CRF 150F baffle question

gilroy222 · 06-26-2008, 09:06 AM

My brother has a stock 06' CRF 150F and he recently took his baffle back out to give him some more noise and torque. But one of my friends said that it is really bad for the bike and it could blow up because of something about the compression or back pressure or something, is this true?

tigmaster · 06-26-2008, 09:35 AM

Not on a four stroke. It will be fine. Obviously the engine is running a bit leaner but to what extent I don't know. Pull the sparkplug. If it is light tan or darker you are safe. If it is white at all then let us know.

gilroy222 · 06-26-2008, 10:06 AM

Quote:

Originally Posted by tigmaster

Not on a four stroke. It will be fine. Obviously the engine is running a bit leaner but to what extent I don't know. Pull the sparkplug. If it is light tan or darker you are safe. If it is white at all then let us know.

I just checked it and the tip of the plug is in fact white,so what does this mean now?

hennett · 06-26-2008, 10:53 AM

Can someone please tell me if there are differences between a Honda CRF250R and a CRF250F?

Or are they two names for the same bike?

gilroy222 · 06-26-2008, 11:12 AM

Quote:

Originally Posted by hennett

Can someone please tell me if there are differences between a Honda CRF250R and a CRF250F?

Or are they two names for the same bike?

nah the R means its like a race bike and the F means its more of a regular off road bike but I could be wrong, I just know that the R's usually have more racing parts on them.

tigmaster · 06-26-2008, 11:16 AM

Well, I don't think they make a CRF250F. They make an XR250. The bike that Honda makes is the CRF250R but many people don't know that and just call it the "F".

As far as jetting goes:
http://www.mototips.com/how-s-perfor...your-ride.html

Wopstar · 06-26-2008, 11:27 AM

Quote:

Originally Posted by gilroy222

I just checked it and the tip of the plug is in fact white,so what does this mean now?

You are running way too lean. You need to richen it up a bit. If you keep running it lean then you can kill the engine!

atvrider93 · 06-26-2008, 11:42 AM

gilroy, you need to richen up the bike a bit
bigger main jet

hennett, the r is a race bike, f is a trail bike

i guess i was a bit slow in my response

Wopstar · 06-26-2008, 11:43 AM

Or you could start by moving the needle a couple of grooves. Probably will need a bigger idle jet too.

tjscott2012 · 06-26-2008, 11:46 AM

or just put the baffle back in because they sound horrible without them (sorry)

06-26-2008, 09:06 AM	#1 (permalink)
gilroy222 C Rider Join Date: Apr 2008 Posts: 38	CRF 150F baffle question My brother has a stock 06' CRF 150F and he recently took his baffle back out to give him some more noise and torque. But one of my friends said that it is really bad for the bike and it could blow up because of something about the compression or back pressure or something, is this true?

06-26-2008, 09:35 AM	#2 (permalink)
tigmaster Administrator Join Date: Aug 2006 Location: Missouri, United States Posts: 7,072	Not on a four stroke. It will be fine. Obviously the engine is running a bit leaner but to what extent I don't know. Pull the sparkplug. If it is light tan or darker you are safe. If it is white at all then let us know. __________________ --'03 CRF450r-- --FMF Pipe, Pro-Tech Revavle-- --Vortex Basket With Tusk Disks And HP Springs-- --Pro Taper Triple Clamps And Bars-- --Devol Full SP With Moose HGs-- --Renthal 13/50 With R1 Chain-- --Now It Is The End, Probably...-- --'06 CBR F4I-- --Bone Stock-- Check Our Latest How-To Here

06-26-2008, 11:16 AM	#6 (permalink)
tigmaster Administrator Join Date: Aug 2006 Location: Missouri, United States Posts: 7,072	Well, I don't think they make a CRF250F. They make an XR250. The bike that Honda makes is the CRF250R but many people don't know that and just call it the "F". As far as jetting goes: http://www.mototips.com/how-s-perfor...your-ride.html __________________ --'03 CRF450r-- --FMF Pipe, Pro-Tech Revavle-- --Vortex Basket With Tusk Disks And HP Springs-- --Pro Taper Triple Clamps And Bars-- --Devol Full SP With Moose HGs-- --Renthal 13/50 With R1 Chain-- --Now It Is The End, Probably...-- --'06 CBR F4I-- --Bone Stock-- Check Our Latest How-To Here

06-26-2008, 11:43 AM	#9 (permalink)
Wopstar A Rider Join Date: Sep 2006 Location: Lake Havasu Arizona Posts: 685	Or you could start by moving the needle a couple of grooves. Probably will need a bigger idle jet too. __________________ Stickers Add Horsepower!!

06-26-2008, 11:46 AM	#10 (permalink)
tjscott2012 The Spam man Join Date: Nov 2007 Location: Hurley, Mo Posts: 3,858	or just put the baffle back in because they sound horrible without them (sorry) __________________ This is my signature. Its awesome

06-26-2008, 10:53 AM	#4 (permalink)
hennett C Rider Join Date: Jun 2008 Posts: 3	Can someone please tell me if there are differences between a Honda CRF250R and a CRF250F? Or are they two names for the same bike?

06-26-2008, 11:42 AM	#8 (permalink)
atvrider93 A Rider Join Date: May 2008 Location: Apex, NC Posts: 574	gilroy, you need to richen up the bike a bit bigger main jet hennett, the r is a race bike, f is a trail bike i guess i was a bit slow in my response

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