street), 250R (dirt)

Posts: A lot.
Smooth graph. What happens to your af ratio at 8.5k rpm?
mgentz is offline   Reply With Quote


Old June 11th, 2013, 05:17 PM   #185
choneofakind
ninjette.org certified postwhore
 
Name: .
Location: .
Join Date: Feb 2011

Motorcycle(s): .

Posts: Too much.
MOTM - Feb '13, Feb '14
Thanks for posting that Eric. I appreciate that.

Looks like your peak hp is at about 12.5 or so, and you're dipping as low as 12 or high 11's at the top.

I've been trying to get a feel for the best AFR for these bikes with my EFI setup. My bike seems to pull continuously when I set it to 12.7, better than it did when it was set at 12.9. Your pull looks like it agrees with my results. Maybe I'll try 12.6 or 12.5 when I'm at my track day and see which one pulls the best on the back straight.
choneofakind is offline   Reply With Quote


Old June 11th, 2013, 05:40 PM   #186
Racer x
ninjette.org certified postwhore
 
Racer x's Avatar
 
Name: Eric
Location: Iowa City
Join Date: May 2009

Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X

Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
This engine loves fuel. I have no idea what that blip at 8.5k was .. But Rick was just kinda warming the bike up. Might have been a throttle thing.

I wanted to see if the 1 mm more exhaust lift made a difference. Maybe a little.
But 32 at 12.5 is what it always does. Even with nitrous 12500 rpm is top power.

Below 12 to 1 on the A/F and the engine will chug and really loose power.
__________________________________________________
Top speed 123.369mph. Ohio mile
Worlds fastest 250 ninja
Racer x is offline   Reply With Quote


Old June 12th, 2013, 04:35 AM   #187
Dark
Simple kind of man
 
Dark's Avatar
 
Name: Ryan
Location: Stuttgart, Germany
Join Date: Apr 2013

Motorcycle(s): 2013 Ninja 300

Posts: 133
Quote:
Originally Posted by Racer x View Post
Looks like I will be going on the Dyno this weekend June 8. I am going to RNR Cycles in Sterling Virginia. I should be racing in Ohio. But my shoulder had rotator cuff surgery and I can't get into leathers.

The set up for the weekend is .
256cc forged 64mm pistons
12.5 to 1 compression
Two intake cams
Polished combustion chamber
Ported head
CR Special carbs stacks no air filter
BrtrTis ignition system
Takai racing coils
Custom made dual exhaust
25 hp shot of nitrous
I am hoping for 60 hp. But just really want to see the air fuel mixture. It was lean in the cold air of April. But now it is probably close. And I want to see the A/F of the nitrous. I am going to drag race after the dyno. So I need to set up for the short 1/4 mile.
Funny thing you mentioned RnR, going through your thread all I could think about was Ali and his 250 endeavor. He taught me a good deal regarding top speed, posture, form, etc. Rick is a great guy as well, they've tuned the majority of my bikes. Sounds like you're in good hands.
__________________________________________________
Dark is offline   Reply With Quote


Old June 12th, 2013, 05:50 AM   #188
Racer x
ninjette.org certified postwhore
 
Racer x's Avatar
 
Name: Eric
Location: Iowa City
Join Date: May 2009

Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X

Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
I have raced with Ali and used RnR since 2008. Ya really great guys. And real world tuners. They ride fast bikes all the time. So they know what they are doing. At one point Ali had the fastest zx12 and the fastest 250 ninja.
__________________________________________________
Top speed 123.369mph. Ohio mile
Worlds fastest 250 ninja
Racer x is offline   Reply With Quote


Old June 12th, 2013, 05:55 AM   #189
Dark
Simple kind of man
 
Dark's Avatar
 
Name: Ryan
Location: Stuttgart, Germany
Join Date: Apr 2013

Motorcycle(s): 2013 Ninja 300

Posts: 133
Quote:
Originally Posted by Racer x View Post
I have raced with Ali and used RnR since 2008. Ya really great guys. And real world tuners. They ride fast bikes all the time. So they know what they are doing. At one point Ali had the fastest zx12 and the fastest 250 ninja.
I remember when he was rebuilding the 250 and the pistons had dimples in them from running nitrous...he didn't care and still used them, lower compression
__________________________________________________
Dark is offline   Reply With Quote


Old June 12th, 2013, 07:34 AM   #190
Racer x
ninjette.org certified postwhore
 
Racer x's Avatar
 
Name: Eric
Location: Iowa City
Join Date: May 2009

Motorcycle(s): 2008 Kawmeracchi 350 2010 Project X

Posts: A lot.
Blog Entries: 54
MOTM - Sep '18, Feb '16
The cast pistons limit him to 10 to 15 hp of nitrous. Nitrous loves compression.
__________________________________________________
Top speed 123.369mph. Ohio mile
Worlds fastest 250 ninja
Racer x is offline   Reply With Quote


Reply




Similar Threads
Thread Thread Starter Forum Replies Last Post
Ninja 250 racer build thread bitaria Ninjettes At Speed 81 December 8th, 2015 08:19 AM
300 Hero Build thread :) Hero Danny General Motorcycling Discussion 98 June 25th, 2015 06:47 AM
Christmas Build thread ds650rida 1986 - 2007 Ninja 250R Tech Talk 84 June 10th, 2014 02:46 PM
Epic build thread Alex Off-Topic 8 April 8th, 2013 04:57 PM
Not so new '83 Kawi 440 LTD Build thread 5evenz The Ex-Ninjetters Lair 9 January 28th, 2013 06:48 AM


Thread Tools

Posting Rules
You may not post new threads
You may not 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

Forum Jump


Motorcycle Safety Foundation

All times are GMT -7. The time now is 11:48 AM.


Website uptime monitoring Host-tracker.com
Powered by vBulletin®
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
Except where otherwise noted, all site contents are © Copyright 2022 ninjette.org, All rights reserved.