Register Community Calendar Today's Posts Search

Go Back   GZ 250 Forums > GZ250-Specific > General GZ250 Talk

Reply
 
Thread Tools Display Modes
Old 06-28-2007, 01:18 PM   #1
Quimrider
Senior Member
 
Join Date: Jun 2007
Location: Toledo, OH
Posts: 198
Send a message via AIM to Quimrider
What is the redline for the GZ250 engine?

Does anyone know what the redline RPM is for the GZ250? I plan on buying a tach. and want to get one with an appropriate rev range. Also if anyone has suggestions on where to get an inexpensive tach, I'd appreciate that too.



Login or Register to Remove Ads
Quimrider is offline  
Reply With Quote
Old 06-28-2007, 01:58 PM   #2
jonathan180iq
Super Moderator
 
jonathan180iq's Avatar
 
Join Date: Jan 2007
Location: Dalton, GA
Posts: 3,996
good luck with your search. As far as I know, no one here as been able to come across an affordable one.

As for redline, who knows.... When the engine starts doing this :cuss: :drool:, it's probably time to back off.

take care,
Jonathan
jonathan180iq is offline  
Reply With Quote
Old 06-28-2007, 03:11 PM   #3
markboy
Member
 
Join Date: Jun 2007
Location: Redmond, WA
Posts: 31
While I was looking for a tach one service guy said "Why don't you just wait for the rev limiter to kick in and then shift". This was on the phone and I couldn't tell if he was joking or serious but it got me to thinking - does the GZ even have a rev limiter? (I've never actually heard of such a thing)
__________________
_______________________
Still learning... and loving it!
Redmond, WA



Login or Register to Remove Ads
markboy is offline  
Reply With Quote
Old 06-28-2007, 03:56 PM   #4
jonathan180iq
Super Moderator
 
jonathan180iq's Avatar
 
Join Date: Jan 2007
Location: Dalton, GA
Posts: 3,996
So a service guy told you to drive it until it won't rev any higher and then shift...

That's pretty a pretty smart service guy.

You know, I'm going out to my car right now to practice this very behavior on the way home from work.

Don't worry, I'm sure I'll make it.
jonathan180iq is offline  
Reply With Quote
Old 06-28-2007, 05:20 PM   #5
trykemike
Senior Member
 
Join Date: May 2007
Location: toronto ont canada
Posts: 177
The engine in a GZ250 is the same block as the GN250 but with different tuning characteristics. The GN250
produced max hp @ 8500 rpm the GZ250 produces max hp @ 8000 rpm so the engine should rev safely to 8500 rpm. It may not be smooth @ that rpm due to spark advance mixture etc.
__________________
sds4



Login or Register to Remove Ads
trykemike is offline  
Reply With Quote
Old 06-28-2007, 06:03 PM   #6
Badbob
Senior Member
 
Badbob's Avatar
 
Join Date: Aug 2006
Location: Tallahassee FL
Posts: 945
GZ250s do not have a rev limiter.

Put it in neutral and go to WOT and you will see this for yourself. However you might be picking up your engine with a broom and a dust pan.

The service manual does not mention rev limiters and there is no sign of one in the electrical schematics.
Badbob is offline  
Reply With Quote
Old 07-31-2007, 02:27 PM   #7
Quimrider
Senior Member
 
Join Date: Jun 2007
Location: Toledo, OH
Posts: 198
Send a message via AIM to Quimrider
I got my tach and will be posting a "how to" soon. The tach only goes to 8k RPM. It shows idle at about 1000 rpm and ~7600 rpm at 75mph. I've revved it in neutral until it sounded like it was reaching the end of it's rev range. Based on the where the numbers stop and their spacing I'd say it went up to 10-12K rpm. Not something I intend to do again as I do not like my engine in little broken pieces.
Quimrider is offline  
Reply With Quote
Old 08-02-2007, 08:10 AM   #8
davidc83
Senior Member
 
Join Date: Jan 2007
Posts: 184
Quimrider:
Where did you get your tach? how much? Pictures?
davidc83 is offline  
Reply With Quote
Old 08-02-2007, 10:55 AM   #9
Quimrider
Senior Member
 
Join Date: Jun 2007
Location: Toledo, OH
Posts: 198
Send a message via AIM to Quimrider
see my post in this thread from july 15 http://www.gz250bike.com/viewtopic.php?t=420 it was about 57 dollars delivered. Sometime soon I'll write up a "how to" with pics. It was easier to than I thought it would be. Took me about 1.5 hrs. most of that was figuring out where to mount, connect and route wires. I'd say it could be done in a half hour or less. When I find time I'll write up a "how to", prolly this weekend, I took plenty of pictures.
Quimrider is offline  
Reply With Quote
Old 08-03-2007, 01:19 PM   #10
Jaime
Senior Member
 
Join Date: Jul 2007
Location: Spain
Posts: 102
The GZ250 revs up to around 9000 rpm until the rev limiter stops the ignition. At least my 2006 unit has limiter, as all electronic ignition vehicles (injected and carburated).
It's not good to run for a while at highest rpm, but there's no problem if you shift up when the rev limiter acts; it's there just to protect the motor of overreving.
__________________
Trying my best in English
Jaime is offline  
Reply With Quote
Reply




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


All times are GMT -4. The time now is 08:26 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.