2000 Yamaha YZ250 frame with a 169FML motor project! - Page 4

mebigdave · 03-14-2008, 02:57 AM

Well, I cut the frame today the same way that our bikes don't have the frame below the motor and tried to mount the motor but found that this is not going to work :x

The carb is the issue. There is no space for the carb at all as this would mean cutting the frame at the top where the rear shock mounts and this would mean that there would be no strength in the frame and defeat the whole idea! 8O

So as it stands now, I've welded the frame back together and will try putting my 94 YZ250 motor in this 2000 frame on Sunday. I did try this last Sunday but may have been a bit too hasty when I thought the expansion chamber would not fit correctly. :?

I'll part the 94 frame and sell that off to try make some money back. This also leaves me with a spare motor for the China bike. :wink:

Thanks for all the support and I'm sorry I could not do this project more justice!

culcune · 03-14-2008, 10:01 AM

You are no longer allowed on chinariders.net :x

TeamCheap · 03-14-2008, 05:23 PM

I hope I have better luck with my China/Blaster otherwise I'll only be able to lurk around on this site.

It's to bad it isnt going to work out for you.
I fear that the engine in the chinablaster is going to be to tall also but I'll just rework the mount higher for the tank for clearance if needed.Atleast a blaster engine is air cooled so it is a bit bigger than a water cooled 2-stroke.

mebigdave · 03-14-2008, 05:28 PM

Just watch you don't have the same oversight I did with how high the carb comes out of the barrel! Make sure that there is no structural frame in the way because moving the carb away from the engine will not allow enough fuel in when required and you would end up stalling all the time.

TeamCheap · 03-14-2008, 05:39 PM

Thats what a sawzall and welder are for.

Did you look around for a different intake manifold that has a better angle for your application.

I would have liked to have seen pics of the engine set up in that frame.

MATT · 03-14-2008, 06:20 PM

My replacement engine came with a straight intake manifold that would not fit in my lifan. The stock lifan manifold is curved which changes the carb placement drastically. Just reinforcing team cheaps advice

usmc-mustang · 03-15-2008, 12:48 AM

When I tried to install the 30mm carb, it would not fit the frame correctly. It hit the right frame rail. Some simple finesing, and removal of the acceleartor pump made it fit perfect. The intake and carb of the original engine stuck straight out. This maybe the intake and carby set up you need. There are two intakes, those on the lifans, and those on the other. The 30mm intake will take the 27mm carb, but not vice-versa. Get a standard honda-chengshin, ets intake, and it will likely fit without issues.

mebigdave · 03-15-2008, 02:17 AM

Quote:

Originally Posted by MATT

My replacement engine came with a straight intake manifold that would not fit in my lifan. The stock lifan manifold is curved which changes the carb placement drastically. Just reinforcing team cheaps advice

I bought a new intake manifold but that is not the issue! The issue is that the carb is to high and has no chance of fitting with the frame in the way.

TeamCheap · 03-15-2008, 02:25 AM

Well some things just aren't meant to be.

AZ200cc · 03-15-2008, 11:24 AM

It would have been neat to see, But there are tons of bikes at the boneyards...I bet that motor won't go to waste.

rvbilly · 08-02-2013, 05:25 PM

1x 13 tooth 520 front sprocket (JTF 328)

Note on that sprocket ,, I am building my Xr framed 163FML powered bike ,your JTF 328 sprocket is wrong ,I ordered the 328 and it didn`t fit the countershaft ,the correct one is a JTF 327 from a 2003-2006 Honda CRF 150F model bike ,it is a 520 series chain

03-14-2008, 10:01 AM	#47
culcune Join Date: May 2006 Location: Yuma, Arizona Posts: 9,054	You are no longer allowed on chinariders.net :x __________________ "They say that life's a carousel, spinning fast you got to ride it well..." TGB Delivery Scooter 150 TMEC 200 Enduro--carcass is sadly rotting in the backyard
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03-15-2008, 11:24 AM	#55
AZ200cc Join Date: Apr 2007 Location: Show Low Arizona Posts: 2,889	It would have been neat to see, But there are tons of bikes at the boneyards...I bet that motor won't go to waste. __________________ <br />2001 Suzuki DR200SE<br />1997 Suzuki RM250 YIKES<br />1995 Yamaha Breeze 125 daughters<br />1991 Honda XR80r Restored<br />maybe a 2003 Yamaha TTR90
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03-14-2008, 02:57 AM	#46
mebigdave Join Date: Dec 2007 Location: New Zealand Posts: 196	Well, I cut the frame today the same way that our bikes don't have the frame below the motor and tried to mount the motor but found that this is not going to work :x The carb is the issue. There is no space for the carb at all as this would mean cutting the frame at the top where the rear shock mounts and this would mean that there would be no strength in the frame and defeat the whole idea! 8O So as it stands now, I've welded the frame back together and will try putting my 94 YZ250 motor in this 2000 frame on Sunday. I did try this last Sunday but may have been a bit too hasty when I thought the expansion chamber would not fit correctly. :? I'll part the 94 frame and sell that off to try make some money back. This also leaves me with a spare motor for the China bike. :wink: Thanks for all the support and I'm sorry I could not do this project more justice!
	0

03-14-2008, 05:23 PM	#48
TeamCheap Join Date: Jun 2006 Location: directly under the earths sun............NOW Posts: 2,302	I hope I have better luck with my China/Blaster otherwise I'll only be able to lurk around on this site. It's to bad it isnt going to work out for you. I fear that the engine in the chinablaster is going to be to tall also but I'll just rework the mount higher for the tank for clearance if needed.Atleast a blaster engine is air cooled so it is a bit bigger than a water cooled 2-stroke.
	0

03-14-2008, 05:28 PM	#49
mebigdave Join Date: Dec 2007 Location: New Zealand Posts: 196	Just watch you don't have the same oversight I did with how high the carb comes out of the barrel! Make sure that there is no structural frame in the way because moving the carb away from the engine will not allow enough fuel in when required and you would end up stalling all the time.
	0

03-14-2008, 05:39 PM	#50
TeamCheap Join Date: Jun 2006 Location: directly under the earths sun............NOW Posts: 2,302	Thats what a sawzall and welder are for. Did you look around for a different intake manifold that has a better angle for your application. I would have liked to have seen pics of the engine set up in that frame.
	0

03-14-2008, 06:20 PM	#51
MATT Join Date: Nov 2007 Posts: 83	My replacement engine came with a straight intake manifold that would not fit in my lifan. The stock lifan manifold is curved which changes the carb placement drastically. Just reinforcing team cheaps advice
	0

03-15-2008, 12:48 AM	#52
usmc-mustang Join Date: Jan 2008 Location: Seligman, AZ Posts: 107	When I tried to install the 30mm carb, it would not fit the frame correctly. It hit the right frame rail. Some simple finesing, and removal of the acceleartor pump made it fit perfect. The intake and carb of the original engine stuck straight out. This maybe the intake and carby set up you need. There are two intakes, those on the lifans, and those on the other. The 30mm intake will take the 27mm carb, but not vice-versa. Get a standard honda-chengshin, ets intake, and it will likely fit without issues.
	0

03-15-2008, 02:25 AM	#54
TeamCheap Join Date: Jun 2006 Location: directly under the earths sun............NOW Posts: 2,302	Well some things just aren't meant to be.
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08-02-2013, 05:25 PM	#56
rvbilly Join Date: Jul 2013 Location: Chilliwack BC Canada Posts: 34	1x 13 tooth 520 front sprocket (JTF 328) Note on that sprocket ,, I am building my Xr framed 163FML powered bike ,your JTF 328 sprocket is wrong ,I ordered the 328 and it didn`t fit the countershaft ,the correct one is a JTF 327 from a 2003-2006 Honda CRF 150F model bike ,it is a 520 series chain
	0